From f2ab3d5d2f71a857b4f866b7ea4cfbcc393810fd Mon Sep 17 00:00:00 2001
From: Michel Boudreau <michelboudreau@gmail.com>
Date: Mon, 21 Nov 2022 23:07:10 -0400
Subject: [PATCH] updating readme and transition rest api version (#38)

---
 README.md          | 9 +++++----
 common/net/Jira.js | 2 +-
 dist/index.js      | 2 +-
 dist/index.js.map  | 2 +-
 4 files changed, 8 insertions(+), 7 deletions(-)

diff --git a/README.md b/README.md
index 4a30cd3..d05391e 100644
--- a/README.md
+++ b/README.md
@@ -1,4 +1,5 @@
 # Jira Transition
+
 Transition Jira issue
 
 > ##### Only supports Jira Cloud. Does not support Jira Server (hosted)
@@ -14,7 +15,7 @@ Example transition action:
 ```yaml
 - name: Transition issue
   id: transition
-  uses: atlassian/gajira-transition@master
+  uses: atlassian/gajira-transition@v3
   with:
     issue: GA-181
     transition: "In progress"
@@ -35,7 +36,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
     - name: Login
-      uses: atlassian/gajira-login@master
+      uses: atlassian/gajira-login@v3
       env:
         JIRA_BASE_URL: ${{ secrets.JIRA_BASE_URL }}
         JIRA_USER_EMAIL: ${{ secrets.JIRA_USER_EMAIL }}
@@ -43,10 +44,10 @@ jobs:
         
     - name: Create new issue
       id: create
-      uses: atlassian/gajira-create@master
+      uses: atlassian/gajira-create@v3
 
     - name: Transition issue
-      uses: atlassian/gajira-transition@master
+      uses: atlassian/gajira-transition@v3
       with:
         issue: ${{ steps.create.outputs.issue }}
         transition: "In progress"
diff --git a/common/net/Jira.js b/common/net/Jira.js
index faa195b..4c983ea 100644
--- a/common/net/Jira.js
+++ b/common/net/Jira.js
@@ -41,7 +41,7 @@ class Jira {
 
   async transitionIssue (issueId, data) {
     return this.fetch('transitionIssue', {
-      pathname: `/rest/api/3/issue/${issueId}/transitions`,
+      pathname: `/rest/api/2/issue/${issueId}/transitions`,
     }, {
       method: 'POST',
       body: data,
diff --git a/dist/index.js b/dist/index.js
index decee0d..fb6dfb9 100644
--- a/dist/index.js
+++ b/dist/index.js
@@ -108,7 +108,7 @@ class Jira {
 
   async transitionIssue (issueId, data) {
     return this.fetch('transitionIssue', {
-      pathname: `/rest/api/3/issue/${issueId}/transitions`,
+      pathname: `/rest/api/2/issue/${issueId}/transitions`,
     }, {
       method: 'POST',
       body: data,
diff --git a/dist/index.js.map b/dist/index.js.map
index 7359531..8683a42 100644
--- a/dist/index.js.map
+++ b/dist/index.js.map
@@ -1 +1 @@
-{"version":3,"file":"index.js","mappings":";;;;;;AAAA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;;;;;;;;ACrDA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;;;;;;;;AC3GA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;;;;;;;;;ACl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z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zDA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;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console.log('Possible transitions:')\n      transitions.forEach((t) => {\n        console.log(`{ id: ${t.id}, name: ${t.name} } transitions issue to '${t.to.name}' status.`)\n      })\n\n      return\n    }\n\n    console.log(`Selected transition:${JSON.stringify(transitionToApply, null, 4)}`)\n\n    await this.Jira.transitionIssue(issueId, {\n      transition: {\n        id: transitionToApply.id,\n      },\n    })\n\n    const transitionedIssue = await this.Jira.getIssue(issueId)\n\n    // console.log(`transitionedIssue:${JSON.stringify(transitionedIssue, null, 4)}`)\n    console.log(`Changed ${issueId} status to : ${_.get(transitionedIssue, 'fields.status.name')} .`)\n    console.log(`Link to issue: ${this.config.baseUrl}/browse/${issueId}`)\n\n    return {}\n  }\n}\n","const { get } = require('lodash')\n\nconst serviceName = 'jira'\nconst { format } = require('url')\nconst client = require('./client')(serviceName)\n\nclass Jira {\n  constructor ({ baseUrl, token, email }) {\n    this.baseUrl = baseUrl\n    this.token = token\n    this.email = email\n  }\n\n  async getIssue (issueId, query = {}) {\n    const { fields = [], expand = [] } = query\n\n    try {\n      return this.fetch('getIssue', {\n        pathname: `/rest/api/2/issue/${issueId}`,\n        query: {\n          fields: fields.join(','),\n          expand: expand.join(','),\n        },\n      })\n    } catch (error) {\n      if (get(error, 'res.status') === 404) {\n        return\n      }\n\n      throw error\n    }\n  }\n\n  async getIssueTransitions (issueId) {\n    return this.fetch('getIssueTransitions', {\n      pathname: `/rest/api/2/issue/${issueId}/transitions`,\n    }, {\n      method: 'GET',\n    })\n  }\n\n  async transitionIssue (issueId, data) {\n    return this.fetch('transitionIssue', {\n      pathname: `/rest/api/3/issue/${issueId}/transitions`,\n    }, {\n      method: 'POST',\n      body: data,\n    })\n  }\n\n  async fetch (apiMethodName,\n    { host, pathname, query },\n    { method, body, headers = {} } = {}) {\n    const url = format({\n      host: host || this.baseUrl,\n      pathname,\n      query,\n    })\n\n    if (!method) {\n      method = 'GET'\n    }\n\n    if (headers['Content-Type'] === undefined) {\n      headers['Content-Type'] = 'application/json'\n    }\n\n    if (headers.Authorization === undefined) {\n      headers.Authorization = `Basic ${Buffer.from(`${this.email}:${this.token}`).toString('base64')}`\n    }\n\n    // strong check for undefined\n    // cause body variable can be 'false' boolean value\n    if (body && headers['Content-Type'] === 'application/json') {\n      body = JSON.stringify(body)\n    }\n\n    const state = {\n      req: {\n        method,\n        headers,\n        body,\n        url,\n      },\n    }\n\n    try {\n      await client(state, `${serviceName}:${apiMethodName}`)\n    } catch (error) {\n      const fields = {\n        originError: error,\n        source: 'jira',\n      }\n\n      delete state.req.headers\n\n      throw Object.assign(\n        new Error('Jira API error'),\n        state,\n        fields\n      )\n    }\n\n    return state.res.body\n  }\n}\n\nmodule.exports = Jira\n","const fetch = require('node-fetch')\n// const moment = require('moment')\n\nmodule.exports = serviceName => async (state, apiMethod = 'unknown') => {\n  // const startTime = moment.now()\n\n  const response = await fetch(state.req.url, state.req)\n\n  state.res = {\n    headers: response.headers.raw(),\n    status: response.status,\n  }\n\n  // const totalTime = moment.now() - startTime\n  // const tags = {\n  //   api_method: apiMethod,\n  //   method: state.req.method || 'GET',\n  //   response_code: response.status,\n  //   service: serviceName,\n  // }\n\n  state.res.body = await response.text()\n\n  const isJSON = (response.headers.get('content-type') || '').includes('application/json')\n\n  if (isJSON && state.res.body) {\n    state.res.body = JSON.parse(state.res.body)\n  }\n\n  if (!response.ok) {\n    throw new Error(response.statusText)\n  }\n\n  return state\n}\n","\"use strict\";\nvar __createBinding = (this && this.__createBinding) || (Object.create ? (function(o, m, k, k2) {\n    if (k2 === undefined) k2 = k;\n    Object.defineProperty(o, k2, { enumerable: true, get: function() { return m[k]; } });\n}) : (function(o, m, k, k2) {\n    if (k2 === undefined) k2 = k;\n    o[k2] = m[k];\n}));\nvar __setModuleDefault = (this && this.__setModuleDefault) || (Object.create ? (function(o, v) {\n    Object.defineProperty(o, \"default\", { enumerable: true, value: v });\n}) : function(o, v) {\n    o[\"default\"] = v;\n});\nvar __importStar = (this && this.__importStar) || function (mod) {\n    if (mod && mod.__esModule) return mod;\n    var result = {};\n    if (mod != null) for (var k in mod) if (k !== \"default\" && Object.hasOwnProperty.call(mod, k)) __createBinding(result, mod, k);\n    __setModuleDefault(result, mod);\n    return result;\n};\nObject.defineProperty(exports, \"__esModule\", { value: true });\nexports.issue = exports.issueCommand = void 0;\nconst os = __importStar(require(\"os\"));\nconst utils_1 = require(\"./utils\");\n/**\n * Commands\n *\n * Command Format:\n *   ::name key=value,key=value::message\n *\n * Examples:\n *   ::warning::This is the message\n *   ::set-env name=MY_VAR::some value\n */\nfunction issueCommand(command, properties, message) {\n    const cmd = new Command(command, properties, message);\n    process.stdout.write(cmd.toString() + os.EOL);\n}\nexports.issueCommand = issueCommand;\nfunction issue(name, message = '') {\n    issueCommand(name, {}, message);\n}\nexports.issue = issue;\nconst CMD_STRING = '::';\nclass Command {\n    constructor(command, properties, message) {\n        if (!command) {\n            command = 'missing.command';\n        }\n        this.command = command;\n        this.properties = properties;\n        this.message = message;\n    }\n    toString() {\n        let cmdStr = CMD_STRING + this.command;\n        if (this.properties && Object.keys(this.properties).length > 0) {\n            cmdStr += ' ';\n            let first = true;\n            for (const key in this.properties) {\n                if (this.properties.hasOwnProperty(key)) {\n                    const val = this.properties[key];\n                    if (val) {\n                        if (first) {\n                            first = false;\n                        }\n                        else {\n                            cmdStr += ',';\n                        }\n                        cmdStr += `${key}=${escapeProperty(val)}`;\n                    }\n                }\n            }\n        }\n        cmdStr += `${CMD_STRING}${escapeData(this.message)}`;\n        return cmdStr;\n    }\n}\nfunction escapeData(s) {\n    return utils_1.toCommandValue(s)\n        .replace(/%/g, '%25')\n        .replace(/\\r/g, '%0D')\n        .replace(/\\n/g, '%0A');\n}\nfunction escapeProperty(s) {\n    return utils_1.toCommandValue(s)\n        .replace(/%/g, '%25')\n        .replace(/\\r/g, '%0D')\n        .replace(/\\n/g, '%0A')\n        .replace(/:/g, '%3A')\n        .replace(/,/g, '%2C');\n}\n//# sourceMappingURL=command.js.map","\"use strict\";\nvar __createBinding = (this && this.__createBinding) || (Object.create ? (function(o, m, k, k2) {\n    if (k2 === undefined) k2 = k;\n    Object.defineProperty(o, k2, { enumerable: true, get: function() { return m[k]; } });\n}) : (function(o, m, k, k2) {\n    if (k2 === undefined) k2 = k;\n    o[k2] = m[k];\n}));\nvar __setModuleDefault = (this && this.__setModuleDefault) || (Object.create ? (function(o, v) {\n    Object.defineProperty(o, \"default\", { enumerable: true, value: v });\n}) : function(o, v) {\n    o[\"default\"] = v;\n});\nvar __importStar = (this && this.__importStar) || function (mod) {\n    if (mod && mod.__esModule) return mod;\n    var result = {};\n    if (mod != null) for (var k in mod) if (k !== \"default\" && Object.hasOwnProperty.call(mod, k)) __createBinding(result, mod, k);\n    __setModuleDefault(result, mod);\n    return result;\n};\nvar __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) {\n    function adopt(value) { return value instanceof P ? value : new P(function (resolve) { resolve(value); }); }\n    return new (P || (P = Promise))(function (resolve, reject) {\n        function fulfilled(value) { try { step(generator.next(value)); } catch (e) { reject(e); } }\n        function rejected(value) { try { step(generator[\"throw\"](value)); } catch (e) { reject(e); } }\n        function step(result) { result.done ? resolve(result.value) : adopt(result.value).then(fulfilled, rejected); }\n        step((generator = generator.apply(thisArg, _arguments || [])).next());\n    });\n};\nObject.defineProperty(exports, \"__esModule\", { value: true });\nexports.getIDToken = exports.getState = exports.saveState = exports.group = exports.endGroup = exports.startGroup = exports.info = exports.notice = exports.warning = exports.error = exports.debug = exports.isDebug = exports.setFailed = exports.setCommandEcho = exports.setOutput = exports.getBooleanInput = exports.getMultilineInput = exports.getInput = exports.addPath = exports.setSecret = exports.exportVariable = exports.ExitCode = void 0;\nconst command_1 = require(\"./command\");\nconst file_command_1 = require(\"./file-command\");\nconst utils_1 = require(\"./utils\");\nconst os = __importStar(require(\"os\"));\nconst path = __importStar(require(\"path\"));\nconst oidc_utils_1 = require(\"./oidc-utils\");\n/**\n * The code to exit an action\n */\nvar ExitCode;\n(function (ExitCode) {\n    /**\n     * A code indicating that the action was successful\n     */\n    ExitCode[ExitCode[\"Success\"] = 0] = \"Success\";\n    /**\n     * A code indicating that the action was a failure\n     */\n    ExitCode[ExitCode[\"Failure\"] = 1] = \"Failure\";\n})(ExitCode = exports.ExitCode || (exports.ExitCode = {}));\n//-----------------------------------------------------------------------\n// Variables\n//-----------------------------------------------------------------------\n/**\n * Sets env variable for this action and future actions in the job\n * @param name the name of the variable to set\n * @param val the value of the variable. Non-string values will be converted to a string via JSON.stringify\n */\n// eslint-disable-next-line @typescript-eslint/no-explicit-any\nfunction exportVariable(name, val) {\n    const convertedVal = utils_1.toCommandValue(val);\n    process.env[name] = convertedVal;\n    const filePath = process.env['GITHUB_ENV'] || '';\n    if (filePath) {\n        return file_command_1.issueFileCommand('ENV', file_command_1.prepareKeyValueMessage(name, val));\n    }\n    command_1.issueCommand('set-env', { name }, convertedVal);\n}\nexports.exportVariable = exportVariable;\n/**\n * Registers a secret which will get masked from logs\n * @param secret value of the secret\n */\nfunction setSecret(secret) {\n    command_1.issueCommand('add-mask', {}, secret);\n}\nexports.setSecret = setSecret;\n/**\n * Prepends inputPath to the PATH (for this action and future actions)\n * @param inputPath\n */\nfunction addPath(inputPath) {\n    const filePath = process.env['GITHUB_PATH'] || '';\n    if (filePath) {\n        file_command_1.issueFileCommand('PATH', inputPath);\n    }\n    else {\n        command_1.issueCommand('add-path', {}, inputPath);\n    }\n    process.env['PATH'] = `${inputPath}${path.delimiter}${process.env['PATH']}`;\n}\nexports.addPath = addPath;\n/**\n * Gets the value of an input.\n * Unless trimWhitespace is set to false in InputOptions, the value is also trimmed.\n * Returns an empty string if the value is not defined.\n *\n * @param     name     name of the input to get\n * @param     options  optional. See InputOptions.\n * @returns   string\n */\nfunction getInput(name, options) {\n    const val = process.env[`INPUT_${name.replace(/ /g, '_').toUpperCase()}`] || '';\n    if (options && options.required && !val) {\n        throw new Error(`Input required and not supplied: ${name}`);\n    }\n    if (options && options.trimWhitespace === false) {\n        return val;\n    }\n    return val.trim();\n}\nexports.getInput = getInput;\n/**\n * Gets the values of an multiline input.  Each value is also trimmed.\n *\n * @param     name     name of the input to get\n * @param     options  optional. See InputOptions.\n * @returns   string[]\n *\n */\nfunction getMultilineInput(name, options) {\n    const inputs = getInput(name, options)\n        .split('\\n')\n        .filter(x => x !== '');\n    if (options && options.trimWhitespace === false) {\n        return inputs;\n    }\n    return inputs.map(input => input.trim());\n}\nexports.getMultilineInput = getMultilineInput;\n/**\n * Gets the input value of the boolean type in the YAML 1.2 \"core schema\" specification.\n * Support boolean input list: `true | True | TRUE | false | False | FALSE` .\n * The return value is also in boolean type.\n * ref: https://yaml.org/spec/1.2/spec.html#id2804923\n *\n * @param     name     name of the input to get\n * @param     options  optional. See InputOptions.\n * @returns   boolean\n */\nfunction getBooleanInput(name, options) {\n    const trueValue = ['true', 'True', 'TRUE'];\n    const falseValue = ['false', 'False', 'FALSE'];\n    const val = getInput(name, options);\n    if (trueValue.includes(val))\n        return true;\n    if (falseValue.includes(val))\n        return false;\n    throw new TypeError(`Input does not meet YAML 1.2 \"Core Schema\" specification: ${name}\\n` +\n        `Support boolean input list: \\`true | True | TRUE | false | False | FALSE\\``);\n}\nexports.getBooleanInput = getBooleanInput;\n/**\n * Sets the value of an output.\n *\n * @param     name     name of the output to set\n * @param     value    value to store. Non-string values will be converted to a string via JSON.stringify\n */\n// eslint-disable-next-line @typescript-eslint/no-explicit-any\nfunction setOutput(name, value) {\n    const filePath = process.env['GITHUB_OUTPUT'] || '';\n    if (filePath) {\n        return file_command_1.issueFileCommand('OUTPUT', file_command_1.prepareKeyValueMessage(name, value));\n    }\n    process.stdout.write(os.EOL);\n    command_1.issueCommand('set-output', { name }, utils_1.toCommandValue(value));\n}\nexports.setOutput = setOutput;\n/**\n * Enables or disables the echoing of commands into stdout for the rest of the step.\n * Echoing is disabled by default if ACTIONS_STEP_DEBUG is not set.\n *\n */\nfunction setCommandEcho(enabled) {\n    command_1.issue('echo', enabled ? 'on' : 'off');\n}\nexports.setCommandEcho = setCommandEcho;\n//-----------------------------------------------------------------------\n// Results\n//-----------------------------------------------------------------------\n/**\n * Sets the action status to failed.\n * When the action exits it will be with an exit code of 1\n * @param message add error issue message\n */\nfunction setFailed(message) {\n    process.exitCode = ExitCode.Failure;\n    error(message);\n}\nexports.setFailed = setFailed;\n//-----------------------------------------------------------------------\n// Logging Commands\n//-----------------------------------------------------------------------\n/**\n * Gets whether Actions Step Debug is on or not\n */\nfunction isDebug() {\n    return process.env['RUNNER_DEBUG'] === '1';\n}\nexports.isDebug = isDebug;\n/**\n * Writes debug message to user log\n * @param message debug message\n */\nfunction debug(message) {\n    command_1.issueCommand('debug', {}, message);\n}\nexports.debug = debug;\n/**\n * Adds an error issue\n * @param message error issue message. Errors will be converted to string via toString()\n * @param properties optional properties to add to the annotation.\n */\nfunction error(message, properties = {}) {\n    command_1.issueCommand('error', utils_1.toCommandProperties(properties), message instanceof Error ? message.toString() : message);\n}\nexports.error = error;\n/**\n * Adds a warning issue\n * @param message warning issue message. Errors will be converted to string via toString()\n * @param properties optional properties to add to the annotation.\n */\nfunction warning(message, properties = {}) {\n    command_1.issueCommand('warning', utils_1.toCommandProperties(properties), message instanceof Error ? message.toString() : message);\n}\nexports.warning = warning;\n/**\n * Adds a notice issue\n * @param message notice issue message. Errors will be converted to string via toString()\n * @param properties optional properties to add to the annotation.\n */\nfunction notice(message, properties = {}) {\n    command_1.issueCommand('notice', utils_1.toCommandProperties(properties), message instanceof Error ? message.toString() : message);\n}\nexports.notice = notice;\n/**\n * Writes info to log with console.log.\n * @param message info message\n */\nfunction info(message) {\n    process.stdout.write(message + os.EOL);\n}\nexports.info = info;\n/**\n * Begin an output group.\n *\n * Output until the next `groupEnd` will be foldable in this group\n *\n * @param name The name of the output group\n */\nfunction startGroup(name) {\n    command_1.issue('group', name);\n}\nexports.startGroup = startGroup;\n/**\n * End an output group.\n */\nfunction endGroup() {\n    command_1.issue('endgroup');\n}\nexports.endGroup = endGroup;\n/**\n * Wrap an asynchronous function call in a group.\n *\n * Returns the same type as the function itself.\n *\n * @param name The name of the group\n * @param fn The function to wrap in the group\n */\nfunction group(name, fn) {\n    return __awaiter(this, void 0, void 0, function* () {\n        startGroup(name);\n        let result;\n        try {\n            result = yield fn();\n        }\n        finally {\n            endGroup();\n        }\n        return result;\n    });\n}\nexports.group = group;\n//-----------------------------------------------------------------------\n// Wrapper action state\n//-----------------------------------------------------------------------\n/**\n * Saves state for current action, the state can only be retrieved by this action's post job execution.\n *\n * @param     name     name of the state to store\n * @param     value    value to store. Non-string values will be converted to a string via JSON.stringify\n */\n// eslint-disable-next-line @typescript-eslint/no-explicit-any\nfunction saveState(name, value) {\n    const filePath = process.env['GITHUB_STATE'] || '';\n    if (filePath) {\n        return file_command_1.issueFileCommand('STATE', file_command_1.prepareKeyValueMessage(name, value));\n    }\n    command_1.issueCommand('save-state', { name }, utils_1.toCommandValue(value));\n}\nexports.saveState = saveState;\n/**\n * Gets the value of an state set by this action's main execution.\n *\n * @param     name     name of the state to get\n * @returns   string\n */\nfunction getState(name) {\n    return process.env[`STATE_${name}`] || '';\n}\nexports.getState = getState;\nfunction getIDToken(aud) {\n    return __awaiter(this, void 0, void 0, function* () {\n        return yield oidc_utils_1.OidcClient.getIDToken(aud);\n    });\n}\nexports.getIDToken = getIDToken;\n/**\n * Summary exports\n */\nvar summary_1 = require(\"./summary\");\nObject.defineProperty(exports, \"summary\", { enumerable: true, get: function () { return summary_1.summary; } });\n/**\n * @deprecated use core.summary\n */\nvar summary_2 = require(\"./summary\");\nObject.defineProperty(exports, \"markdownSummary\", { enumerable: true, get: function () { return summary_2.markdownSummary; } });\n/**\n * Path exports\n */\nvar path_utils_1 = require(\"./path-utils\");\nObject.defineProperty(exports, \"toPosixPath\", { enumerable: true, get: function () { return path_utils_1.toPosixPath; } });\nObject.defineProperty(exports, \"toWin32Path\", { enumerable: true, get: function () { return path_utils_1.toWin32Path; } });\nObject.defineProperty(exports, \"toPlatformPath\", { enumerable: true, get: function () { return path_utils_1.toPlatformPath; } });\n//# sourceMappingURL=core.js.map","\"use strict\";\n// For internal use, subject to change.\nvar __createBinding = (this && this.__createBinding) || (Object.create ? (function(o, m, k, k2) {\n    if (k2 === undefined) k2 = k;\n    Object.defineProperty(o, k2, { enumerable: true, get: function() { return m[k]; } });\n}) : (function(o, m, k, k2) {\n    if (k2 === undefined) k2 = k;\n    o[k2] = m[k];\n}));\nvar __setModuleDefault = (this && this.__setModuleDefault) || (Object.create ? (function(o, v) {\n    Object.defineProperty(o, \"default\", { enumerable: true, value: v });\n}) : function(o, v) {\n    o[\"default\"] = v;\n});\nvar __importStar = (this && this.__importStar) || function (mod) {\n    if (mod && mod.__esModule) return mod;\n    var result = {};\n    if (mod != null) for (var k in mod) if (k !== \"default\" && Object.hasOwnProperty.call(mod, k)) __createBinding(result, mod, k);\n    __setModuleDefault(result, mod);\n    return result;\n};\nObject.defineProperty(exports, \"__esModule\", { value: true });\nexports.prepareKeyValueMessage = exports.issueFileCommand = void 0;\n// We use any as a valid input type\n/* eslint-disable @typescript-eslint/no-explicit-any */\nconst fs = __importStar(require(\"fs\"));\nconst os = __importStar(require(\"os\"));\nconst uuid_1 = require(\"uuid\");\nconst utils_1 = require(\"./utils\");\nfunction issueFileCommand(command, message) {\n    const filePath = process.env[`GITHUB_${command}`];\n    if (!filePath) {\n        throw new Error(`Unable to find environment variable for file command ${command}`);\n    }\n    if (!fs.existsSync(filePath)) {\n        throw new Error(`Missing file at path: ${filePath}`);\n    }\n    fs.appendFileSync(filePath, `${utils_1.toCommandValue(message)}${os.EOL}`, {\n        encoding: 'utf8'\n    });\n}\nexports.issueFileCommand = issueFileCommand;\nfunction prepareKeyValueMessage(key, value) {\n    const delimiter = `ghadelimiter_${uuid_1.v4()}`;\n    const convertedValue = utils_1.toCommandValue(value);\n    // These should realistically never happen, but just in case someone finds a\n    // way to exploit uuid generation let's not allow keys or values that contain\n    // the delimiter.\n    if (key.includes(delimiter)) {\n        throw new Error(`Unexpected input: name should not contain the delimiter \"${delimiter}\"`);\n    }\n    if (convertedValue.includes(delimiter)) {\n        throw new Error(`Unexpected input: value should not contain the delimiter \"${delimiter}\"`);\n    }\n    return `${key}<<${delimiter}${os.EOL}${convertedValue}${os.EOL}${delimiter}`;\n}\nexports.prepareKeyValueMessage = prepareKeyValueMessage;\n//# sourceMappingURL=file-command.js.map","\"use strict\";\nvar __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) {\n    function adopt(value) { return value instanceof P ? value : new P(function (resolve) { resolve(value); }); }\n    return new (P || (P = Promise))(function (resolve, reject) {\n        function fulfilled(value) { try { step(generator.next(value)); } catch (e) { reject(e); } }\n        function rejected(value) { try { step(generator[\"throw\"](value)); } catch (e) { reject(e); } }\n        function step(result) { result.done ? resolve(result.value) : adopt(result.value).then(fulfilled, rejected); }\n        step((generator = generator.apply(thisArg, _arguments || [])).next());\n    });\n};\nObject.defineProperty(exports, \"__esModule\", { value: true });\nexports.OidcClient = void 0;\nconst http_client_1 = require(\"@actions/http-client\");\nconst auth_1 = require(\"@actions/http-client/lib/auth\");\nconst core_1 = require(\"./core\");\nclass OidcClient {\n    static createHttpClient(allowRetry = true, maxRetry = 10) {\n        const requestOptions = {\n            allowRetries: allowRetry,\n            maxRetries: maxRetry\n        };\n        return new http_client_1.HttpClient('actions/oidc-client', [new auth_1.BearerCredentialHandler(OidcClient.getRequestToken())], requestOptions);\n    }\n    static getRequestToken() {\n        const token = process.env['ACTIONS_ID_TOKEN_REQUEST_TOKEN'];\n        if (!token) {\n            throw new Error('Unable to get ACTIONS_ID_TOKEN_REQUEST_TOKEN env variable');\n        }\n        return token;\n    }\n    static getIDTokenUrl() {\n        const runtimeUrl = process.env['ACTIONS_ID_TOKEN_REQUEST_URL'];\n        if (!runtimeUrl) {\n            throw new Error('Unable to get ACTIONS_ID_TOKEN_REQUEST_URL env variable');\n        }\n        return runtimeUrl;\n    }\n    static getCall(id_token_url) {\n        var _a;\n        return __awaiter(this, void 0, void 0, function* () {\n            const httpclient = OidcClient.createHttpClient();\n            const res = yield httpclient\n                .getJson(id_token_url)\n                .catch(error => {\n                throw new Error(`Failed to get ID Token. \\n \n        Error Code : ${error.statusCode}\\n \n        Error Message: ${error.result.message}`);\n            });\n            const id_token = (_a = res.result) === null || _a === void 0 ? void 0 : _a.value;\n            if (!id_token) {\n                throw new Error('Response json body do not have ID Token field');\n            }\n            return id_token;\n        });\n    }\n    static getIDToken(audience) {\n        return __awaiter(this, void 0, void 0, function* () {\n            try {\n                // New ID Token is requested from action service\n                let id_token_url = OidcClient.getIDTokenUrl();\n                if (audience) {\n                    const encodedAudience = encodeURIComponent(audience);\n                    id_token_url = `${id_token_url}&audience=${encodedAudience}`;\n                }\n                core_1.debug(`ID token url is ${id_token_url}`);\n                const id_token = yield OidcClient.getCall(id_token_url);\n                core_1.setSecret(id_token);\n                return id_token;\n            }\n            catch (error) {\n                throw new Error(`Error message: ${error.message}`);\n            }\n        });\n    }\n}\nexports.OidcClient = OidcClient;\n//# sourceMappingURL=oidc-utils.js.map","\"use strict\";\nvar __createBinding = (this && this.__createBinding) || (Object.create ? (function(o, m, k, k2) {\n    if (k2 === undefined) k2 = k;\n    Object.defineProperty(o, k2, { enumerable: true, get: function() { return m[k]; } });\n}) : (function(o, m, k, k2) {\n    if (k2 === undefined) k2 = k;\n    o[k2] = m[k];\n}));\nvar __setModuleDefault = (this && this.__setModuleDefault) || (Object.create ? (function(o, v) {\n    Object.defineProperty(o, \"default\", { enumerable: true, value: v });\n}) : function(o, v) {\n    o[\"default\"] = v;\n});\nvar __importStar = (this && this.__importStar) || function (mod) {\n    if (mod && mod.__esModule) return mod;\n    var result = {};\n    if (mod != null) for (var k in mod) if (k !== \"default\" && Object.hasOwnProperty.call(mod, k)) __createBinding(result, mod, k);\n    __setModuleDefault(result, mod);\n    return result;\n};\nObject.defineProperty(exports, \"__esModule\", { value: true });\nexports.toPlatformPath = exports.toWin32Path = exports.toPosixPath = void 0;\nconst path = __importStar(require(\"path\"));\n/**\n * toPosixPath converts the given path to the posix form. On Windows, \\\\ will be\n * replaced with /.\n *\n * @param pth. Path to transform.\n * @return string Posix path.\n */\nfunction toPosixPath(pth) {\n    return pth.replace(/[\\\\]/g, '/');\n}\nexports.toPosixPath = toPosixPath;\n/**\n * toWin32Path converts the given path to the win32 form. On Linux, / will be\n * replaced with \\\\.\n *\n * @param pth. Path to transform.\n * @return string Win32 path.\n */\nfunction toWin32Path(pth) {\n    return pth.replace(/[/]/g, '\\\\');\n}\nexports.toWin32Path = toWin32Path;\n/**\n * toPlatformPath converts the given path to a platform-specific path. It does\n * this by replacing instances of / and \\ with the platform-specific path\n * separator.\n *\n * @param pth The path to platformize.\n * @return string The platform-specific path.\n */\nfunction toPlatformPath(pth) {\n    return pth.replace(/[/\\\\]/g, path.sep);\n}\nexports.toPlatformPath = toPlatformPath;\n//# sourceMappingURL=path-utils.js.map","\"use strict\";\nvar __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) {\n    function adopt(value) { return value instanceof P ? value : new P(function (resolve) { resolve(value); }); }\n    return new (P || (P = Promise))(function (resolve, reject) {\n        function fulfilled(value) { try { step(generator.next(value)); } catch (e) { reject(e); } }\n        function rejected(value) { try { step(generator[\"throw\"](value)); } catch (e) { reject(e); } }\n        function step(result) { result.done ? resolve(result.value) : adopt(result.value).then(fulfilled, rejected); }\n        step((generator = generator.apply(thisArg, _arguments || [])).next());\n    });\n};\nObject.defineProperty(exports, \"__esModule\", { value: true });\nexports.summary = exports.markdownSummary = exports.SUMMARY_DOCS_URL = exports.SUMMARY_ENV_VAR = void 0;\nconst os_1 = require(\"os\");\nconst fs_1 = require(\"fs\");\nconst { access, appendFile, writeFile } = fs_1.promises;\nexports.SUMMARY_ENV_VAR = 'GITHUB_STEP_SUMMARY';\nexports.SUMMARY_DOCS_URL = 'https://docs.github.com/actions/using-workflows/workflow-commands-for-github-actions#adding-a-job-summary';\nclass Summary {\n    constructor() {\n        this._buffer = '';\n    }\n    /**\n     * Finds the summary file path from the environment, rejects if env var is not found or file does not exist\n     * Also checks r/w permissions.\n     *\n     * @returns step summary file path\n     */\n    filePath() {\n        return __awaiter(this, void 0, void 0, function* () {\n            if (this._filePath) {\n                return this._filePath;\n            }\n            const pathFromEnv = process.env[exports.SUMMARY_ENV_VAR];\n            if (!pathFromEnv) {\n                throw new Error(`Unable to find environment variable for $${exports.SUMMARY_ENV_VAR}. Check if your runtime environment supports job summaries.`);\n            }\n            try {\n                yield access(pathFromEnv, fs_1.constants.R_OK | fs_1.constants.W_OK);\n            }\n            catch (_a) {\n                throw new Error(`Unable to access summary file: '${pathFromEnv}'. Check if the file has correct read/write permissions.`);\n            }\n            this._filePath = pathFromEnv;\n            return this._filePath;\n        });\n    }\n    /**\n     * Wraps content in an HTML tag, adding any HTML attributes\n     *\n     * @param {string} tag HTML tag to wrap\n     * @param {string | null} content content within the tag\n     * @param {[attribute: string]: string} attrs key-value list of HTML attributes to add\n     *\n     * @returns {string} content wrapped in HTML element\n     */\n    wrap(tag, content, attrs = {}) {\n        const htmlAttrs = Object.entries(attrs)\n            .map(([key, value]) => ` ${key}=\"${value}\"`)\n            .join('');\n        if (!content) {\n            return `<${tag}${htmlAttrs}>`;\n        }\n        return `<${tag}${htmlAttrs}>${content}</${tag}>`;\n    }\n    /**\n     * Writes text in the buffer to the summary buffer file and empties buffer. Will append by default.\n     *\n     * @param {SummaryWriteOptions} [options] (optional) options for write operation\n     *\n     * @returns {Promise<Summary>} summary instance\n     */\n    write(options) {\n        return __awaiter(this, void 0, void 0, function* () {\n            const overwrite = !!(options === null || options === void 0 ? void 0 : options.overwrite);\n            const filePath = yield this.filePath();\n            const writeFunc = overwrite ? writeFile : appendFile;\n            yield writeFunc(filePath, this._buffer, { encoding: 'utf8' });\n            return this.emptyBuffer();\n        });\n    }\n    /**\n     * Clears the summary buffer and wipes the summary file\n     *\n     * @returns {Summary} summary instance\n     */\n    clear() {\n        return __awaiter(this, void 0, void 0, function* () {\n            return this.emptyBuffer().write({ overwrite: true });\n        });\n    }\n    /**\n     * Returns the current summary buffer as a string\n     *\n     * @returns {string} string of summary buffer\n     */\n    stringify() {\n        return this._buffer;\n    }\n    /**\n     * If the summary buffer is empty\n     *\n     * @returns {boolen} true if the buffer is empty\n     */\n    isEmptyBuffer() {\n        return this._buffer.length === 0;\n    }\n    /**\n     * Resets the summary buffer without writing to summary file\n     *\n     * @returns {Summary} summary instance\n     */\n    emptyBuffer() {\n        this._buffer = '';\n        return this;\n    }\n    /**\n     * Adds raw text to the summary buffer\n     *\n     * @param {string} text content to add\n     * @param {boolean} [addEOL=false] (optional) append an EOL to the raw text (default: false)\n     *\n     * @returns {Summary} summary instance\n     */\n    addRaw(text, addEOL = false) {\n        this._buffer += text;\n        return addEOL ? this.addEOL() : this;\n    }\n    /**\n     * Adds the operating system-specific end-of-line marker to the buffer\n     *\n     * @returns {Summary} summary instance\n     */\n    addEOL() {\n        return this.addRaw(os_1.EOL);\n    }\n    /**\n     * Adds an HTML codeblock to the summary buffer\n     *\n     * @param {string} code content to render within fenced code block\n     * @param {string} lang (optional) language to syntax highlight code\n     *\n     * @returns {Summary} summary instance\n     */\n    addCodeBlock(code, lang) {\n        const attrs = Object.assign({}, (lang && { lang }));\n        const element = this.wrap('pre', this.wrap('code', code), attrs);\n        return this.addRaw(element).addEOL();\n    }\n    /**\n     * Adds an HTML list to the summary buffer\n     *\n     * @param {string[]} items list of items to render\n     * @param {boolean} [ordered=false] (optional) if the rendered list should be ordered or not (default: false)\n     *\n     * @returns {Summary} summary instance\n     */\n    addList(items, ordered = false) {\n        const tag = ordered ? 'ol' : 'ul';\n        const listItems = items.map(item => this.wrap('li', item)).join('');\n        const element = this.wrap(tag, listItems);\n        return this.addRaw(element).addEOL();\n    }\n    /**\n     * Adds an HTML table to the summary buffer\n     *\n     * @param {SummaryTableCell[]} rows table rows\n     *\n     * @returns {Summary} summary instance\n     */\n    addTable(rows) {\n        const tableBody = rows\n            .map(row => {\n            const cells = row\n                .map(cell => {\n                if (typeof cell === 'string') {\n                    return this.wrap('td', cell);\n                }\n                const { header, data, colspan, rowspan } = cell;\n                const tag = header ? 'th' : 'td';\n                const attrs = Object.assign(Object.assign({}, (colspan && { colspan })), (rowspan && { rowspan }));\n                return this.wrap(tag, data, attrs);\n            })\n                .join('');\n            return this.wrap('tr', cells);\n        })\n            .join('');\n        const element = this.wrap('table', tableBody);\n        return this.addRaw(element).addEOL();\n    }\n    /**\n     * Adds a collapsable HTML details element to the summary buffer\n     *\n     * @param {string} label text for the closed state\n     * @param {string} content collapsable content\n     *\n     * @returns {Summary} summary instance\n     */\n    addDetails(label, content) {\n        const element = this.wrap('details', this.wrap('summary', label) + content);\n        return this.addRaw(element).addEOL();\n    }\n    /**\n     * Adds an HTML image tag to the summary buffer\n     *\n     * @param {string} src path to the image you to embed\n     * @param {string} alt text description of the image\n     * @param {SummaryImageOptions} options (optional) addition image attributes\n     *\n     * @returns {Summary} summary instance\n     */\n    addImage(src, alt, options) {\n        const { width, height } = options || {};\n        const attrs = Object.assign(Object.assign({}, (width && { width })), (height && { height }));\n        const element = this.wrap('img', null, Object.assign({ src, alt }, attrs));\n        return this.addRaw(element).addEOL();\n    }\n    /**\n     * Adds an HTML section heading element\n     *\n     * @param {string} text heading text\n     * @param {number | string} [level=1] (optional) the heading level, default: 1\n     *\n     * @returns {Summary} summary instance\n     */\n    addHeading(text, level) {\n        const tag = `h${level}`;\n        const allowedTag = ['h1', 'h2', 'h3', 'h4', 'h5', 'h6'].includes(tag)\n            ? tag\n            : 'h1';\n        const element = this.wrap(allowedTag, text);\n        return this.addRaw(element).addEOL();\n    }\n    /**\n     * Adds an HTML thematic break (<hr>) to the summary buffer\n     *\n     * @returns {Summary} summary instance\n     */\n    addSeparator() {\n        const element = this.wrap('hr', null);\n        return this.addRaw(element).addEOL();\n    }\n    /**\n     * Adds an HTML line break (<br>) to the summary buffer\n     *\n     * @returns {Summary} summary instance\n     */\n    addBreak() {\n        const element = this.wrap('br', null);\n        return this.addRaw(element).addEOL();\n    }\n    /**\n     * Adds an HTML blockquote to the summary buffer\n     *\n     * @param {string} text quote text\n     * @param {string} cite (optional) citation url\n     *\n     * @returns {Summary} summary instance\n     */\n    addQuote(text, cite) {\n        const attrs = Object.assign({}, (cite && { cite }));\n        const element = this.wrap('blockquote', text, attrs);\n        return this.addRaw(element).addEOL();\n    }\n    /**\n     * Adds an HTML anchor tag to the summary buffer\n     *\n     * @param {string} text link text/content\n     * @param {string} href hyperlink\n     *\n     * @returns {Summary} summary instance\n     */\n    addLink(text, href) {\n        const element = this.wrap('a', text, { href });\n        return this.addRaw(element).addEOL();\n    }\n}\nconst _summary = new Summary();\n/**\n * @deprecated use `core.summary`\n */\nexports.markdownSummary = _summary;\nexports.summary = _summary;\n//# sourceMappingURL=summary.js.map","\"use strict\";\n// We use any as a valid input type\n/* eslint-disable @typescript-eslint/no-explicit-any */\nObject.defineProperty(exports, \"__esModule\", { value: true });\nexports.toCommandProperties = exports.toCommandValue = void 0;\n/**\n * Sanitizes an input into a string so it can be passed into issueCommand safely\n * @param input input to sanitize into a string\n */\nfunction toCommandValue(input) {\n    if (input === null || input === undefined) {\n        return '';\n    }\n    else if (typeof input === 'string' || input instanceof String) {\n        return input;\n    }\n    return JSON.stringify(input);\n}\nexports.toCommandValue = toCommandValue;\n/**\n *\n * @param annotationProperties\n * @returns The command properties to send with the actual annotation command\n * See IssueCommandProperties: https://github.com/actions/runner/blob/main/src/Runner.Worker/ActionCommandManager.cs#L646\n */\nfunction toCommandProperties(annotationProperties) {\n    if (!Object.keys(annotationProperties).length) {\n        return {};\n    }\n    return {\n        title: annotationProperties.title,\n        file: annotationProperties.file,\n        line: annotationProperties.startLine,\n        endLine: annotationProperties.endLine,\n        col: annotationProperties.startColumn,\n        endColumn: annotationProperties.endColumn\n    };\n}\nexports.toCommandProperties = toCommandProperties;\n//# sourceMappingURL=utils.js.map","\"use strict\";\nvar __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) {\n    function adopt(value) { return value instanceof P ? value : new P(function (resolve) { resolve(value); }); }\n    return new (P || (P = Promise))(function (resolve, reject) {\n        function fulfilled(value) { try { step(generator.next(value)); } catch (e) { reject(e); } }\n        function rejected(value) { try { step(generator[\"throw\"](value)); } catch (e) { reject(e); } }\n        function step(result) { result.done ? resolve(result.value) : adopt(result.value).then(fulfilled, rejected); }\n        step((generator = generator.apply(thisArg, _arguments || [])).next());\n    });\n};\nObject.defineProperty(exports, \"__esModule\", { value: true });\nexports.PersonalAccessTokenCredentialHandler = exports.BearerCredentialHandler = exports.BasicCredentialHandler = void 0;\nclass BasicCredentialHandler {\n    constructor(username, password) {\n        this.username = username;\n        this.password = password;\n    }\n    prepareRequest(options) {\n        if (!options.headers) {\n            throw Error('The request has no headers');\n        }\n        options.headers['Authorization'] = `Basic ${Buffer.from(`${this.username}:${this.password}`).toString('base64')}`;\n    }\n    // This handler cannot handle 401\n    canHandleAuthentication() {\n        return false;\n    }\n    handleAuthentication() {\n        return __awaiter(this, void 0, void 0, function* () {\n            throw new Error('not implemented');\n        });\n    }\n}\nexports.BasicCredentialHandler = BasicCredentialHandler;\nclass BearerCredentialHandler {\n    constructor(token) {\n        this.token = token;\n    }\n    // currently implements pre-authorization\n    // TODO: support preAuth = false where it hooks on 401\n    prepareRequest(options) {\n        if (!options.headers) {\n            throw Error('The request has no headers');\n        }\n        options.headers['Authorization'] = `Bearer ${this.token}`;\n    }\n    // This handler cannot handle 401\n    canHandleAuthentication() {\n        return false;\n    }\n    handleAuthentication() {\n        return __awaiter(this, void 0, void 0, function* () {\n            throw new Error('not implemented');\n        });\n    }\n}\nexports.BearerCredentialHandler = BearerCredentialHandler;\nclass PersonalAccessTokenCredentialHandler {\n    constructor(token) {\n        this.token = token;\n    }\n    // currently implements pre-authorization\n    // TODO: support preAuth = false where it hooks on 401\n    prepareRequest(options) {\n        if (!options.headers) {\n            throw Error('The request has no headers');\n        }\n        options.headers['Authorization'] = `Basic ${Buffer.from(`PAT:${this.token}`).toString('base64')}`;\n    }\n    // This handler cannot handle 401\n    canHandleAuthentication() {\n        return false;\n    }\n    handleAuthentication() {\n        return __awaiter(this, void 0, void 0, function* () {\n            throw new Error('not implemented');\n        });\n    }\n}\nexports.PersonalAccessTokenCredentialHandler = PersonalAccessTokenCredentialHandler;\n//# sourceMappingURL=auth.js.map","\"use strict\";\n/* eslint-disable @typescript-eslint/no-explicit-any */\nvar __createBinding = (this && this.__createBinding) || (Object.create ? (function(o, m, k, k2) {\n    if (k2 === undefined) k2 = k;\n    Object.defineProperty(o, k2, { enumerable: true, get: function() { return m[k]; } });\n}) : (function(o, m, k, k2) {\n    if (k2 === undefined) k2 = k;\n    o[k2] = m[k];\n}));\nvar __setModuleDefault = (this && this.__setModuleDefault) || (Object.create ? (function(o, v) {\n    Object.defineProperty(o, \"default\", { enumerable: true, value: v });\n}) : function(o, v) {\n    o[\"default\"] = v;\n});\nvar __importStar = (this && this.__importStar) || function (mod) {\n    if (mod && mod.__esModule) return mod;\n    var result = {};\n    if (mod != null) for (var k in mod) if (k !== \"default\" && Object.hasOwnProperty.call(mod, k)) __createBinding(result, mod, k);\n    __setModuleDefault(result, mod);\n    return result;\n};\nvar __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) {\n    function adopt(value) { return value instanceof P ? value : new P(function (resolve) { resolve(value); }); }\n    return new (P || (P = Promise))(function (resolve, reject) {\n        function fulfilled(value) { try { step(generator.next(value)); } catch (e) { reject(e); } }\n        function rejected(value) { try { step(generator[\"throw\"](value)); } catch (e) { reject(e); } }\n        function step(result) { result.done ? resolve(result.value) : adopt(result.value).then(fulfilled, rejected); }\n        step((generator = generator.apply(thisArg, _arguments || [])).next());\n    });\n};\nObject.defineProperty(exports, \"__esModule\", { value: true });\nexports.HttpClient = exports.isHttps = exports.HttpClientResponse = exports.HttpClientError = exports.getProxyUrl = exports.MediaTypes = exports.Headers = exports.HttpCodes = void 0;\nconst http = __importStar(require(\"http\"));\nconst https = __importStar(require(\"https\"));\nconst pm = __importStar(require(\"./proxy\"));\nconst tunnel = __importStar(require(\"tunnel\"));\nvar HttpCodes;\n(function (HttpCodes) {\n    HttpCodes[HttpCodes[\"OK\"] = 200] = \"OK\";\n    HttpCodes[HttpCodes[\"MultipleChoices\"] = 300] = \"MultipleChoices\";\n    HttpCodes[HttpCodes[\"MovedPermanently\"] = 301] = \"MovedPermanently\";\n    HttpCodes[HttpCodes[\"ResourceMoved\"] = 302] = \"ResourceMoved\";\n    HttpCodes[HttpCodes[\"SeeOther\"] = 303] = \"SeeOther\";\n    HttpCodes[HttpCodes[\"NotModified\"] = 304] = \"NotModified\";\n    HttpCodes[HttpCodes[\"UseProxy\"] = 305] = \"UseProxy\";\n    HttpCodes[HttpCodes[\"SwitchProxy\"] = 306] = \"SwitchProxy\";\n    HttpCodes[HttpCodes[\"TemporaryRedirect\"] = 307] = \"TemporaryRedirect\";\n    HttpCodes[HttpCodes[\"PermanentRedirect\"] = 308] = \"PermanentRedirect\";\n    HttpCodes[HttpCodes[\"BadRequest\"] = 400] = \"BadRequest\";\n    HttpCodes[HttpCodes[\"Unauthorized\"] = 401] = \"Unauthorized\";\n    HttpCodes[HttpCodes[\"PaymentRequired\"] = 402] = \"PaymentRequired\";\n    HttpCodes[HttpCodes[\"Forbidden\"] = 403] = \"Forbidden\";\n    HttpCodes[HttpCodes[\"NotFound\"] = 404] = \"NotFound\";\n    HttpCodes[HttpCodes[\"MethodNotAllowed\"] = 405] = \"MethodNotAllowed\";\n    HttpCodes[HttpCodes[\"NotAcceptable\"] = 406] = \"NotAcceptable\";\n    HttpCodes[HttpCodes[\"ProxyAuthenticationRequired\"] = 407] = \"ProxyAuthenticationRequired\";\n    HttpCodes[HttpCodes[\"RequestTimeout\"] = 408] = \"RequestTimeout\";\n    HttpCodes[HttpCodes[\"Conflict\"] = 409] = \"Conflict\";\n    HttpCodes[HttpCodes[\"Gone\"] = 410] = \"Gone\";\n    HttpCodes[HttpCodes[\"TooManyRequests\"] = 429] = \"TooManyRequests\";\n    HttpCodes[HttpCodes[\"InternalServerError\"] = 500] = \"InternalServerError\";\n    HttpCodes[HttpCodes[\"NotImplemented\"] = 501] = \"NotImplemented\";\n    HttpCodes[HttpCodes[\"BadGateway\"] = 502] = \"BadGateway\";\n    HttpCodes[HttpCodes[\"ServiceUnavailable\"] = 503] = \"ServiceUnavailable\";\n    HttpCodes[HttpCodes[\"GatewayTimeout\"] = 504] = \"GatewayTimeout\";\n})(HttpCodes = exports.HttpCodes || (exports.HttpCodes = {}));\nvar Headers;\n(function (Headers) {\n    Headers[\"Accept\"] = \"accept\";\n    Headers[\"ContentType\"] = \"content-type\";\n})(Headers = exports.Headers || (exports.Headers = {}));\nvar MediaTypes;\n(function (MediaTypes) {\n    MediaTypes[\"ApplicationJson\"] = \"application/json\";\n})(MediaTypes = exports.MediaTypes || (exports.MediaTypes = {}));\n/**\n * Returns the proxy URL, depending upon the supplied url and proxy environment variables.\n * @param serverUrl  The server URL where the request will be sent. For example, https://api.github.com\n */\nfunction getProxyUrl(serverUrl) {\n    const proxyUrl = pm.getProxyUrl(new URL(serverUrl));\n    return proxyUrl ? proxyUrl.href : '';\n}\nexports.getProxyUrl = getProxyUrl;\nconst HttpRedirectCodes = [\n    HttpCodes.MovedPermanently,\n    HttpCodes.ResourceMoved,\n    HttpCodes.SeeOther,\n    HttpCodes.TemporaryRedirect,\n    HttpCodes.PermanentRedirect\n];\nconst HttpResponseRetryCodes = [\n    HttpCodes.BadGateway,\n    HttpCodes.ServiceUnavailable,\n    HttpCodes.GatewayTimeout\n];\nconst RetryableHttpVerbs = ['OPTIONS', 'GET', 'DELETE', 'HEAD'];\nconst ExponentialBackoffCeiling = 10;\nconst ExponentialBackoffTimeSlice = 5;\nclass HttpClientError extends Error {\n    constructor(message, statusCode) {\n        super(message);\n        this.name = 'HttpClientError';\n        this.statusCode = statusCode;\n        Object.setPrototypeOf(this, HttpClientError.prototype);\n    }\n}\nexports.HttpClientError = HttpClientError;\nclass HttpClientResponse {\n    constructor(message) {\n        this.message = message;\n    }\n    readBody() {\n        return __awaiter(this, void 0, void 0, function* () {\n            return new Promise((resolve) => __awaiter(this, void 0, void 0, function* () {\n                let output = Buffer.alloc(0);\n                this.message.on('data', (chunk) => {\n                    output = Buffer.concat([output, chunk]);\n                });\n                this.message.on('end', () => {\n                    resolve(output.toString());\n                });\n            }));\n        });\n    }\n}\nexports.HttpClientResponse = HttpClientResponse;\nfunction isHttps(requestUrl) {\n    const parsedUrl = new URL(requestUrl);\n    return parsedUrl.protocol === 'https:';\n}\nexports.isHttps = isHttps;\nclass HttpClient {\n    constructor(userAgent, handlers, requestOptions) {\n        this._ignoreSslError = false;\n        this._allowRedirects = true;\n        this._allowRedirectDowngrade = false;\n        this._maxRedirects = 50;\n        this._allowRetries = false;\n        this._maxRetries = 1;\n        this._keepAlive = false;\n        this._disposed = false;\n        this.userAgent = userAgent;\n        this.handlers = handlers || [];\n        this.requestOptions = requestOptions;\n        if (requestOptions) {\n            if (requestOptions.ignoreSslError != null) {\n                this._ignoreSslError = requestOptions.ignoreSslError;\n            }\n            this._socketTimeout = requestOptions.socketTimeout;\n            if (requestOptions.allowRedirects != null) {\n                this._allowRedirects = requestOptions.allowRedirects;\n            }\n            if (requestOptions.allowRedirectDowngrade != null) {\n                this._allowRedirectDowngrade = requestOptions.allowRedirectDowngrade;\n            }\n            if (requestOptions.maxRedirects != null) {\n                this._maxRedirects = Math.max(requestOptions.maxRedirects, 0);\n            }\n            if (requestOptions.keepAlive != null) {\n                this._keepAlive = requestOptions.keepAlive;\n            }\n            if (requestOptions.allowRetries != null) {\n                this._allowRetries = requestOptions.allowRetries;\n            }\n            if (requestOptions.maxRetries != null) {\n                this._maxRetries = requestOptions.maxRetries;\n            }\n        }\n    }\n    options(requestUrl, additionalHeaders) {\n        return __awaiter(this, void 0, void 0, function* () {\n            return this.request('OPTIONS', requestUrl, null, additionalHeaders || {});\n        });\n    }\n    get(requestUrl, additionalHeaders) {\n        return __awaiter(this, void 0, void 0, function* () {\n            return this.request('GET', requestUrl, null, additionalHeaders || {});\n        });\n    }\n    del(requestUrl, additionalHeaders) {\n        return __awaiter(this, void 0, void 0, function* () {\n            return this.request('DELETE', requestUrl, null, additionalHeaders || {});\n        });\n    }\n    post(requestUrl, data, additionalHeaders) {\n        return __awaiter(this, void 0, void 0, function* () {\n            return this.request('POST', requestUrl, data, additionalHeaders || {});\n        });\n    }\n    patch(requestUrl, data, additionalHeaders) {\n        return __awaiter(this, void 0, void 0, function* () {\n            return this.request('PATCH', requestUrl, data, additionalHeaders || {});\n        });\n    }\n    put(requestUrl, data, additionalHeaders) {\n        return __awaiter(this, void 0, void 0, function* () {\n            return this.request('PUT', requestUrl, data, additionalHeaders || {});\n        });\n    }\n    head(requestUrl, additionalHeaders) {\n        return __awaiter(this, void 0, void 0, function* () {\n            return this.request('HEAD', requestUrl, null, additionalHeaders || {});\n        });\n    }\n    sendStream(verb, requestUrl, stream, additionalHeaders) {\n        return __awaiter(this, void 0, void 0, function* () {\n            return this.request(verb, requestUrl, stream, additionalHeaders);\n        });\n    }\n    /**\n     * Gets a typed object from an endpoint\n     * Be aware that not found returns a null.  Other errors (4xx, 5xx) reject the promise\n     */\n    getJson(requestUrl, additionalHeaders = {}) {\n        return __awaiter(this, void 0, void 0, function* () {\n            additionalHeaders[Headers.Accept] = this._getExistingOrDefaultHeader(additionalHeaders, Headers.Accept, MediaTypes.ApplicationJson);\n            const res = yield this.get(requestUrl, additionalHeaders);\n            return this._processResponse(res, this.requestOptions);\n        });\n    }\n    postJson(requestUrl, obj, additionalHeaders = {}) {\n        return __awaiter(this, void 0, void 0, function* () {\n            const data = JSON.stringify(obj, null, 2);\n            additionalHeaders[Headers.Accept] = this._getExistingOrDefaultHeader(additionalHeaders, Headers.Accept, MediaTypes.ApplicationJson);\n            additionalHeaders[Headers.ContentType] = this._getExistingOrDefaultHeader(additionalHeaders, Headers.ContentType, MediaTypes.ApplicationJson);\n            const res = yield this.post(requestUrl, data, additionalHeaders);\n            return this._processResponse(res, this.requestOptions);\n        });\n    }\n    putJson(requestUrl, obj, additionalHeaders = {}) {\n        return __awaiter(this, void 0, void 0, function* () {\n            const data = JSON.stringify(obj, null, 2);\n            additionalHeaders[Headers.Accept] = this._getExistingOrDefaultHeader(additionalHeaders, Headers.Accept, MediaTypes.ApplicationJson);\n            additionalHeaders[Headers.ContentType] = this._getExistingOrDefaultHeader(additionalHeaders, Headers.ContentType, MediaTypes.ApplicationJson);\n            const res = yield this.put(requestUrl, data, additionalHeaders);\n            return this._processResponse(res, this.requestOptions);\n        });\n    }\n    patchJson(requestUrl, obj, additionalHeaders = {}) {\n        return __awaiter(this, void 0, void 0, function* () {\n            const data = JSON.stringify(obj, null, 2);\n            additionalHeaders[Headers.Accept] = this._getExistingOrDefaultHeader(additionalHeaders, Headers.Accept, MediaTypes.ApplicationJson);\n            additionalHeaders[Headers.ContentType] = this._getExistingOrDefaultHeader(additionalHeaders, Headers.ContentType, MediaTypes.ApplicationJson);\n            const res = yield this.patch(requestUrl, data, additionalHeaders);\n            return this._processResponse(res, this.requestOptions);\n        });\n    }\n    /**\n     * Makes a raw http request.\n     * All other methods such as get, post, patch, and request ultimately call this.\n     * Prefer get, del, post and patch\n     */\n    request(verb, requestUrl, data, headers) {\n        return __awaiter(this, void 0, void 0, function* () {\n            if (this._disposed) {\n                throw new Error('Client has already been disposed.');\n            }\n            const parsedUrl = new URL(requestUrl);\n            let info = this._prepareRequest(verb, parsedUrl, headers);\n            // Only perform retries on reads since writes may not be idempotent.\n            const maxTries = this._allowRetries && RetryableHttpVerbs.includes(verb)\n                ? this._maxRetries + 1\n                : 1;\n            let numTries = 0;\n            let response;\n            do {\n                response = yield this.requestRaw(info, data);\n                // Check if it's an authentication challenge\n                if (response &&\n                    response.message &&\n                    response.message.statusCode === HttpCodes.Unauthorized) {\n                    let authenticationHandler;\n                    for (const handler of this.handlers) {\n                        if (handler.canHandleAuthentication(response)) {\n                            authenticationHandler = handler;\n                            break;\n                        }\n                    }\n                    if (authenticationHandler) {\n                        return authenticationHandler.handleAuthentication(this, info, data);\n                    }\n                    else {\n                        // We have received an unauthorized response but have no handlers to handle it.\n                        // Let the response return to the caller.\n                        return response;\n                    }\n                }\n                let redirectsRemaining = this._maxRedirects;\n                while (response.message.statusCode &&\n                    HttpRedirectCodes.includes(response.message.statusCode) &&\n                    this._allowRedirects &&\n                    redirectsRemaining > 0) {\n                    const redirectUrl = response.message.headers['location'];\n                    if (!redirectUrl) {\n                        // if there's no location to redirect to, we won't\n                        break;\n                    }\n                    const parsedRedirectUrl = new URL(redirectUrl);\n                    if (parsedUrl.protocol === 'https:' &&\n                        parsedUrl.protocol !== parsedRedirectUrl.protocol &&\n                        !this._allowRedirectDowngrade) {\n                        throw new Error('Redirect from HTTPS to HTTP protocol. This downgrade is not allowed for security reasons. If you want to allow this behavior, set the allowRedirectDowngrade option to true.');\n                    }\n                    // we need to finish reading the response before reassigning response\n                    // which will leak the open socket.\n                    yield response.readBody();\n                    // strip authorization header if redirected to a different hostname\n                    if (parsedRedirectUrl.hostname !== parsedUrl.hostname) {\n                        for (const header in headers) {\n                            // header names are case insensitive\n                            if (header.toLowerCase() === 'authorization') {\n                                delete headers[header];\n                            }\n                        }\n                    }\n                    // let's make the request with the new redirectUrl\n                    info = this._prepareRequest(verb, parsedRedirectUrl, headers);\n                    response = yield this.requestRaw(info, data);\n                    redirectsRemaining--;\n                }\n                if (!response.message.statusCode ||\n                    !HttpResponseRetryCodes.includes(response.message.statusCode)) {\n                    // If not a retry code, return immediately instead of retrying\n                    return response;\n                }\n                numTries += 1;\n                if (numTries < maxTries) {\n                    yield response.readBody();\n                    yield this._performExponentialBackoff(numTries);\n                }\n            } while (numTries < maxTries);\n            return response;\n        });\n    }\n    /**\n     * Needs to be called if keepAlive is set to true in request options.\n     */\n    dispose() {\n        if (this._agent) {\n            this._agent.destroy();\n        }\n        this._disposed = true;\n    }\n    /**\n     * Raw request.\n     * @param info\n     * @param data\n     */\n    requestRaw(info, data) {\n        return __awaiter(this, void 0, void 0, function* () {\n            return new Promise((resolve, reject) => {\n                function callbackForResult(err, res) {\n                    if (err) {\n                        reject(err);\n                    }\n                    else if (!res) {\n                        // If `err` is not passed, then `res` must be passed.\n                        reject(new Error('Unknown error'));\n                    }\n                    else {\n                        resolve(res);\n                    }\n                }\n                this.requestRawWithCallback(info, data, callbackForResult);\n            });\n        });\n    }\n    /**\n     * Raw request with callback.\n     * @param info\n     * @param data\n     * @param onResult\n     */\n    requestRawWithCallback(info, data, onResult) {\n        if (typeof data === 'string') {\n            if (!info.options.headers) {\n                info.options.headers = {};\n            }\n            info.options.headers['Content-Length'] = Buffer.byteLength(data, 'utf8');\n        }\n        let callbackCalled = false;\n        function handleResult(err, res) {\n            if (!callbackCalled) {\n                callbackCalled = true;\n                onResult(err, res);\n            }\n        }\n        const req = info.httpModule.request(info.options, (msg) => {\n            const res = new HttpClientResponse(msg);\n            handleResult(undefined, res);\n        });\n        let socket;\n        req.on('socket', sock => {\n            socket = sock;\n        });\n        // If we ever get disconnected, we want the socket to timeout eventually\n        req.setTimeout(this._socketTimeout || 3 * 60000, () => {\n            if (socket) {\n                socket.end();\n            }\n            handleResult(new Error(`Request timeout: ${info.options.path}`));\n        });\n        req.on('error', function (err) {\n            // err has statusCode property\n            // res should have headers\n            handleResult(err);\n        });\n        if (data && typeof data === 'string') {\n            req.write(data, 'utf8');\n        }\n        if (data && typeof data !== 'string') {\n            data.on('close', function () {\n                req.end();\n            });\n            data.pipe(req);\n        }\n        else {\n            req.end();\n        }\n    }\n    /**\n     * Gets an http agent. This function is useful when you need an http agent that handles\n     * routing through a proxy server - depending upon the url and proxy environment variables.\n     * @param serverUrl  The server URL where the request will be sent. For example, https://api.github.com\n     */\n    getAgent(serverUrl) {\n        const parsedUrl = new URL(serverUrl);\n        return this._getAgent(parsedUrl);\n    }\n    _prepareRequest(method, requestUrl, headers) {\n        const info = {};\n        info.parsedUrl = requestUrl;\n        const usingSsl = info.parsedUrl.protocol === 'https:';\n        info.httpModule = usingSsl ? https : http;\n        const defaultPort = usingSsl ? 443 : 80;\n        info.options = {};\n        info.options.host = info.parsedUrl.hostname;\n        info.options.port = info.parsedUrl.port\n            ? parseInt(info.parsedUrl.port)\n            : defaultPort;\n        info.options.path =\n            (info.parsedUrl.pathname || '') + (info.parsedUrl.search || '');\n        info.options.method = method;\n        info.options.headers = this._mergeHeaders(headers);\n        if (this.userAgent != null) {\n            info.options.headers['user-agent'] = this.userAgent;\n        }\n        info.options.agent = this._getAgent(info.parsedUrl);\n        // gives handlers an opportunity to participate\n        if (this.handlers) {\n            for (const handler of this.handlers) {\n                handler.prepareRequest(info.options);\n            }\n        }\n        return info;\n    }\n    _mergeHeaders(headers) {\n        if (this.requestOptions && this.requestOptions.headers) {\n            return Object.assign({}, lowercaseKeys(this.requestOptions.headers), lowercaseKeys(headers || {}));\n        }\n        return lowercaseKeys(headers || {});\n    }\n    _getExistingOrDefaultHeader(additionalHeaders, header, _default) {\n        let clientHeader;\n        if (this.requestOptions && this.requestOptions.headers) {\n            clientHeader = lowercaseKeys(this.requestOptions.headers)[header];\n        }\n        return additionalHeaders[header] || clientHeader || _default;\n    }\n    _getAgent(parsedUrl) {\n        let agent;\n        const proxyUrl = pm.getProxyUrl(parsedUrl);\n        const useProxy = proxyUrl && proxyUrl.hostname;\n        if (this._keepAlive && useProxy) {\n            agent = this._proxyAgent;\n        }\n        if (this._keepAlive && !useProxy) {\n            agent = this._agent;\n        }\n        // if agent is already assigned use that agent.\n        if (agent) {\n            return agent;\n        }\n        const usingSsl = parsedUrl.protocol === 'https:';\n        let maxSockets = 100;\n        if (this.requestOptions) {\n            maxSockets = this.requestOptions.maxSockets || http.globalAgent.maxSockets;\n        }\n        // This is `useProxy` again, but we need to check `proxyURl` directly for TypeScripts's flow analysis.\n        if (proxyUrl && proxyUrl.hostname) {\n            const agentOptions = {\n                maxSockets,\n                keepAlive: this._keepAlive,\n                proxy: Object.assign(Object.assign({}, ((proxyUrl.username || proxyUrl.password) && {\n                    proxyAuth: `${proxyUrl.username}:${proxyUrl.password}`\n                })), { host: proxyUrl.hostname, port: proxyUrl.port })\n            };\n            let tunnelAgent;\n            const overHttps = proxyUrl.protocol === 'https:';\n            if (usingSsl) {\n                tunnelAgent = overHttps ? tunnel.httpsOverHttps : tunnel.httpsOverHttp;\n            }\n            else {\n                tunnelAgent = overHttps ? tunnel.httpOverHttps : tunnel.httpOverHttp;\n            }\n            agent = tunnelAgent(agentOptions);\n            this._proxyAgent = agent;\n        }\n        // if reusing agent across request and tunneling agent isn't assigned create a new agent\n        if (this._keepAlive && !agent) {\n            const options = { keepAlive: this._keepAlive, maxSockets };\n            agent = usingSsl ? new https.Agent(options) : new http.Agent(options);\n            this._agent = agent;\n        }\n        // if not using private agent and tunnel agent isn't setup then use global agent\n        if (!agent) {\n            agent = usingSsl ? https.globalAgent : http.globalAgent;\n        }\n        if (usingSsl && this._ignoreSslError) {\n            // we don't want to set NODE_TLS_REJECT_UNAUTHORIZED=0 since that will affect request for entire process\n            // http.RequestOptions doesn't expose a way to modify RequestOptions.agent.options\n            // we have to cast it to any and change it directly\n            agent.options = Object.assign(agent.options || {}, {\n                rejectUnauthorized: false\n            });\n        }\n        return agent;\n    }\n    _performExponentialBackoff(retryNumber) {\n        return __awaiter(this, void 0, void 0, function* () {\n            retryNumber = Math.min(ExponentialBackoffCeiling, retryNumber);\n            const ms = ExponentialBackoffTimeSlice * Math.pow(2, retryNumber);\n            return new Promise(resolve => setTimeout(() => resolve(), ms));\n        });\n    }\n    _processResponse(res, options) {\n        return __awaiter(this, void 0, void 0, function* () {\n            return new Promise((resolve, reject) => __awaiter(this, void 0, void 0, function* () {\n                const statusCode = res.message.statusCode || 0;\n                const response = {\n                    statusCode,\n                    result: null,\n                    headers: {}\n                };\n                // not found leads to null obj returned\n                if (statusCode === HttpCodes.NotFound) {\n                    resolve(response);\n                }\n                // get the result from the body\n                function dateTimeDeserializer(key, value) {\n                    if (typeof value === 'string') {\n                        const a = new Date(value);\n                        if (!isNaN(a.valueOf())) {\n                            return a;\n                        }\n                    }\n                    return value;\n                }\n                let obj;\n                let contents;\n                try {\n                    contents = yield res.readBody();\n                    if (contents && contents.length > 0) {\n                        if (options && options.deserializeDates) {\n                            obj = JSON.parse(contents, dateTimeDeserializer);\n                        }\n                        else {\n                            obj = JSON.parse(contents);\n                        }\n                        response.result = obj;\n                    }\n                    response.headers = res.message.headers;\n                }\n                catch (err) {\n                    // Invalid resource (contents not json);  leaving result obj null\n                }\n                // note that 3xx redirects are handled by the http layer.\n                if (statusCode > 299) {\n                    let msg;\n                    // if exception/error in body, attempt to get better error\n                    if (obj && obj.message) {\n                        msg = obj.message;\n                    }\n                    else if (contents && contents.length > 0) {\n                        // it may be the case that the exception is in the body message as string\n                        msg = contents;\n                    }\n                    else {\n                        msg = `Failed request: (${statusCode})`;\n                    }\n                    const err = new HttpClientError(msg, statusCode);\n                    err.result = response.result;\n                    reject(err);\n                }\n                else {\n                    resolve(response);\n                }\n            }));\n        });\n    }\n}\nexports.HttpClient = HttpClient;\nconst lowercaseKeys = (obj) => Object.keys(obj).reduce((c, k) => ((c[k.toLowerCase()] = obj[k]), c), {});\n//# sourceMappingURL=index.js.map","\"use strict\";\nObject.defineProperty(exports, \"__esModule\", { value: true });\nexports.checkBypass = exports.getProxyUrl = void 0;\nfunction getProxyUrl(reqUrl) {\n    const usingSsl = reqUrl.protocol === 'https:';\n    if (checkBypass(reqUrl)) {\n        return undefined;\n    }\n    const proxyVar = (() => {\n        if (usingSsl) {\n            return process.env['https_proxy'] || process.env['HTTPS_PROXY'];\n        }\n        else {\n            return process.env['http_proxy'] || process.env['HTTP_PROXY'];\n        }\n    })();\n    if (proxyVar) {\n        return new URL(proxyVar);\n    }\n    else {\n        return undefined;\n    }\n}\nexports.getProxyUrl = getProxyUrl;\nfunction checkBypass(reqUrl) {\n    if (!reqUrl.hostname) {\n        return false;\n    }\n    const noProxy = process.env['no_proxy'] || process.env['NO_PROXY'] || '';\n    if (!noProxy) {\n        return false;\n    }\n    // Determine the request port\n    let reqPort;\n    if (reqUrl.port) {\n        reqPort = Number(reqUrl.port);\n    }\n    else if (reqUrl.protocol === 'http:') {\n        reqPort = 80;\n    }\n    else if (reqUrl.protocol === 'https:') {\n        reqPort = 443;\n    }\n    // Format the request hostname and hostname with port\n    const upperReqHosts = [reqUrl.hostname.toUpperCase()];\n    if (typeof reqPort === 'number') {\n        upperReqHosts.push(`${upperReqHosts[0]}:${reqPort}`);\n    }\n    // Compare request host against noproxy\n    for (const upperNoProxyItem of noProxy\n        .split(',')\n        .map(x => x.trim().toUpperCase())\n        .filter(x => x)) {\n        if (upperReqHosts.some(x => x === upperNoProxyItem)) {\n            return true;\n        }\n    }\n    return false;\n}\nexports.checkBypass = checkBypass;\n//# sourceMappingURL=proxy.js.map","/**\n * @license\n * Lodash <https://lodash.com/>\n * Copyright OpenJS Foundation and other contributors <https://openjsf.org/>\n * Released under MIT license <https://lodash.com/license>\n * Based on Underscore.js 1.8.3 <http://underscorejs.org/LICENSE>\n * Copyright Jeremy Ashkenas, DocumentCloud and Investigative Reporters & Editors\n */\n;(function() {\n\n  /** Used as a safe reference for `undefined` in pre-ES5 environments. */\n  var undefined;\n\n  /** Used as the semantic version number. */\n  var VERSION = '4.17.21';\n\n  /** Used as the size to enable large array optimizations. */\n  var LARGE_ARRAY_SIZE = 200;\n\n  /** Error message constants. */\n  var CORE_ERROR_TEXT = 'Unsupported core-js use. Try https://npms.io/search?q=ponyfill.',\n      FUNC_ERROR_TEXT = 'Expected a function',\n      INVALID_TEMPL_VAR_ERROR_TEXT = 'Invalid `variable` option passed into `_.template`';\n\n  /** Used to stand-in for `undefined` hash values. */\n  var HASH_UNDEFINED = '__lodash_hash_undefined__';\n\n  /** Used as the maximum memoize cache size. */\n  var MAX_MEMOIZE_SIZE = 500;\n\n  /** Used as the internal argument placeholder. */\n  var PLACEHOLDER = '__lodash_placeholder__';\n\n  /** Used to compose bitmasks for cloning. */\n  var CLONE_DEEP_FLAG = 1,\n      CLONE_FLAT_FLAG = 2,\n      CLONE_SYMBOLS_FLAG = 4;\n\n  /** Used to compose bitmasks for value comparisons. */\n  var COMPARE_PARTIAL_FLAG = 1,\n      COMPARE_UNORDERED_FLAG = 2;\n\n  /** Used to compose bitmasks for function metadata. */\n  var WRAP_BIND_FLAG = 1,\n      WRAP_BIND_KEY_FLAG = 2,\n      WRAP_CURRY_BOUND_FLAG = 4,\n      WRAP_CURRY_FLAG = 8,\n      WRAP_CURRY_RIGHT_FLAG = 16,\n      WRAP_PARTIAL_FLAG = 32,\n      WRAP_PARTIAL_RIGHT_FLAG = 64,\n      WRAP_ARY_FLAG = 128,\n      WRAP_REARG_FLAG = 256,\n      WRAP_FLIP_FLAG = 512;\n\n  /** Used as default options for `_.truncate`. */\n  var DEFAULT_TRUNC_LENGTH = 30,\n      DEFAULT_TRUNC_OMISSION = '...';\n\n  /** Used to detect hot functions by number of calls within a span of milliseconds. */\n  var HOT_COUNT = 800,\n      HOT_SPAN = 16;\n\n  /** Used to indicate the type of lazy iteratees. */\n  var LAZY_FILTER_FLAG = 1,\n      LAZY_MAP_FLAG = 2,\n      LAZY_WHILE_FLAG = 3;\n\n  /** Used as references for various `Number` constants. */\n  var INFINITY = 1 / 0,\n      MAX_SAFE_INTEGER = 9007199254740991,\n      MAX_INTEGER = 1.7976931348623157e+308,\n      NAN = 0 / 0;\n\n  /** Used as references for the maximum length and index of an array. */\n  var MAX_ARRAY_LENGTH = 4294967295,\n      MAX_ARRAY_INDEX = MAX_ARRAY_LENGTH - 1,\n      HALF_MAX_ARRAY_LENGTH = MAX_ARRAY_LENGTH >>> 1;\n\n  /** Used to associate wrap methods with their bit flags. */\n  var wrapFlags = [\n    ['ary', WRAP_ARY_FLAG],\n    ['bind', WRAP_BIND_FLAG],\n    ['bindKey', WRAP_BIND_KEY_FLAG],\n    ['curry', WRAP_CURRY_FLAG],\n    ['curryRight', WRAP_CURRY_RIGHT_FLAG],\n    ['flip', WRAP_FLIP_FLAG],\n    ['partial', WRAP_PARTIAL_FLAG],\n    ['partialRight', WRAP_PARTIAL_RIGHT_FLAG],\n    ['rearg', WRAP_REARG_FLAG]\n  ];\n\n  /** `Object#toString` result references. */\n  var argsTag = '[object Arguments]',\n      arrayTag = '[object Array]',\n      asyncTag = '[object AsyncFunction]',\n      boolTag = '[object Boolean]',\n      dateTag = '[object Date]',\n      domExcTag = '[object DOMException]',\n      errorTag = '[object Error]',\n      funcTag = '[object Function]',\n      genTag = '[object GeneratorFunction]',\n      mapTag = '[object Map]',\n      numberTag = '[object Number]',\n      nullTag = '[object Null]',\n      objectTag = '[object Object]',\n      promiseTag = '[object Promise]',\n      proxyTag = '[object Proxy]',\n      regexpTag = '[object RegExp]',\n      setTag = '[object Set]',\n      stringTag = '[object String]',\n      symbolTag = '[object Symbol]',\n      undefinedTag = '[object Undefined]',\n      weakMapTag = '[object WeakMap]',\n      weakSetTag = '[object WeakSet]';\n\n  var arrayBufferTag = '[object ArrayBuffer]',\n      dataViewTag = '[object DataView]',\n      float32Tag = '[object Float32Array]',\n      float64Tag = '[object Float64Array]',\n      int8Tag = '[object Int8Array]',\n      int16Tag = '[object Int16Array]',\n      int32Tag = '[object Int32Array]',\n      uint8Tag = '[object Uint8Array]',\n      uint8ClampedTag = '[object Uint8ClampedArray]',\n      uint16Tag = '[object Uint16Array]',\n      uint32Tag = '[object Uint32Array]';\n\n  /** Used to match empty string literals in compiled template source. */\n  var reEmptyStringLeading = /\\b__p \\+= '';/g,\n      reEmptyStringMiddle = /\\b(__p \\+=) '' \\+/g,\n      reEmptyStringTrailing = /(__e\\(.*?\\)|\\b__t\\)) \\+\\n'';/g;\n\n  /** Used to match HTML entities and HTML characters. */\n  var reEscapedHtml = /&(?:amp|lt|gt|quot|#39);/g,\n      reUnescapedHtml = /[&<>\"']/g,\n      reHasEscapedHtml = RegExp(reEscapedHtml.source),\n      reHasUnescapedHtml = RegExp(reUnescapedHtml.source);\n\n  /** Used to match template delimiters. */\n  var reEscape = /<%-([\\s\\S]+?)%>/g,\n      reEvaluate = /<%([\\s\\S]+?)%>/g,\n      reInterpolate = /<%=([\\s\\S]+?)%>/g;\n\n  /** Used to match property names within property paths. */\n  var reIsDeepProp = /\\.|\\[(?:[^[\\]]*|([\"'])(?:(?!\\1)[^\\\\]|\\\\.)*?\\1)\\]/,\n      reIsPlainProp = /^\\w*$/,\n      rePropName = /[^.[\\]]+|\\[(?:(-?\\d+(?:\\.\\d+)?)|([\"'])((?:(?!\\2)[^\\\\]|\\\\.)*?)\\2)\\]|(?=(?:\\.|\\[\\])(?:\\.|\\[\\]|$))/g;\n\n  /**\n   * Used to match `RegExp`\n   * [syntax characters](http://ecma-international.org/ecma-262/7.0/#sec-patterns).\n   */\n  var reRegExpChar = /[\\\\^$.*+?()[\\]{}|]/g,\n      reHasRegExpChar = RegExp(reRegExpChar.source);\n\n  /** Used to match leading whitespace. */\n  var reTrimStart = /^\\s+/;\n\n  /** Used to match a single whitespace character. */\n  var reWhitespace = /\\s/;\n\n  /** Used to match wrap detail comments. */\n  var reWrapComment = /\\{(?:\\n\\/\\* \\[wrapped with .+\\] \\*\\/)?\\n?/,\n      reWrapDetails = /\\{\\n\\/\\* \\[wrapped with (.+)\\] \\*/,\n      reSplitDetails = /,? & /;\n\n  /** Used to match words composed of alphanumeric characters. */\n  var reAsciiWord = /[^\\x00-\\x2f\\x3a-\\x40\\x5b-\\x60\\x7b-\\x7f]+/g;\n\n  /**\n   * Used to validate the `validate` option in `_.template` variable.\n   *\n   * Forbids characters which could potentially change the meaning of the function argument definition:\n   * - \"(),\" (modification of function parameters)\n   * - \"=\" (default value)\n   * - \"[]{}\" (destructuring of function parameters)\n   * - \"/\" (beginning of a comment)\n   * - whitespace\n   */\n  var reForbiddenIdentifierChars = /[()=,{}\\[\\]\\/\\s]/;\n\n  /** Used to match backslashes in property paths. */\n  var reEscapeChar = /\\\\(\\\\)?/g;\n\n  /**\n   * Used to match\n   * [ES template delimiters](http://ecma-international.org/ecma-262/7.0/#sec-template-literal-lexical-components).\n   */\n  var reEsTemplate = /\\$\\{([^\\\\}]*(?:\\\\.[^\\\\}]*)*)\\}/g;\n\n  /** Used to match `RegExp` flags from their coerced string values. */\n  var reFlags = /\\w*$/;\n\n  /** Used to detect bad signed hexadecimal string values. */\n  var reIsBadHex = /^[-+]0x[0-9a-f]+$/i;\n\n  /** Used to detect binary string values. */\n  var reIsBinary = /^0b[01]+$/i;\n\n  /** Used to detect host constructors (Safari). */\n  var reIsHostCtor = /^\\[object .+?Constructor\\]$/;\n\n  /** Used to detect octal string values. */\n  var reIsOctal = /^0o[0-7]+$/i;\n\n  /** Used to detect unsigned integer values. */\n  var reIsUint = /^(?:0|[1-9]\\d*)$/;\n\n  /** Used to match Latin Unicode letters (excluding mathematical operators). */\n  var reLatin = /[\\xc0-\\xd6\\xd8-\\xf6\\xf8-\\xff\\u0100-\\u017f]/g;\n\n  /** Used to ensure capturing order of template delimiters. */\n  var reNoMatch = /($^)/;\n\n  /** Used to match unescaped characters in compiled string literals. */\n  var reUnescapedString = /['\\n\\r\\u2028\\u2029\\\\]/g;\n\n  /** Used to compose unicode character classes. */\n  var rsAstralRange = '\\\\ud800-\\\\udfff',\n      rsComboMarksRange = '\\\\u0300-\\\\u036f',\n      reComboHalfMarksRange = '\\\\ufe20-\\\\ufe2f',\n      rsComboSymbolsRange = '\\\\u20d0-\\\\u20ff',\n      rsComboRange = rsComboMarksRange + reComboHalfMarksRange + rsComboSymbolsRange,\n      rsDingbatRange = '\\\\u2700-\\\\u27bf',\n      rsLowerRange = 'a-z\\\\xdf-\\\\xf6\\\\xf8-\\\\xff',\n      rsMathOpRange = '\\\\xac\\\\xb1\\\\xd7\\\\xf7',\n      rsNonCharRange = '\\\\x00-\\\\x2f\\\\x3a-\\\\x40\\\\x5b-\\\\x60\\\\x7b-\\\\xbf',\n      rsPunctuationRange = '\\\\u2000-\\\\u206f',\n      rsSpaceRange = ' \\\\t\\\\x0b\\\\f\\\\xa0\\\\ufeff\\\\n\\\\r\\\\u2028\\\\u2029\\\\u1680\\\\u180e\\\\u2000\\\\u2001\\\\u2002\\\\u2003\\\\u2004\\\\u2005\\\\u2006\\\\u2007\\\\u2008\\\\u2009\\\\u200a\\\\u202f\\\\u205f\\\\u3000',\n      rsUpperRange = 'A-Z\\\\xc0-\\\\xd6\\\\xd8-\\\\xde',\n      rsVarRange = '\\\\ufe0e\\\\ufe0f',\n      rsBreakRange = rsMathOpRange + rsNonCharRange + rsPunctuationRange + rsSpaceRange;\n\n  /** Used to compose unicode capture groups. */\n  var rsApos = \"['\\u2019]\",\n      rsAstral = '[' + rsAstralRange + ']',\n      rsBreak = '[' + rsBreakRange + ']',\n      rsCombo = '[' + rsComboRange + ']',\n      rsDigits = '\\\\d+',\n      rsDingbat = '[' + rsDingbatRange + ']',\n      rsLower = '[' + rsLowerRange + ']',\n      rsMisc = '[^' + rsAstralRange + rsBreakRange + rsDigits + rsDingbatRange + rsLowerRange + rsUpperRange + ']',\n      rsFitz = '\\\\ud83c[\\\\udffb-\\\\udfff]',\n      rsModifier = '(?:' + rsCombo + '|' + rsFitz + ')',\n      rsNonAstral = '[^' + rsAstralRange + ']',\n      rsRegional = '(?:\\\\ud83c[\\\\udde6-\\\\uddff]){2}',\n      rsSurrPair = '[\\\\ud800-\\\\udbff][\\\\udc00-\\\\udfff]',\n      rsUpper = '[' + rsUpperRange + ']',\n      rsZWJ = '\\\\u200d';\n\n  /** Used to compose unicode regexes. */\n  var rsMiscLower = '(?:' + rsLower + '|' + rsMisc + ')',\n      rsMiscUpper = '(?:' + rsUpper + '|' + rsMisc + ')',\n      rsOptContrLower = '(?:' + rsApos + '(?:d|ll|m|re|s|t|ve))?',\n      rsOptContrUpper = '(?:' + rsApos + '(?:D|LL|M|RE|S|T|VE))?',\n      reOptMod = rsModifier + '?',\n      rsOptVar = '[' + rsVarRange + ']?',\n      rsOptJoin = '(?:' + rsZWJ + '(?:' + [rsNonAstral, rsRegional, rsSurrPair].join('|') + ')' + rsOptVar + reOptMod + ')*',\n      rsOrdLower = '\\\\d*(?:1st|2nd|3rd|(?![123])\\\\dth)(?=\\\\b|[A-Z_])',\n      rsOrdUpper = '\\\\d*(?:1ST|2ND|3RD|(?![123])\\\\dTH)(?=\\\\b|[a-z_])',\n      rsSeq = rsOptVar + reOptMod + rsOptJoin,\n      rsEmoji = '(?:' + [rsDingbat, rsRegional, rsSurrPair].join('|') + ')' + rsSeq,\n      rsSymbol = '(?:' + [rsNonAstral + rsCombo + '?', rsCombo, rsRegional, rsSurrPair, rsAstral].join('|') + ')';\n\n  /** Used to match apostrophes. */\n  var reApos = RegExp(rsApos, 'g');\n\n  /**\n   * Used to match [combining diacritical marks](https://en.wikipedia.org/wiki/Combining_Diacritical_Marks) and\n   * [combining diacritical marks for symbols](https://en.wikipedia.org/wiki/Combining_Diacritical_Marks_for_Symbols).\n   */\n  var reComboMark = RegExp(rsCombo, 'g');\n\n  /** Used to match [string symbols](https://mathiasbynens.be/notes/javascript-unicode). */\n  var reUnicode = RegExp(rsFitz + '(?=' + rsFitz + ')|' + rsSymbol + rsSeq, 'g');\n\n  /** Used to match complex or compound words. */\n  var reUnicodeWord = RegExp([\n    rsUpper + '?' + rsLower + '+' + rsOptContrLower + '(?=' + [rsBreak, rsUpper, '$'].join('|') + ')',\n    rsMiscUpper + '+' + rsOptContrUpper + '(?=' + [rsBreak, rsUpper + rsMiscLower, '$'].join('|') + ')',\n    rsUpper + '?' + rsMiscLower + '+' + rsOptContrLower,\n    rsUpper + '+' + rsOptContrUpper,\n    rsOrdUpper,\n    rsOrdLower,\n    rsDigits,\n    rsEmoji\n  ].join('|'), 'g');\n\n  /** Used to detect strings with [zero-width joiners or code points from the astral planes](http://eev.ee/blog/2015/09/12/dark-corners-of-unicode/). */\n  var reHasUnicode = RegExp('[' + rsZWJ + rsAstralRange  + rsComboRange + rsVarRange + ']');\n\n  /** Used to detect strings that need a more robust regexp to match words. */\n  var reHasUnicodeWord = /[a-z][A-Z]|[A-Z]{2}[a-z]|[0-9][a-zA-Z]|[a-zA-Z][0-9]|[^a-zA-Z0-9 ]/;\n\n  /** Used to assign default `context` object properties. */\n  var contextProps = [\n    'Array', 'Buffer', 'DataView', 'Date', 'Error', 'Float32Array', 'Float64Array',\n    'Function', 'Int8Array', 'Int16Array', 'Int32Array', 'Map', 'Math', 'Object',\n    'Promise', 'RegExp', 'Set', 'String', 'Symbol', 'TypeError', 'Uint8Array',\n    'Uint8ClampedArray', 'Uint16Array', 'Uint32Array', 'WeakMap',\n    '_', 'clearTimeout', 'isFinite', 'parseInt', 'setTimeout'\n  ];\n\n  /** Used to make template sourceURLs easier to identify. */\n  var templateCounter = -1;\n\n  /** Used to identify `toStringTag` values of typed arrays. */\n  var typedArrayTags = {};\n  typedArrayTags[float32Tag] = typedArrayTags[float64Tag] =\n  typedArrayTags[int8Tag] = typedArrayTags[int16Tag] =\n  typedArrayTags[int32Tag] = typedArrayTags[uint8Tag] =\n  typedArrayTags[uint8ClampedTag] = typedArrayTags[uint16Tag] =\n  typedArrayTags[uint32Tag] = true;\n  typedArrayTags[argsTag] = typedArrayTags[arrayTag] =\n  typedArrayTags[arrayBufferTag] = typedArrayTags[boolTag] =\n  typedArrayTags[dataViewTag] = typedArrayTags[dateTag] =\n  typedArrayTags[errorTag] = typedArrayTags[funcTag] =\n  typedArrayTags[mapTag] = typedArrayTags[numberTag] =\n  typedArrayTags[objectTag] = typedArrayTags[regexpTag] =\n  typedArrayTags[setTag] = typedArrayTags[stringTag] =\n  typedArrayTags[weakMapTag] = false;\n\n  /** Used to identify `toStringTag` values supported by `_.clone`. */\n  var cloneableTags = {};\n  cloneableTags[argsTag] = cloneableTags[arrayTag] =\n  cloneableTags[arrayBufferTag] = cloneableTags[dataViewTag] =\n  cloneableTags[boolTag] = cloneableTags[dateTag] =\n  cloneableTags[float32Tag] = cloneableTags[float64Tag] =\n  cloneableTags[int8Tag] = cloneableTags[int16Tag] =\n  cloneableTags[int32Tag] = cloneableTags[mapTag] =\n  cloneableTags[numberTag] = cloneableTags[objectTag] =\n  cloneableTags[regexpTag] = cloneableTags[setTag] =\n  cloneableTags[stringTag] = cloneableTags[symbolTag] =\n  cloneableTags[uint8Tag] = cloneableTags[uint8ClampedTag] =\n  cloneableTags[uint16Tag] = cloneableTags[uint32Tag] = true;\n  cloneableTags[errorTag] = cloneableTags[funcTag] =\n  cloneableTags[weakMapTag] = false;\n\n  /** Used to map Latin Unicode letters to basic Latin letters. */\n  var deburredLetters = {\n    // Latin-1 Supplement block.\n    '\\xc0': 'A',  '\\xc1': 'A', '\\xc2': 'A', '\\xc3': 'A', '\\xc4': 'A', '\\xc5': 'A',\n    '\\xe0': 'a',  '\\xe1': 'a', '\\xe2': 'a', '\\xe3': 'a', '\\xe4': 'a', '\\xe5': 'a',\n    '\\xc7': 'C',  '\\xe7': 'c',\n    '\\xd0': 'D',  '\\xf0': 'd',\n    '\\xc8': 'E',  '\\xc9': 'E', '\\xca': 'E', '\\xcb': 'E',\n    '\\xe8': 'e',  '\\xe9': 'e', '\\xea': 'e', '\\xeb': 'e',\n    '\\xcc': 'I',  '\\xcd': 'I', '\\xce': 'I', '\\xcf': 'I',\n    '\\xec': 'i',  '\\xed': 'i', '\\xee': 'i', '\\xef': 'i',\n    '\\xd1': 'N',  '\\xf1': 'n',\n    '\\xd2': 'O',  '\\xd3': 'O', '\\xd4': 'O', '\\xd5': 'O', '\\xd6': 'O', '\\xd8': 'O',\n    '\\xf2': 'o',  '\\xf3': 'o', '\\xf4': 'o', '\\xf5': 'o', '\\xf6': 'o', '\\xf8': 'o',\n    '\\xd9': 'U',  '\\xda': 'U', '\\xdb': 'U', '\\xdc': 'U',\n    '\\xf9': 'u',  '\\xfa': 'u', '\\xfb': 'u', '\\xfc': 'u',\n    '\\xdd': 'Y',  '\\xfd': 'y', '\\xff': 'y',\n    '\\xc6': 'Ae', '\\xe6': 'ae',\n    '\\xde': 'Th', '\\xfe': 'th',\n    '\\xdf': 'ss',\n    // Latin Extended-A block.\n    '\\u0100': 'A',  '\\u0102': 'A', '\\u0104': 'A',\n    '\\u0101': 'a',  '\\u0103': 'a', '\\u0105': 'a',\n    '\\u0106': 'C',  '\\u0108': 'C', '\\u010a': 'C', '\\u010c': 'C',\n    '\\u0107': 'c',  '\\u0109': 'c', '\\u010b': 'c', '\\u010d': 'c',\n    '\\u010e': 'D',  '\\u0110': 'D', '\\u010f': 'd', '\\u0111': 'd',\n    '\\u0112': 'E',  '\\u0114': 'E', '\\u0116': 'E', '\\u0118': 'E', '\\u011a': 'E',\n    '\\u0113': 'e',  '\\u0115': 'e', '\\u0117': 'e', '\\u0119': 'e', '\\u011b': 'e',\n    '\\u011c': 'G',  '\\u011e': 'G', '\\u0120': 'G', '\\u0122': 'G',\n    '\\u011d': 'g',  '\\u011f': 'g', '\\u0121': 'g', '\\u0123': 'g',\n    '\\u0124': 'H',  '\\u0126': 'H', '\\u0125': 'h', '\\u0127': 'h',\n    '\\u0128': 'I',  '\\u012a': 'I', '\\u012c': 'I', '\\u012e': 'I', '\\u0130': 'I',\n    '\\u0129': 'i',  '\\u012b': 'i', '\\u012d': 'i', '\\u012f': 'i', '\\u0131': 'i',\n    '\\u0134': 'J',  '\\u0135': 'j',\n    '\\u0136': 'K',  '\\u0137': 'k', '\\u0138': 'k',\n    '\\u0139': 'L',  '\\u013b': 'L', '\\u013d': 'L', '\\u013f': 'L', '\\u0141': 'L',\n    '\\u013a': 'l',  '\\u013c': 'l', '\\u013e': 'l', '\\u0140': 'l', '\\u0142': 'l',\n    '\\u0143': 'N',  '\\u0145': 'N', '\\u0147': 'N', '\\u014a': 'N',\n    '\\u0144': 'n',  '\\u0146': 'n', '\\u0148': 'n', '\\u014b': 'n',\n    '\\u014c': 'O',  '\\u014e': 'O', '\\u0150': 'O',\n    '\\u014d': 'o',  '\\u014f': 'o', '\\u0151': 'o',\n    '\\u0154': 'R',  '\\u0156': 'R', '\\u0158': 'R',\n    '\\u0155': 'r',  '\\u0157': 'r', '\\u0159': 'r',\n    '\\u015a': 'S',  '\\u015c': 'S', '\\u015e': 'S', '\\u0160': 'S',\n    '\\u015b': 's',  '\\u015d': 's', '\\u015f': 's', '\\u0161': 's',\n    '\\u0162': 'T',  '\\u0164': 'T', '\\u0166': 'T',\n    '\\u0163': 't',  '\\u0165': 't', '\\u0167': 't',\n    '\\u0168': 'U',  '\\u016a': 'U', '\\u016c': 'U', '\\u016e': 'U', '\\u0170': 'U', '\\u0172': 'U',\n    '\\u0169': 'u',  '\\u016b': 'u', '\\u016d': 'u', '\\u016f': 'u', '\\u0171': 'u', '\\u0173': 'u',\n    '\\u0174': 'W',  '\\u0175': 'w',\n    '\\u0176': 'Y',  '\\u0177': 'y', '\\u0178': 'Y',\n    '\\u0179': 'Z',  '\\u017b': 'Z', '\\u017d': 'Z',\n    '\\u017a': 'z',  '\\u017c': 'z', '\\u017e': 'z',\n    '\\u0132': 'IJ', '\\u0133': 'ij',\n    '\\u0152': 'Oe', '\\u0153': 'oe',\n    '\\u0149': \"'n\", '\\u017f': 's'\n  };\n\n  /** Used to map characters to HTML entities. */\n  var htmlEscapes = {\n    '&': '&amp;',\n    '<': '&lt;',\n    '>': '&gt;',\n    '\"': '&quot;',\n    \"'\": '&#39;'\n  };\n\n  /** Used to map HTML entities to characters. */\n  var htmlUnescapes = {\n    '&amp;': '&',\n    '&lt;': '<',\n    '&gt;': '>',\n    '&quot;': '\"',\n    '&#39;': \"'\"\n  };\n\n  /** Used to escape characters for inclusion in compiled string literals. */\n  var stringEscapes = {\n    '\\\\': '\\\\',\n    \"'\": \"'\",\n    '\\n': 'n',\n    '\\r': 'r',\n    '\\u2028': 'u2028',\n    '\\u2029': 'u2029'\n  };\n\n  /** Built-in method references without a dependency on `root`. */\n  var freeParseFloat = parseFloat,\n      freeParseInt = parseInt;\n\n  /** Detect free variable `global` from Node.js. */\n  var freeGlobal = typeof global == 'object' && global && global.Object === Object && global;\n\n  /** Detect free variable `self`. */\n  var freeSelf = typeof self == 'object' && self && self.Object === Object && self;\n\n  /** Used as a reference to the global object. */\n  var root = freeGlobal || freeSelf || Function('return this')();\n\n  /** Detect free variable `exports`. */\n  var freeExports = typeof exports == 'object' && exports && !exports.nodeType && exports;\n\n  /** Detect free variable `module`. */\n  var freeModule = freeExports && typeof module == 'object' && module && !module.nodeType && module;\n\n  /** Detect the popular CommonJS extension `module.exports`. */\n  var moduleExports = freeModule && freeModule.exports === freeExports;\n\n  /** Detect free variable `process` from Node.js. */\n  var freeProcess = moduleExports && freeGlobal.process;\n\n  /** Used to access faster Node.js helpers. */\n  var nodeUtil = (function() {\n    try {\n      // Use `util.types` for Node.js 10+.\n      var types = freeModule && freeModule.require && freeModule.require('util').types;\n\n      if (types) {\n        return types;\n      }\n\n      // Legacy `process.binding('util')` for Node.js < 10.\n      return freeProcess && freeProcess.binding && freeProcess.binding('util');\n    } catch (e) {}\n  }());\n\n  /* Node.js helper references. */\n  var nodeIsArrayBuffer = nodeUtil && nodeUtil.isArrayBuffer,\n      nodeIsDate = nodeUtil && nodeUtil.isDate,\n      nodeIsMap = nodeUtil && nodeUtil.isMap,\n      nodeIsRegExp = nodeUtil && nodeUtil.isRegExp,\n      nodeIsSet = nodeUtil && nodeUtil.isSet,\n      nodeIsTypedArray = nodeUtil && nodeUtil.isTypedArray;\n\n  /*--------------------------------------------------------------------------*/\n\n  /**\n   * A faster alternative to `Function#apply`, this function invokes `func`\n   * with the `this` binding of `thisArg` and the arguments of `args`.\n   *\n   * @private\n   * @param {Function} func The function to invoke.\n   * @param {*} thisArg The `this` binding of `func`.\n   * @param {Array} args The arguments to invoke `func` with.\n   * @returns {*} Returns the result of `func`.\n   */\n  function apply(func, thisArg, args) {\n    switch (args.length) {\n      case 0: return func.call(thisArg);\n      case 1: return func.call(thisArg, args[0]);\n      case 2: return func.call(thisArg, args[0], args[1]);\n      case 3: return func.call(thisArg, args[0], args[1], args[2]);\n    }\n    return func.apply(thisArg, args);\n  }\n\n  /**\n   * A specialized version of `baseAggregator` for arrays.\n   *\n   * @private\n   * @param {Array} [array] The array to iterate over.\n   * @param {Function} setter The function to set `accumulator` values.\n   * @param {Function} iteratee The iteratee to transform keys.\n   * @param {Object} accumulator The initial aggregated object.\n   * @returns {Function} Returns `accumulator`.\n   */\n  function arrayAggregator(array, setter, iteratee, accumulator) {\n    var index = -1,\n        length = array == null ? 0 : array.length;\n\n    while (++index < length) {\n      var value = array[index];\n      setter(accumulator, value, iteratee(value), array);\n    }\n    return accumulator;\n  }\n\n  /**\n   * A specialized version of `_.forEach` for arrays without support for\n   * iteratee shorthands.\n   *\n   * @private\n   * @param {Array} [array] The array to iterate over.\n   * @param {Function} iteratee The function invoked per iteration.\n   * @returns {Array} Returns `array`.\n   */\n  function arrayEach(array, iteratee) {\n    var index = -1,\n        length = array == null ? 0 : array.length;\n\n    while (++index < length) {\n      if (iteratee(array[index], index, array) === false) {\n        break;\n      }\n    }\n    return array;\n  }\n\n  /**\n   * A specialized version of `_.forEachRight` for arrays without support for\n   * iteratee shorthands.\n   *\n   * @private\n   * @param {Array} [array] The array to iterate over.\n   * @param {Function} iteratee The function invoked per iteration.\n   * @returns {Array} Returns `array`.\n   */\n  function arrayEachRight(array, iteratee) {\n    var length = array == null ? 0 : array.length;\n\n    while (length--) {\n      if (iteratee(array[length], length, array) === false) {\n        break;\n      }\n    }\n    return array;\n  }\n\n  /**\n   * A specialized version of `_.every` for arrays without support for\n   * iteratee shorthands.\n   *\n   * @private\n   * @param {Array} [array] The array to iterate over.\n   * @param {Function} predicate The function invoked per iteration.\n   * @returns {boolean} Returns `true` if all elements pass the predicate check,\n   *  else `false`.\n   */\n  function arrayEvery(array, predicate) {\n    var index = -1,\n        length = array == null ? 0 : array.length;\n\n    while (++index < length) {\n      if (!predicate(array[index], index, array)) {\n        return false;\n      }\n    }\n    return true;\n  }\n\n  /**\n   * A specialized version of `_.filter` for arrays without support for\n   * iteratee shorthands.\n   *\n   * @private\n   * @param {Array} [array] The array to iterate over.\n   * @param {Function} predicate The function invoked per iteration.\n   * @returns {Array} Returns the new filtered array.\n   */\n  function arrayFilter(array, predicate) {\n    var index = -1,\n        length = array == null ? 0 : array.length,\n        resIndex = 0,\n        result = [];\n\n    while (++index < length) {\n      var value = array[index];\n      if (predicate(value, index, array)) {\n        result[resIndex++] = value;\n      }\n    }\n    return result;\n  }\n\n  /**\n   * A specialized version of `_.includes` for arrays without support for\n   * specifying an index to search from.\n   *\n   * @private\n   * @param {Array} [array] The array to inspect.\n   * @param {*} target The value to search for.\n   * @returns {boolean} Returns `true` if `target` is found, else `false`.\n   */\n  function arrayIncludes(array, value) {\n    var length = array == null ? 0 : array.length;\n    return !!length && baseIndexOf(array, value, 0) > -1;\n  }\n\n  /**\n   * This function is like `arrayIncludes` except that it accepts a comparator.\n   *\n   * @private\n   * @param {Array} [array] The array to inspect.\n   * @param {*} target The value to search for.\n   * @param {Function} comparator The comparator invoked per element.\n   * @returns {boolean} Returns `true` if `target` is found, else `false`.\n   */\n  function arrayIncludesWith(array, value, comparator) {\n    var index = -1,\n        length = array == null ? 0 : array.length;\n\n    while (++index < length) {\n      if (comparator(value, array[index])) {\n        return true;\n      }\n    }\n    return false;\n  }\n\n  /**\n   * A specialized version of `_.map` for arrays without support for iteratee\n   * shorthands.\n   *\n   * @private\n   * @param {Array} [array] The array to iterate over.\n   * @param {Function} iteratee The function invoked per iteration.\n   * @returns {Array} Returns the new mapped array.\n   */\n  function arrayMap(array, iteratee) {\n    var index = -1,\n        length = array == null ? 0 : array.length,\n        result = Array(length);\n\n    while (++index < length) {\n      result[index] = iteratee(array[index], index, array);\n    }\n    return result;\n  }\n\n  /**\n   * Appends the elements of `values` to `array`.\n   *\n   * @private\n   * @param {Array} array The array to modify.\n   * @param {Array} values The values to append.\n   * @returns {Array} Returns `array`.\n   */\n  function arrayPush(array, values) {\n    var index = -1,\n        length = values.length,\n        offset = array.length;\n\n    while (++index < length) {\n      array[offset + index] = values[index];\n    }\n    return array;\n  }\n\n  /**\n   * A specialized version of `_.reduce` for arrays without support for\n   * iteratee shorthands.\n   *\n   * @private\n   * @param {Array} [array] The array to iterate over.\n   * @param {Function} iteratee The function invoked per iteration.\n   * @param {*} [accumulator] The initial value.\n   * @param {boolean} [initAccum] Specify using the first element of `array` as\n   *  the initial value.\n   * @returns {*} Returns the accumulated value.\n   */\n  function arrayReduce(array, iteratee, accumulator, initAccum) {\n    var index = -1,\n        length = array == null ? 0 : array.length;\n\n    if (initAccum && length) {\n      accumulator = array[++index];\n    }\n    while (++index < length) {\n      accumulator = iteratee(accumulator, array[index], index, array);\n    }\n    return accumulator;\n  }\n\n  /**\n   * A specialized version of `_.reduceRight` for arrays without support for\n   * iteratee shorthands.\n   *\n   * @private\n   * @param {Array} [array] The array to iterate over.\n   * @param {Function} iteratee The function invoked per iteration.\n   * @param {*} [accumulator] The initial value.\n   * @param {boolean} [initAccum] Specify using the last element of `array` as\n   *  the initial value.\n   * @returns {*} Returns the accumulated value.\n   */\n  function arrayReduceRight(array, iteratee, accumulator, initAccum) {\n    var length = array == null ? 0 : array.length;\n    if (initAccum && length) {\n      accumulator = array[--length];\n    }\n    while (length--) {\n      accumulator = iteratee(accumulator, array[length], length, array);\n    }\n    return accumulator;\n  }\n\n  /**\n   * A specialized version of `_.some` for arrays without support for iteratee\n   * shorthands.\n   *\n   * @private\n   * @param {Array} [array] The array to iterate over.\n   * @param {Function} predicate The function invoked per iteration.\n   * @returns {boolean} Returns `true` if any element passes the predicate check,\n   *  else `false`.\n   */\n  function arraySome(array, predicate) {\n    var index = -1,\n        length = array == null ? 0 : array.length;\n\n    while (++index < length) {\n      if (predicate(array[index], index, array)) {\n        return true;\n      }\n    }\n    return false;\n  }\n\n  /**\n   * Gets the size of an ASCII `string`.\n   *\n   * @private\n   * @param {string} string The string inspect.\n   * @returns {number} Returns the string size.\n   */\n  var asciiSize = baseProperty('length');\n\n  /**\n   * Converts an ASCII `string` to an array.\n   *\n   * @private\n   * @param {string} string The string to convert.\n   * @returns {Array} Returns the converted array.\n   */\n  function asciiToArray(string) {\n    return string.split('');\n  }\n\n  /**\n   * Splits an ASCII `string` into an array of its words.\n   *\n   * @private\n   * @param {string} The string to inspect.\n   * @returns {Array} Returns the words of `string`.\n   */\n  function asciiWords(string) {\n    return string.match(reAsciiWord) || [];\n  }\n\n  /**\n   * The base implementation of methods like `_.findKey` and `_.findLastKey`,\n   * without support for iteratee shorthands, which iterates over `collection`\n   * using `eachFunc`.\n   *\n   * @private\n   * @param {Array|Object} collection The collection to inspect.\n   * @param {Function} predicate The function invoked per iteration.\n   * @param {Function} eachFunc The function to iterate over `collection`.\n   * @returns {*} Returns the found element or its key, else `undefined`.\n   */\n  function baseFindKey(collection, predicate, eachFunc) {\n    var result;\n    eachFunc(collection, function(value, key, collection) {\n      if (predicate(value, key, collection)) {\n        result = key;\n        return false;\n      }\n    });\n    return result;\n  }\n\n  /**\n   * The base implementation of `_.findIndex` and `_.findLastIndex` without\n   * support for iteratee shorthands.\n   *\n   * @private\n   * @param {Array} array The array to inspect.\n   * @param {Function} predicate The function invoked per iteration.\n   * @param {number} fromIndex The index to search from.\n   * @param {boolean} [fromRight] Specify iterating from right to left.\n   * @returns {number} Returns the index of the matched value, else `-1`.\n   */\n  function baseFindIndex(array, predicate, fromIndex, fromRight) {\n    var length = array.length,\n        index = fromIndex + (fromRight ? 1 : -1);\n\n    while ((fromRight ? index-- : ++index < length)) {\n      if (predicate(array[index], index, array)) {\n        return index;\n      }\n    }\n    return -1;\n  }\n\n  /**\n   * The base implementation of `_.indexOf` without `fromIndex` bounds checks.\n   *\n   * @private\n   * @param {Array} array The array to inspect.\n   * @param {*} value The value to search for.\n   * @param {number} fromIndex The index to search from.\n   * @returns {number} Returns the index of the matched value, else `-1`.\n   */\n  function baseIndexOf(array, value, fromIndex) {\n    return value === value\n      ? strictIndexOf(array, value, fromIndex)\n      : baseFindIndex(array, baseIsNaN, fromIndex);\n  }\n\n  /**\n   * This function is like `baseIndexOf` except that it accepts a comparator.\n   *\n   * @private\n   * @param {Array} array The array to inspect.\n   * @param {*} value The value to search for.\n   * @param {number} fromIndex The index to search from.\n   * @param {Function} comparator The comparator invoked per element.\n   * @returns {number} Returns the index of the matched value, else `-1`.\n   */\n  function baseIndexOfWith(array, value, fromIndex, comparator) {\n    var index = fromIndex - 1,\n        length = array.length;\n\n    while (++index < length) {\n      if (comparator(array[index], value)) {\n        return index;\n      }\n    }\n    return -1;\n  }\n\n  /**\n   * The base implementation of `_.isNaN` without support for number objects.\n   *\n   * @private\n   * @param {*} value The value to check.\n   * @returns {boolean} Returns `true` if `value` is `NaN`, else `false`.\n   */\n  function baseIsNaN(value) {\n    return value !== value;\n  }\n\n  /**\n   * The base implementation of `_.mean` and `_.meanBy` without support for\n   * iteratee shorthands.\n   *\n   * @private\n   * @param {Array} array The array to iterate over.\n   * @param {Function} iteratee The function invoked per iteration.\n   * @returns {number} Returns the mean.\n   */\n  function baseMean(array, iteratee) {\n    var length = array == null ? 0 : array.length;\n    return length ? (baseSum(array, iteratee) / length) : NAN;\n  }\n\n  /**\n   * The base implementation of `_.property` without support for deep paths.\n   *\n   * @private\n   * @param {string} key The key of the property to get.\n   * @returns {Function} Returns the new accessor function.\n   */\n  function baseProperty(key) {\n    return function(object) {\n      return object == null ? undefined : object[key];\n    };\n  }\n\n  /**\n   * The base implementation of `_.propertyOf` without support for deep paths.\n   *\n   * @private\n   * @param {Object} object The object to query.\n   * @returns {Function} Returns the new accessor function.\n   */\n  function basePropertyOf(object) {\n    return function(key) {\n      return object == null ? undefined : object[key];\n    };\n  }\n\n  /**\n   * The base implementation of `_.reduce` and `_.reduceRight`, without support\n   * for iteratee shorthands, which iterates over `collection` using `eachFunc`.\n   *\n   * @private\n   * @param {Array|Object} collection The collection to iterate over.\n   * @param {Function} iteratee The function invoked per iteration.\n   * @param {*} accumulator The initial value.\n   * @param {boolean} initAccum Specify using the first or last element of\n   *  `collection` as the initial value.\n   * @param {Function} eachFunc The function to iterate over `collection`.\n   * @returns {*} Returns the accumulated value.\n   */\n  function baseReduce(collection, iteratee, accumulator, initAccum, eachFunc) {\n    eachFunc(collection, function(value, index, collection) {\n      accumulator = initAccum\n        ? (initAccum = false, value)\n        : iteratee(accumulator, value, index, collection);\n    });\n    return accumulator;\n  }\n\n  /**\n   * The base implementation of `_.sortBy` which uses `comparer` to define the\n   * sort order of `array` and replaces criteria objects with their corresponding\n   * values.\n   *\n   * @private\n   * @param {Array} array The array to sort.\n   * @param {Function} comparer The function to define sort order.\n   * @returns {Array} Returns `array`.\n   */\n  function baseSortBy(array, comparer) {\n    var length = array.length;\n\n    array.sort(comparer);\n    while (length--) {\n      array[length] = array[length].value;\n    }\n    return array;\n  }\n\n  /**\n   * The base implementation of `_.sum` and `_.sumBy` without support for\n   * iteratee shorthands.\n   *\n   * @private\n   * @param {Array} array The array to iterate over.\n   * @param {Function} iteratee The function invoked per iteration.\n   * @returns {number} Returns the sum.\n   */\n  function baseSum(array, iteratee) {\n    var result,\n        index = -1,\n        length = array.length;\n\n    while (++index < length) {\n      var current = iteratee(array[index]);\n      if (current !== undefined) {\n        result = result === undefined ? current : (result + current);\n      }\n    }\n    return result;\n  }\n\n  /**\n   * The base implementation of `_.times` without support for iteratee shorthands\n   * or max array length checks.\n   *\n   * @private\n   * @param {number} n The number of times to invoke `iteratee`.\n   * @param {Function} iteratee The function invoked per iteration.\n   * @returns {Array} Returns the array of results.\n   */\n  function baseTimes(n, iteratee) {\n    var index = -1,\n        result = Array(n);\n\n    while (++index < n) {\n      result[index] = iteratee(index);\n    }\n    return result;\n  }\n\n  /**\n   * The base implementation of `_.toPairs` and `_.toPairsIn` which creates an array\n   * of key-value pairs for `object` corresponding to the property names of `props`.\n   *\n   * @private\n   * @param {Object} object The object to query.\n   * @param {Array} props The property names to get values for.\n   * @returns {Object} Returns the key-value pairs.\n   */\n  function baseToPairs(object, props) {\n    return arrayMap(props, function(key) {\n      return [key, object[key]];\n    });\n  }\n\n  /**\n   * The base implementation of `_.trim`.\n   *\n   * @private\n   * @param {string} string The string to trim.\n   * @returns {string} Returns the trimmed string.\n   */\n  function baseTrim(string) {\n    return string\n      ? string.slice(0, trimmedEndIndex(string) + 1).replace(reTrimStart, '')\n      : string;\n  }\n\n  /**\n   * The base implementation of `_.unary` without support for storing metadata.\n   *\n   * @private\n   * @param {Function} func The function to cap arguments for.\n   * @returns {Function} Returns the new capped function.\n   */\n  function baseUnary(func) {\n    return function(value) {\n      return func(value);\n    };\n  }\n\n  /**\n   * The base implementation of `_.values` and `_.valuesIn` which creates an\n   * array of `object` property values corresponding to the property names\n   * of `props`.\n   *\n   * @private\n   * @param {Object} object The object to query.\n   * @param {Array} props The property names to get values for.\n   * @returns {Object} Returns the array of property values.\n   */\n  function baseValues(object, props) {\n    return arrayMap(props, function(key) {\n      return object[key];\n    });\n  }\n\n  /**\n   * Checks if a `cache` value for `key` exists.\n   *\n   * @private\n   * @param {Object} cache The cache to query.\n   * @param {string} key The key of the entry to check.\n   * @returns {boolean} Returns `true` if an entry for `key` exists, else `false`.\n   */\n  function cacheHas(cache, key) {\n    return cache.has(key);\n  }\n\n  /**\n   * Used by `_.trim` and `_.trimStart` to get the index of the first string symbol\n   * that is not found in the character symbols.\n   *\n   * @private\n   * @param {Array} strSymbols The string symbols to inspect.\n   * @param {Array} chrSymbols The character symbols to find.\n   * @returns {number} Returns the index of the first unmatched string symbol.\n   */\n  function charsStartIndex(strSymbols, chrSymbols) {\n    var index = -1,\n        length = strSymbols.length;\n\n    while (++index < length && baseIndexOf(chrSymbols, strSymbols[index], 0) > -1) {}\n    return index;\n  }\n\n  /**\n   * Used by `_.trim` and `_.trimEnd` to get the index of the last string symbol\n   * that is not found in the character symbols.\n   *\n   * @private\n   * @param {Array} strSymbols The string symbols to inspect.\n   * @param {Array} chrSymbols The character symbols to find.\n   * @returns {number} Returns the index of the last unmatched string symbol.\n   */\n  function charsEndIndex(strSymbols, chrSymbols) {\n    var index = strSymbols.length;\n\n    while (index-- && baseIndexOf(chrSymbols, strSymbols[index], 0) > -1) {}\n    return index;\n  }\n\n  /**\n   * Gets the number of `placeholder` occurrences in `array`.\n   *\n   * @private\n   * @param {Array} array The array to inspect.\n   * @param {*} placeholder The placeholder to search for.\n   * @returns {number} Returns the placeholder count.\n   */\n  function countHolders(array, placeholder) {\n    var length = array.length,\n        result = 0;\n\n    while (length--) {\n      if (array[length] === placeholder) {\n        ++result;\n      }\n    }\n    return result;\n  }\n\n  /**\n   * Used by `_.deburr` to convert Latin-1 Supplement and Latin Extended-A\n   * letters to basic Latin letters.\n   *\n   * @private\n   * @param {string} letter The matched letter to deburr.\n   * @returns {string} Returns the deburred letter.\n   */\n  var deburrLetter = basePropertyOf(deburredLetters);\n\n  /**\n   * Used by `_.escape` to convert characters to HTML entities.\n   *\n   * @private\n   * @param {string} chr The matched character to escape.\n   * @returns {string} Returns the escaped character.\n   */\n  var escapeHtmlChar = basePropertyOf(htmlEscapes);\n\n  /**\n   * Used by `_.template` to escape characters for inclusion in compiled string literals.\n   *\n   * @private\n   * @param {string} chr The matched character to escape.\n   * @returns {string} Returns the escaped character.\n   */\n  function escapeStringChar(chr) {\n    return '\\\\' + stringEscapes[chr];\n  }\n\n  /**\n   * Gets the value at `key` of `object`.\n   *\n   * @private\n   * @param {Object} [object] The object to query.\n   * @param {string} key The key of the property to get.\n   * @returns {*} Returns the property value.\n   */\n  function getValue(object, key) {\n    return object == null ? undefined : object[key];\n  }\n\n  /**\n   * Checks if `string` contains Unicode symbols.\n   *\n   * @private\n   * @param {string} string The string to inspect.\n   * @returns {boolean} Returns `true` if a symbol is found, else `false`.\n   */\n  function hasUnicode(string) {\n    return reHasUnicode.test(string);\n  }\n\n  /**\n   * Checks if `string` contains a word composed of Unicode symbols.\n   *\n   * @private\n   * @param {string} string The string to inspect.\n   * @returns {boolean} Returns `true` if a word is found, else `false`.\n   */\n  function hasUnicodeWord(string) {\n    return reHasUnicodeWord.test(string);\n  }\n\n  /**\n   * Converts `iterator` to an array.\n   *\n   * @private\n   * @param {Object} iterator The iterator to convert.\n   * @returns {Array} Returns the converted array.\n   */\n  function iteratorToArray(iterator) {\n    var data,\n        result = [];\n\n    while (!(data = iterator.next()).done) {\n      result.push(data.value);\n    }\n    return result;\n  }\n\n  /**\n   * Converts `map` to its key-value pairs.\n   *\n   * @private\n   * @param {Object} map The map to convert.\n   * @returns {Array} Returns the key-value pairs.\n   */\n  function mapToArray(map) {\n    var index = -1,\n        result = Array(map.size);\n\n    map.forEach(function(value, key) {\n      result[++index] = [key, value];\n    });\n    return result;\n  }\n\n  /**\n   * Creates a unary function that invokes `func` with its argument transformed.\n   *\n   * @private\n   * @param {Function} func The function to wrap.\n   * @param {Function} transform The argument transform.\n   * @returns {Function} Returns the new function.\n   */\n  function overArg(func, transform) {\n    return function(arg) {\n      return func(transform(arg));\n    };\n  }\n\n  /**\n   * Replaces all `placeholder` elements in `array` with an internal placeholder\n   * and returns an array of their indexes.\n   *\n   * @private\n   * @param {Array} array The array to modify.\n   * @param {*} placeholder The placeholder to replace.\n   * @returns {Array} Returns the new array of placeholder indexes.\n   */\n  function replaceHolders(array, placeholder) {\n    var index = -1,\n        length = array.length,\n        resIndex = 0,\n        result = [];\n\n    while (++index < length) {\n      var value = array[index];\n      if (value === placeholder || value === PLACEHOLDER) {\n        array[index] = PLACEHOLDER;\n        result[resIndex++] = index;\n      }\n    }\n    return result;\n  }\n\n  /**\n   * Converts `set` to an array of its values.\n   *\n   * @private\n   * @param {Object} set The set to convert.\n   * @returns {Array} Returns the values.\n   */\n  function setToArray(set) {\n    var index = -1,\n        result = Array(set.size);\n\n    set.forEach(function(value) {\n      result[++index] = value;\n    });\n    return result;\n  }\n\n  /**\n   * Converts `set` to its value-value pairs.\n   *\n   * @private\n   * @param {Object} set The set to convert.\n   * @returns {Array} Returns the value-value pairs.\n   */\n  function setToPairs(set) {\n    var index = -1,\n        result = Array(set.size);\n\n    set.forEach(function(value) {\n      result[++index] = [value, value];\n    });\n    return result;\n  }\n\n  /**\n   * A specialized version of `_.indexOf` which performs strict equality\n   * comparisons of values, i.e. `===`.\n   *\n   * @private\n   * @param {Array} array The array to inspect.\n   * @param {*} value The value to search for.\n   * @param {number} fromIndex The index to search from.\n   * @returns {number} Returns the index of the matched value, else `-1`.\n   */\n  function strictIndexOf(array, value, fromIndex) {\n    var index = fromIndex - 1,\n        length = array.length;\n\n    while (++index < length) {\n      if (array[index] === value) {\n        return index;\n      }\n    }\n    return -1;\n  }\n\n  /**\n   * A specialized version of `_.lastIndexOf` which performs strict equality\n   * comparisons of values, i.e. `===`.\n   *\n   * @private\n   * @param {Array} array The array to inspect.\n   * @param {*} value The value to search for.\n   * @param {number} fromIndex The index to search from.\n   * @returns {number} Returns the index of the matched value, else `-1`.\n   */\n  function strictLastIndexOf(array, value, fromIndex) {\n    var index = fromIndex + 1;\n    while (index--) {\n      if (array[index] === value) {\n        return index;\n      }\n    }\n    return index;\n  }\n\n  /**\n   * Gets the number of symbols in `string`.\n   *\n   * @private\n   * @param {string} string The string to inspect.\n   * @returns {number} Returns the string size.\n   */\n  function stringSize(string) {\n    return hasUnicode(string)\n      ? unicodeSize(string)\n      : asciiSize(string);\n  }\n\n  /**\n   * Converts `string` to an array.\n   *\n   * @private\n   * @param {string} string The string to convert.\n   * @returns {Array} Returns the converted array.\n   */\n  function stringToArray(string) {\n    return hasUnicode(string)\n      ? unicodeToArray(string)\n      : asciiToArray(string);\n  }\n\n  /**\n   * Used by `_.trim` and `_.trimEnd` to get the index of the last non-whitespace\n   * character of `string`.\n   *\n   * @private\n   * @param {string} string The string to inspect.\n   * @returns {number} Returns the index of the last non-whitespace character.\n   */\n  function trimmedEndIndex(string) {\n    var index = string.length;\n\n    while (index-- && reWhitespace.test(string.charAt(index))) {}\n    return index;\n  }\n\n  /**\n   * Used by `_.unescape` to convert HTML entities to characters.\n   *\n   * @private\n   * @param {string} chr The matched character to unescape.\n   * @returns {string} Returns the unescaped character.\n   */\n  var unescapeHtmlChar = basePropertyOf(htmlUnescapes);\n\n  /**\n   * Gets the size of a Unicode `string`.\n   *\n   * @private\n   * @param {string} string The string inspect.\n   * @returns {number} Returns the string size.\n   */\n  function unicodeSize(string) {\n    var result = reUnicode.lastIndex = 0;\n    while (reUnicode.test(string)) {\n      ++result;\n    }\n    return result;\n  }\n\n  /**\n   * Converts a Unicode `string` to an array.\n   *\n   * @private\n   * @param {string} string The string to convert.\n   * @returns {Array} Returns the converted array.\n   */\n  function unicodeToArray(string) {\n    return string.match(reUnicode) || [];\n  }\n\n  /**\n   * Splits a Unicode `string` into an array of its words.\n   *\n   * @private\n   * @param {string} The string to inspect.\n   * @returns {Array} Returns the words of `string`.\n   */\n  function unicodeWords(string) {\n    return string.match(reUnicodeWord) || [];\n  }\n\n  /*--------------------------------------------------------------------------*/\n\n  /**\n   * Create a new pristine `lodash` function using the `context` object.\n   *\n   * @static\n   * @memberOf _\n   * @since 1.1.0\n   * @category Util\n   * @param {Object} [context=root] The context object.\n   * @returns {Function} Returns a new `lodash` function.\n   * @example\n   *\n   * _.mixin({ 'foo': _.constant('foo') });\n   *\n   * var lodash = _.runInContext();\n   * lodash.mixin({ 'bar': lodash.constant('bar') });\n   *\n   * _.isFunction(_.foo);\n   * // => true\n   * _.isFunction(_.bar);\n   * // => false\n   *\n   * lodash.isFunction(lodash.foo);\n   * // => false\n   * lodash.isFunction(lodash.bar);\n   * // => true\n   *\n   * // Create a suped-up `defer` in Node.js.\n   * var defer = _.runInContext({ 'setTimeout': setImmediate }).defer;\n   */\n  var runInContext = (function runInContext(context) {\n    context = context == null ? root : _.defaults(root.Object(), context, _.pick(root, contextProps));\n\n    /** Built-in constructor references. */\n    var Array = context.Array,\n        Date = context.Date,\n        Error = context.Error,\n        Function = context.Function,\n        Math = context.Math,\n        Object = context.Object,\n        RegExp = context.RegExp,\n        String = context.String,\n        TypeError = context.TypeError;\n\n    /** Used for built-in method references. */\n    var arrayProto = Array.prototype,\n        funcProto = Function.prototype,\n        objectProto = Object.prototype;\n\n    /** Used to detect overreaching core-js shims. */\n    var coreJsData = context['__core-js_shared__'];\n\n    /** Used to resolve the decompiled source of functions. */\n    var funcToString = funcProto.toString;\n\n    /** Used to check objects for own properties. */\n    var hasOwnProperty = objectProto.hasOwnProperty;\n\n    /** Used to generate unique IDs. */\n    var idCounter = 0;\n\n    /** Used to detect methods masquerading as native. */\n    var maskSrcKey = (function() {\n      var uid = /[^.]+$/.exec(coreJsData && coreJsData.keys && coreJsData.keys.IE_PROTO || '');\n      return uid ? ('Symbol(src)_1.' + uid) : '';\n    }());\n\n    /**\n     * Used to resolve the\n     * [`toStringTag`](http://ecma-international.org/ecma-262/7.0/#sec-object.prototype.tostring)\n     * of values.\n     */\n    var nativeObjectToString = objectProto.toString;\n\n    /** Used to infer the `Object` constructor. */\n    var objectCtorString = funcToString.call(Object);\n\n    /** Used to restore the original `_` reference in `_.noConflict`. */\n    var oldDash = root._;\n\n    /** Used to detect if a method is native. */\n    var reIsNative = RegExp('^' +\n      funcToString.call(hasOwnProperty).replace(reRegExpChar, '\\\\$&')\n      .replace(/hasOwnProperty|(function).*?(?=\\\\\\()| for .+?(?=\\\\\\])/g, '$1.*?') + '$'\n    );\n\n    /** Built-in value references. */\n    var Buffer = moduleExports ? context.Buffer : undefined,\n        Symbol = context.Symbol,\n        Uint8Array = context.Uint8Array,\n        allocUnsafe = Buffer ? Buffer.allocUnsafe : undefined,\n        getPrototype = overArg(Object.getPrototypeOf, Object),\n        objectCreate = Object.create,\n        propertyIsEnumerable = objectProto.propertyIsEnumerable,\n        splice = arrayProto.splice,\n        spreadableSymbol = Symbol ? Symbol.isConcatSpreadable : undefined,\n        symIterator = Symbol ? Symbol.iterator : undefined,\n        symToStringTag = Symbol ? Symbol.toStringTag : undefined;\n\n    var defineProperty = (function() {\n      try {\n        var func = getNative(Object, 'defineProperty');\n        func({}, '', {});\n        return func;\n      } catch (e) {}\n    }());\n\n    /** Mocked built-ins. */\n    var ctxClearTimeout = context.clearTimeout !== root.clearTimeout && context.clearTimeout,\n        ctxNow = Date && Date.now !== root.Date.now && Date.now,\n        ctxSetTimeout = context.setTimeout !== root.setTimeout && context.setTimeout;\n\n    /* Built-in method references for those with the same name as other `lodash` methods. */\n    var nativeCeil = Math.ceil,\n        nativeFloor = Math.floor,\n        nativeGetSymbols = Object.getOwnPropertySymbols,\n        nativeIsBuffer = Buffer ? Buffer.isBuffer : undefined,\n        nativeIsFinite = context.isFinite,\n        nativeJoin = arrayProto.join,\n        nativeKeys = overArg(Object.keys, Object),\n        nativeMax = Math.max,\n        nativeMin = Math.min,\n        nativeNow = Date.now,\n        nativeParseInt = context.parseInt,\n        nativeRandom = Math.random,\n        nativeReverse = arrayProto.reverse;\n\n    /* Built-in method references that are verified to be native. */\n    var DataView = getNative(context, 'DataView'),\n        Map = getNative(context, 'Map'),\n        Promise = getNative(context, 'Promise'),\n        Set = getNative(context, 'Set'),\n        WeakMap = getNative(context, 'WeakMap'),\n        nativeCreate = getNative(Object, 'create');\n\n    /** Used to store function metadata. */\n    var metaMap = WeakMap && new WeakMap;\n\n    /** Used to lookup unminified function names. */\n    var realNames = {};\n\n    /** Used to detect maps, sets, and weakmaps. */\n    var dataViewCtorString = toSource(DataView),\n        mapCtorString = toSource(Map),\n        promiseCtorString = toSource(Promise),\n        setCtorString = toSource(Set),\n        weakMapCtorString = toSource(WeakMap);\n\n    /** Used to convert symbols to primitives and strings. */\n    var symbolProto = Symbol ? Symbol.prototype : undefined,\n        symbolValueOf = symbolProto ? symbolProto.valueOf : undefined,\n        symbolToString = symbolProto ? symbolProto.toString : undefined;\n\n    /*------------------------------------------------------------------------*/\n\n    /**\n     * Creates a `lodash` object which wraps `value` to enable implicit method\n     * chain sequences. Methods that operate on and return arrays, collections,\n     * and functions can be chained together. Methods that retrieve a single value\n     * or may return a primitive value will automatically end the chain sequence\n     * and return the unwrapped value. Otherwise, the value must be unwrapped\n     * with `_#value`.\n     *\n     * Explicit chain sequences, which must be unwrapped with `_#value`, may be\n     * enabled using `_.chain`.\n     *\n     * The execution of chained methods is lazy, that is, it's deferred until\n     * `_#value` is implicitly or explicitly called.\n     *\n     * Lazy evaluation allows several methods to support shortcut fusion.\n     * Shortcut fusion is an optimization to merge iteratee calls; this avoids\n     * the creation of intermediate arrays and can greatly reduce the number of\n     * iteratee executions. Sections of a chain sequence qualify for shortcut\n     * fusion if the section is applied to an array and iteratees accept only\n     * one argument. The heuristic for whether a section qualifies for shortcut\n     * fusion is subject to change.\n     *\n     * Chaining is supported in custom builds as long as the `_#value` method is\n     * directly or indirectly included in the build.\n     *\n     * In addition to lodash methods, wrappers have `Array` and `String` methods.\n     *\n     * The wrapper `Array` methods are:\n     * `concat`, `join`, `pop`, `push`, `shift`, `sort`, `splice`, and `unshift`\n     *\n     * The wrapper `String` methods are:\n     * `replace` and `split`\n     *\n     * The wrapper methods that support shortcut fusion are:\n     * `at`, `compact`, `drop`, `dropRight`, `dropWhile`, `filter`, `find`,\n     * `findLast`, `head`, `initial`, `last`, `map`, `reject`, `reverse`, `slice`,\n     * `tail`, `take`, `takeRight`, `takeRightWhile`, `takeWhile`, and `toArray`\n     *\n     * The chainable wrapper methods are:\n     * `after`, `ary`, `assign`, `assignIn`, `assignInWith`, `assignWith`, `at`,\n     * `before`, `bind`, `bindAll`, `bindKey`, `castArray`, `chain`, `chunk`,\n     * `commit`, `compact`, `concat`, `conforms`, `constant`, `countBy`, `create`,\n     * `curry`, `debounce`, `defaults`, `defaultsDeep`, `defer`, `delay`,\n     * `difference`, `differenceBy`, `differenceWith`, `drop`, `dropRight`,\n     * `dropRightWhile`, `dropWhile`, `extend`, `extendWith`, `fill`, `filter`,\n     * `flatMap`, `flatMapDeep`, `flatMapDepth`, `flatten`, `flattenDeep`,\n     * `flattenDepth`, `flip`, `flow`, `flowRight`, `fromPairs`, `functions`,\n     * `functionsIn`, `groupBy`, `initial`, `intersection`, `intersectionBy`,\n     * `intersectionWith`, `invert`, `invertBy`, `invokeMap`, `iteratee`, `keyBy`,\n     * `keys`, `keysIn`, `map`, `mapKeys`, `mapValues`, `matches`, `matchesProperty`,\n     * `memoize`, `merge`, `mergeWith`, `method`, `methodOf`, `mixin`, `negate`,\n     * `nthArg`, `omit`, `omitBy`, `once`, `orderBy`, `over`, `overArgs`,\n     * `overEvery`, `overSome`, `partial`, `partialRight`, `partition`, `pick`,\n     * `pickBy`, `plant`, `property`, `propertyOf`, `pull`, `pullAll`, `pullAllBy`,\n     * `pullAllWith`, `pullAt`, `push`, `range`, `rangeRight`, `rearg`, `reject`,\n     * `remove`, `rest`, `reverse`, `sampleSize`, `set`, `setWith`, `shuffle`,\n     * `slice`, `sort`, `sortBy`, `splice`, `spread`, `tail`, `take`, `takeRight`,\n     * `takeRightWhile`, `takeWhile`, `tap`, `throttle`, `thru`, `toArray`,\n     * `toPairs`, `toPairsIn`, `toPath`, `toPlainObject`, `transform`, `unary`,\n     * `union`, `unionBy`, `unionWith`, `uniq`, `uniqBy`, `uniqWith`, `unset`,\n     * `unshift`, `unzip`, `unzipWith`, `update`, `updateWith`, `values`,\n     * `valuesIn`, `without`, `wrap`, `xor`, `xorBy`, `xorWith`, `zip`,\n     * `zipObject`, `zipObjectDeep`, and `zipWith`\n     *\n     * The wrapper methods that are **not** chainable by default are:\n     * `add`, `attempt`, `camelCase`, `capitalize`, `ceil`, `clamp`, `clone`,\n     * `cloneDeep`, `cloneDeepWith`, `cloneWith`, `conformsTo`, `deburr`,\n     * `defaultTo`, `divide`, `each`, `eachRight`, `endsWith`, `eq`, `escape`,\n     * `escapeRegExp`, `every`, `find`, `findIndex`, `findKey`, `findLast`,\n     * `findLastIndex`, `findLastKey`, `first`, `floor`, `forEach`, `forEachRight`,\n     * `forIn`, `forInRight`, `forOwn`, `forOwnRight`, `get`, `gt`, `gte`, `has`,\n     * `hasIn`, `head`, `identity`, `includes`, `indexOf`, `inRange`, `invoke`,\n     * `isArguments`, `isArray`, `isArrayBuffer`, `isArrayLike`, `isArrayLikeObject`,\n     * `isBoolean`, `isBuffer`, `isDate`, `isElement`, `isEmpty`, `isEqual`,\n     * `isEqualWith`, `isError`, `isFinite`, `isFunction`, `isInteger`, `isLength`,\n     * `isMap`, `isMatch`, `isMatchWith`, `isNaN`, `isNative`, `isNil`, `isNull`,\n     * `isNumber`, `isObject`, `isObjectLike`, `isPlainObject`, `isRegExp`,\n     * `isSafeInteger`, `isSet`, `isString`, `isUndefined`, `isTypedArray`,\n     * `isWeakMap`, `isWeakSet`, `join`, `kebabCase`, `last`, `lastIndexOf`,\n     * `lowerCase`, `lowerFirst`, `lt`, `lte`, `max`, `maxBy`, `mean`, `meanBy`,\n     * `min`, `minBy`, `multiply`, `noConflict`, `noop`, `now`, `nth`, `pad`,\n     * `padEnd`, `padStart`, `parseInt`, `pop`, `random`, `reduce`, `reduceRight`,\n     * `repeat`, `result`, `round`, `runInContext`, `sample`, `shift`, `size`,\n     * `snakeCase`, `some`, `sortedIndex`, `sortedIndexBy`, `sortedLastIndex`,\n     * `sortedLastIndexBy`, `startCase`, `startsWith`, `stubArray`, `stubFalse`,\n     * `stubObject`, `stubString`, `stubTrue`, `subtract`, `sum`, `sumBy`,\n     * `template`, `times`, `toFinite`, `toInteger`, `toJSON`, `toLength`,\n     * `toLower`, `toNumber`, `toSafeInteger`, `toString`, `toUpper`, `trim`,\n     * `trimEnd`, `trimStart`, `truncate`, `unescape`, `uniqueId`, `upperCase`,\n     * `upperFirst`, `value`, and `words`\n     *\n     * @name _\n     * @constructor\n     * @category Seq\n     * @param {*} value The value to wrap in a `lodash` instance.\n     * @returns {Object} Returns the new `lodash` wrapper instance.\n     * @example\n     *\n     * function square(n) {\n     *   return n * n;\n     * }\n     *\n     * var wrapped = _([1, 2, 3]);\n     *\n     * // Returns an unwrapped value.\n     * wrapped.reduce(_.add);\n     * // => 6\n     *\n     * // Returns a wrapped value.\n     * var squares = wrapped.map(square);\n     *\n     * _.isArray(squares);\n     * // => false\n     *\n     * _.isArray(squares.value());\n     * // => true\n     */\n    function lodash(value) {\n      if (isObjectLike(value) && !isArray(value) && !(value instanceof LazyWrapper)) {\n        if (value instanceof LodashWrapper) {\n          return value;\n        }\n        if (hasOwnProperty.call(value, '__wrapped__')) {\n          return wrapperClone(value);\n        }\n      }\n      return new LodashWrapper(value);\n    }\n\n    /**\n     * The base implementation of `_.create` without support for assigning\n     * properties to the created object.\n     *\n     * @private\n     * @param {Object} proto The object to inherit from.\n     * @returns {Object} Returns the new object.\n     */\n    var baseCreate = (function() {\n      function object() {}\n      return function(proto) {\n        if (!isObject(proto)) {\n          return {};\n        }\n        if (objectCreate) {\n          return objectCreate(proto);\n        }\n        object.prototype = proto;\n        var result = new object;\n        object.prototype = undefined;\n        return result;\n      };\n    }());\n\n    /**\n     * The function whose prototype chain sequence wrappers inherit from.\n     *\n     * @private\n     */\n    function baseLodash() {\n      // No operation performed.\n    }\n\n    /**\n     * The base constructor for creating `lodash` wrapper objects.\n     *\n     * @private\n     * @param {*} value The value to wrap.\n     * @param {boolean} [chainAll] Enable explicit method chain sequences.\n     */\n    function LodashWrapper(value, chainAll) {\n      this.__wrapped__ = value;\n      this.__actions__ = [];\n      this.__chain__ = !!chainAll;\n      this.__index__ = 0;\n      this.__values__ = undefined;\n    }\n\n    /**\n     * By default, the template delimiters used by lodash are like those in\n     * embedded Ruby (ERB) as well as ES2015 template strings. Change the\n     * following template settings to use alternative delimiters.\n     *\n     * @static\n     * @memberOf _\n     * @type {Object}\n     */\n    lodash.templateSettings = {\n\n      /**\n       * Used to detect `data` property values to be HTML-escaped.\n       *\n       * @memberOf _.templateSettings\n       * @type {RegExp}\n       */\n      'escape': reEscape,\n\n      /**\n       * Used to detect code to be evaluated.\n       *\n       * @memberOf _.templateSettings\n       * @type {RegExp}\n       */\n      'evaluate': reEvaluate,\n\n      /**\n       * Used to detect `data` property values to inject.\n       *\n       * @memberOf _.templateSettings\n       * @type {RegExp}\n       */\n      'interpolate': reInterpolate,\n\n      /**\n       * Used to reference the data object in the template text.\n       *\n       * @memberOf _.templateSettings\n       * @type {string}\n       */\n      'variable': '',\n\n      /**\n       * Used to import variables into the compiled template.\n       *\n       * @memberOf _.templateSettings\n       * @type {Object}\n       */\n      'imports': {\n\n        /**\n         * A reference to the `lodash` function.\n         *\n         * @memberOf _.templateSettings.imports\n         * @type {Function}\n         */\n        '_': lodash\n      }\n    };\n\n    // Ensure wrappers are instances of `baseLodash`.\n    lodash.prototype = baseLodash.prototype;\n    lodash.prototype.constructor = lodash;\n\n    LodashWrapper.prototype = baseCreate(baseLodash.prototype);\n    LodashWrapper.prototype.constructor = LodashWrapper;\n\n    /*------------------------------------------------------------------------*/\n\n    /**\n     * Creates a lazy wrapper object which wraps `value` to enable lazy evaluation.\n     *\n     * @private\n     * @constructor\n     * @param {*} value The value to wrap.\n     */\n    function LazyWrapper(value) {\n      this.__wrapped__ = value;\n      this.__actions__ = [];\n      this.__dir__ = 1;\n      this.__filtered__ = false;\n      this.__iteratees__ = [];\n      this.__takeCount__ = MAX_ARRAY_LENGTH;\n      this.__views__ = [];\n    }\n\n    /**\n     * Creates a clone of the lazy wrapper object.\n     *\n     * @private\n     * @name clone\n     * @memberOf LazyWrapper\n     * @returns {Object} Returns the cloned `LazyWrapper` object.\n     */\n    function lazyClone() {\n      var result = new LazyWrapper(this.__wrapped__);\n      result.__actions__ = copyArray(this.__actions__);\n      result.__dir__ = this.__dir__;\n      result.__filtered__ = this.__filtered__;\n      result.__iteratees__ = copyArray(this.__iteratees__);\n      result.__takeCount__ = this.__takeCount__;\n      result.__views__ = copyArray(this.__views__);\n      return result;\n    }\n\n    /**\n     * Reverses the direction of lazy iteration.\n     *\n     * @private\n     * @name reverse\n     * @memberOf LazyWrapper\n     * @returns {Object} Returns the new reversed `LazyWrapper` object.\n     */\n    function lazyReverse() {\n      if (this.__filtered__) {\n        var result = new LazyWrapper(this);\n        result.__dir__ = -1;\n        result.__filtered__ = true;\n      } else {\n        result = this.clone();\n        result.__dir__ *= -1;\n      }\n      return result;\n    }\n\n    /**\n     * Extracts the unwrapped value from its lazy wrapper.\n     *\n     * @private\n     * @name value\n     * @memberOf LazyWrapper\n     * @returns {*} Returns the unwrapped value.\n     */\n    function lazyValue() {\n      var array = this.__wrapped__.value(),\n          dir = this.__dir__,\n          isArr = isArray(array),\n          isRight = dir < 0,\n          arrLength = isArr ? array.length : 0,\n          view = getView(0, arrLength, this.__views__),\n          start = view.start,\n          end = view.end,\n          length = end - start,\n          index = isRight ? end : (start - 1),\n          iteratees = this.__iteratees__,\n          iterLength = iteratees.length,\n          resIndex = 0,\n          takeCount = nativeMin(length, this.__takeCount__);\n\n      if (!isArr || (!isRight && arrLength == length && takeCount == length)) {\n        return baseWrapperValue(array, this.__actions__);\n      }\n      var result = [];\n\n      outer:\n      while (length-- && resIndex < takeCount) {\n        index += dir;\n\n        var iterIndex = -1,\n            value = array[index];\n\n        while (++iterIndex < iterLength) {\n          var data = iteratees[iterIndex],\n              iteratee = data.iteratee,\n              type = data.type,\n              computed = iteratee(value);\n\n          if (type == LAZY_MAP_FLAG) {\n            value = computed;\n          } else if (!computed) {\n            if (type == LAZY_FILTER_FLAG) {\n              continue outer;\n            } else {\n              break outer;\n            }\n          }\n        }\n        result[resIndex++] = value;\n      }\n      return result;\n    }\n\n    // Ensure `LazyWrapper` is an instance of `baseLodash`.\n    LazyWrapper.prototype = baseCreate(baseLodash.prototype);\n    LazyWrapper.prototype.constructor = LazyWrapper;\n\n    /*------------------------------------------------------------------------*/\n\n    /**\n     * Creates a hash object.\n     *\n     * @private\n     * @constructor\n     * @param {Array} [entries] The key-value pairs to cache.\n     */\n    function Hash(entries) {\n      var index = -1,\n          length = entries == null ? 0 : entries.length;\n\n      this.clear();\n      while (++index < length) {\n        var entry = entries[index];\n        this.set(entry[0], entry[1]);\n      }\n    }\n\n    /**\n     * Removes all key-value entries from the hash.\n     *\n     * @private\n     * @name clear\n     * @memberOf Hash\n     */\n    function hashClear() {\n      this.__data__ = nativeCreate ? nativeCreate(null) : {};\n      this.size = 0;\n    }\n\n    /**\n     * Removes `key` and its value from the hash.\n     *\n     * @private\n     * @name delete\n     * @memberOf Hash\n     * @param {Object} hash The hash to modify.\n     * @param {string} key The key of the value to remove.\n     * @returns {boolean} Returns `true` if the entry was removed, else `false`.\n     */\n    function hashDelete(key) {\n      var result = this.has(key) && delete this.__data__[key];\n      this.size -= result ? 1 : 0;\n      return result;\n    }\n\n    /**\n     * Gets the hash value for `key`.\n     *\n     * @private\n     * @name get\n     * @memberOf Hash\n     * @param {string} key The key of the value to get.\n     * @returns {*} Returns the entry value.\n     */\n    function hashGet(key) {\n      var data = this.__data__;\n      if (nativeCreate) {\n        var result = data[key];\n        return result === HASH_UNDEFINED ? undefined : result;\n      }\n      return hasOwnProperty.call(data, key) ? data[key] : undefined;\n    }\n\n    /**\n     * Checks if a hash value for `key` exists.\n     *\n     * @private\n     * @name has\n     * @memberOf Hash\n     * @param {string} key The key of the entry to check.\n     * @returns {boolean} Returns `true` if an entry for `key` exists, else `false`.\n     */\n    function hashHas(key) {\n      var data = this.__data__;\n      return nativeCreate ? (data[key] !== undefined) : hasOwnProperty.call(data, key);\n    }\n\n    /**\n     * Sets the hash `key` to `value`.\n     *\n     * @private\n     * @name set\n     * @memberOf Hash\n     * @param {string} key The key of the value to set.\n     * @param {*} value The value to set.\n     * @returns {Object} Returns the hash instance.\n     */\n    function hashSet(key, value) {\n      var data = this.__data__;\n      this.size += this.has(key) ? 0 : 1;\n      data[key] = (nativeCreate && value === undefined) ? HASH_UNDEFINED : value;\n      return this;\n    }\n\n    // Add methods to `Hash`.\n    Hash.prototype.clear = hashClear;\n    Hash.prototype['delete'] = hashDelete;\n    Hash.prototype.get = hashGet;\n    Hash.prototype.has = hashHas;\n    Hash.prototype.set = hashSet;\n\n    /*------------------------------------------------------------------------*/\n\n    /**\n     * Creates an list cache object.\n     *\n     * @private\n     * @constructor\n     * @param {Array} [entries] The key-value pairs to cache.\n     */\n    function ListCache(entries) {\n      var index = -1,\n          length = entries == null ? 0 : entries.length;\n\n      this.clear();\n      while (++index < length) {\n        var entry = entries[index];\n        this.set(entry[0], entry[1]);\n      }\n    }\n\n    /**\n     * Removes all key-value entries from the list cache.\n     *\n     * @private\n     * @name clear\n     * @memberOf ListCache\n     */\n    function listCacheClear() {\n      this.__data__ = [];\n      this.size = 0;\n    }\n\n    /**\n     * Removes `key` and its value from the list cache.\n     *\n     * @private\n     * @name delete\n     * @memberOf ListCache\n     * @param {string} key The key of the value to remove.\n     * @returns {boolean} Returns `true` if the entry was removed, else `false`.\n     */\n    function listCacheDelete(key) {\n      var data = this.__data__,\n          index = assocIndexOf(data, key);\n\n      if (index < 0) {\n        return false;\n      }\n      var lastIndex = data.length - 1;\n      if (index == lastIndex) {\n        data.pop();\n      } else {\n        splice.call(data, index, 1);\n      }\n      --this.size;\n      return true;\n    }\n\n    /**\n     * Gets the list cache value for `key`.\n     *\n     * @private\n     * @name get\n     * @memberOf ListCache\n     * @param {string} key The key of the value to get.\n     * @returns {*} Returns the entry value.\n     */\n    function listCacheGet(key) {\n      var data = this.__data__,\n          index = assocIndexOf(data, key);\n\n      return index < 0 ? undefined : data[index][1];\n    }\n\n    /**\n     * Checks if a list cache value for `key` exists.\n     *\n     * @private\n     * @name has\n     * @memberOf ListCache\n     * @param {string} key The key of the entry to check.\n     * @returns {boolean} Returns `true` if an entry for `key` exists, else `false`.\n     */\n    function listCacheHas(key) {\n      return assocIndexOf(this.__data__, key) > -1;\n    }\n\n    /**\n     * Sets the list cache `key` to `value`.\n     *\n     * @private\n     * @name set\n     * @memberOf ListCache\n     * @param {string} key The key of the value to set.\n     * @param {*} value The value to set.\n     * @returns {Object} Returns the list cache instance.\n     */\n    function listCacheSet(key, value) {\n      var data = this.__data__,\n          index = assocIndexOf(data, key);\n\n      if (index < 0) {\n        ++this.size;\n        data.push([key, value]);\n      } else {\n        data[index][1] = value;\n      }\n      return this;\n    }\n\n    // Add methods to `ListCache`.\n    ListCache.prototype.clear = listCacheClear;\n    ListCache.prototype['delete'] = listCacheDelete;\n    ListCache.prototype.get = listCacheGet;\n    ListCache.prototype.has = listCacheHas;\n    ListCache.prototype.set = listCacheSet;\n\n    /*------------------------------------------------------------------------*/\n\n    /**\n     * Creates a map cache object to store key-value pairs.\n     *\n     * @private\n     * @constructor\n     * @param {Array} [entries] The key-value pairs to cache.\n     */\n    function MapCache(entries) {\n      var index = -1,\n          length = entries == null ? 0 : entries.length;\n\n      this.clear();\n      while (++index < length) {\n        var entry = entries[index];\n        this.set(entry[0], entry[1]);\n      }\n    }\n\n    /**\n     * Removes all key-value entries from the map.\n     *\n     * @private\n     * @name clear\n     * @memberOf MapCache\n     */\n    function mapCacheClear() {\n      this.size = 0;\n      this.__data__ = {\n        'hash': new Hash,\n        'map': new (Map || ListCache),\n        'string': new Hash\n      };\n    }\n\n    /**\n     * Removes `key` and its value from the map.\n     *\n     * @private\n     * @name delete\n     * @memberOf MapCache\n     * @param {string} key The key of the value to remove.\n     * @returns {boolean} Returns `true` if the entry was removed, else `false`.\n     */\n    function mapCacheDelete(key) {\n      var result = getMapData(this, key)['delete'](key);\n      this.size -= result ? 1 : 0;\n      return result;\n    }\n\n    /**\n     * Gets the map value for `key`.\n     *\n     * @private\n     * @name get\n     * @memberOf MapCache\n     * @param {string} key The key of the value to get.\n     * @returns {*} Returns the entry value.\n     */\n    function mapCacheGet(key) {\n      return getMapData(this, key).get(key);\n    }\n\n    /**\n     * Checks if a map value for `key` exists.\n     *\n     * @private\n     * @name has\n     * @memberOf MapCache\n     * @param {string} key The key of the entry to check.\n     * @returns {boolean} Returns `true` if an entry for `key` exists, else `false`.\n     */\n    function mapCacheHas(key) {\n      return getMapData(this, key).has(key);\n    }\n\n    /**\n     * Sets the map `key` to `value`.\n     *\n     * @private\n     * @name set\n     * @memberOf MapCache\n     * @param {string} key The key of the value to set.\n     * @param {*} value The value to set.\n     * @returns {Object} Returns the map cache instance.\n     */\n    function mapCacheSet(key, value) {\n      var data = getMapData(this, key),\n          size = data.size;\n\n      data.set(key, value);\n      this.size += data.size == size ? 0 : 1;\n      return this;\n    }\n\n    // Add methods to `MapCache`.\n    MapCache.prototype.clear = mapCacheClear;\n    MapCache.prototype['delete'] = mapCacheDelete;\n    MapCache.prototype.get = mapCacheGet;\n    MapCache.prototype.has = mapCacheHas;\n    MapCache.prototype.set = mapCacheSet;\n\n    /*------------------------------------------------------------------------*/\n\n    /**\n     *\n     * Creates an array cache object to store unique values.\n     *\n     * @private\n     * @constructor\n     * @param {Array} [values] The values to cache.\n     */\n    function SetCache(values) {\n      var index = -1,\n          length = values == null ? 0 : values.length;\n\n      this.__data__ = new MapCache;\n      while (++index < length) {\n        this.add(values[index]);\n      }\n    }\n\n    /**\n     * Adds `value` to the array cache.\n     *\n     * @private\n     * @name add\n     * @memberOf SetCache\n     * @alias push\n     * @param {*} value The value to cache.\n     * @returns {Object} Returns the cache instance.\n     */\n    function setCacheAdd(value) {\n      this.__data__.set(value, HASH_UNDEFINED);\n      return this;\n    }\n\n    /**\n     * Checks if `value` is in the array cache.\n     *\n     * @private\n     * @name has\n     * @memberOf SetCache\n     * @param {*} value The value to search for.\n     * @returns {number} Returns `true` if `value` is found, else `false`.\n     */\n    function setCacheHas(value) {\n      return this.__data__.has(value);\n    }\n\n    // Add methods to `SetCache`.\n    SetCache.prototype.add = SetCache.prototype.push = setCacheAdd;\n    SetCache.prototype.has = setCacheHas;\n\n    /*------------------------------------------------------------------------*/\n\n    /**\n     * Creates a stack cache object to store key-value pairs.\n     *\n     * @private\n     * @constructor\n     * @param {Array} [entries] The key-value pairs to cache.\n     */\n    function Stack(entries) {\n      var data = this.__data__ = new ListCache(entries);\n      this.size = data.size;\n    }\n\n    /**\n     * Removes all key-value entries from the stack.\n     *\n     * @private\n     * @name clear\n     * @memberOf Stack\n     */\n    function stackClear() {\n      this.__data__ = new ListCache;\n      this.size = 0;\n    }\n\n    /**\n     * Removes `key` and its value from the stack.\n     *\n     * @private\n     * @name delete\n     * @memberOf Stack\n     * @param {string} key The key of the value to remove.\n     * @returns {boolean} Returns `true` if the entry was removed, else `false`.\n     */\n    function stackDelete(key) {\n      var data = this.__data__,\n          result = data['delete'](key);\n\n      this.size = data.size;\n      return result;\n    }\n\n    /**\n     * Gets the stack value for `key`.\n     *\n     * @private\n     * @name get\n     * @memberOf Stack\n     * @param {string} key The key of the value to get.\n     * @returns {*} Returns the entry value.\n     */\n    function stackGet(key) {\n      return this.__data__.get(key);\n    }\n\n    /**\n     * Checks if a stack value for `key` exists.\n     *\n     * @private\n     * @name has\n     * @memberOf Stack\n     * @param {string} key The key of the entry to check.\n     * @returns {boolean} Returns `true` if an entry for `key` exists, else `false`.\n     */\n    function stackHas(key) {\n      return this.__data__.has(key);\n    }\n\n    /**\n     * Sets the stack `key` to `value`.\n     *\n     * @private\n     * @name set\n     * @memberOf Stack\n     * @param {string} key The key of the value to set.\n     * @param {*} value The value to set.\n     * @returns {Object} Returns the stack cache instance.\n     */\n    function stackSet(key, value) {\n      var data = this.__data__;\n      if (data instanceof ListCache) {\n        var pairs = data.__data__;\n        if (!Map || (pairs.length < LARGE_ARRAY_SIZE - 1)) {\n          pairs.push([key, value]);\n          this.size = ++data.size;\n          return this;\n        }\n        data = this.__data__ = new MapCache(pairs);\n      }\n      data.set(key, value);\n      this.size = data.size;\n      return this;\n    }\n\n    // Add methods to `Stack`.\n    Stack.prototype.clear = stackClear;\n    Stack.prototype['delete'] = stackDelete;\n    Stack.prototype.get = stackGet;\n    Stack.prototype.has = stackHas;\n    Stack.prototype.set = stackSet;\n\n    /*------------------------------------------------------------------------*/\n\n    /**\n     * Creates an array of the enumerable property names of the array-like `value`.\n     *\n     * @private\n     * @param {*} value The value to query.\n     * @param {boolean} inherited Specify returning inherited property names.\n     * @returns {Array} Returns the array of property names.\n     */\n    function arrayLikeKeys(value, inherited) {\n      var isArr = isArray(value),\n          isArg = !isArr && isArguments(value),\n          isBuff = !isArr && !isArg && isBuffer(value),\n          isType = !isArr && !isArg && !isBuff && isTypedArray(value),\n          skipIndexes = isArr || isArg || isBuff || isType,\n          result = skipIndexes ? baseTimes(value.length, String) : [],\n          length = result.length;\n\n      for (var key in value) {\n        if ((inherited || hasOwnProperty.call(value, key)) &&\n            !(skipIndexes && (\n               // Safari 9 has enumerable `arguments.length` in strict mode.\n               key == 'length' ||\n               // Node.js 0.10 has enumerable non-index properties on buffers.\n               (isBuff && (key == 'offset' || key == 'parent')) ||\n               // PhantomJS 2 has enumerable non-index properties on typed arrays.\n               (isType && (key == 'buffer' || key == 'byteLength' || key == 'byteOffset')) ||\n               // Skip index properties.\n               isIndex(key, length)\n            ))) {\n          result.push(key);\n        }\n      }\n      return result;\n    }\n\n    /**\n     * A specialized version of `_.sample` for arrays.\n     *\n     * @private\n     * @param {Array} array The array to sample.\n     * @returns {*} Returns the random element.\n     */\n    function arraySample(array) {\n      var length = array.length;\n      return length ? array[baseRandom(0, length - 1)] : undefined;\n    }\n\n    /**\n     * A specialized version of `_.sampleSize` for arrays.\n     *\n     * @private\n     * @param {Array} array The array to sample.\n     * @param {number} n The number of elements to sample.\n     * @returns {Array} Returns the random elements.\n     */\n    function arraySampleSize(array, n) {\n      return shuffleSelf(copyArray(array), baseClamp(n, 0, array.length));\n    }\n\n    /**\n     * A specialized version of `_.shuffle` for arrays.\n     *\n     * @private\n     * @param {Array} array The array to shuffle.\n     * @returns {Array} Returns the new shuffled array.\n     */\n    function arrayShuffle(array) {\n      return shuffleSelf(copyArray(array));\n    }\n\n    /**\n     * This function is like `assignValue` except that it doesn't assign\n     * `undefined` values.\n     *\n     * @private\n     * @param {Object} object The object to modify.\n     * @param {string} key The key of the property to assign.\n     * @param {*} value The value to assign.\n     */\n    function assignMergeValue(object, key, value) {\n      if ((value !== undefined && !eq(object[key], value)) ||\n          (value === undefined && !(key in object))) {\n        baseAssignValue(object, key, value);\n      }\n    }\n\n    /**\n     * Assigns `value` to `key` of `object` if the existing value is not equivalent\n     * using [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)\n     * for equality comparisons.\n     *\n     * @private\n     * @param {Object} object The object to modify.\n     * @param {string} key The key of the property to assign.\n     * @param {*} value The value to assign.\n     */\n    function assignValue(object, key, value) {\n      var objValue = object[key];\n      if (!(hasOwnProperty.call(object, key) && eq(objValue, value)) ||\n          (value === undefined && !(key in object))) {\n        baseAssignValue(object, key, value);\n      }\n    }\n\n    /**\n     * Gets the index at which the `key` is found in `array` of key-value pairs.\n     *\n     * @private\n     * @param {Array} array The array to inspect.\n     * @param {*} key The key to search for.\n     * @returns {number} Returns the index of the matched value, else `-1`.\n     */\n    function assocIndexOf(array, key) {\n      var length = array.length;\n      while (length--) {\n        if (eq(array[length][0], key)) {\n          return length;\n        }\n      }\n      return -1;\n    }\n\n    /**\n     * Aggregates elements of `collection` on `accumulator` with keys transformed\n     * by `iteratee` and values set by `setter`.\n     *\n     * @private\n     * @param {Array|Object} collection The collection to iterate over.\n     * @param {Function} setter The function to set `accumulator` values.\n     * @param {Function} iteratee The iteratee to transform keys.\n     * @param {Object} accumulator The initial aggregated object.\n     * @returns {Function} Returns `accumulator`.\n     */\n    function baseAggregator(collection, setter, iteratee, accumulator) {\n      baseEach(collection, function(value, key, collection) {\n        setter(accumulator, value, iteratee(value), collection);\n      });\n      return accumulator;\n    }\n\n    /**\n     * The base implementation of `_.assign` without support for multiple sources\n     * or `customizer` functions.\n     *\n     * @private\n     * @param {Object} object The destination object.\n     * @param {Object} source The source object.\n     * @returns {Object} Returns `object`.\n     */\n    function baseAssign(object, source) {\n      return object && copyObject(source, keys(source), object);\n    }\n\n    /**\n     * The base implementation of `_.assignIn` without support for multiple sources\n     * or `customizer` functions.\n     *\n     * @private\n     * @param {Object} object The destination object.\n     * @param {Object} source The source object.\n     * @returns {Object} Returns `object`.\n     */\n    function baseAssignIn(object, source) {\n      return object && copyObject(source, keysIn(source), object);\n    }\n\n    /**\n     * The base implementation of `assignValue` and `assignMergeValue` without\n     * value checks.\n     *\n     * @private\n     * @param {Object} object The object to modify.\n     * @param {string} key The key of the property to assign.\n     * @param {*} value The value to assign.\n     */\n    function baseAssignValue(object, key, value) {\n      if (key == '__proto__' && defineProperty) {\n        defineProperty(object, key, {\n          'configurable': true,\n          'enumerable': true,\n          'value': value,\n          'writable': true\n        });\n      } else {\n        object[key] = value;\n      }\n    }\n\n    /**\n     * The base implementation of `_.at` without support for individual paths.\n     *\n     * @private\n     * @param {Object} object The object to iterate over.\n     * @param {string[]} paths The property paths to pick.\n     * @returns {Array} Returns the picked elements.\n     */\n    function baseAt(object, paths) {\n      var index = -1,\n          length = paths.length,\n          result = Array(length),\n          skip = object == null;\n\n      while (++index < length) {\n        result[index] = skip ? undefined : get(object, paths[index]);\n      }\n      return result;\n    }\n\n    /**\n     * The base implementation of `_.clamp` which doesn't coerce arguments.\n     *\n     * @private\n     * @param {number} number The number to clamp.\n     * @param {number} [lower] The lower bound.\n     * @param {number} upper The upper bound.\n     * @returns {number} Returns the clamped number.\n     */\n    function baseClamp(number, lower, upper) {\n      if (number === number) {\n        if (upper !== undefined) {\n          number = number <= upper ? number : upper;\n        }\n        if (lower !== undefined) {\n          number = number >= lower ? number : lower;\n        }\n      }\n      return number;\n    }\n\n    /**\n     * The base implementation of `_.clone` and `_.cloneDeep` which tracks\n     * traversed objects.\n     *\n     * @private\n     * @param {*} value The value to clone.\n     * @param {boolean} bitmask The bitmask flags.\n     *  1 - Deep clone\n     *  2 - Flatten inherited properties\n     *  4 - Clone symbols\n     * @param {Function} [customizer] The function to customize cloning.\n     * @param {string} [key] The key of `value`.\n     * @param {Object} [object] The parent object of `value`.\n     * @param {Object} [stack] Tracks traversed objects and their clone counterparts.\n     * @returns {*} Returns the cloned value.\n     */\n    function baseClone(value, bitmask, customizer, key, object, stack) {\n      var result,\n          isDeep = bitmask & CLONE_DEEP_FLAG,\n          isFlat = bitmask & CLONE_FLAT_FLAG,\n          isFull = bitmask & CLONE_SYMBOLS_FLAG;\n\n      if (customizer) {\n        result = object ? customizer(value, key, object, stack) : customizer(value);\n      }\n      if (result !== undefined) {\n        return result;\n      }\n      if (!isObject(value)) {\n        return value;\n      }\n      var isArr = isArray(value);\n      if (isArr) {\n        result = initCloneArray(value);\n        if (!isDeep) {\n          return copyArray(value, result);\n        }\n      } else {\n        var tag = getTag(value),\n            isFunc = tag == funcTag || tag == genTag;\n\n        if (isBuffer(value)) {\n          return cloneBuffer(value, isDeep);\n        }\n        if (tag == objectTag || tag == argsTag || (isFunc && !object)) {\n          result = (isFlat || isFunc) ? {} : initCloneObject(value);\n          if (!isDeep) {\n            return isFlat\n              ? copySymbolsIn(value, baseAssignIn(result, value))\n              : copySymbols(value, baseAssign(result, value));\n          }\n        } else {\n          if (!cloneableTags[tag]) {\n            return object ? value : {};\n          }\n          result = initCloneByTag(value, tag, isDeep);\n        }\n      }\n      // Check for circular references and return its corresponding clone.\n      stack || (stack = new Stack);\n      var stacked = stack.get(value);\n      if (stacked) {\n        return stacked;\n      }\n      stack.set(value, result);\n\n      if (isSet(value)) {\n        value.forEach(function(subValue) {\n          result.add(baseClone(subValue, bitmask, customizer, subValue, value, stack));\n        });\n      } else if (isMap(value)) {\n        value.forEach(function(subValue, key) {\n          result.set(key, baseClone(subValue, bitmask, customizer, key, value, stack));\n        });\n      }\n\n      var keysFunc = isFull\n        ? (isFlat ? getAllKeysIn : getAllKeys)\n        : (isFlat ? keysIn : keys);\n\n      var props = isArr ? undefined : keysFunc(value);\n      arrayEach(props || value, function(subValue, key) {\n        if (props) {\n          key = subValue;\n          subValue = value[key];\n        }\n        // Recursively populate clone (susceptible to call stack limits).\n        assignValue(result, key, baseClone(subValue, bitmask, customizer, key, value, stack));\n      });\n      return result;\n    }\n\n    /**\n     * The base implementation of `_.conforms` which doesn't clone `source`.\n     *\n     * @private\n     * @param {Object} source The object of property predicates to conform to.\n     * @returns {Function} Returns the new spec function.\n     */\n    function baseConforms(source) {\n      var props = keys(source);\n      return function(object) {\n        return baseConformsTo(object, source, props);\n      };\n    }\n\n    /**\n     * The base implementation of `_.conformsTo` which accepts `props` to check.\n     *\n     * @private\n     * @param {Object} object The object to inspect.\n     * @param {Object} source The object of property predicates to conform to.\n     * @returns {boolean} Returns `true` if `object` conforms, else `false`.\n     */\n    function baseConformsTo(object, source, props) {\n      var length = props.length;\n      if (object == null) {\n        return !length;\n      }\n      object = Object(object);\n      while (length--) {\n        var key = props[length],\n            predicate = source[key],\n            value = object[key];\n\n        if ((value === undefined && !(key in object)) || !predicate(value)) {\n          return false;\n        }\n      }\n      return true;\n    }\n\n    /**\n     * The base implementation of `_.delay` and `_.defer` which accepts `args`\n     * to provide to `func`.\n     *\n     * @private\n     * @param {Function} func The function to delay.\n     * @param {number} wait The number of milliseconds to delay invocation.\n     * @param {Array} args The arguments to provide to `func`.\n     * @returns {number|Object} Returns the timer id or timeout object.\n     */\n    function baseDelay(func, wait, args) {\n      if (typeof func != 'function') {\n        throw new TypeError(FUNC_ERROR_TEXT);\n      }\n      return setTimeout(function() { func.apply(undefined, args); }, wait);\n    }\n\n    /**\n     * The base implementation of methods like `_.difference` without support\n     * for excluding multiple arrays or iteratee shorthands.\n     *\n     * @private\n     * @param {Array} array The array to inspect.\n     * @param {Array} values The values to exclude.\n     * @param {Function} [iteratee] The iteratee invoked per element.\n     * @param {Function} [comparator] The comparator invoked per element.\n     * @returns {Array} Returns the new array of filtered values.\n     */\n    function baseDifference(array, values, iteratee, comparator) {\n      var index = -1,\n          includes = arrayIncludes,\n          isCommon = true,\n          length = array.length,\n          result = [],\n          valuesLength = values.length;\n\n      if (!length) {\n        return result;\n      }\n      if (iteratee) {\n        values = arrayMap(values, baseUnary(iteratee));\n      }\n      if (comparator) {\n        includes = arrayIncludesWith;\n        isCommon = false;\n      }\n      else if (values.length >= LARGE_ARRAY_SIZE) {\n        includes = cacheHas;\n        isCommon = false;\n        values = new SetCache(values);\n      }\n      outer:\n      while (++index < length) {\n        var value = array[index],\n            computed = iteratee == null ? value : iteratee(value);\n\n        value = (comparator || value !== 0) ? value : 0;\n        if (isCommon && computed === computed) {\n          var valuesIndex = valuesLength;\n          while (valuesIndex--) {\n            if (values[valuesIndex] === computed) {\n              continue outer;\n            }\n          }\n          result.push(value);\n        }\n        else if (!includes(values, computed, comparator)) {\n          result.push(value);\n        }\n      }\n      return result;\n    }\n\n    /**\n     * The base implementation of `_.forEach` without support for iteratee shorthands.\n     *\n     * @private\n     * @param {Array|Object} collection The collection to iterate over.\n     * @param {Function} iteratee The function invoked per iteration.\n     * @returns {Array|Object} Returns `collection`.\n     */\n    var baseEach = createBaseEach(baseForOwn);\n\n    /**\n     * The base implementation of `_.forEachRight` without support for iteratee shorthands.\n     *\n     * @private\n     * @param {Array|Object} collection The collection to iterate over.\n     * @param {Function} iteratee The function invoked per iteration.\n     * @returns {Array|Object} Returns `collection`.\n     */\n    var baseEachRight = createBaseEach(baseForOwnRight, true);\n\n    /**\n     * The base implementation of `_.every` without support for iteratee shorthands.\n     *\n     * @private\n     * @param {Array|Object} collection The collection to iterate over.\n     * @param {Function} predicate The function invoked per iteration.\n     * @returns {boolean} Returns `true` if all elements pass the predicate check,\n     *  else `false`\n     */\n    function baseEvery(collection, predicate) {\n      var result = true;\n      baseEach(collection, function(value, index, collection) {\n        result = !!predicate(value, index, collection);\n        return result;\n      });\n      return result;\n    }\n\n    /**\n     * The base implementation of methods like `_.max` and `_.min` which accepts a\n     * `comparator` to determine the extremum value.\n     *\n     * @private\n     * @param {Array} array The array to iterate over.\n     * @param {Function} iteratee The iteratee invoked per iteration.\n     * @param {Function} comparator The comparator used to compare values.\n     * @returns {*} Returns the extremum value.\n     */\n    function baseExtremum(array, iteratee, comparator) {\n      var index = -1,\n          length = array.length;\n\n      while (++index < length) {\n        var value = array[index],\n            current = iteratee(value);\n\n        if (current != null && (computed === undefined\n              ? (current === current && !isSymbol(current))\n              : comparator(current, computed)\n            )) {\n          var computed = current,\n              result = value;\n        }\n      }\n      return result;\n    }\n\n    /**\n     * The base implementation of `_.fill` without an iteratee call guard.\n     *\n     * @private\n     * @param {Array} array The array to fill.\n     * @param {*} value The value to fill `array` with.\n     * @param {number} [start=0] The start position.\n     * @param {number} [end=array.length] The end position.\n     * @returns {Array} Returns `array`.\n     */\n    function baseFill(array, value, start, end) {\n      var length = array.length;\n\n      start = toInteger(start);\n      if (start < 0) {\n        start = -start > length ? 0 : (length + start);\n      }\n      end = (end === undefined || end > length) ? length : toInteger(end);\n      if (end < 0) {\n        end += length;\n      }\n      end = start > end ? 0 : toLength(end);\n      while (start < end) {\n        array[start++] = value;\n      }\n      return array;\n    }\n\n    /**\n     * The base implementation of `_.filter` without support for iteratee shorthands.\n     *\n     * @private\n     * @param {Array|Object} collection The collection to iterate over.\n     * @param {Function} predicate The function invoked per iteration.\n     * @returns {Array} Returns the new filtered array.\n     */\n    function baseFilter(collection, predicate) {\n      var result = [];\n      baseEach(collection, function(value, index, collection) {\n        if (predicate(value, index, collection)) {\n          result.push(value);\n        }\n      });\n      return result;\n    }\n\n    /**\n     * The base implementation of `_.flatten` with support for restricting flattening.\n     *\n     * @private\n     * @param {Array} array The array to flatten.\n     * @param {number} depth The maximum recursion depth.\n     * @param {boolean} [predicate=isFlattenable] The function invoked per iteration.\n     * @param {boolean} [isStrict] Restrict to values that pass `predicate` checks.\n     * @param {Array} [result=[]] The initial result value.\n     * @returns {Array} Returns the new flattened array.\n     */\n    function baseFlatten(array, depth, predicate, isStrict, result) {\n      var index = -1,\n          length = array.length;\n\n      predicate || (predicate = isFlattenable);\n      result || (result = []);\n\n      while (++index < length) {\n        var value = array[index];\n        if (depth > 0 && predicate(value)) {\n          if (depth > 1) {\n            // Recursively flatten arrays (susceptible to call stack limits).\n            baseFlatten(value, depth - 1, predicate, isStrict, result);\n          } else {\n            arrayPush(result, value);\n          }\n        } else if (!isStrict) {\n          result[result.length] = value;\n        }\n      }\n      return result;\n    }\n\n    /**\n     * The base implementation of `baseForOwn` which iterates over `object`\n     * properties returned by `keysFunc` and invokes `iteratee` for each property.\n     * Iteratee functions may exit iteration early by explicitly returning `false`.\n     *\n     * @private\n     * @param {Object} object The object to iterate over.\n     * @param {Function} iteratee The function invoked per iteration.\n     * @param {Function} keysFunc The function to get the keys of `object`.\n     * @returns {Object} Returns `object`.\n     */\n    var baseFor = createBaseFor();\n\n    /**\n     * This function is like `baseFor` except that it iterates over properties\n     * in the opposite order.\n     *\n     * @private\n     * @param {Object} object The object to iterate over.\n     * @param {Function} iteratee The function invoked per iteration.\n     * @param {Function} keysFunc The function to get the keys of `object`.\n     * @returns {Object} Returns `object`.\n     */\n    var baseForRight = createBaseFor(true);\n\n    /**\n     * The base implementation of `_.forOwn` without support for iteratee shorthands.\n     *\n     * @private\n     * @param {Object} object The object to iterate over.\n     * @param {Function} iteratee The function invoked per iteration.\n     * @returns {Object} Returns `object`.\n     */\n    function baseForOwn(object, iteratee) {\n      return object && baseFor(object, iteratee, keys);\n    }\n\n    /**\n     * The base implementation of `_.forOwnRight` without support for iteratee shorthands.\n     *\n     * @private\n     * @param {Object} object The object to iterate over.\n     * @param {Function} iteratee The function invoked per iteration.\n     * @returns {Object} Returns `object`.\n     */\n    function baseForOwnRight(object, iteratee) {\n      return object && baseForRight(object, iteratee, keys);\n    }\n\n    /**\n     * The base implementation of `_.functions` which creates an array of\n     * `object` function property names filtered from `props`.\n     *\n     * @private\n     * @param {Object} object The object to inspect.\n     * @param {Array} props The property names to filter.\n     * @returns {Array} Returns the function names.\n     */\n    function baseFunctions(object, props) {\n      return arrayFilter(props, function(key) {\n        return isFunction(object[key]);\n      });\n    }\n\n    /**\n     * The base implementation of `_.get` without support for default values.\n     *\n     * @private\n     * @param {Object} object The object to query.\n     * @param {Array|string} path The path of the property to get.\n     * @returns {*} Returns the resolved value.\n     */\n    function baseGet(object, path) {\n      path = castPath(path, object);\n\n      var index = 0,\n          length = path.length;\n\n      while (object != null && index < length) {\n        object = object[toKey(path[index++])];\n      }\n      return (index && index == length) ? object : undefined;\n    }\n\n    /**\n     * The base implementation of `getAllKeys` and `getAllKeysIn` which uses\n     * `keysFunc` and `symbolsFunc` to get the enumerable property names and\n     * symbols of `object`.\n     *\n     * @private\n     * @param {Object} object The object to query.\n     * @param {Function} keysFunc The function to get the keys of `object`.\n     * @param {Function} symbolsFunc The function to get the symbols of `object`.\n     * @returns {Array} Returns the array of property names and symbols.\n     */\n    function baseGetAllKeys(object, keysFunc, symbolsFunc) {\n      var result = keysFunc(object);\n      return isArray(object) ? result : arrayPush(result, symbolsFunc(object));\n    }\n\n    /**\n     * The base implementation of `getTag` without fallbacks for buggy environments.\n     *\n     * @private\n     * @param {*} value The value to query.\n     * @returns {string} Returns the `toStringTag`.\n     */\n    function baseGetTag(value) {\n      if (value == null) {\n        return value === undefined ? undefinedTag : nullTag;\n      }\n      return (symToStringTag && symToStringTag in Object(value))\n        ? getRawTag(value)\n        : objectToString(value);\n    }\n\n    /**\n     * The base implementation of `_.gt` which doesn't coerce arguments.\n     *\n     * @private\n     * @param {*} value The value to compare.\n     * @param {*} other The other value to compare.\n     * @returns {boolean} Returns `true` if `value` is greater than `other`,\n     *  else `false`.\n     */\n    function baseGt(value, other) {\n      return value > other;\n    }\n\n    /**\n     * The base implementation of `_.has` without support for deep paths.\n     *\n     * @private\n     * @param {Object} [object] The object to query.\n     * @param {Array|string} key The key to check.\n     * @returns {boolean} Returns `true` if `key` exists, else `false`.\n     */\n    function baseHas(object, key) {\n      return object != null && hasOwnProperty.call(object, key);\n    }\n\n    /**\n     * The base implementation of `_.hasIn` without support for deep paths.\n     *\n     * @private\n     * @param {Object} [object] The object to query.\n     * @param {Array|string} key The key to check.\n     * @returns {boolean} Returns `true` if `key` exists, else `false`.\n     */\n    function baseHasIn(object, key) {\n      return object != null && key in Object(object);\n    }\n\n    /**\n     * The base implementation of `_.inRange` which doesn't coerce arguments.\n     *\n     * @private\n     * @param {number} number The number to check.\n     * @param {number} start The start of the range.\n     * @param {number} end The end of the range.\n     * @returns {boolean} Returns `true` if `number` is in the range, else `false`.\n     */\n    function baseInRange(number, start, end) {\n      return number >= nativeMin(start, end) && number < nativeMax(start, end);\n    }\n\n    /**\n     * The base implementation of methods like `_.intersection`, without support\n     * for iteratee shorthands, that accepts an array of arrays to inspect.\n     *\n     * @private\n     * @param {Array} arrays The arrays to inspect.\n     * @param {Function} [iteratee] The iteratee invoked per element.\n     * @param {Function} [comparator] The comparator invoked per element.\n     * @returns {Array} Returns the new array of shared values.\n     */\n    function baseIntersection(arrays, iteratee, comparator) {\n      var includes = comparator ? arrayIncludesWith : arrayIncludes,\n          length = arrays[0].length,\n          othLength = arrays.length,\n          othIndex = othLength,\n          caches = Array(othLength),\n          maxLength = Infinity,\n          result = [];\n\n      while (othIndex--) {\n        var array = arrays[othIndex];\n        if (othIndex && iteratee) {\n          array = arrayMap(array, baseUnary(iteratee));\n        }\n        maxLength = nativeMin(array.length, maxLength);\n        caches[othIndex] = !comparator && (iteratee || (length >= 120 && array.length >= 120))\n          ? new SetCache(othIndex && array)\n          : undefined;\n      }\n      array = arrays[0];\n\n      var index = -1,\n          seen = caches[0];\n\n      outer:\n      while (++index < length && result.length < maxLength) {\n        var value = array[index],\n            computed = iteratee ? iteratee(value) : value;\n\n        value = (comparator || value !== 0) ? value : 0;\n        if (!(seen\n              ? cacheHas(seen, computed)\n              : includes(result, computed, comparator)\n            )) {\n          othIndex = othLength;\n          while (--othIndex) {\n            var cache = caches[othIndex];\n            if (!(cache\n                  ? cacheHas(cache, computed)\n                  : includes(arrays[othIndex], computed, comparator))\n                ) {\n              continue outer;\n            }\n          }\n          if (seen) {\n            seen.push(computed);\n          }\n          result.push(value);\n        }\n      }\n      return result;\n    }\n\n    /**\n     * The base implementation of `_.invert` and `_.invertBy` which inverts\n     * `object` with values transformed by `iteratee` and set by `setter`.\n     *\n     * @private\n     * @param {Object} object The object to iterate over.\n     * @param {Function} setter The function to set `accumulator` values.\n     * @param {Function} iteratee The iteratee to transform values.\n     * @param {Object} accumulator The initial inverted object.\n     * @returns {Function} Returns `accumulator`.\n     */\n    function baseInverter(object, setter, iteratee, accumulator) {\n      baseForOwn(object, function(value, key, object) {\n        setter(accumulator, iteratee(value), key, object);\n      });\n      return accumulator;\n    }\n\n    /**\n     * The base implementation of `_.invoke` without support for individual\n     * method arguments.\n     *\n     * @private\n     * @param {Object} object The object to query.\n     * @param {Array|string} path The path of the method to invoke.\n     * @param {Array} args The arguments to invoke the method with.\n     * @returns {*} Returns the result of the invoked method.\n     */\n    function baseInvoke(object, path, args) {\n      path = castPath(path, object);\n      object = parent(object, path);\n      var func = object == null ? object : object[toKey(last(path))];\n      return func == null ? undefined : apply(func, object, args);\n    }\n\n    /**\n     * The base implementation of `_.isArguments`.\n     *\n     * @private\n     * @param {*} value The value to check.\n     * @returns {boolean} Returns `true` if `value` is an `arguments` object,\n     */\n    function baseIsArguments(value) {\n      return isObjectLike(value) && baseGetTag(value) == argsTag;\n    }\n\n    /**\n     * The base implementation of `_.isArrayBuffer` without Node.js optimizations.\n     *\n     * @private\n     * @param {*} value The value to check.\n     * @returns {boolean} Returns `true` if `value` is an array buffer, else `false`.\n     */\n    function baseIsArrayBuffer(value) {\n      return isObjectLike(value) && baseGetTag(value) == arrayBufferTag;\n    }\n\n    /**\n     * The base implementation of `_.isDate` without Node.js optimizations.\n     *\n     * @private\n     * @param {*} value The value to check.\n     * @returns {boolean} Returns `true` if `value` is a date object, else `false`.\n     */\n    function baseIsDate(value) {\n      return isObjectLike(value) && baseGetTag(value) == dateTag;\n    }\n\n    /**\n     * The base implementation of `_.isEqual` which supports partial comparisons\n     * and tracks traversed objects.\n     *\n     * @private\n     * @param {*} value The value to compare.\n     * @param {*} other The other value to compare.\n     * @param {boolean} bitmask The bitmask flags.\n     *  1 - Unordered comparison\n     *  2 - Partial comparison\n     * @param {Function} [customizer] The function to customize comparisons.\n     * @param {Object} [stack] Tracks traversed `value` and `other` objects.\n     * @returns {boolean} Returns `true` if the values are equivalent, else `false`.\n     */\n    function baseIsEqual(value, other, bitmask, customizer, stack) {\n      if (value === other) {\n        return true;\n      }\n      if (value == null || other == null || (!isObjectLike(value) && !isObjectLike(other))) {\n        return value !== value && other !== other;\n      }\n      return baseIsEqualDeep(value, other, bitmask, customizer, baseIsEqual, stack);\n    }\n\n    /**\n     * A specialized version of `baseIsEqual` for arrays and objects which performs\n     * deep comparisons and tracks traversed objects enabling objects with circular\n     * references to be compared.\n     *\n     * @private\n     * @param {Object} object The object to compare.\n     * @param {Object} other The other object to compare.\n     * @param {number} bitmask The bitmask flags. See `baseIsEqual` for more details.\n     * @param {Function} customizer The function to customize comparisons.\n     * @param {Function} equalFunc The function to determine equivalents of values.\n     * @param {Object} [stack] Tracks traversed `object` and `other` objects.\n     * @returns {boolean} Returns `true` if the objects are equivalent, else `false`.\n     */\n    function baseIsEqualDeep(object, other, bitmask, customizer, equalFunc, stack) {\n      var objIsArr = isArray(object),\n          othIsArr = isArray(other),\n          objTag = objIsArr ? arrayTag : getTag(object),\n          othTag = othIsArr ? arrayTag : getTag(other);\n\n      objTag = objTag == argsTag ? objectTag : objTag;\n      othTag = othTag == argsTag ? objectTag : othTag;\n\n      var objIsObj = objTag == objectTag,\n          othIsObj = othTag == objectTag,\n          isSameTag = objTag == othTag;\n\n      if (isSameTag && isBuffer(object)) {\n        if (!isBuffer(other)) {\n          return false;\n        }\n        objIsArr = true;\n        objIsObj = false;\n      }\n      if (isSameTag && !objIsObj) {\n        stack || (stack = new Stack);\n        return (objIsArr || isTypedArray(object))\n          ? equalArrays(object, other, bitmask, customizer, equalFunc, stack)\n          : equalByTag(object, other, objTag, bitmask, customizer, equalFunc, stack);\n      }\n      if (!(bitmask & COMPARE_PARTIAL_FLAG)) {\n        var objIsWrapped = objIsObj && hasOwnProperty.call(object, '__wrapped__'),\n            othIsWrapped = othIsObj && hasOwnProperty.call(other, '__wrapped__');\n\n        if (objIsWrapped || othIsWrapped) {\n          var objUnwrapped = objIsWrapped ? object.value() : object,\n              othUnwrapped = othIsWrapped ? other.value() : other;\n\n          stack || (stack = new Stack);\n          return equalFunc(objUnwrapped, othUnwrapped, bitmask, customizer, stack);\n        }\n      }\n      if (!isSameTag) {\n        return false;\n      }\n      stack || (stack = new Stack);\n      return equalObjects(object, other, bitmask, customizer, equalFunc, stack);\n    }\n\n    /**\n     * The base implementation of `_.isMap` without Node.js optimizations.\n     *\n     * @private\n     * @param {*} value The value to check.\n     * @returns {boolean} Returns `true` if `value` is a map, else `false`.\n     */\n    function baseIsMap(value) {\n      return isObjectLike(value) && getTag(value) == mapTag;\n    }\n\n    /**\n     * The base implementation of `_.isMatch` without support for iteratee shorthands.\n     *\n     * @private\n     * @param {Object} object The object to inspect.\n     * @param {Object} source The object of property values to match.\n     * @param {Array} matchData The property names, values, and compare flags to match.\n     * @param {Function} [customizer] The function to customize comparisons.\n     * @returns {boolean} Returns `true` if `object` is a match, else `false`.\n     */\n    function baseIsMatch(object, source, matchData, customizer) {\n      var index = matchData.length,\n          length = index,\n          noCustomizer = !customizer;\n\n      if (object == null) {\n        return !length;\n      }\n      object = Object(object);\n      while (index--) {\n        var data = matchData[index];\n        if ((noCustomizer && data[2])\n              ? data[1] !== object[data[0]]\n              : !(data[0] in object)\n            ) {\n          return false;\n        }\n      }\n      while (++index < length) {\n        data = matchData[index];\n        var key = data[0],\n            objValue = object[key],\n            srcValue = data[1];\n\n        if (noCustomizer && data[2]) {\n          if (objValue === undefined && !(key in object)) {\n            return false;\n          }\n        } else {\n          var stack = new Stack;\n          if (customizer) {\n            var result = customizer(objValue, srcValue, key, object, source, stack);\n          }\n          if (!(result === undefined\n                ? baseIsEqual(srcValue, objValue, COMPARE_PARTIAL_FLAG | COMPARE_UNORDERED_FLAG, customizer, stack)\n                : result\n              )) {\n            return false;\n          }\n        }\n      }\n      return true;\n    }\n\n    /**\n     * The base implementation of `_.isNative` without bad shim checks.\n     *\n     * @private\n     * @param {*} value The value to check.\n     * @returns {boolean} Returns `true` if `value` is a native function,\n     *  else `false`.\n     */\n    function baseIsNative(value) {\n      if (!isObject(value) || isMasked(value)) {\n        return false;\n      }\n      var pattern = isFunction(value) ? reIsNative : reIsHostCtor;\n      return pattern.test(toSource(value));\n    }\n\n    /**\n     * The base implementation of `_.isRegExp` without Node.js optimizations.\n     *\n     * @private\n     * @param {*} value The value to check.\n     * @returns {boolean} Returns `true` if `value` is a regexp, else `false`.\n     */\n    function baseIsRegExp(value) {\n      return isObjectLike(value) && baseGetTag(value) == regexpTag;\n    }\n\n    /**\n     * The base implementation of `_.isSet` without Node.js optimizations.\n     *\n     * @private\n     * @param {*} value The value to check.\n     * @returns {boolean} Returns `true` if `value` is a set, else `false`.\n     */\n    function baseIsSet(value) {\n      return isObjectLike(value) && getTag(value) == setTag;\n    }\n\n    /**\n     * The base implementation of `_.isTypedArray` without Node.js optimizations.\n     *\n     * @private\n     * @param {*} value The value to check.\n     * @returns {boolean} Returns `true` if `value` is a typed array, else `false`.\n     */\n    function baseIsTypedArray(value) {\n      return isObjectLike(value) &&\n        isLength(value.length) && !!typedArrayTags[baseGetTag(value)];\n    }\n\n    /**\n     * The base implementation of `_.iteratee`.\n     *\n     * @private\n     * @param {*} [value=_.identity] The value to convert to an iteratee.\n     * @returns {Function} Returns the iteratee.\n     */\n    function baseIteratee(value) {\n      // Don't store the `typeof` result in a variable to avoid a JIT bug in Safari 9.\n      // See https://bugs.webkit.org/show_bug.cgi?id=156034 for more details.\n      if (typeof value == 'function') {\n        return value;\n      }\n      if (value == null) {\n        return identity;\n      }\n      if (typeof value == 'object') {\n        return isArray(value)\n          ? baseMatchesProperty(value[0], value[1])\n          : baseMatches(value);\n      }\n      return property(value);\n    }\n\n    /**\n     * The base implementation of `_.keys` which doesn't treat sparse arrays as dense.\n     *\n     * @private\n     * @param {Object} object The object to query.\n     * @returns {Array} Returns the array of property names.\n     */\n    function baseKeys(object) {\n      if (!isPrototype(object)) {\n        return nativeKeys(object);\n      }\n      var result = [];\n      for (var key in Object(object)) {\n        if (hasOwnProperty.call(object, key) && key != 'constructor') {\n          result.push(key);\n        }\n      }\n      return result;\n    }\n\n    /**\n     * The base implementation of `_.keysIn` which doesn't treat sparse arrays as dense.\n     *\n     * @private\n     * @param {Object} object The object to query.\n     * @returns {Array} Returns the array of property names.\n     */\n    function baseKeysIn(object) {\n      if (!isObject(object)) {\n        return nativeKeysIn(object);\n      }\n      var isProto = isPrototype(object),\n          result = [];\n\n      for (var key in object) {\n        if (!(key == 'constructor' && (isProto || !hasOwnProperty.call(object, key)))) {\n          result.push(key);\n        }\n      }\n      return result;\n    }\n\n    /**\n     * The base implementation of `_.lt` which doesn't coerce arguments.\n     *\n     * @private\n     * @param {*} value The value to compare.\n     * @param {*} other The other value to compare.\n     * @returns {boolean} Returns `true` if `value` is less than `other`,\n     *  else `false`.\n     */\n    function baseLt(value, other) {\n      return value < other;\n    }\n\n    /**\n     * The base implementation of `_.map` without support for iteratee shorthands.\n     *\n     * @private\n     * @param {Array|Object} collection The collection to iterate over.\n     * @param {Function} iteratee The function invoked per iteration.\n     * @returns {Array} Returns the new mapped array.\n     */\n    function baseMap(collection, iteratee) {\n      var index = -1,\n          result = isArrayLike(collection) ? Array(collection.length) : [];\n\n      baseEach(collection, function(value, key, collection) {\n        result[++index] = iteratee(value, key, collection);\n      });\n      return result;\n    }\n\n    /**\n     * The base implementation of `_.matches` which doesn't clone `source`.\n     *\n     * @private\n     * @param {Object} source The object of property values to match.\n     * @returns {Function} Returns the new spec function.\n     */\n    function baseMatches(source) {\n      var matchData = getMatchData(source);\n      if (matchData.length == 1 && matchData[0][2]) {\n        return matchesStrictComparable(matchData[0][0], matchData[0][1]);\n      }\n      return function(object) {\n        return object === source || baseIsMatch(object, source, matchData);\n      };\n    }\n\n    /**\n     * The base implementation of `_.matchesProperty` which doesn't clone `srcValue`.\n     *\n     * @private\n     * @param {string} path The path of the property to get.\n     * @param {*} srcValue The value to match.\n     * @returns {Function} Returns the new spec function.\n     */\n    function baseMatchesProperty(path, srcValue) {\n      if (isKey(path) && isStrictComparable(srcValue)) {\n        return matchesStrictComparable(toKey(path), srcValue);\n      }\n      return function(object) {\n        var objValue = get(object, path);\n        return (objValue === undefined && objValue === srcValue)\n          ? hasIn(object, path)\n          : baseIsEqual(srcValue, objValue, COMPARE_PARTIAL_FLAG | COMPARE_UNORDERED_FLAG);\n      };\n    }\n\n    /**\n     * The base implementation of `_.merge` without support for multiple sources.\n     *\n     * @private\n     * @param {Object} object The destination object.\n     * @param {Object} source The source object.\n     * @param {number} srcIndex The index of `source`.\n     * @param {Function} [customizer] The function to customize merged values.\n     * @param {Object} [stack] Tracks traversed source values and their merged\n     *  counterparts.\n     */\n    function baseMerge(object, source, srcIndex, customizer, stack) {\n      if (object === source) {\n        return;\n      }\n      baseFor(source, function(srcValue, key) {\n        stack || (stack = new Stack);\n        if (isObject(srcValue)) {\n          baseMergeDeep(object, source, key, srcIndex, baseMerge, customizer, stack);\n        }\n        else {\n          var newValue = customizer\n            ? customizer(safeGet(object, key), srcValue, (key + ''), object, source, stack)\n            : undefined;\n\n          if (newValue === undefined) {\n            newValue = srcValue;\n          }\n          assignMergeValue(object, key, newValue);\n        }\n      }, keysIn);\n    }\n\n    /**\n     * A specialized version of `baseMerge` for arrays and objects which performs\n     * deep merges and tracks traversed objects enabling objects with circular\n     * references to be merged.\n     *\n     * @private\n     * @param {Object} object The destination object.\n     * @param {Object} source The source object.\n     * @param {string} key The key of the value to merge.\n     * @param {number} srcIndex The index of `source`.\n     * @param {Function} mergeFunc The function to merge values.\n     * @param {Function} [customizer] The function to customize assigned values.\n     * @param {Object} [stack] Tracks traversed source values and their merged\n     *  counterparts.\n     */\n    function baseMergeDeep(object, source, key, srcIndex, mergeFunc, customizer, stack) {\n      var objValue = safeGet(object, key),\n          srcValue = safeGet(source, key),\n          stacked = stack.get(srcValue);\n\n      if (stacked) {\n        assignMergeValue(object, key, stacked);\n        return;\n      }\n      var newValue = customizer\n        ? customizer(objValue, srcValue, (key + ''), object, source, stack)\n        : undefined;\n\n      var isCommon = newValue === undefined;\n\n      if (isCommon) {\n        var isArr = isArray(srcValue),\n            isBuff = !isArr && isBuffer(srcValue),\n            isTyped = !isArr && !isBuff && isTypedArray(srcValue);\n\n        newValue = srcValue;\n        if (isArr || isBuff || isTyped) {\n          if (isArray(objValue)) {\n            newValue = objValue;\n          }\n          else if (isArrayLikeObject(objValue)) {\n            newValue = copyArray(objValue);\n          }\n          else if (isBuff) {\n            isCommon = false;\n            newValue = cloneBuffer(srcValue, true);\n          }\n          else if (isTyped) {\n            isCommon = false;\n            newValue = cloneTypedArray(srcValue, true);\n          }\n          else {\n            newValue = [];\n          }\n        }\n        else if (isPlainObject(srcValue) || isArguments(srcValue)) {\n          newValue = objValue;\n          if (isArguments(objValue)) {\n            newValue = toPlainObject(objValue);\n          }\n          else if (!isObject(objValue) || isFunction(objValue)) {\n            newValue = initCloneObject(srcValue);\n          }\n        }\n        else {\n          isCommon = false;\n        }\n      }\n      if (isCommon) {\n        // Recursively merge objects and arrays (susceptible to call stack limits).\n        stack.set(srcValue, newValue);\n        mergeFunc(newValue, srcValue, srcIndex, customizer, stack);\n        stack['delete'](srcValue);\n      }\n      assignMergeValue(object, key, newValue);\n    }\n\n    /**\n     * The base implementation of `_.nth` which doesn't coerce arguments.\n     *\n     * @private\n     * @param {Array} array The array to query.\n     * @param {number} n The index of the element to return.\n     * @returns {*} Returns the nth element of `array`.\n     */\n    function baseNth(array, n) {\n      var length = array.length;\n      if (!length) {\n        return;\n      }\n      n += n < 0 ? length : 0;\n      return isIndex(n, length) ? array[n] : undefined;\n    }\n\n    /**\n     * The base implementation of `_.orderBy` without param guards.\n     *\n     * @private\n     * @param {Array|Object} collection The collection to iterate over.\n     * @param {Function[]|Object[]|string[]} iteratees The iteratees to sort by.\n     * @param {string[]} orders The sort orders of `iteratees`.\n     * @returns {Array} Returns the new sorted array.\n     */\n    function baseOrderBy(collection, iteratees, orders) {\n      if (iteratees.length) {\n        iteratees = arrayMap(iteratees, function(iteratee) {\n          if (isArray(iteratee)) {\n            return function(value) {\n              return baseGet(value, iteratee.length === 1 ? iteratee[0] : iteratee);\n            }\n          }\n          return iteratee;\n        });\n      } else {\n        iteratees = [identity];\n      }\n\n      var index = -1;\n      iteratees = arrayMap(iteratees, baseUnary(getIteratee()));\n\n      var result = baseMap(collection, function(value, key, collection) {\n        var criteria = arrayMap(iteratees, function(iteratee) {\n          return iteratee(value);\n        });\n        return { 'criteria': criteria, 'index': ++index, 'value': value };\n      });\n\n      return baseSortBy(result, function(object, other) {\n        return compareMultiple(object, other, orders);\n      });\n    }\n\n    /**\n     * The base implementation of `_.pick` without support for individual\n     * property identifiers.\n     *\n     * @private\n     * @param {Object} object The source object.\n     * @param {string[]} paths The property paths to pick.\n     * @returns {Object} Returns the new object.\n     */\n    function basePick(object, paths) {\n      return basePickBy(object, paths, function(value, path) {\n        return hasIn(object, path);\n      });\n    }\n\n    /**\n     * The base implementation of  `_.pickBy` without support for iteratee shorthands.\n     *\n     * @private\n     * @param {Object} object The source object.\n     * @param {string[]} paths The property paths to pick.\n     * @param {Function} predicate The function invoked per property.\n     * @returns {Object} Returns the new object.\n     */\n    function basePickBy(object, paths, predicate) {\n      var index = -1,\n          length = paths.length,\n          result = {};\n\n      while (++index < length) {\n        var path = paths[index],\n            value = baseGet(object, path);\n\n        if (predicate(value, path)) {\n          baseSet(result, castPath(path, object), value);\n        }\n      }\n      return result;\n    }\n\n    /**\n     * A specialized version of `baseProperty` which supports deep paths.\n     *\n     * @private\n     * @param {Array|string} path The path of the property to get.\n     * @returns {Function} Returns the new accessor function.\n     */\n    function basePropertyDeep(path) {\n      return function(object) {\n        return baseGet(object, path);\n      };\n    }\n\n    /**\n     * The base implementation of `_.pullAllBy` without support for iteratee\n     * shorthands.\n     *\n     * @private\n     * @param {Array} array The array to modify.\n     * @param {Array} values The values to remove.\n     * @param {Function} [iteratee] The iteratee invoked per element.\n     * @param {Function} [comparator] The comparator invoked per element.\n     * @returns {Array} Returns `array`.\n     */\n    function basePullAll(array, values, iteratee, comparator) {\n      var indexOf = comparator ? baseIndexOfWith : baseIndexOf,\n          index = -1,\n          length = values.length,\n          seen = array;\n\n      if (array === values) {\n        values = copyArray(values);\n      }\n      if (iteratee) {\n        seen = arrayMap(array, baseUnary(iteratee));\n      }\n      while (++index < length) {\n        var fromIndex = 0,\n            value = values[index],\n            computed = iteratee ? iteratee(value) : value;\n\n        while ((fromIndex = indexOf(seen, computed, fromIndex, comparator)) > -1) {\n          if (seen !== array) {\n            splice.call(seen, fromIndex, 1);\n          }\n          splice.call(array, fromIndex, 1);\n        }\n      }\n      return array;\n    }\n\n    /**\n     * The base implementation of `_.pullAt` without support for individual\n     * indexes or capturing the removed elements.\n     *\n     * @private\n     * @param {Array} array The array to modify.\n     * @param {number[]} indexes The indexes of elements to remove.\n     * @returns {Array} Returns `array`.\n     */\n    function basePullAt(array, indexes) {\n      var length = array ? indexes.length : 0,\n          lastIndex = length - 1;\n\n      while (length--) {\n        var index = indexes[length];\n        if (length == lastIndex || index !== previous) {\n          var previous = index;\n          if (isIndex(index)) {\n            splice.call(array, index, 1);\n          } else {\n            baseUnset(array, index);\n          }\n        }\n      }\n      return array;\n    }\n\n    /**\n     * The base implementation of `_.random` without support for returning\n     * floating-point numbers.\n     *\n     * @private\n     * @param {number} lower The lower bound.\n     * @param {number} upper The upper bound.\n     * @returns {number} Returns the random number.\n     */\n    function baseRandom(lower, upper) {\n      return lower + nativeFloor(nativeRandom() * (upper - lower + 1));\n    }\n\n    /**\n     * The base implementation of `_.range` and `_.rangeRight` which doesn't\n     * coerce arguments.\n     *\n     * @private\n     * @param {number} start The start of the range.\n     * @param {number} end The end of the range.\n     * @param {number} step The value to increment or decrement by.\n     * @param {boolean} [fromRight] Specify iterating from right to left.\n     * @returns {Array} Returns the range of numbers.\n     */\n    function baseRange(start, end, step, fromRight) {\n      var index = -1,\n          length = nativeMax(nativeCeil((end - start) / (step || 1)), 0),\n          result = Array(length);\n\n      while (length--) {\n        result[fromRight ? length : ++index] = start;\n        start += step;\n      }\n      return result;\n    }\n\n    /**\n     * The base implementation of `_.repeat` which doesn't coerce arguments.\n     *\n     * @private\n     * @param {string} string The string to repeat.\n     * @param {number} n The number of times to repeat the string.\n     * @returns {string} Returns the repeated string.\n     */\n    function baseRepeat(string, n) {\n      var result = '';\n      if (!string || n < 1 || n > MAX_SAFE_INTEGER) {\n        return result;\n      }\n      // Leverage the exponentiation by squaring algorithm for a faster repeat.\n      // See https://en.wikipedia.org/wiki/Exponentiation_by_squaring for more details.\n      do {\n        if (n % 2) {\n          result += string;\n        }\n        n = nativeFloor(n / 2);\n        if (n) {\n          string += string;\n        }\n      } while (n);\n\n      return result;\n    }\n\n    /**\n     * The base implementation of `_.rest` which doesn't validate or coerce arguments.\n     *\n     * @private\n     * @param {Function} func The function to apply a rest parameter to.\n     * @param {number} [start=func.length-1] The start position of the rest parameter.\n     * @returns {Function} Returns the new function.\n     */\n    function baseRest(func, start) {\n      return setToString(overRest(func, start, identity), func + '');\n    }\n\n    /**\n     * The base implementation of `_.sample`.\n     *\n     * @private\n     * @param {Array|Object} collection The collection to sample.\n     * @returns {*} Returns the random element.\n     */\n    function baseSample(collection) {\n      return arraySample(values(collection));\n    }\n\n    /**\n     * The base implementation of `_.sampleSize` without param guards.\n     *\n     * @private\n     * @param {Array|Object} collection The collection to sample.\n     * @param {number} n The number of elements to sample.\n     * @returns {Array} Returns the random elements.\n     */\n    function baseSampleSize(collection, n) {\n      var array = values(collection);\n      return shuffleSelf(array, baseClamp(n, 0, array.length));\n    }\n\n    /**\n     * The base implementation of `_.set`.\n     *\n     * @private\n     * @param {Object} object The object to modify.\n     * @param {Array|string} path The path of the property to set.\n     * @param {*} value The value to set.\n     * @param {Function} [customizer] The function to customize path creation.\n     * @returns {Object} Returns `object`.\n     */\n    function baseSet(object, path, value, customizer) {\n      if (!isObject(object)) {\n        return object;\n      }\n      path = castPath(path, object);\n\n      var index = -1,\n          length = path.length,\n          lastIndex = length - 1,\n          nested = object;\n\n      while (nested != null && ++index < length) {\n        var key = toKey(path[index]),\n            newValue = value;\n\n        if (key === '__proto__' || key === 'constructor' || key === 'prototype') {\n          return object;\n        }\n\n        if (index != lastIndex) {\n          var objValue = nested[key];\n          newValue = customizer ? customizer(objValue, key, nested) : undefined;\n          if (newValue === undefined) {\n            newValue = isObject(objValue)\n              ? objValue\n              : (isIndex(path[index + 1]) ? [] : {});\n          }\n        }\n        assignValue(nested, key, newValue);\n        nested = nested[key];\n      }\n      return object;\n    }\n\n    /**\n     * The base implementation of `setData` without support for hot loop shorting.\n     *\n     * @private\n     * @param {Function} func The function to associate metadata with.\n     * @param {*} data The metadata.\n     * @returns {Function} Returns `func`.\n     */\n    var baseSetData = !metaMap ? identity : function(func, data) {\n      metaMap.set(func, data);\n      return func;\n    };\n\n    /**\n     * The base implementation of `setToString` without support for hot loop shorting.\n     *\n     * @private\n     * @param {Function} func The function to modify.\n     * @param {Function} string The `toString` result.\n     * @returns {Function} Returns `func`.\n     */\n    var baseSetToString = !defineProperty ? identity : function(func, string) {\n      return defineProperty(func, 'toString', {\n        'configurable': true,\n        'enumerable': false,\n        'value': constant(string),\n        'writable': true\n      });\n    };\n\n    /**\n     * The base implementation of `_.shuffle`.\n     *\n     * @private\n     * @param {Array|Object} collection The collection to shuffle.\n     * @returns {Array} Returns the new shuffled array.\n     */\n    function baseShuffle(collection) {\n      return shuffleSelf(values(collection));\n    }\n\n    /**\n     * The base implementation of `_.slice` without an iteratee call guard.\n     *\n     * @private\n     * @param {Array} array The array to slice.\n     * @param {number} [start=0] The start position.\n     * @param {number} [end=array.length] The end position.\n     * @returns {Array} Returns the slice of `array`.\n     */\n    function baseSlice(array, start, end) {\n      var index = -1,\n          length = array.length;\n\n      if (start < 0) {\n        start = -start > length ? 0 : (length + start);\n      }\n      end = end > length ? length : end;\n      if (end < 0) {\n        end += length;\n      }\n      length = start > end ? 0 : ((end - start) >>> 0);\n      start >>>= 0;\n\n      var result = Array(length);\n      while (++index < length) {\n        result[index] = array[index + start];\n      }\n      return result;\n    }\n\n    /**\n     * The base implementation of `_.some` without support for iteratee shorthands.\n     *\n     * @private\n     * @param {Array|Object} collection The collection to iterate over.\n     * @param {Function} predicate The function invoked per iteration.\n     * @returns {boolean} Returns `true` if any element passes the predicate check,\n     *  else `false`.\n     */\n    function baseSome(collection, predicate) {\n      var result;\n\n      baseEach(collection, function(value, index, collection) {\n        result = predicate(value, index, collection);\n        return !result;\n      });\n      return !!result;\n    }\n\n    /**\n     * The base implementation of `_.sortedIndex` and `_.sortedLastIndex` which\n     * performs a binary search of `array` to determine the index at which `value`\n     * should be inserted into `array` in order to maintain its sort order.\n     *\n     * @private\n     * @param {Array} array The sorted array to inspect.\n     * @param {*} value The value to evaluate.\n     * @param {boolean} [retHighest] Specify returning the highest qualified index.\n     * @returns {number} Returns the index at which `value` should be inserted\n     *  into `array`.\n     */\n    function baseSortedIndex(array, value, retHighest) {\n      var low = 0,\n          high = array == null ? low : array.length;\n\n      if (typeof value == 'number' && value === value && high <= HALF_MAX_ARRAY_LENGTH) {\n        while (low < high) {\n          var mid = (low + high) >>> 1,\n              computed = array[mid];\n\n          if (computed !== null && !isSymbol(computed) &&\n              (retHighest ? (computed <= value) : (computed < value))) {\n            low = mid + 1;\n          } else {\n            high = mid;\n          }\n        }\n        return high;\n      }\n      return baseSortedIndexBy(array, value, identity, retHighest);\n    }\n\n    /**\n     * The base implementation of `_.sortedIndexBy` and `_.sortedLastIndexBy`\n     * which invokes `iteratee` for `value` and each element of `array` to compute\n     * their sort ranking. The iteratee is invoked with one argument; (value).\n     *\n     * @private\n     * @param {Array} array The sorted array to inspect.\n     * @param {*} value The value to evaluate.\n     * @param {Function} iteratee The iteratee invoked per element.\n     * @param {boolean} [retHighest] Specify returning the highest qualified index.\n     * @returns {number} Returns the index at which `value` should be inserted\n     *  into `array`.\n     */\n    function baseSortedIndexBy(array, value, iteratee, retHighest) {\n      var low = 0,\n          high = array == null ? 0 : array.length;\n      if (high === 0) {\n        return 0;\n      }\n\n      value = iteratee(value);\n      var valIsNaN = value !== value,\n          valIsNull = value === null,\n          valIsSymbol = isSymbol(value),\n          valIsUndefined = value === undefined;\n\n      while (low < high) {\n        var mid = nativeFloor((low + high) / 2),\n            computed = iteratee(array[mid]),\n            othIsDefined = computed !== undefined,\n            othIsNull = computed === null,\n            othIsReflexive = computed === computed,\n            othIsSymbol = isSymbol(computed);\n\n        if (valIsNaN) {\n          var setLow = retHighest || othIsReflexive;\n        } else if (valIsUndefined) {\n          setLow = othIsReflexive && (retHighest || othIsDefined);\n        } else if (valIsNull) {\n          setLow = othIsReflexive && othIsDefined && (retHighest || !othIsNull);\n        } else if (valIsSymbol) {\n          setLow = othIsReflexive && othIsDefined && !othIsNull && (retHighest || !othIsSymbol);\n        } else if (othIsNull || othIsSymbol) {\n          setLow = false;\n        } else {\n          setLow = retHighest ? (computed <= value) : (computed < value);\n        }\n        if (setLow) {\n          low = mid + 1;\n        } else {\n          high = mid;\n        }\n      }\n      return nativeMin(high, MAX_ARRAY_INDEX);\n    }\n\n    /**\n     * The base implementation of `_.sortedUniq` and `_.sortedUniqBy` without\n     * support for iteratee shorthands.\n     *\n     * @private\n     * @param {Array} array The array to inspect.\n     * @param {Function} [iteratee] The iteratee invoked per element.\n     * @returns {Array} Returns the new duplicate free array.\n     */\n    function baseSortedUniq(array, iteratee) {\n      var index = -1,\n          length = array.length,\n          resIndex = 0,\n          result = [];\n\n      while (++index < length) {\n        var value = array[index],\n            computed = iteratee ? iteratee(value) : value;\n\n        if (!index || !eq(computed, seen)) {\n          var seen = computed;\n          result[resIndex++] = value === 0 ? 0 : value;\n        }\n      }\n      return result;\n    }\n\n    /**\n     * The base implementation of `_.toNumber` which doesn't ensure correct\n     * conversions of binary, hexadecimal, or octal string values.\n     *\n     * @private\n     * @param {*} value The value to process.\n     * @returns {number} Returns the number.\n     */\n    function baseToNumber(value) {\n      if (typeof value == 'number') {\n        return value;\n      }\n      if (isSymbol(value)) {\n        return NAN;\n      }\n      return +value;\n    }\n\n    /**\n     * The base implementation of `_.toString` which doesn't convert nullish\n     * values to empty strings.\n     *\n     * @private\n     * @param {*} value The value to process.\n     * @returns {string} Returns the string.\n     */\n    function baseToString(value) {\n      // Exit early for strings to avoid a performance hit in some environments.\n      if (typeof value == 'string') {\n        return value;\n      }\n      if (isArray(value)) {\n        // Recursively convert values (susceptible to call stack limits).\n        return arrayMap(value, baseToString) + '';\n      }\n      if (isSymbol(value)) {\n        return symbolToString ? symbolToString.call(value) : '';\n      }\n      var result = (value + '');\n      return (result == '0' && (1 / value) == -INFINITY) ? '-0' : result;\n    }\n\n    /**\n     * The base implementation of `_.uniqBy` without support for iteratee shorthands.\n     *\n     * @private\n     * @param {Array} array The array to inspect.\n     * @param {Function} [iteratee] The iteratee invoked per element.\n     * @param {Function} [comparator] The comparator invoked per element.\n     * @returns {Array} Returns the new duplicate free array.\n     */\n    function baseUniq(array, iteratee, comparator) {\n      var index = -1,\n          includes = arrayIncludes,\n          length = array.length,\n          isCommon = true,\n          result = [],\n          seen = result;\n\n      if (comparator) {\n        isCommon = false;\n        includes = arrayIncludesWith;\n      }\n      else if (length >= LARGE_ARRAY_SIZE) {\n        var set = iteratee ? null : createSet(array);\n        if (set) {\n          return setToArray(set);\n        }\n        isCommon = false;\n        includes = cacheHas;\n        seen = new SetCache;\n      }\n      else {\n        seen = iteratee ? [] : result;\n      }\n      outer:\n      while (++index < length) {\n        var value = array[index],\n            computed = iteratee ? iteratee(value) : value;\n\n        value = (comparator || value !== 0) ? value : 0;\n        if (isCommon && computed === computed) {\n          var seenIndex = seen.length;\n          while (seenIndex--) {\n            if (seen[seenIndex] === computed) {\n              continue outer;\n            }\n          }\n          if (iteratee) {\n            seen.push(computed);\n          }\n          result.push(value);\n        }\n        else if (!includes(seen, computed, comparator)) {\n          if (seen !== result) {\n            seen.push(computed);\n          }\n          result.push(value);\n        }\n      }\n      return result;\n    }\n\n    /**\n     * The base implementation of `_.unset`.\n     *\n     * @private\n     * @param {Object} object The object to modify.\n     * @param {Array|string} path The property path to unset.\n     * @returns {boolean} Returns `true` if the property is deleted, else `false`.\n     */\n    function baseUnset(object, path) {\n      path = castPath(path, object);\n      object = parent(object, path);\n      return object == null || delete object[toKey(last(path))];\n    }\n\n    /**\n     * The base implementation of `_.update`.\n     *\n     * @private\n     * @param {Object} object The object to modify.\n     * @param {Array|string} path The path of the property to update.\n     * @param {Function} updater The function to produce the updated value.\n     * @param {Function} [customizer] The function to customize path creation.\n     * @returns {Object} Returns `object`.\n     */\n    function baseUpdate(object, path, updater, customizer) {\n      return baseSet(object, path, updater(baseGet(object, path)), customizer);\n    }\n\n    /**\n     * The base implementation of methods like `_.dropWhile` and `_.takeWhile`\n     * without support for iteratee shorthands.\n     *\n     * @private\n     * @param {Array} array The array to query.\n     * @param {Function} predicate The function invoked per iteration.\n     * @param {boolean} [isDrop] Specify dropping elements instead of taking them.\n     * @param {boolean} [fromRight] Specify iterating from right to left.\n     * @returns {Array} Returns the slice of `array`.\n     */\n    function baseWhile(array, predicate, isDrop, fromRight) {\n      var length = array.length,\n          index = fromRight ? length : -1;\n\n      while ((fromRight ? index-- : ++index < length) &&\n        predicate(array[index], index, array)) {}\n\n      return isDrop\n        ? baseSlice(array, (fromRight ? 0 : index), (fromRight ? index + 1 : length))\n        : baseSlice(array, (fromRight ? index + 1 : 0), (fromRight ? length : index));\n    }\n\n    /**\n     * The base implementation of `wrapperValue` which returns the result of\n     * performing a sequence of actions on the unwrapped `value`, where each\n     * successive action is supplied the return value of the previous.\n     *\n     * @private\n     * @param {*} value The unwrapped value.\n     * @param {Array} actions Actions to perform to resolve the unwrapped value.\n     * @returns {*} Returns the resolved value.\n     */\n    function baseWrapperValue(value, actions) {\n      var result = value;\n      if (result instanceof LazyWrapper) {\n        result = result.value();\n      }\n      return arrayReduce(actions, function(result, action) {\n        return action.func.apply(action.thisArg, arrayPush([result], action.args));\n      }, result);\n    }\n\n    /**\n     * The base implementation of methods like `_.xor`, without support for\n     * iteratee shorthands, that accepts an array of arrays to inspect.\n     *\n     * @private\n     * @param {Array} arrays The arrays to inspect.\n     * @param {Function} [iteratee] The iteratee invoked per element.\n     * @param {Function} [comparator] The comparator invoked per element.\n     * @returns {Array} Returns the new array of values.\n     */\n    function baseXor(arrays, iteratee, comparator) {\n      var length = arrays.length;\n      if (length < 2) {\n        return length ? baseUniq(arrays[0]) : [];\n      }\n      var index = -1,\n          result = Array(length);\n\n      while (++index < length) {\n        var array = arrays[index],\n            othIndex = -1;\n\n        while (++othIndex < length) {\n          if (othIndex != index) {\n            result[index] = baseDifference(result[index] || array, arrays[othIndex], iteratee, comparator);\n          }\n        }\n      }\n      return baseUniq(baseFlatten(result, 1), iteratee, comparator);\n    }\n\n    /**\n     * This base implementation of `_.zipObject` which assigns values using `assignFunc`.\n     *\n     * @private\n     * @param {Array} props The property identifiers.\n     * @param {Array} values The property values.\n     * @param {Function} assignFunc The function to assign values.\n     * @returns {Object} Returns the new object.\n     */\n    function baseZipObject(props, values, assignFunc) {\n      var index = -1,\n          length = props.length,\n          valsLength = values.length,\n          result = {};\n\n      while (++index < length) {\n        var value = index < valsLength ? values[index] : undefined;\n        assignFunc(result, props[index], value);\n      }\n      return result;\n    }\n\n    /**\n     * Casts `value` to an empty array if it's not an array like object.\n     *\n     * @private\n     * @param {*} value The value to inspect.\n     * @returns {Array|Object} Returns the cast array-like object.\n     */\n    function castArrayLikeObject(value) {\n      return isArrayLikeObject(value) ? value : [];\n    }\n\n    /**\n     * Casts `value` to `identity` if it's not a function.\n     *\n     * @private\n     * @param {*} value The value to inspect.\n     * @returns {Function} Returns cast function.\n     */\n    function castFunction(value) {\n      return typeof value == 'function' ? value : identity;\n    }\n\n    /**\n     * Casts `value` to a path array if it's not one.\n     *\n     * @private\n     * @param {*} value The value to inspect.\n     * @param {Object} [object] The object to query keys on.\n     * @returns {Array} Returns the cast property path array.\n     */\n    function castPath(value, object) {\n      if (isArray(value)) {\n        return value;\n      }\n      return isKey(value, object) ? [value] : stringToPath(toString(value));\n    }\n\n    /**\n     * A `baseRest` alias which can be replaced with `identity` by module\n     * replacement plugins.\n     *\n     * @private\n     * @type {Function}\n     * @param {Function} func The function to apply a rest parameter to.\n     * @returns {Function} Returns the new function.\n     */\n    var castRest = baseRest;\n\n    /**\n     * Casts `array` to a slice if it's needed.\n     *\n     * @private\n     * @param {Array} array The array to inspect.\n     * @param {number} start The start position.\n     * @param {number} [end=array.length] The end position.\n     * @returns {Array} Returns the cast slice.\n     */\n    function castSlice(array, start, end) {\n      var length = array.length;\n      end = end === undefined ? length : end;\n      return (!start && end >= length) ? array : baseSlice(array, start, end);\n    }\n\n    /**\n     * A simple wrapper around the global [`clearTimeout`](https://mdn.io/clearTimeout).\n     *\n     * @private\n     * @param {number|Object} id The timer id or timeout object of the timer to clear.\n     */\n    var clearTimeout = ctxClearTimeout || function(id) {\n      return root.clearTimeout(id);\n    };\n\n    /**\n     * Creates a clone of  `buffer`.\n     *\n     * @private\n     * @param {Buffer} buffer The buffer to clone.\n     * @param {boolean} [isDeep] Specify a deep clone.\n     * @returns {Buffer} Returns the cloned buffer.\n     */\n    function cloneBuffer(buffer, isDeep) {\n      if (isDeep) {\n        return buffer.slice();\n      }\n      var length = buffer.length,\n          result = allocUnsafe ? allocUnsafe(length) : new buffer.constructor(length);\n\n      buffer.copy(result);\n      return result;\n    }\n\n    /**\n     * Creates a clone of `arrayBuffer`.\n     *\n     * @private\n     * @param {ArrayBuffer} arrayBuffer The array buffer to clone.\n     * @returns {ArrayBuffer} Returns the cloned array buffer.\n     */\n    function cloneArrayBuffer(arrayBuffer) {\n      var result = new arrayBuffer.constructor(arrayBuffer.byteLength);\n      new Uint8Array(result).set(new Uint8Array(arrayBuffer));\n      return result;\n    }\n\n    /**\n     * Creates a clone of `dataView`.\n     *\n     * @private\n     * @param {Object} dataView The data view to clone.\n     * @param {boolean} [isDeep] Specify a deep clone.\n     * @returns {Object} Returns the cloned data view.\n     */\n    function cloneDataView(dataView, isDeep) {\n      var buffer = isDeep ? cloneArrayBuffer(dataView.buffer) : dataView.buffer;\n      return new dataView.constructor(buffer, dataView.byteOffset, dataView.byteLength);\n    }\n\n    /**\n     * Creates a clone of `regexp`.\n     *\n     * @private\n     * @param {Object} regexp The regexp to clone.\n     * @returns {Object} Returns the cloned regexp.\n     */\n    function cloneRegExp(regexp) {\n      var result = new regexp.constructor(regexp.source, reFlags.exec(regexp));\n      result.lastIndex = regexp.lastIndex;\n      return result;\n    }\n\n    /**\n     * Creates a clone of the `symbol` object.\n     *\n     * @private\n     * @param {Object} symbol The symbol object to clone.\n     * @returns {Object} Returns the cloned symbol object.\n     */\n    function cloneSymbol(symbol) {\n      return symbolValueOf ? Object(symbolValueOf.call(symbol)) : {};\n    }\n\n    /**\n     * Creates a clone of `typedArray`.\n     *\n     * @private\n     * @param {Object} typedArray The typed array to clone.\n     * @param {boolean} [isDeep] Specify a deep clone.\n     * @returns {Object} Returns the cloned typed array.\n     */\n    function cloneTypedArray(typedArray, isDeep) {\n      var buffer = isDeep ? cloneArrayBuffer(typedArray.buffer) : typedArray.buffer;\n      return new typedArray.constructor(buffer, typedArray.byteOffset, typedArray.length);\n    }\n\n    /**\n     * Compares values to sort them in ascending order.\n     *\n     * @private\n     * @param {*} value The value to compare.\n     * @param {*} other The other value to compare.\n     * @returns {number} Returns the sort order indicator for `value`.\n     */\n    function compareAscending(value, other) {\n      if (value !== other) {\n        var valIsDefined = value !== undefined,\n            valIsNull = value === null,\n            valIsReflexive = value === value,\n            valIsSymbol = isSymbol(value);\n\n        var othIsDefined = other !== undefined,\n            othIsNull = other === null,\n            othIsReflexive = other === other,\n            othIsSymbol = isSymbol(other);\n\n        if ((!othIsNull && !othIsSymbol && !valIsSymbol && value > other) ||\n            (valIsSymbol && othIsDefined && othIsReflexive && !othIsNull && !othIsSymbol) ||\n            (valIsNull && othIsDefined && othIsReflexive) ||\n            (!valIsDefined && othIsReflexive) ||\n            !valIsReflexive) {\n          return 1;\n        }\n        if ((!valIsNull && !valIsSymbol && !othIsSymbol && value < other) ||\n            (othIsSymbol && valIsDefined && valIsReflexive && !valIsNull && !valIsSymbol) ||\n            (othIsNull && valIsDefined && valIsReflexive) ||\n            (!othIsDefined && valIsReflexive) ||\n            !othIsReflexive) {\n          return -1;\n        }\n      }\n      return 0;\n    }\n\n    /**\n     * Used by `_.orderBy` to compare multiple properties of a value to another\n     * and stable sort them.\n     *\n     * If `orders` is unspecified, all values are sorted in ascending order. Otherwise,\n     * specify an order of \"desc\" for descending or \"asc\" for ascending sort order\n     * of corresponding values.\n     *\n     * @private\n     * @param {Object} object The object to compare.\n     * @param {Object} other The other object to compare.\n     * @param {boolean[]|string[]} orders The order to sort by for each property.\n     * @returns {number} Returns the sort order indicator for `object`.\n     */\n    function compareMultiple(object, other, orders) {\n      var index = -1,\n          objCriteria = object.criteria,\n          othCriteria = other.criteria,\n          length = objCriteria.length,\n          ordersLength = orders.length;\n\n      while (++index < length) {\n        var result = compareAscending(objCriteria[index], othCriteria[index]);\n        if (result) {\n          if (index >= ordersLength) {\n            return result;\n          }\n          var order = orders[index];\n          return result * (order == 'desc' ? -1 : 1);\n        }\n      }\n      // Fixes an `Array#sort` bug in the JS engine embedded in Adobe applications\n      // that causes it, under certain circumstances, to provide the same value for\n      // `object` and `other`. See https://github.com/jashkenas/underscore/pull/1247\n      // for more details.\n      //\n      // This also ensures a stable sort in V8 and other engines.\n      // See https://bugs.chromium.org/p/v8/issues/detail?id=90 for more details.\n      return object.index - other.index;\n    }\n\n    /**\n     * Creates an array that is the composition of partially applied arguments,\n     * placeholders, and provided arguments into a single array of arguments.\n     *\n     * @private\n     * @param {Array} args The provided arguments.\n     * @param {Array} partials The arguments to prepend to those provided.\n     * @param {Array} holders The `partials` placeholder indexes.\n     * @params {boolean} [isCurried] Specify composing for a curried function.\n     * @returns {Array} Returns the new array of composed arguments.\n     */\n    function composeArgs(args, partials, holders, isCurried) {\n      var argsIndex = -1,\n          argsLength = args.length,\n          holdersLength = holders.length,\n          leftIndex = -1,\n          leftLength = partials.length,\n          rangeLength = nativeMax(argsLength - holdersLength, 0),\n          result = Array(leftLength + rangeLength),\n          isUncurried = !isCurried;\n\n      while (++leftIndex < leftLength) {\n        result[leftIndex] = partials[leftIndex];\n      }\n      while (++argsIndex < holdersLength) {\n        if (isUncurried || argsIndex < argsLength) {\n          result[holders[argsIndex]] = args[argsIndex];\n        }\n      }\n      while (rangeLength--) {\n        result[leftIndex++] = args[argsIndex++];\n      }\n      return result;\n    }\n\n    /**\n     * This function is like `composeArgs` except that the arguments composition\n     * is tailored for `_.partialRight`.\n     *\n     * @private\n     * @param {Array} args The provided arguments.\n     * @param {Array} partials The arguments to append to those provided.\n     * @param {Array} holders The `partials` placeholder indexes.\n     * @params {boolean} [isCurried] Specify composing for a curried function.\n     * @returns {Array} Returns the new array of composed arguments.\n     */\n    function composeArgsRight(args, partials, holders, isCurried) {\n      var argsIndex = -1,\n          argsLength = args.length,\n          holdersIndex = -1,\n          holdersLength = holders.length,\n          rightIndex = -1,\n          rightLength = partials.length,\n          rangeLength = nativeMax(argsLength - holdersLength, 0),\n          result = Array(rangeLength + rightLength),\n          isUncurried = !isCurried;\n\n      while (++argsIndex < rangeLength) {\n        result[argsIndex] = args[argsIndex];\n      }\n      var offset = argsIndex;\n      while (++rightIndex < rightLength) {\n        result[offset + rightIndex] = partials[rightIndex];\n      }\n      while (++holdersIndex < holdersLength) {\n        if (isUncurried || argsIndex < argsLength) {\n          result[offset + holders[holdersIndex]] = args[argsIndex++];\n        }\n      }\n      return result;\n    }\n\n    /**\n     * Copies the values of `source` to `array`.\n     *\n     * @private\n     * @param {Array} source The array to copy values from.\n     * @param {Array} [array=[]] The array to copy values to.\n     * @returns {Array} Returns `array`.\n     */\n    function copyArray(source, array) {\n      var index = -1,\n          length = source.length;\n\n      array || (array = Array(length));\n      while (++index < length) {\n        array[index] = source[index];\n      }\n      return array;\n    }\n\n    /**\n     * Copies properties of `source` to `object`.\n     *\n     * @private\n     * @param {Object} source The object to copy properties from.\n     * @param {Array} props The property identifiers to copy.\n     * @param {Object} [object={}] The object to copy properties to.\n     * @param {Function} [customizer] The function to customize copied values.\n     * @returns {Object} Returns `object`.\n     */\n    function copyObject(source, props, object, customizer) {\n      var isNew = !object;\n      object || (object = {});\n\n      var index = -1,\n          length = props.length;\n\n      while (++index < length) {\n        var key = props[index];\n\n        var newValue = customizer\n          ? customizer(object[key], source[key], key, object, source)\n          : undefined;\n\n        if (newValue === undefined) {\n          newValue = source[key];\n        }\n        if (isNew) {\n          baseAssignValue(object, key, newValue);\n        } else {\n          assignValue(object, key, newValue);\n        }\n      }\n      return object;\n    }\n\n    /**\n     * Copies own symbols of `source` to `object`.\n     *\n     * @private\n     * @param {Object} source The object to copy symbols from.\n     * @param {Object} [object={}] The object to copy symbols to.\n     * @returns {Object} Returns `object`.\n     */\n    function copySymbols(source, object) {\n      return copyObject(source, getSymbols(source), object);\n    }\n\n    /**\n     * Copies own and inherited symbols of `source` to `object`.\n     *\n     * @private\n     * @param {Object} source The object to copy symbols from.\n     * @param {Object} [object={}] The object to copy symbols to.\n     * @returns {Object} Returns `object`.\n     */\n    function copySymbolsIn(source, object) {\n      return copyObject(source, getSymbolsIn(source), object);\n    }\n\n    /**\n     * Creates a function like `_.groupBy`.\n     *\n     * @private\n     * @param {Function} setter The function to set accumulator values.\n     * @param {Function} [initializer] The accumulator object initializer.\n     * @returns {Function} Returns the new aggregator function.\n     */\n    function createAggregator(setter, initializer) {\n      return function(collection, iteratee) {\n        var func = isArray(collection) ? arrayAggregator : baseAggregator,\n            accumulator = initializer ? initializer() : {};\n\n        return func(collection, setter, getIteratee(iteratee, 2), accumulator);\n      };\n    }\n\n    /**\n     * Creates a function like `_.assign`.\n     *\n     * @private\n     * @param {Function} assigner The function to assign values.\n     * @returns {Function} Returns the new assigner function.\n     */\n    function createAssigner(assigner) {\n      return baseRest(function(object, sources) {\n        var index = -1,\n            length = sources.length,\n            customizer = length > 1 ? sources[length - 1] : undefined,\n            guard = length > 2 ? sources[2] : undefined;\n\n        customizer = (assigner.length > 3 && typeof customizer == 'function')\n          ? (length--, customizer)\n          : undefined;\n\n        if (guard && isIterateeCall(sources[0], sources[1], guard)) {\n          customizer = length < 3 ? undefined : customizer;\n          length = 1;\n        }\n        object = Object(object);\n        while (++index < length) {\n          var source = sources[index];\n          if (source) {\n            assigner(object, source, index, customizer);\n          }\n        }\n        return object;\n      });\n    }\n\n    /**\n     * Creates a `baseEach` or `baseEachRight` function.\n     *\n     * @private\n     * @param {Function} eachFunc The function to iterate over a collection.\n     * @param {boolean} [fromRight] Specify iterating from right to left.\n     * @returns {Function} Returns the new base function.\n     */\n    function createBaseEach(eachFunc, fromRight) {\n      return function(collection, iteratee) {\n        if (collection == null) {\n          return collection;\n        }\n        if (!isArrayLike(collection)) {\n          return eachFunc(collection, iteratee);\n        }\n        var length = collection.length,\n            index = fromRight ? length : -1,\n            iterable = Object(collection);\n\n        while ((fromRight ? index-- : ++index < length)) {\n          if (iteratee(iterable[index], index, iterable) === false) {\n            break;\n          }\n        }\n        return collection;\n      };\n    }\n\n    /**\n     * Creates a base function for methods like `_.forIn` and `_.forOwn`.\n     *\n     * @private\n     * @param {boolean} [fromRight] Specify iterating from right to left.\n     * @returns {Function} Returns the new base function.\n     */\n    function createBaseFor(fromRight) {\n      return function(object, iteratee, keysFunc) {\n        var index = -1,\n            iterable = Object(object),\n            props = keysFunc(object),\n            length = props.length;\n\n        while (length--) {\n          var key = props[fromRight ? length : ++index];\n          if (iteratee(iterable[key], key, iterable) === false) {\n            break;\n          }\n        }\n        return object;\n      };\n    }\n\n    /**\n     * Creates a function that wraps `func` to invoke it with the optional `this`\n     * binding of `thisArg`.\n     *\n     * @private\n     * @param {Function} func The function to wrap.\n     * @param {number} bitmask The bitmask flags. See `createWrap` for more details.\n     * @param {*} [thisArg] The `this` binding of `func`.\n     * @returns {Function} Returns the new wrapped function.\n     */\n    function createBind(func, bitmask, thisArg) {\n      var isBind = bitmask & WRAP_BIND_FLAG,\n          Ctor = createCtor(func);\n\n      function wrapper() {\n        var fn = (this && this !== root && this instanceof wrapper) ? Ctor : func;\n        return fn.apply(isBind ? thisArg : this, arguments);\n      }\n      return wrapper;\n    }\n\n    /**\n     * Creates a function like `_.lowerFirst`.\n     *\n     * @private\n     * @param {string} methodName The name of the `String` case method to use.\n     * @returns {Function} Returns the new case function.\n     */\n    function createCaseFirst(methodName) {\n      return function(string) {\n        string = toString(string);\n\n        var strSymbols = hasUnicode(string)\n          ? stringToArray(string)\n          : undefined;\n\n        var chr = strSymbols\n          ? strSymbols[0]\n          : string.charAt(0);\n\n        var trailing = strSymbols\n          ? castSlice(strSymbols, 1).join('')\n          : string.slice(1);\n\n        return chr[methodName]() + trailing;\n      };\n    }\n\n    /**\n     * Creates a function like `_.camelCase`.\n     *\n     * @private\n     * @param {Function} callback The function to combine each word.\n     * @returns {Function} Returns the new compounder function.\n     */\n    function createCompounder(callback) {\n      return function(string) {\n        return arrayReduce(words(deburr(string).replace(reApos, '')), callback, '');\n      };\n    }\n\n    /**\n     * Creates a function that produces an instance of `Ctor` regardless of\n     * whether it was invoked as part of a `new` expression or by `call` or `apply`.\n     *\n     * @private\n     * @param {Function} Ctor The constructor to wrap.\n     * @returns {Function} Returns the new wrapped function.\n     */\n    function createCtor(Ctor) {\n      return function() {\n        // Use a `switch` statement to work with class constructors. See\n        // http://ecma-international.org/ecma-262/7.0/#sec-ecmascript-function-objects-call-thisargument-argumentslist\n        // for more details.\n        var args = arguments;\n        switch (args.length) {\n          case 0: return new Ctor;\n          case 1: return new Ctor(args[0]);\n          case 2: return new Ctor(args[0], args[1]);\n          case 3: return new Ctor(args[0], args[1], args[2]);\n          case 4: return new Ctor(args[0], args[1], args[2], args[3]);\n          case 5: return new Ctor(args[0], args[1], args[2], args[3], args[4]);\n          case 6: return new Ctor(args[0], args[1], args[2], args[3], args[4], args[5]);\n          case 7: return new Ctor(args[0], args[1], args[2], args[3], args[4], args[5], args[6]);\n        }\n        var thisBinding = baseCreate(Ctor.prototype),\n            result = Ctor.apply(thisBinding, args);\n\n        // Mimic the constructor's `return` behavior.\n        // See https://es5.github.io/#x13.2.2 for more details.\n        return isObject(result) ? result : thisBinding;\n      };\n    }\n\n    /**\n     * Creates a function that wraps `func` to enable currying.\n     *\n     * @private\n     * @param {Function} func The function to wrap.\n     * @param {number} bitmask The bitmask flags. See `createWrap` for more details.\n     * @param {number} arity The arity of `func`.\n     * @returns {Function} Returns the new wrapped function.\n     */\n    function createCurry(func, bitmask, arity) {\n      var Ctor = createCtor(func);\n\n      function wrapper() {\n        var length = arguments.length,\n            args = Array(length),\n            index = length,\n            placeholder = getHolder(wrapper);\n\n        while (index--) {\n          args[index] = arguments[index];\n        }\n        var holders = (length < 3 && args[0] !== placeholder && args[length - 1] !== placeholder)\n          ? []\n          : replaceHolders(args, placeholder);\n\n        length -= holders.length;\n        if (length < arity) {\n          return createRecurry(\n            func, bitmask, createHybrid, wrapper.placeholder, undefined,\n            args, holders, undefined, undefined, arity - length);\n        }\n        var fn = (this && this !== root && this instanceof wrapper) ? Ctor : func;\n        return apply(fn, this, args);\n      }\n      return wrapper;\n    }\n\n    /**\n     * Creates a `_.find` or `_.findLast` function.\n     *\n     * @private\n     * @param {Function} findIndexFunc The function to find the collection index.\n     * @returns {Function} Returns the new find function.\n     */\n    function createFind(findIndexFunc) {\n      return function(collection, predicate, fromIndex) {\n        var iterable = Object(collection);\n        if (!isArrayLike(collection)) {\n          var iteratee = getIteratee(predicate, 3);\n          collection = keys(collection);\n          predicate = function(key) { return iteratee(iterable[key], key, iterable); };\n        }\n        var index = findIndexFunc(collection, predicate, fromIndex);\n        return index > -1 ? iterable[iteratee ? collection[index] : index] : undefined;\n      };\n    }\n\n    /**\n     * Creates a `_.flow` or `_.flowRight` function.\n     *\n     * @private\n     * @param {boolean} [fromRight] Specify iterating from right to left.\n     * @returns {Function} Returns the new flow function.\n     */\n    function createFlow(fromRight) {\n      return flatRest(function(funcs) {\n        var length = funcs.length,\n            index = length,\n            prereq = LodashWrapper.prototype.thru;\n\n        if (fromRight) {\n          funcs.reverse();\n        }\n        while (index--) {\n          var func = funcs[index];\n          if (typeof func != 'function') {\n            throw new TypeError(FUNC_ERROR_TEXT);\n          }\n          if (prereq && !wrapper && getFuncName(func) == 'wrapper') {\n            var wrapper = new LodashWrapper([], true);\n          }\n        }\n        index = wrapper ? index : length;\n        while (++index < length) {\n          func = funcs[index];\n\n          var funcName = getFuncName(func),\n              data = funcName == 'wrapper' ? getData(func) : undefined;\n\n          if (data && isLaziable(data[0]) &&\n                data[1] == (WRAP_ARY_FLAG | WRAP_CURRY_FLAG | WRAP_PARTIAL_FLAG | WRAP_REARG_FLAG) &&\n                !data[4].length && data[9] == 1\n              ) {\n            wrapper = wrapper[getFuncName(data[0])].apply(wrapper, data[3]);\n          } else {\n            wrapper = (func.length == 1 && isLaziable(func))\n              ? wrapper[funcName]()\n              : wrapper.thru(func);\n          }\n        }\n        return function() {\n          var args = arguments,\n              value = args[0];\n\n          if (wrapper && args.length == 1 && isArray(value)) {\n            return wrapper.plant(value).value();\n          }\n          var index = 0,\n              result = length ? funcs[index].apply(this, args) : value;\n\n          while (++index < length) {\n            result = funcs[index].call(this, result);\n          }\n          return result;\n        };\n      });\n    }\n\n    /**\n     * Creates a function that wraps `func` to invoke it with optional `this`\n     * binding of `thisArg`, partial application, and currying.\n     *\n     * @private\n     * @param {Function|string} func The function or method name to wrap.\n     * @param {number} bitmask The bitmask flags. See `createWrap` for more details.\n     * @param {*} [thisArg] The `this` binding of `func`.\n     * @param {Array} [partials] The arguments to prepend to those provided to\n     *  the new function.\n     * @param {Array} [holders] The `partials` placeholder indexes.\n     * @param {Array} [partialsRight] The arguments to append to those provided\n     *  to the new function.\n     * @param {Array} [holdersRight] The `partialsRight` placeholder indexes.\n     * @param {Array} [argPos] The argument positions of the new function.\n     * @param {number} [ary] The arity cap of `func`.\n     * @param {number} [arity] The arity of `func`.\n     * @returns {Function} Returns the new wrapped function.\n     */\n    function createHybrid(func, bitmask, thisArg, partials, holders, partialsRight, holdersRight, argPos, ary, arity) {\n      var isAry = bitmask & WRAP_ARY_FLAG,\n          isBind = bitmask & WRAP_BIND_FLAG,\n          isBindKey = bitmask & WRAP_BIND_KEY_FLAG,\n          isCurried = bitmask & (WRAP_CURRY_FLAG | WRAP_CURRY_RIGHT_FLAG),\n          isFlip = bitmask & WRAP_FLIP_FLAG,\n          Ctor = isBindKey ? undefined : createCtor(func);\n\n      function wrapper() {\n        var length = arguments.length,\n            args = Array(length),\n            index = length;\n\n        while (index--) {\n          args[index] = arguments[index];\n        }\n        if (isCurried) {\n          var placeholder = getHolder(wrapper),\n              holdersCount = countHolders(args, placeholder);\n        }\n        if (partials) {\n          args = composeArgs(args, partials, holders, isCurried);\n        }\n        if (partialsRight) {\n          args = composeArgsRight(args, partialsRight, holdersRight, isCurried);\n        }\n        length -= holdersCount;\n        if (isCurried && length < arity) {\n          var newHolders = replaceHolders(args, placeholder);\n          return createRecurry(\n            func, bitmask, createHybrid, wrapper.placeholder, thisArg,\n            args, newHolders, argPos, ary, arity - length\n          );\n        }\n        var thisBinding = isBind ? thisArg : this,\n            fn = isBindKey ? thisBinding[func] : func;\n\n        length = args.length;\n        if (argPos) {\n          args = reorder(args, argPos);\n        } else if (isFlip && length > 1) {\n          args.reverse();\n        }\n        if (isAry && ary < length) {\n          args.length = ary;\n        }\n        if (this && this !== root && this instanceof wrapper) {\n          fn = Ctor || createCtor(fn);\n        }\n        return fn.apply(thisBinding, args);\n      }\n      return wrapper;\n    }\n\n    /**\n     * Creates a function like `_.invertBy`.\n     *\n     * @private\n     * @param {Function} setter The function to set accumulator values.\n     * @param {Function} toIteratee The function to resolve iteratees.\n     * @returns {Function} Returns the new inverter function.\n     */\n    function createInverter(setter, toIteratee) {\n      return function(object, iteratee) {\n        return baseInverter(object, setter, toIteratee(iteratee), {});\n      };\n    }\n\n    /**\n     * Creates a function that performs a mathematical operation on two values.\n     *\n     * @private\n     * @param {Function} operator The function to perform the operation.\n     * @param {number} [defaultValue] The value used for `undefined` arguments.\n     * @returns {Function} Returns the new mathematical operation function.\n     */\n    function createMathOperation(operator, defaultValue) {\n      return function(value, other) {\n        var result;\n        if (value === undefined && other === undefined) {\n          return defaultValue;\n        }\n        if (value !== undefined) {\n          result = value;\n        }\n        if (other !== undefined) {\n          if (result === undefined) {\n            return other;\n          }\n          if (typeof value == 'string' || typeof other == 'string') {\n            value = baseToString(value);\n            other = baseToString(other);\n          } else {\n            value = baseToNumber(value);\n            other = baseToNumber(other);\n          }\n          result = operator(value, other);\n        }\n        return result;\n      };\n    }\n\n    /**\n     * Creates a function like `_.over`.\n     *\n     * @private\n     * @param {Function} arrayFunc The function to iterate over iteratees.\n     * @returns {Function} Returns the new over function.\n     */\n    function createOver(arrayFunc) {\n      return flatRest(function(iteratees) {\n        iteratees = arrayMap(iteratees, baseUnary(getIteratee()));\n        return baseRest(function(args) {\n          var thisArg = this;\n          return arrayFunc(iteratees, function(iteratee) {\n            return apply(iteratee, thisArg, args);\n          });\n        });\n      });\n    }\n\n    /**\n     * Creates the padding for `string` based on `length`. The `chars` string\n     * is truncated if the number of characters exceeds `length`.\n     *\n     * @private\n     * @param {number} length The padding length.\n     * @param {string} [chars=' '] The string used as padding.\n     * @returns {string} Returns the padding for `string`.\n     */\n    function createPadding(length, chars) {\n      chars = chars === undefined ? ' ' : baseToString(chars);\n\n      var charsLength = chars.length;\n      if (charsLength < 2) {\n        return charsLength ? baseRepeat(chars, length) : chars;\n      }\n      var result = baseRepeat(chars, nativeCeil(length / stringSize(chars)));\n      return hasUnicode(chars)\n        ? castSlice(stringToArray(result), 0, length).join('')\n        : result.slice(0, length);\n    }\n\n    /**\n     * Creates a function that wraps `func` to invoke it with the `this` binding\n     * of `thisArg` and `partials` prepended to the arguments it receives.\n     *\n     * @private\n     * @param {Function} func The function to wrap.\n     * @param {number} bitmask The bitmask flags. See `createWrap` for more details.\n     * @param {*} thisArg The `this` binding of `func`.\n     * @param {Array} partials The arguments to prepend to those provided to\n     *  the new function.\n     * @returns {Function} Returns the new wrapped function.\n     */\n    function createPartial(func, bitmask, thisArg, partials) {\n      var isBind = bitmask & WRAP_BIND_FLAG,\n          Ctor = createCtor(func);\n\n      function wrapper() {\n        var argsIndex = -1,\n            argsLength = arguments.length,\n            leftIndex = -1,\n            leftLength = partials.length,\n            args = Array(leftLength + argsLength),\n            fn = (this && this !== root && this instanceof wrapper) ? Ctor : func;\n\n        while (++leftIndex < leftLength) {\n          args[leftIndex] = partials[leftIndex];\n        }\n        while (argsLength--) {\n          args[leftIndex++] = arguments[++argsIndex];\n        }\n        return apply(fn, isBind ? thisArg : this, args);\n      }\n      return wrapper;\n    }\n\n    /**\n     * Creates a `_.range` or `_.rangeRight` function.\n     *\n     * @private\n     * @param {boolean} [fromRight] Specify iterating from right to left.\n     * @returns {Function} Returns the new range function.\n     */\n    function createRange(fromRight) {\n      return function(start, end, step) {\n        if (step && typeof step != 'number' && isIterateeCall(start, end, step)) {\n          end = step = undefined;\n        }\n        // Ensure the sign of `-0` is preserved.\n        start = toFinite(start);\n        if (end === undefined) {\n          end = start;\n          start = 0;\n        } else {\n          end = toFinite(end);\n        }\n        step = step === undefined ? (start < end ? 1 : -1) : toFinite(step);\n        return baseRange(start, end, step, fromRight);\n      };\n    }\n\n    /**\n     * Creates a function that performs a relational operation on two values.\n     *\n     * @private\n     * @param {Function} operator The function to perform the operation.\n     * @returns {Function} Returns the new relational operation function.\n     */\n    function createRelationalOperation(operator) {\n      return function(value, other) {\n        if (!(typeof value == 'string' && typeof other == 'string')) {\n          value = toNumber(value);\n          other = toNumber(other);\n        }\n        return operator(value, other);\n      };\n    }\n\n    /**\n     * Creates a function that wraps `func` to continue currying.\n     *\n     * @private\n     * @param {Function} func The function to wrap.\n     * @param {number} bitmask The bitmask flags. See `createWrap` for more details.\n     * @param {Function} wrapFunc The function to create the `func` wrapper.\n     * @param {*} placeholder The placeholder value.\n     * @param {*} [thisArg] The `this` binding of `func`.\n     * @param {Array} [partials] The arguments to prepend to those provided to\n     *  the new function.\n     * @param {Array} [holders] The `partials` placeholder indexes.\n     * @param {Array} [argPos] The argument positions of the new function.\n     * @param {number} [ary] The arity cap of `func`.\n     * @param {number} [arity] The arity of `func`.\n     * @returns {Function} Returns the new wrapped function.\n     */\n    function createRecurry(func, bitmask, wrapFunc, placeholder, thisArg, partials, holders, argPos, ary, arity) {\n      var isCurry = bitmask & WRAP_CURRY_FLAG,\n          newHolders = isCurry ? holders : undefined,\n          newHoldersRight = isCurry ? undefined : holders,\n          newPartials = isCurry ? partials : undefined,\n          newPartialsRight = isCurry ? undefined : partials;\n\n      bitmask |= (isCurry ? WRAP_PARTIAL_FLAG : WRAP_PARTIAL_RIGHT_FLAG);\n      bitmask &= ~(isCurry ? WRAP_PARTIAL_RIGHT_FLAG : WRAP_PARTIAL_FLAG);\n\n      if (!(bitmask & WRAP_CURRY_BOUND_FLAG)) {\n        bitmask &= ~(WRAP_BIND_FLAG | WRAP_BIND_KEY_FLAG);\n      }\n      var newData = [\n        func, bitmask, thisArg, newPartials, newHolders, newPartialsRight,\n        newHoldersRight, argPos, ary, arity\n      ];\n\n      var result = wrapFunc.apply(undefined, newData);\n      if (isLaziable(func)) {\n        setData(result, newData);\n      }\n      result.placeholder = placeholder;\n      return setWrapToString(result, func, bitmask);\n    }\n\n    /**\n     * Creates a function like `_.round`.\n     *\n     * @private\n     * @param {string} methodName The name of the `Math` method to use when rounding.\n     * @returns {Function} Returns the new round function.\n     */\n    function createRound(methodName) {\n      var func = Math[methodName];\n      return function(number, precision) {\n        number = toNumber(number);\n        precision = precision == null ? 0 : nativeMin(toInteger(precision), 292);\n        if (precision && nativeIsFinite(number)) {\n          // Shift with exponential notation to avoid floating-point issues.\n          // See [MDN](https://mdn.io/round#Examples) for more details.\n          var pair = (toString(number) + 'e').split('e'),\n              value = func(pair[0] + 'e' + (+pair[1] + precision));\n\n          pair = (toString(value) + 'e').split('e');\n          return +(pair[0] + 'e' + (+pair[1] - precision));\n        }\n        return func(number);\n      };\n    }\n\n    /**\n     * Creates a set object of `values`.\n     *\n     * @private\n     * @param {Array} values The values to add to the set.\n     * @returns {Object} Returns the new set.\n     */\n    var createSet = !(Set && (1 / setToArray(new Set([,-0]))[1]) == INFINITY) ? noop : function(values) {\n      return new Set(values);\n    };\n\n    /**\n     * Creates a `_.toPairs` or `_.toPairsIn` function.\n     *\n     * @private\n     * @param {Function} keysFunc The function to get the keys of a given object.\n     * @returns {Function} Returns the new pairs function.\n     */\n    function createToPairs(keysFunc) {\n      return function(object) {\n        var tag = getTag(object);\n        if (tag == mapTag) {\n          return mapToArray(object);\n        }\n        if (tag == setTag) {\n          return setToPairs(object);\n        }\n        return baseToPairs(object, keysFunc(object));\n      };\n    }\n\n    /**\n     * Creates a function that either curries or invokes `func` with optional\n     * `this` binding and partially applied arguments.\n     *\n     * @private\n     * @param {Function|string} func The function or method name to wrap.\n     * @param {number} bitmask The bitmask flags.\n     *    1 - `_.bind`\n     *    2 - `_.bindKey`\n     *    4 - `_.curry` or `_.curryRight` of a bound function\n     *    8 - `_.curry`\n     *   16 - `_.curryRight`\n     *   32 - `_.partial`\n     *   64 - `_.partialRight`\n     *  128 - `_.rearg`\n     *  256 - `_.ary`\n     *  512 - `_.flip`\n     * @param {*} [thisArg] The `this` binding of `func`.\n     * @param {Array} [partials] The arguments to be partially applied.\n     * @param {Array} [holders] The `partials` placeholder indexes.\n     * @param {Array} [argPos] The argument positions of the new function.\n     * @param {number} [ary] The arity cap of `func`.\n     * @param {number} [arity] The arity of `func`.\n     * @returns {Function} Returns the new wrapped function.\n     */\n    function createWrap(func, bitmask, thisArg, partials, holders, argPos, ary, arity) {\n      var isBindKey = bitmask & WRAP_BIND_KEY_FLAG;\n      if (!isBindKey && typeof func != 'function') {\n        throw new TypeError(FUNC_ERROR_TEXT);\n      }\n      var length = partials ? partials.length : 0;\n      if (!length) {\n        bitmask &= ~(WRAP_PARTIAL_FLAG | WRAP_PARTIAL_RIGHT_FLAG);\n        partials = holders = undefined;\n      }\n      ary = ary === undefined ? ary : nativeMax(toInteger(ary), 0);\n      arity = arity === undefined ? arity : toInteger(arity);\n      length -= holders ? holders.length : 0;\n\n      if (bitmask & WRAP_PARTIAL_RIGHT_FLAG) {\n        var partialsRight = partials,\n            holdersRight = holders;\n\n        partials = holders = undefined;\n      }\n      var data = isBindKey ? undefined : getData(func);\n\n      var newData = [\n        func, bitmask, thisArg, partials, holders, partialsRight, holdersRight,\n        argPos, ary, arity\n      ];\n\n      if (data) {\n        mergeData(newData, data);\n      }\n      func = newData[0];\n      bitmask = newData[1];\n      thisArg = newData[2];\n      partials = newData[3];\n      holders = newData[4];\n      arity = newData[9] = newData[9] === undefined\n        ? (isBindKey ? 0 : func.length)\n        : nativeMax(newData[9] - length, 0);\n\n      if (!arity && bitmask & (WRAP_CURRY_FLAG | WRAP_CURRY_RIGHT_FLAG)) {\n        bitmask &= ~(WRAP_CURRY_FLAG | WRAP_CURRY_RIGHT_FLAG);\n      }\n      if (!bitmask || bitmask == WRAP_BIND_FLAG) {\n        var result = createBind(func, bitmask, thisArg);\n      } else if (bitmask == WRAP_CURRY_FLAG || bitmask == WRAP_CURRY_RIGHT_FLAG) {\n        result = createCurry(func, bitmask, arity);\n      } else if ((bitmask == WRAP_PARTIAL_FLAG || bitmask == (WRAP_BIND_FLAG | WRAP_PARTIAL_FLAG)) && !holders.length) {\n        result = createPartial(func, bitmask, thisArg, partials);\n      } else {\n        result = createHybrid.apply(undefined, newData);\n      }\n      var setter = data ? baseSetData : setData;\n      return setWrapToString(setter(result, newData), func, bitmask);\n    }\n\n    /**\n     * Used by `_.defaults` to customize its `_.assignIn` use to assign properties\n     * of source objects to the destination object for all destination properties\n     * that resolve to `undefined`.\n     *\n     * @private\n     * @param {*} objValue The destination value.\n     * @param {*} srcValue The source value.\n     * @param {string} key The key of the property to assign.\n     * @param {Object} object The parent object of `objValue`.\n     * @returns {*} Returns the value to assign.\n     */\n    function customDefaultsAssignIn(objValue, srcValue, key, object) {\n      if (objValue === undefined ||\n          (eq(objValue, objectProto[key]) && !hasOwnProperty.call(object, key))) {\n        return srcValue;\n      }\n      return objValue;\n    }\n\n    /**\n     * Used by `_.defaultsDeep` to customize its `_.merge` use to merge source\n     * objects into destination objects that are passed thru.\n     *\n     * @private\n     * @param {*} objValue The destination value.\n     * @param {*} srcValue The source value.\n     * @param {string} key The key of the property to merge.\n     * @param {Object} object The parent object of `objValue`.\n     * @param {Object} source The parent object of `srcValue`.\n     * @param {Object} [stack] Tracks traversed source values and their merged\n     *  counterparts.\n     * @returns {*} Returns the value to assign.\n     */\n    function customDefaultsMerge(objValue, srcValue, key, object, source, stack) {\n      if (isObject(objValue) && isObject(srcValue)) {\n        // Recursively merge objects and arrays (susceptible to call stack limits).\n        stack.set(srcValue, objValue);\n        baseMerge(objValue, srcValue, undefined, customDefaultsMerge, stack);\n        stack['delete'](srcValue);\n      }\n      return objValue;\n    }\n\n    /**\n     * Used by `_.omit` to customize its `_.cloneDeep` use to only clone plain\n     * objects.\n     *\n     * @private\n     * @param {*} value The value to inspect.\n     * @param {string} key The key of the property to inspect.\n     * @returns {*} Returns the uncloned value or `undefined` to defer cloning to `_.cloneDeep`.\n     */\n    function customOmitClone(value) {\n      return isPlainObject(value) ? undefined : value;\n    }\n\n    /**\n     * A specialized version of `baseIsEqualDeep` for arrays with support for\n     * partial deep comparisons.\n     *\n     * @private\n     * @param {Array} array The array to compare.\n     * @param {Array} other The other array to compare.\n     * @param {number} bitmask The bitmask flags. See `baseIsEqual` for more details.\n     * @param {Function} customizer The function to customize comparisons.\n     * @param {Function} equalFunc The function to determine equivalents of values.\n     * @param {Object} stack Tracks traversed `array` and `other` objects.\n     * @returns {boolean} Returns `true` if the arrays are equivalent, else `false`.\n     */\n    function equalArrays(array, other, bitmask, customizer, equalFunc, stack) {\n      var isPartial = bitmask & COMPARE_PARTIAL_FLAG,\n          arrLength = array.length,\n          othLength = other.length;\n\n      if (arrLength != othLength && !(isPartial && othLength > arrLength)) {\n        return false;\n      }\n      // Check that cyclic values are equal.\n      var arrStacked = stack.get(array);\n      var othStacked = stack.get(other);\n      if (arrStacked && othStacked) {\n        return arrStacked == other && othStacked == array;\n      }\n      var index = -1,\n          result = true,\n          seen = (bitmask & COMPARE_UNORDERED_FLAG) ? new SetCache : undefined;\n\n      stack.set(array, other);\n      stack.set(other, array);\n\n      // Ignore non-index properties.\n      while (++index < arrLength) {\n        var arrValue = array[index],\n            othValue = other[index];\n\n        if (customizer) {\n          var compared = isPartial\n            ? customizer(othValue, arrValue, index, other, array, stack)\n            : customizer(arrValue, othValue, index, array, other, stack);\n        }\n        if (compared !== undefined) {\n          if (compared) {\n            continue;\n          }\n          result = false;\n          break;\n        }\n        // Recursively compare arrays (susceptible to call stack limits).\n        if (seen) {\n          if (!arraySome(other, function(othValue, othIndex) {\n                if (!cacheHas(seen, othIndex) &&\n                    (arrValue === othValue || equalFunc(arrValue, othValue, bitmask, customizer, stack))) {\n                  return seen.push(othIndex);\n                }\n              })) {\n            result = false;\n            break;\n          }\n        } else if (!(\n              arrValue === othValue ||\n                equalFunc(arrValue, othValue, bitmask, customizer, stack)\n            )) {\n          result = false;\n          break;\n        }\n      }\n      stack['delete'](array);\n      stack['delete'](other);\n      return result;\n    }\n\n    /**\n     * A specialized version of `baseIsEqualDeep` for comparing objects of\n     * the same `toStringTag`.\n     *\n     * **Note:** This function only supports comparing values with tags of\n     * `Boolean`, `Date`, `Error`, `Number`, `RegExp`, or `String`.\n     *\n     * @private\n     * @param {Object} object The object to compare.\n     * @param {Object} other The other object to compare.\n     * @param {string} tag The `toStringTag` of the objects to compare.\n     * @param {number} bitmask The bitmask flags. See `baseIsEqual` for more details.\n     * @param {Function} customizer The function to customize comparisons.\n     * @param {Function} equalFunc The function to determine equivalents of values.\n     * @param {Object} stack Tracks traversed `object` and `other` objects.\n     * @returns {boolean} Returns `true` if the objects are equivalent, else `false`.\n     */\n    function equalByTag(object, other, tag, bitmask, customizer, equalFunc, stack) {\n      switch (tag) {\n        case dataViewTag:\n          if ((object.byteLength != other.byteLength) ||\n              (object.byteOffset != other.byteOffset)) {\n            return false;\n          }\n          object = object.buffer;\n          other = other.buffer;\n\n        case arrayBufferTag:\n          if ((object.byteLength != other.byteLength) ||\n              !equalFunc(new Uint8Array(object), new Uint8Array(other))) {\n            return false;\n          }\n          return true;\n\n        case boolTag:\n        case dateTag:\n        case numberTag:\n          // Coerce booleans to `1` or `0` and dates to milliseconds.\n          // Invalid dates are coerced to `NaN`.\n          return eq(+object, +other);\n\n        case errorTag:\n          return object.name == other.name && object.message == other.message;\n\n        case regexpTag:\n        case stringTag:\n          // Coerce regexes to strings and treat strings, primitives and objects,\n          // as equal. See http://www.ecma-international.org/ecma-262/7.0/#sec-regexp.prototype.tostring\n          // for more details.\n          return object == (other + '');\n\n        case mapTag:\n          var convert = mapToArray;\n\n        case setTag:\n          var isPartial = bitmask & COMPARE_PARTIAL_FLAG;\n          convert || (convert = setToArray);\n\n          if (object.size != other.size && !isPartial) {\n            return false;\n          }\n          // Assume cyclic values are equal.\n          var stacked = stack.get(object);\n          if (stacked) {\n            return stacked == other;\n          }\n          bitmask |= COMPARE_UNORDERED_FLAG;\n\n          // Recursively compare objects (susceptible to call stack limits).\n          stack.set(object, other);\n          var result = equalArrays(convert(object), convert(other), bitmask, customizer, equalFunc, stack);\n          stack['delete'](object);\n          return result;\n\n        case symbolTag:\n          if (symbolValueOf) {\n            return symbolValueOf.call(object) == symbolValueOf.call(other);\n          }\n      }\n      return false;\n    }\n\n    /**\n     * A specialized version of `baseIsEqualDeep` for objects with support for\n     * partial deep comparisons.\n     *\n     * @private\n     * @param {Object} object The object to compare.\n     * @param {Object} other The other object to compare.\n     * @param {number} bitmask The bitmask flags. See `baseIsEqual` for more details.\n     * @param {Function} customizer The function to customize comparisons.\n     * @param {Function} equalFunc The function to determine equivalents of values.\n     * @param {Object} stack Tracks traversed `object` and `other` objects.\n     * @returns {boolean} Returns `true` if the objects are equivalent, else `false`.\n     */\n    function equalObjects(object, other, bitmask, customizer, equalFunc, stack) {\n      var isPartial = bitmask & COMPARE_PARTIAL_FLAG,\n          objProps = getAllKeys(object),\n          objLength = objProps.length,\n          othProps = getAllKeys(other),\n          othLength = othProps.length;\n\n      if (objLength != othLength && !isPartial) {\n        return false;\n      }\n      var index = objLength;\n      while (index--) {\n        var key = objProps[index];\n        if (!(isPartial ? key in other : hasOwnProperty.call(other, key))) {\n          return false;\n        }\n      }\n      // Check that cyclic values are equal.\n      var objStacked = stack.get(object);\n      var othStacked = stack.get(other);\n      if (objStacked && othStacked) {\n        return objStacked == other && othStacked == object;\n      }\n      var result = true;\n      stack.set(object, other);\n      stack.set(other, object);\n\n      var skipCtor = isPartial;\n      while (++index < objLength) {\n        key = objProps[index];\n        var objValue = object[key],\n            othValue = other[key];\n\n        if (customizer) {\n          var compared = isPartial\n            ? customizer(othValue, objValue, key, other, object, stack)\n            : customizer(objValue, othValue, key, object, other, stack);\n        }\n        // Recursively compare objects (susceptible to call stack limits).\n        if (!(compared === undefined\n              ? (objValue === othValue || equalFunc(objValue, othValue, bitmask, customizer, stack))\n              : compared\n            )) {\n          result = false;\n          break;\n        }\n        skipCtor || (skipCtor = key == 'constructor');\n      }\n      if (result && !skipCtor) {\n        var objCtor = object.constructor,\n            othCtor = other.constructor;\n\n        // Non `Object` object instances with different constructors are not equal.\n        if (objCtor != othCtor &&\n            ('constructor' in object && 'constructor' in other) &&\n            !(typeof objCtor == 'function' && objCtor instanceof objCtor &&\n              typeof othCtor == 'function' && othCtor instanceof othCtor)) {\n          result = false;\n        }\n      }\n      stack['delete'](object);\n      stack['delete'](other);\n      return result;\n    }\n\n    /**\n     * A specialized version of `baseRest` which flattens the rest array.\n     *\n     * @private\n     * @param {Function} func The function to apply a rest parameter to.\n     * @returns {Function} Returns the new function.\n     */\n    function flatRest(func) {\n      return setToString(overRest(func, undefined, flatten), func + '');\n    }\n\n    /**\n     * Creates an array of own enumerable property names and symbols of `object`.\n     *\n     * @private\n     * @param {Object} object The object to query.\n     * @returns {Array} Returns the array of property names and symbols.\n     */\n    function getAllKeys(object) {\n      return baseGetAllKeys(object, keys, getSymbols);\n    }\n\n    /**\n     * Creates an array of own and inherited enumerable property names and\n     * symbols of `object`.\n     *\n     * @private\n     * @param {Object} object The object to query.\n     * @returns {Array} Returns the array of property names and symbols.\n     */\n    function getAllKeysIn(object) {\n      return baseGetAllKeys(object, keysIn, getSymbolsIn);\n    }\n\n    /**\n     * Gets metadata for `func`.\n     *\n     * @private\n     * @param {Function} func The function to query.\n     * @returns {*} Returns the metadata for `func`.\n     */\n    var getData = !metaMap ? noop : function(func) {\n      return metaMap.get(func);\n    };\n\n    /**\n     * Gets the name of `func`.\n     *\n     * @private\n     * @param {Function} func The function to query.\n     * @returns {string} Returns the function name.\n     */\n    function getFuncName(func) {\n      var result = (func.name + ''),\n          array = realNames[result],\n          length = hasOwnProperty.call(realNames, result) ? array.length : 0;\n\n      while (length--) {\n        var data = array[length],\n            otherFunc = data.func;\n        if (otherFunc == null || otherFunc == func) {\n          return data.name;\n        }\n      }\n      return result;\n    }\n\n    /**\n     * Gets the argument placeholder value for `func`.\n     *\n     * @private\n     * @param {Function} func The function to inspect.\n     * @returns {*} Returns the placeholder value.\n     */\n    function getHolder(func) {\n      var object = hasOwnProperty.call(lodash, 'placeholder') ? lodash : func;\n      return object.placeholder;\n    }\n\n    /**\n     * Gets the appropriate \"iteratee\" function. If `_.iteratee` is customized,\n     * this function returns the custom method, otherwise it returns `baseIteratee`.\n     * If arguments are provided, the chosen function is invoked with them and\n     * its result is returned.\n     *\n     * @private\n     * @param {*} [value] The value to convert to an iteratee.\n     * @param {number} [arity] The arity of the created iteratee.\n     * @returns {Function} Returns the chosen function or its result.\n     */\n    function getIteratee() {\n      var result = lodash.iteratee || iteratee;\n      result = result === iteratee ? baseIteratee : result;\n      return arguments.length ? result(arguments[0], arguments[1]) : result;\n    }\n\n    /**\n     * Gets the data for `map`.\n     *\n     * @private\n     * @param {Object} map The map to query.\n     * @param {string} key The reference key.\n     * @returns {*} Returns the map data.\n     */\n    function getMapData(map, key) {\n      var data = map.__data__;\n      return isKeyable(key)\n        ? data[typeof key == 'string' ? 'string' : 'hash']\n        : data.map;\n    }\n\n    /**\n     * Gets the property names, values, and compare flags of `object`.\n     *\n     * @private\n     * @param {Object} object The object to query.\n     * @returns {Array} Returns the match data of `object`.\n     */\n    function getMatchData(object) {\n      var result = keys(object),\n          length = result.length;\n\n      while (length--) {\n        var key = result[length],\n            value = object[key];\n\n        result[length] = [key, value, isStrictComparable(value)];\n      }\n      return result;\n    }\n\n    /**\n     * Gets the native function at `key` of `object`.\n     *\n     * @private\n     * @param {Object} object The object to query.\n     * @param {string} key The key of the method to get.\n     * @returns {*} Returns the function if it's native, else `undefined`.\n     */\n    function getNative(object, key) {\n      var value = getValue(object, key);\n      return baseIsNative(value) ? value : undefined;\n    }\n\n    /**\n     * A specialized version of `baseGetTag` which ignores `Symbol.toStringTag` values.\n     *\n     * @private\n     * @param {*} value The value to query.\n     * @returns {string} Returns the raw `toStringTag`.\n     */\n    function getRawTag(value) {\n      var isOwn = hasOwnProperty.call(value, symToStringTag),\n          tag = value[symToStringTag];\n\n      try {\n        value[symToStringTag] = undefined;\n        var unmasked = true;\n      } catch (e) {}\n\n      var result = nativeObjectToString.call(value);\n      if (unmasked) {\n        if (isOwn) {\n          value[symToStringTag] = tag;\n        } else {\n          delete value[symToStringTag];\n        }\n      }\n      return result;\n    }\n\n    /**\n     * Creates an array of the own enumerable symbols of `object`.\n     *\n     * @private\n     * @param {Object} object The object to query.\n     * @returns {Array} Returns the array of symbols.\n     */\n    var getSymbols = !nativeGetSymbols ? stubArray : function(object) {\n      if (object == null) {\n        return [];\n      }\n      object = Object(object);\n      return arrayFilter(nativeGetSymbols(object), function(symbol) {\n        return propertyIsEnumerable.call(object, symbol);\n      });\n    };\n\n    /**\n     * Creates an array of the own and inherited enumerable symbols of `object`.\n     *\n     * @private\n     * @param {Object} object The object to query.\n     * @returns {Array} Returns the array of symbols.\n     */\n    var getSymbolsIn = !nativeGetSymbols ? stubArray : function(object) {\n      var result = [];\n      while (object) {\n        arrayPush(result, getSymbols(object));\n        object = getPrototype(object);\n      }\n      return result;\n    };\n\n    /**\n     * Gets the `toStringTag` of `value`.\n     *\n     * @private\n     * @param {*} value The value to query.\n     * @returns {string} Returns the `toStringTag`.\n     */\n    var getTag = baseGetTag;\n\n    // Fallback for data views, maps, sets, and weak maps in IE 11 and promises in Node.js < 6.\n    if ((DataView && getTag(new DataView(new ArrayBuffer(1))) != dataViewTag) ||\n        (Map && getTag(new Map) != mapTag) ||\n        (Promise && getTag(Promise.resolve()) != promiseTag) ||\n        (Set && getTag(new Set) != setTag) ||\n        (WeakMap && getTag(new WeakMap) != weakMapTag)) {\n      getTag = function(value) {\n        var result = baseGetTag(value),\n            Ctor = result == objectTag ? value.constructor : undefined,\n            ctorString = Ctor ? toSource(Ctor) : '';\n\n        if (ctorString) {\n          switch (ctorString) {\n            case dataViewCtorString: return dataViewTag;\n            case mapCtorString: return mapTag;\n            case promiseCtorString: return promiseTag;\n            case setCtorString: return setTag;\n            case weakMapCtorString: return weakMapTag;\n          }\n        }\n        return result;\n      };\n    }\n\n    /**\n     * Gets the view, applying any `transforms` to the `start` and `end` positions.\n     *\n     * @private\n     * @param {number} start The start of the view.\n     * @param {number} end The end of the view.\n     * @param {Array} transforms The transformations to apply to the view.\n     * @returns {Object} Returns an object containing the `start` and `end`\n     *  positions of the view.\n     */\n    function getView(start, end, transforms) {\n      var index = -1,\n          length = transforms.length;\n\n      while (++index < length) {\n        var data = transforms[index],\n            size = data.size;\n\n        switch (data.type) {\n          case 'drop':      start += size; break;\n          case 'dropRight': end -= size; break;\n          case 'take':      end = nativeMin(end, start + size); break;\n          case 'takeRight': start = nativeMax(start, end - size); break;\n        }\n      }\n      return { 'start': start, 'end': end };\n    }\n\n    /**\n     * Extracts wrapper details from the `source` body comment.\n     *\n     * @private\n     * @param {string} source The source to inspect.\n     * @returns {Array} Returns the wrapper details.\n     */\n    function getWrapDetails(source) {\n      var match = source.match(reWrapDetails);\n      return match ? match[1].split(reSplitDetails) : [];\n    }\n\n    /**\n     * Checks if `path` exists on `object`.\n     *\n     * @private\n     * @param {Object} object The object to query.\n     * @param {Array|string} path The path to check.\n     * @param {Function} hasFunc The function to check properties.\n     * @returns {boolean} Returns `true` if `path` exists, else `false`.\n     */\n    function hasPath(object, path, hasFunc) {\n      path = castPath(path, object);\n\n      var index = -1,\n          length = path.length,\n          result = false;\n\n      while (++index < length) {\n        var key = toKey(path[index]);\n        if (!(result = object != null && hasFunc(object, key))) {\n          break;\n        }\n        object = object[key];\n      }\n      if (result || ++index != length) {\n        return result;\n      }\n      length = object == null ? 0 : object.length;\n      return !!length && isLength(length) && isIndex(key, length) &&\n        (isArray(object) || isArguments(object));\n    }\n\n    /**\n     * Initializes an array clone.\n     *\n     * @private\n     * @param {Array} array The array to clone.\n     * @returns {Array} Returns the initialized clone.\n     */\n    function initCloneArray(array) {\n      var length = array.length,\n          result = new array.constructor(length);\n\n      // Add properties assigned by `RegExp#exec`.\n      if (length && typeof array[0] == 'string' && hasOwnProperty.call(array, 'index')) {\n        result.index = array.index;\n        result.input = array.input;\n      }\n      return result;\n    }\n\n    /**\n     * Initializes an object clone.\n     *\n     * @private\n     * @param {Object} object The object to clone.\n     * @returns {Object} Returns the initialized clone.\n     */\n    function initCloneObject(object) {\n      return (typeof object.constructor == 'function' && !isPrototype(object))\n        ? baseCreate(getPrototype(object))\n        : {};\n    }\n\n    /**\n     * Initializes an object clone based on its `toStringTag`.\n     *\n     * **Note:** This function only supports cloning values with tags of\n     * `Boolean`, `Date`, `Error`, `Map`, `Number`, `RegExp`, `Set`, or `String`.\n     *\n     * @private\n     * @param {Object} object The object to clone.\n     * @param {string} tag The `toStringTag` of the object to clone.\n     * @param {boolean} [isDeep] Specify a deep clone.\n     * @returns {Object} Returns the initialized clone.\n     */\n    function initCloneByTag(object, tag, isDeep) {\n      var Ctor = object.constructor;\n      switch (tag) {\n        case arrayBufferTag:\n          return cloneArrayBuffer(object);\n\n        case boolTag:\n        case dateTag:\n          return new Ctor(+object);\n\n        case dataViewTag:\n          return cloneDataView(object, isDeep);\n\n        case float32Tag: case float64Tag:\n        case int8Tag: case int16Tag: case int32Tag:\n        case uint8Tag: case uint8ClampedTag: case uint16Tag: case uint32Tag:\n          return cloneTypedArray(object, isDeep);\n\n        case mapTag:\n          return new Ctor;\n\n        case numberTag:\n        case stringTag:\n          return new Ctor(object);\n\n        case regexpTag:\n          return cloneRegExp(object);\n\n        case setTag:\n          return new Ctor;\n\n        case symbolTag:\n          return cloneSymbol(object);\n      }\n    }\n\n    /**\n     * Inserts wrapper `details` in a comment at the top of the `source` body.\n     *\n     * @private\n     * @param {string} source The source to modify.\n     * @returns {Array} details The details to insert.\n     * @returns {string} Returns the modified source.\n     */\n    function insertWrapDetails(source, details) {\n      var length = details.length;\n      if (!length) {\n        return source;\n      }\n      var lastIndex = length - 1;\n      details[lastIndex] = (length > 1 ? '& ' : '') + details[lastIndex];\n      details = details.join(length > 2 ? ', ' : ' ');\n      return source.replace(reWrapComment, '{\\n/* [wrapped with ' + details + '] */\\n');\n    }\n\n    /**\n     * Checks if `value` is a flattenable `arguments` object or array.\n     *\n     * @private\n     * @param {*} value The value to check.\n     * @returns {boolean} Returns `true` if `value` is flattenable, else `false`.\n     */\n    function isFlattenable(value) {\n      return isArray(value) || isArguments(value) ||\n        !!(spreadableSymbol && value && value[spreadableSymbol]);\n    }\n\n    /**\n     * Checks if `value` is a valid array-like index.\n     *\n     * @private\n     * @param {*} value The value to check.\n     * @param {number} [length=MAX_SAFE_INTEGER] The upper bounds of a valid index.\n     * @returns {boolean} Returns `true` if `value` is a valid index, else `false`.\n     */\n    function isIndex(value, length) {\n      var type = typeof value;\n      length = length == null ? MAX_SAFE_INTEGER : length;\n\n      return !!length &&\n        (type == 'number' ||\n          (type != 'symbol' && reIsUint.test(value))) &&\n            (value > -1 && value % 1 == 0 && value < length);\n    }\n\n    /**\n     * Checks if the given arguments are from an iteratee call.\n     *\n     * @private\n     * @param {*} value The potential iteratee value argument.\n     * @param {*} index The potential iteratee index or key argument.\n     * @param {*} object The potential iteratee object argument.\n     * @returns {boolean} Returns `true` if the arguments are from an iteratee call,\n     *  else `false`.\n     */\n    function isIterateeCall(value, index, object) {\n      if (!isObject(object)) {\n        return false;\n      }\n      var type = typeof index;\n      if (type == 'number'\n            ? (isArrayLike(object) && isIndex(index, object.length))\n            : (type == 'string' && index in object)\n          ) {\n        return eq(object[index], value);\n      }\n      return false;\n    }\n\n    /**\n     * Checks if `value` is a property name and not a property path.\n     *\n     * @private\n     * @param {*} value The value to check.\n     * @param {Object} [object] The object to query keys on.\n     * @returns {boolean} Returns `true` if `value` is a property name, else `false`.\n     */\n    function isKey(value, object) {\n      if (isArray(value)) {\n        return false;\n      }\n      var type = typeof value;\n      if (type == 'number' || type == 'symbol' || type == 'boolean' ||\n          value == null || isSymbol(value)) {\n        return true;\n      }\n      return reIsPlainProp.test(value) || !reIsDeepProp.test(value) ||\n        (object != null && value in Object(object));\n    }\n\n    /**\n     * Checks if `value` is suitable for use as unique object key.\n     *\n     * @private\n     * @param {*} value The value to check.\n     * @returns {boolean} Returns `true` if `value` is suitable, else `false`.\n     */\n    function isKeyable(value) {\n      var type = typeof value;\n      return (type == 'string' || type == 'number' || type == 'symbol' || type == 'boolean')\n        ? (value !== '__proto__')\n        : (value === null);\n    }\n\n    /**\n     * Checks if `func` has a lazy counterpart.\n     *\n     * @private\n     * @param {Function} func The function to check.\n     * @returns {boolean} Returns `true` if `func` has a lazy counterpart,\n     *  else `false`.\n     */\n    function isLaziable(func) {\n      var funcName = getFuncName(func),\n          other = lodash[funcName];\n\n      if (typeof other != 'function' || !(funcName in LazyWrapper.prototype)) {\n        return false;\n      }\n      if (func === other) {\n        return true;\n      }\n      var data = getData(other);\n      return !!data && func === data[0];\n    }\n\n    /**\n     * Checks if `func` has its source masked.\n     *\n     * @private\n     * @param {Function} func The function to check.\n     * @returns {boolean} Returns `true` if `func` is masked, else `false`.\n     */\n    function isMasked(func) {\n      return !!maskSrcKey && (maskSrcKey in func);\n    }\n\n    /**\n     * Checks if `func` is capable of being masked.\n     *\n     * @private\n     * @param {*} value The value to check.\n     * @returns {boolean} Returns `true` if `func` is maskable, else `false`.\n     */\n    var isMaskable = coreJsData ? isFunction : stubFalse;\n\n    /**\n     * Checks if `value` is likely a prototype object.\n     *\n     * @private\n     * @param {*} value The value to check.\n     * @returns {boolean} Returns `true` if `value` is a prototype, else `false`.\n     */\n    function isPrototype(value) {\n      var Ctor = value && value.constructor,\n          proto = (typeof Ctor == 'function' && Ctor.prototype) || objectProto;\n\n      return value === proto;\n    }\n\n    /**\n     * Checks if `value` is suitable for strict equality comparisons, i.e. `===`.\n     *\n     * @private\n     * @param {*} value The value to check.\n     * @returns {boolean} Returns `true` if `value` if suitable for strict\n     *  equality comparisons, else `false`.\n     */\n    function isStrictComparable(value) {\n      return value === value && !isObject(value);\n    }\n\n    /**\n     * A specialized version of `matchesProperty` for source values suitable\n     * for strict equality comparisons, i.e. `===`.\n     *\n     * @private\n     * @param {string} key The key of the property to get.\n     * @param {*} srcValue The value to match.\n     * @returns {Function} Returns the new spec function.\n     */\n    function matchesStrictComparable(key, srcValue) {\n      return function(object) {\n        if (object == null) {\n          return false;\n        }\n        return object[key] === srcValue &&\n          (srcValue !== undefined || (key in Object(object)));\n      };\n    }\n\n    /**\n     * A specialized version of `_.memoize` which clears the memoized function's\n     * cache when it exceeds `MAX_MEMOIZE_SIZE`.\n     *\n     * @private\n     * @param {Function} func The function to have its output memoized.\n     * @returns {Function} Returns the new memoized function.\n     */\n    function memoizeCapped(func) {\n      var result = memoize(func, function(key) {\n        if (cache.size === MAX_MEMOIZE_SIZE) {\n          cache.clear();\n        }\n        return key;\n      });\n\n      var cache = result.cache;\n      return result;\n    }\n\n    /**\n     * Merges the function metadata of `source` into `data`.\n     *\n     * Merging metadata reduces the number of wrappers used to invoke a function.\n     * This is possible because methods like `_.bind`, `_.curry`, and `_.partial`\n     * may be applied regardless of execution order. Methods like `_.ary` and\n     * `_.rearg` modify function arguments, making the order in which they are\n     * executed important, preventing the merging of metadata. However, we make\n     * an exception for a safe combined case where curried functions have `_.ary`\n     * and or `_.rearg` applied.\n     *\n     * @private\n     * @param {Array} data The destination metadata.\n     * @param {Array} source The source metadata.\n     * @returns {Array} Returns `data`.\n     */\n    function mergeData(data, source) {\n      var bitmask = data[1],\n          srcBitmask = source[1],\n          newBitmask = bitmask | srcBitmask,\n          isCommon = newBitmask < (WRAP_BIND_FLAG | WRAP_BIND_KEY_FLAG | WRAP_ARY_FLAG);\n\n      var isCombo =\n        ((srcBitmask == WRAP_ARY_FLAG) && (bitmask == WRAP_CURRY_FLAG)) ||\n        ((srcBitmask == WRAP_ARY_FLAG) && (bitmask == WRAP_REARG_FLAG) && (data[7].length <= source[8])) ||\n        ((srcBitmask == (WRAP_ARY_FLAG | WRAP_REARG_FLAG)) && (source[7].length <= source[8]) && (bitmask == WRAP_CURRY_FLAG));\n\n      // Exit early if metadata can't be merged.\n      if (!(isCommon || isCombo)) {\n        return data;\n      }\n      // Use source `thisArg` if available.\n      if (srcBitmask & WRAP_BIND_FLAG) {\n        data[2] = source[2];\n        // Set when currying a bound function.\n        newBitmask |= bitmask & WRAP_BIND_FLAG ? 0 : WRAP_CURRY_BOUND_FLAG;\n      }\n      // Compose partial arguments.\n      var value = source[3];\n      if (value) {\n        var partials = data[3];\n        data[3] = partials ? composeArgs(partials, value, source[4]) : value;\n        data[4] = partials ? replaceHolders(data[3], PLACEHOLDER) : source[4];\n      }\n      // Compose partial right arguments.\n      value = source[5];\n      if (value) {\n        partials = data[5];\n        data[5] = partials ? composeArgsRight(partials, value, source[6]) : value;\n        data[6] = partials ? replaceHolders(data[5], PLACEHOLDER) : source[6];\n      }\n      // Use source `argPos` if available.\n      value = source[7];\n      if (value) {\n        data[7] = value;\n      }\n      // Use source `ary` if it's smaller.\n      if (srcBitmask & WRAP_ARY_FLAG) {\n        data[8] = data[8] == null ? source[8] : nativeMin(data[8], source[8]);\n      }\n      // Use source `arity` if one is not provided.\n      if (data[9] == null) {\n        data[9] = source[9];\n      }\n      // Use source `func` and merge bitmasks.\n      data[0] = source[0];\n      data[1] = newBitmask;\n\n      return data;\n    }\n\n    /**\n     * This function is like\n     * [`Object.keys`](http://ecma-international.org/ecma-262/7.0/#sec-object.keys)\n     * except that it includes inherited enumerable properties.\n     *\n     * @private\n     * @param {Object} object The object to query.\n     * @returns {Array} Returns the array of property names.\n     */\n    function nativeKeysIn(object) {\n      var result = [];\n      if (object != null) {\n        for (var key in Object(object)) {\n          result.push(key);\n        }\n      }\n      return result;\n    }\n\n    /**\n     * Converts `value` to a string using `Object.prototype.toString`.\n     *\n     * @private\n     * @param {*} value The value to convert.\n     * @returns {string} Returns the converted string.\n     */\n    function objectToString(value) {\n      return nativeObjectToString.call(value);\n    }\n\n    /**\n     * A specialized version of `baseRest` which transforms the rest array.\n     *\n     * @private\n     * @param {Function} func The function to apply a rest parameter to.\n     * @param {number} [start=func.length-1] The start position of the rest parameter.\n     * @param {Function} transform The rest array transform.\n     * @returns {Function} Returns the new function.\n     */\n    function overRest(func, start, transform) {\n      start = nativeMax(start === undefined ? (func.length - 1) : start, 0);\n      return function() {\n        var args = arguments,\n            index = -1,\n            length = nativeMax(args.length - start, 0),\n            array = Array(length);\n\n        while (++index < length) {\n          array[index] = args[start + index];\n        }\n        index = -1;\n        var otherArgs = Array(start + 1);\n        while (++index < start) {\n          otherArgs[index] = args[index];\n        }\n        otherArgs[start] = transform(array);\n        return apply(func, this, otherArgs);\n      };\n    }\n\n    /**\n     * Gets the parent value at `path` of `object`.\n     *\n     * @private\n     * @param {Object} object The object to query.\n     * @param {Array} path The path to get the parent value of.\n     * @returns {*} Returns the parent value.\n     */\n    function parent(object, path) {\n      return path.length < 2 ? object : baseGet(object, baseSlice(path, 0, -1));\n    }\n\n    /**\n     * Reorder `array` according to the specified indexes where the element at\n     * the first index is assigned as the first element, the element at\n     * the second index is assigned as the second element, and so on.\n     *\n     * @private\n     * @param {Array} array The array to reorder.\n     * @param {Array} indexes The arranged array indexes.\n     * @returns {Array} Returns `array`.\n     */\n    function reorder(array, indexes) {\n      var arrLength = array.length,\n          length = nativeMin(indexes.length, arrLength),\n          oldArray = copyArray(array);\n\n      while (length--) {\n        var index = indexes[length];\n        array[length] = isIndex(index, arrLength) ? oldArray[index] : undefined;\n      }\n      return array;\n    }\n\n    /**\n     * Gets the value at `key`, unless `key` is \"__proto__\" or \"constructor\".\n     *\n     * @private\n     * @param {Object} object The object to query.\n     * @param {string} key The key of the property to get.\n     * @returns {*} Returns the property value.\n     */\n    function safeGet(object, key) {\n      if (key === 'constructor' && typeof object[key] === 'function') {\n        return;\n      }\n\n      if (key == '__proto__') {\n        return;\n      }\n\n      return object[key];\n    }\n\n    /**\n     * Sets metadata for `func`.\n     *\n     * **Note:** If this function becomes hot, i.e. is invoked a lot in a short\n     * period of time, it will trip its breaker and transition to an identity\n     * function to avoid garbage collection pauses in V8. See\n     * [V8 issue 2070](https://bugs.chromium.org/p/v8/issues/detail?id=2070)\n     * for more details.\n     *\n     * @private\n     * @param {Function} func The function to associate metadata with.\n     * @param {*} data The metadata.\n     * @returns {Function} Returns `func`.\n     */\n    var setData = shortOut(baseSetData);\n\n    /**\n     * A simple wrapper around the global [`setTimeout`](https://mdn.io/setTimeout).\n     *\n     * @private\n     * @param {Function} func The function to delay.\n     * @param {number} wait The number of milliseconds to delay invocation.\n     * @returns {number|Object} Returns the timer id or timeout object.\n     */\n    var setTimeout = ctxSetTimeout || function(func, wait) {\n      return root.setTimeout(func, wait);\n    };\n\n    /**\n     * Sets the `toString` method of `func` to return `string`.\n     *\n     * @private\n     * @param {Function} func The function to modify.\n     * @param {Function} string The `toString` result.\n     * @returns {Function} Returns `func`.\n     */\n    var setToString = shortOut(baseSetToString);\n\n    /**\n     * Sets the `toString` method of `wrapper` to mimic the source of `reference`\n     * with wrapper details in a comment at the top of the source body.\n     *\n     * @private\n     * @param {Function} wrapper The function to modify.\n     * @param {Function} reference The reference function.\n     * @param {number} bitmask The bitmask flags. See `createWrap` for more details.\n     * @returns {Function} Returns `wrapper`.\n     */\n    function setWrapToString(wrapper, reference, bitmask) {\n      var source = (reference + '');\n      return setToString(wrapper, insertWrapDetails(source, updateWrapDetails(getWrapDetails(source), bitmask)));\n    }\n\n    /**\n     * Creates a function that'll short out and invoke `identity` instead\n     * of `func` when it's called `HOT_COUNT` or more times in `HOT_SPAN`\n     * milliseconds.\n     *\n     * @private\n     * @param {Function} func The function to restrict.\n     * @returns {Function} Returns the new shortable function.\n     */\n    function shortOut(func) {\n      var count = 0,\n          lastCalled = 0;\n\n      return function() {\n        var stamp = nativeNow(),\n            remaining = HOT_SPAN - (stamp - lastCalled);\n\n        lastCalled = stamp;\n        if (remaining > 0) {\n          if (++count >= HOT_COUNT) {\n            return arguments[0];\n          }\n        } else {\n          count = 0;\n        }\n        return func.apply(undefined, arguments);\n      };\n    }\n\n    /**\n     * A specialized version of `_.shuffle` which mutates and sets the size of `array`.\n     *\n     * @private\n     * @param {Array} array The array to shuffle.\n     * @param {number} [size=array.length] The size of `array`.\n     * @returns {Array} Returns `array`.\n     */\n    function shuffleSelf(array, size) {\n      var index = -1,\n          length = array.length,\n          lastIndex = length - 1;\n\n      size = size === undefined ? length : size;\n      while (++index < size) {\n        var rand = baseRandom(index, lastIndex),\n            value = array[rand];\n\n        array[rand] = array[index];\n        array[index] = value;\n      }\n      array.length = size;\n      return array;\n    }\n\n    /**\n     * Converts `string` to a property path array.\n     *\n     * @private\n     * @param {string} string The string to convert.\n     * @returns {Array} Returns the property path array.\n     */\n    var stringToPath = memoizeCapped(function(string) {\n      var result = [];\n      if (string.charCodeAt(0) === 46 /* . */) {\n        result.push('');\n      }\n      string.replace(rePropName, function(match, number, quote, subString) {\n        result.push(quote ? subString.replace(reEscapeChar, '$1') : (number || match));\n      });\n      return result;\n    });\n\n    /**\n     * Converts `value` to a string key if it's not a string or symbol.\n     *\n     * @private\n     * @param {*} value The value to inspect.\n     * @returns {string|symbol} Returns the key.\n     */\n    function toKey(value) {\n      if (typeof value == 'string' || isSymbol(value)) {\n        return value;\n      }\n      var result = (value + '');\n      return (result == '0' && (1 / value) == -INFINITY) ? '-0' : result;\n    }\n\n    /**\n     * Converts `func` to its source code.\n     *\n     * @private\n     * @param {Function} func The function to convert.\n     * @returns {string} Returns the source code.\n     */\n    function toSource(func) {\n      if (func != null) {\n        try {\n          return funcToString.call(func);\n        } catch (e) {}\n        try {\n          return (func + '');\n        } catch (e) {}\n      }\n      return '';\n    }\n\n    /**\n     * Updates wrapper `details` based on `bitmask` flags.\n     *\n     * @private\n     * @returns {Array} details The details to modify.\n     * @param {number} bitmask The bitmask flags. See `createWrap` for more details.\n     * @returns {Array} Returns `details`.\n     */\n    function updateWrapDetails(details, bitmask) {\n      arrayEach(wrapFlags, function(pair) {\n        var value = '_.' + pair[0];\n        if ((bitmask & pair[1]) && !arrayIncludes(details, value)) {\n          details.push(value);\n        }\n      });\n      return details.sort();\n    }\n\n    /**\n     * Creates a clone of `wrapper`.\n     *\n     * @private\n     * @param {Object} wrapper The wrapper to clone.\n     * @returns {Object} Returns the cloned wrapper.\n     */\n    function wrapperClone(wrapper) {\n      if (wrapper instanceof LazyWrapper) {\n        return wrapper.clone();\n      }\n      var result = new LodashWrapper(wrapper.__wrapped__, wrapper.__chain__);\n      result.__actions__ = copyArray(wrapper.__actions__);\n      result.__index__  = wrapper.__index__;\n      result.__values__ = wrapper.__values__;\n      return result;\n    }\n\n    /*------------------------------------------------------------------------*/\n\n    /**\n     * Creates an array of elements split into groups the length of `size`.\n     * If `array` can't be split evenly, the final chunk will be the remaining\n     * elements.\n     *\n     * @static\n     * @memberOf _\n     * @since 3.0.0\n     * @category Array\n     * @param {Array} array The array to process.\n     * @param {number} [size=1] The length of each chunk\n     * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.\n     * @returns {Array} Returns the new array of chunks.\n     * @example\n     *\n     * _.chunk(['a', 'b', 'c', 'd'], 2);\n     * // => [['a', 'b'], ['c', 'd']]\n     *\n     * _.chunk(['a', 'b', 'c', 'd'], 3);\n     * // => [['a', 'b', 'c'], ['d']]\n     */\n    function chunk(array, size, guard) {\n      if ((guard ? isIterateeCall(array, size, guard) : size === undefined)) {\n        size = 1;\n      } else {\n        size = nativeMax(toInteger(size), 0);\n      }\n      var length = array == null ? 0 : array.length;\n      if (!length || size < 1) {\n        return [];\n      }\n      var index = 0,\n          resIndex = 0,\n          result = Array(nativeCeil(length / size));\n\n      while (index < length) {\n        result[resIndex++] = baseSlice(array, index, (index += size));\n      }\n      return result;\n    }\n\n    /**\n     * Creates an array with all falsey values removed. The values `false`, `null`,\n     * `0`, `\"\"`, `undefined`, and `NaN` are falsey.\n     *\n     * @static\n     * @memberOf _\n     * @since 0.1.0\n     * @category Array\n     * @param {Array} array The array to compact.\n     * @returns {Array} Returns the new array of filtered values.\n     * @example\n     *\n     * _.compact([0, 1, false, 2, '', 3]);\n     * // => [1, 2, 3]\n     */\n    function compact(array) {\n      var index = -1,\n          length = array == null ? 0 : array.length,\n          resIndex = 0,\n          result = [];\n\n      while (++index < length) {\n        var value = array[index];\n        if (value) {\n          result[resIndex++] = value;\n        }\n      }\n      return result;\n    }\n\n    /**\n     * Creates a new array concatenating `array` with any additional arrays\n     * and/or values.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Array\n     * @param {Array} array The array to concatenate.\n     * @param {...*} [values] The values to concatenate.\n     * @returns {Array} Returns the new concatenated array.\n     * @example\n     *\n     * var array = [1];\n     * var other = _.concat(array, 2, [3], [[4]]);\n     *\n     * console.log(other);\n     * // => [1, 2, 3, [4]]\n     *\n     * console.log(array);\n     * // => [1]\n     */\n    function concat() {\n      var length = arguments.length;\n      if (!length) {\n        return [];\n      }\n      var args = Array(length - 1),\n          array = arguments[0],\n          index = length;\n\n      while (index--) {\n        args[index - 1] = arguments[index];\n      }\n      return arrayPush(isArray(array) ? copyArray(array) : [array], baseFlatten(args, 1));\n    }\n\n    /**\n     * Creates an array of `array` values not included in the other given arrays\n     * using [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)\n     * for equality comparisons. The order and references of result values are\n     * determined by the first array.\n     *\n     * **Note:** Unlike `_.pullAll`, this method returns a new array.\n     *\n     * @static\n     * @memberOf _\n     * @since 0.1.0\n     * @category Array\n     * @param {Array} array The array to inspect.\n     * @param {...Array} [values] The values to exclude.\n     * @returns {Array} Returns the new array of filtered values.\n     * @see _.without, _.xor\n     * @example\n     *\n     * _.difference([2, 1], [2, 3]);\n     * // => [1]\n     */\n    var difference = baseRest(function(array, values) {\n      return isArrayLikeObject(array)\n        ? baseDifference(array, baseFlatten(values, 1, isArrayLikeObject, true))\n        : [];\n    });\n\n    /**\n     * This method is like `_.difference` except that it accepts `iteratee` which\n     * is invoked for each element of `array` and `values` to generate the criterion\n     * by which they're compared. The order and references of result values are\n     * determined by the first array. The iteratee is invoked with one argument:\n     * (value).\n     *\n     * **Note:** Unlike `_.pullAllBy`, this method returns a new array.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Array\n     * @param {Array} array The array to inspect.\n     * @param {...Array} [values] The values to exclude.\n     * @param {Function} [iteratee=_.identity] The iteratee invoked per element.\n     * @returns {Array} Returns the new array of filtered values.\n     * @example\n     *\n     * _.differenceBy([2.1, 1.2], [2.3, 3.4], Math.floor);\n     * // => [1.2]\n     *\n     * // The `_.property` iteratee shorthand.\n     * _.differenceBy([{ 'x': 2 }, { 'x': 1 }], [{ 'x': 1 }], 'x');\n     * // => [{ 'x': 2 }]\n     */\n    var differenceBy = baseRest(function(array, values) {\n      var iteratee = last(values);\n      if (isArrayLikeObject(iteratee)) {\n        iteratee = undefined;\n      }\n      return isArrayLikeObject(array)\n        ? baseDifference(array, baseFlatten(values, 1, isArrayLikeObject, true), getIteratee(iteratee, 2))\n        : [];\n    });\n\n    /**\n     * This method is like `_.difference` except that it accepts `comparator`\n     * which is invoked to compare elements of `array` to `values`. The order and\n     * references of result values are determined by the first array. The comparator\n     * is invoked with two arguments: (arrVal, othVal).\n     *\n     * **Note:** Unlike `_.pullAllWith`, this method returns a new array.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Array\n     * @param {Array} array The array to inspect.\n     * @param {...Array} [values] The values to exclude.\n     * @param {Function} [comparator] The comparator invoked per element.\n     * @returns {Array} Returns the new array of filtered values.\n     * @example\n     *\n     * var objects = [{ 'x': 1, 'y': 2 }, { 'x': 2, 'y': 1 }];\n     *\n     * _.differenceWith(objects, [{ 'x': 1, 'y': 2 }], _.isEqual);\n     * // => [{ 'x': 2, 'y': 1 }]\n     */\n    var differenceWith = baseRest(function(array, values) {\n      var comparator = last(values);\n      if (isArrayLikeObject(comparator)) {\n        comparator = undefined;\n      }\n      return isArrayLikeObject(array)\n        ? baseDifference(array, baseFlatten(values, 1, isArrayLikeObject, true), undefined, comparator)\n        : [];\n    });\n\n    /**\n     * Creates a slice of `array` with `n` elements dropped from the beginning.\n     *\n     * @static\n     * @memberOf _\n     * @since 0.5.0\n     * @category Array\n     * @param {Array} array The array to query.\n     * @param {number} [n=1] The number of elements to drop.\n     * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.\n     * @returns {Array} Returns the slice of `array`.\n     * @example\n     *\n     * _.drop([1, 2, 3]);\n     * // => [2, 3]\n     *\n     * _.drop([1, 2, 3], 2);\n     * // => [3]\n     *\n     * _.drop([1, 2, 3], 5);\n     * // => []\n     *\n     * _.drop([1, 2, 3], 0);\n     * // => [1, 2, 3]\n     */\n    function drop(array, n, guard) {\n      var length = array == null ? 0 : array.length;\n      if (!length) {\n        return [];\n      }\n      n = (guard || n === undefined) ? 1 : toInteger(n);\n      return baseSlice(array, n < 0 ? 0 : n, length);\n    }\n\n    /**\n     * Creates a slice of `array` with `n` elements dropped from the end.\n     *\n     * @static\n     * @memberOf _\n     * @since 3.0.0\n     * @category Array\n     * @param {Array} array The array to query.\n     * @param {number} [n=1] The number of elements to drop.\n     * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.\n     * @returns {Array} Returns the slice of `array`.\n     * @example\n     *\n     * _.dropRight([1, 2, 3]);\n     * // => [1, 2]\n     *\n     * _.dropRight([1, 2, 3], 2);\n     * // => [1]\n     *\n     * _.dropRight([1, 2, 3], 5);\n     * // => []\n     *\n     * _.dropRight([1, 2, 3], 0);\n     * // => [1, 2, 3]\n     */\n    function dropRight(array, n, guard) {\n      var length = array == null ? 0 : array.length;\n      if (!length) {\n        return [];\n      }\n      n = (guard || n === undefined) ? 1 : toInteger(n);\n      n = length - n;\n      return baseSlice(array, 0, n < 0 ? 0 : n);\n    }\n\n    /**\n     * Creates a slice of `array` excluding elements dropped from the end.\n     * Elements are dropped until `predicate` returns falsey. The predicate is\n     * invoked with three arguments: (value, index, array).\n     *\n     * @static\n     * @memberOf _\n     * @since 3.0.0\n     * @category Array\n     * @param {Array} array The array to query.\n     * @param {Function} [predicate=_.identity] The function invoked per iteration.\n     * @returns {Array} Returns the slice of `array`.\n     * @example\n     *\n     * var users = [\n     *   { 'user': 'barney',  'active': true },\n     *   { 'user': 'fred',    'active': false },\n     *   { 'user': 'pebbles', 'active': false }\n     * ];\n     *\n     * _.dropRightWhile(users, function(o) { return !o.active; });\n     * // => objects for ['barney']\n     *\n     * // The `_.matches` iteratee shorthand.\n     * _.dropRightWhile(users, { 'user': 'pebbles', 'active': false });\n     * // => objects for ['barney', 'fred']\n     *\n     * // The `_.matchesProperty` iteratee shorthand.\n     * _.dropRightWhile(users, ['active', false]);\n     * // => objects for ['barney']\n     *\n     * // The `_.property` iteratee shorthand.\n     * _.dropRightWhile(users, 'active');\n     * // => objects for ['barney', 'fred', 'pebbles']\n     */\n    function dropRightWhile(array, predicate) {\n      return (array && array.length)\n        ? baseWhile(array, getIteratee(predicate, 3), true, true)\n        : [];\n    }\n\n    /**\n     * Creates a slice of `array` excluding elements dropped from the beginning.\n     * Elements are dropped until `predicate` returns falsey. The predicate is\n     * invoked with three arguments: (value, index, array).\n     *\n     * @static\n     * @memberOf _\n     * @since 3.0.0\n     * @category Array\n     * @param {Array} array The array to query.\n     * @param {Function} [predicate=_.identity] The function invoked per iteration.\n     * @returns {Array} Returns the slice of `array`.\n     * @example\n     *\n     * var users = [\n     *   { 'user': 'barney',  'active': false },\n     *   { 'user': 'fred',    'active': false },\n     *   { 'user': 'pebbles', 'active': true }\n     * ];\n     *\n     * _.dropWhile(users, function(o) { return !o.active; });\n     * // => objects for ['pebbles']\n     *\n     * // The `_.matches` iteratee shorthand.\n     * _.dropWhile(users, { 'user': 'barney', 'active': false });\n     * // => objects for ['fred', 'pebbles']\n     *\n     * // The `_.matchesProperty` iteratee shorthand.\n     * _.dropWhile(users, ['active', false]);\n     * // => objects for ['pebbles']\n     *\n     * // The `_.property` iteratee shorthand.\n     * _.dropWhile(users, 'active');\n     * // => objects for ['barney', 'fred', 'pebbles']\n     */\n    function dropWhile(array, predicate) {\n      return (array && array.length)\n        ? baseWhile(array, getIteratee(predicate, 3), true)\n        : [];\n    }\n\n    /**\n     * Fills elements of `array` with `value` from `start` up to, but not\n     * including, `end`.\n     *\n     * **Note:** This method mutates `array`.\n     *\n     * @static\n     * @memberOf _\n     * @since 3.2.0\n     * @category Array\n     * @param {Array} array The array to fill.\n     * @param {*} value The value to fill `array` with.\n     * @param {number} [start=0] The start position.\n     * @param {number} [end=array.length] The end position.\n     * @returns {Array} Returns `array`.\n     * @example\n     *\n     * var array = [1, 2, 3];\n     *\n     * _.fill(array, 'a');\n     * console.log(array);\n     * // => ['a', 'a', 'a']\n     *\n     * _.fill(Array(3), 2);\n     * // => [2, 2, 2]\n     *\n     * _.fill([4, 6, 8, 10], '*', 1, 3);\n     * // => [4, '*', '*', 10]\n     */\n    function fill(array, value, start, end) {\n      var length = array == null ? 0 : array.length;\n      if (!length) {\n        return [];\n      }\n      if (start && typeof start != 'number' && isIterateeCall(array, value, start)) {\n        start = 0;\n        end = length;\n      }\n      return baseFill(array, value, start, end);\n    }\n\n    /**\n     * This method is like `_.find` except that it returns the index of the first\n     * element `predicate` returns truthy for instead of the element itself.\n     *\n     * @static\n     * @memberOf _\n     * @since 1.1.0\n     * @category Array\n     * @param {Array} array The array to inspect.\n     * @param {Function} [predicate=_.identity] The function invoked per iteration.\n     * @param {number} [fromIndex=0] The index to search from.\n     * @returns {number} Returns the index of the found element, else `-1`.\n     * @example\n     *\n     * var users = [\n     *   { 'user': 'barney',  'active': false },\n     *   { 'user': 'fred',    'active': false },\n     *   { 'user': 'pebbles', 'active': true }\n     * ];\n     *\n     * _.findIndex(users, function(o) { return o.user == 'barney'; });\n     * // => 0\n     *\n     * // The `_.matches` iteratee shorthand.\n     * _.findIndex(users, { 'user': 'fred', 'active': false });\n     * // => 1\n     *\n     * // The `_.matchesProperty` iteratee shorthand.\n     * _.findIndex(users, ['active', false]);\n     * // => 0\n     *\n     * // The `_.property` iteratee shorthand.\n     * _.findIndex(users, 'active');\n     * // => 2\n     */\n    function findIndex(array, predicate, fromIndex) {\n      var length = array == null ? 0 : array.length;\n      if (!length) {\n        return -1;\n      }\n      var index = fromIndex == null ? 0 : toInteger(fromIndex);\n      if (index < 0) {\n        index = nativeMax(length + index, 0);\n      }\n      return baseFindIndex(array, getIteratee(predicate, 3), index);\n    }\n\n    /**\n     * This method is like `_.findIndex` except that it iterates over elements\n     * of `collection` from right to left.\n     *\n     * @static\n     * @memberOf _\n     * @since 2.0.0\n     * @category Array\n     * @param {Array} array The array to inspect.\n     * @param {Function} [predicate=_.identity] The function invoked per iteration.\n     * @param {number} [fromIndex=array.length-1] The index to search from.\n     * @returns {number} Returns the index of the found element, else `-1`.\n     * @example\n     *\n     * var users = [\n     *   { 'user': 'barney',  'active': true },\n     *   { 'user': 'fred',    'active': false },\n     *   { 'user': 'pebbles', 'active': false }\n     * ];\n     *\n     * _.findLastIndex(users, function(o) { return o.user == 'pebbles'; });\n     * // => 2\n     *\n     * // The `_.matches` iteratee shorthand.\n     * _.findLastIndex(users, { 'user': 'barney', 'active': true });\n     * // => 0\n     *\n     * // The `_.matchesProperty` iteratee shorthand.\n     * _.findLastIndex(users, ['active', false]);\n     * // => 2\n     *\n     * // The `_.property` iteratee shorthand.\n     * _.findLastIndex(users, 'active');\n     * // => 0\n     */\n    function findLastIndex(array, predicate, fromIndex) {\n      var length = array == null ? 0 : array.length;\n      if (!length) {\n        return -1;\n      }\n      var index = length - 1;\n      if (fromIndex !== undefined) {\n        index = toInteger(fromIndex);\n        index = fromIndex < 0\n          ? nativeMax(length + index, 0)\n          : nativeMin(index, length - 1);\n      }\n      return baseFindIndex(array, getIteratee(predicate, 3), index, true);\n    }\n\n    /**\n     * Flattens `array` a single level deep.\n     *\n     * @static\n     * @memberOf _\n     * @since 0.1.0\n     * @category Array\n     * @param {Array} array The array to flatten.\n     * @returns {Array} Returns the new flattened array.\n     * @example\n     *\n     * _.flatten([1, [2, [3, [4]], 5]]);\n     * // => [1, 2, [3, [4]], 5]\n     */\n    function flatten(array) {\n      var length = array == null ? 0 : array.length;\n      return length ? baseFlatten(array, 1) : [];\n    }\n\n    /**\n     * Recursively flattens `array`.\n     *\n     * @static\n     * @memberOf _\n     * @since 3.0.0\n     * @category Array\n     * @param {Array} array The array to flatten.\n     * @returns {Array} Returns the new flattened array.\n     * @example\n     *\n     * _.flattenDeep([1, [2, [3, [4]], 5]]);\n     * // => [1, 2, 3, 4, 5]\n     */\n    function flattenDeep(array) {\n      var length = array == null ? 0 : array.length;\n      return length ? baseFlatten(array, INFINITY) : [];\n    }\n\n    /**\n     * Recursively flatten `array` up to `depth` times.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.4.0\n     * @category Array\n     * @param {Array} array The array to flatten.\n     * @param {number} [depth=1] The maximum recursion depth.\n     * @returns {Array} Returns the new flattened array.\n     * @example\n     *\n     * var array = [1, [2, [3, [4]], 5]];\n     *\n     * _.flattenDepth(array, 1);\n     * // => [1, 2, [3, [4]], 5]\n     *\n     * _.flattenDepth(array, 2);\n     * // => [1, 2, 3, [4], 5]\n     */\n    function flattenDepth(array, depth) {\n      var length = array == null ? 0 : array.length;\n      if (!length) {\n        return [];\n      }\n      depth = depth === undefined ? 1 : toInteger(depth);\n      return baseFlatten(array, depth);\n    }\n\n    /**\n     * The inverse of `_.toPairs`; this method returns an object composed\n     * from key-value `pairs`.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Array\n     * @param {Array} pairs The key-value pairs.\n     * @returns {Object} Returns the new object.\n     * @example\n     *\n     * _.fromPairs([['a', 1], ['b', 2]]);\n     * // => { 'a': 1, 'b': 2 }\n     */\n    function fromPairs(pairs) {\n      var index = -1,\n          length = pairs == null ? 0 : pairs.length,\n          result = {};\n\n      while (++index < length) {\n        var pair = pairs[index];\n        result[pair[0]] = pair[1];\n      }\n      return result;\n    }\n\n    /**\n     * Gets the first element of `array`.\n     *\n     * @static\n     * @memberOf _\n     * @since 0.1.0\n     * @alias first\n     * @category Array\n     * @param {Array} array The array to query.\n     * @returns {*} Returns the first element of `array`.\n     * @example\n     *\n     * _.head([1, 2, 3]);\n     * // => 1\n     *\n     * _.head([]);\n     * // => undefined\n     */\n    function head(array) {\n      return (array && array.length) ? array[0] : undefined;\n    }\n\n    /**\n     * Gets the index at which the first occurrence of `value` is found in `array`\n     * using [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)\n     * for equality comparisons. If `fromIndex` is negative, it's used as the\n     * offset from the end of `array`.\n     *\n     * @static\n     * @memberOf _\n     * @since 0.1.0\n     * @category Array\n     * @param {Array} array The array to inspect.\n     * @param {*} value The value to search for.\n     * @param {number} [fromIndex=0] The index to search from.\n     * @returns {number} Returns the index of the matched value, else `-1`.\n     * @example\n     *\n     * _.indexOf([1, 2, 1, 2], 2);\n     * // => 1\n     *\n     * // Search from the `fromIndex`.\n     * _.indexOf([1, 2, 1, 2], 2, 2);\n     * // => 3\n     */\n    function indexOf(array, value, fromIndex) {\n      var length = array == null ? 0 : array.length;\n      if (!length) {\n        return -1;\n      }\n      var index = fromIndex == null ? 0 : toInteger(fromIndex);\n      if (index < 0) {\n        index = nativeMax(length + index, 0);\n      }\n      return baseIndexOf(array, value, index);\n    }\n\n    /**\n     * Gets all but the last element of `array`.\n     *\n     * @static\n     * @memberOf _\n     * @since 0.1.0\n     * @category Array\n     * @param {Array} array The array to query.\n     * @returns {Array} Returns the slice of `array`.\n     * @example\n     *\n     * _.initial([1, 2, 3]);\n     * // => [1, 2]\n     */\n    function initial(array) {\n      var length = array == null ? 0 : array.length;\n      return length ? baseSlice(array, 0, -1) : [];\n    }\n\n    /**\n     * Creates an array of unique values that are included in all given arrays\n     * using [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)\n     * for equality comparisons. The order and references of result values are\n     * determined by the first array.\n     *\n     * @static\n     * @memberOf _\n     * @since 0.1.0\n     * @category Array\n     * @param {...Array} [arrays] The arrays to inspect.\n     * @returns {Array} Returns the new array of intersecting values.\n     * @example\n     *\n     * _.intersection([2, 1], [2, 3]);\n     * // => [2]\n     */\n    var intersection = baseRest(function(arrays) {\n      var mapped = arrayMap(arrays, castArrayLikeObject);\n      return (mapped.length && mapped[0] === arrays[0])\n        ? baseIntersection(mapped)\n        : [];\n    });\n\n    /**\n     * This method is like `_.intersection` except that it accepts `iteratee`\n     * which is invoked for each element of each `arrays` to generate the criterion\n     * by which they're compared. The order and references of result values are\n     * determined by the first array. The iteratee is invoked with one argument:\n     * (value).\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Array\n     * @param {...Array} [arrays] The arrays to inspect.\n     * @param {Function} [iteratee=_.identity] The iteratee invoked per element.\n     * @returns {Array} Returns the new array of intersecting values.\n     * @example\n     *\n     * _.intersectionBy([2.1, 1.2], [2.3, 3.4], Math.floor);\n     * // => [2.1]\n     *\n     * // The `_.property` iteratee shorthand.\n     * _.intersectionBy([{ 'x': 1 }], [{ 'x': 2 }, { 'x': 1 }], 'x');\n     * // => [{ 'x': 1 }]\n     */\n    var intersectionBy = baseRest(function(arrays) {\n      var iteratee = last(arrays),\n          mapped = arrayMap(arrays, castArrayLikeObject);\n\n      if (iteratee === last(mapped)) {\n        iteratee = undefined;\n      } else {\n        mapped.pop();\n      }\n      return (mapped.length && mapped[0] === arrays[0])\n        ? baseIntersection(mapped, getIteratee(iteratee, 2))\n        : [];\n    });\n\n    /**\n     * This method is like `_.intersection` except that it accepts `comparator`\n     * which is invoked to compare elements of `arrays`. The order and references\n     * of result values are determined by the first array. The comparator is\n     * invoked with two arguments: (arrVal, othVal).\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Array\n     * @param {...Array} [arrays] The arrays to inspect.\n     * @param {Function} [comparator] The comparator invoked per element.\n     * @returns {Array} Returns the new array of intersecting values.\n     * @example\n     *\n     * var objects = [{ 'x': 1, 'y': 2 }, { 'x': 2, 'y': 1 }];\n     * var others = [{ 'x': 1, 'y': 1 }, { 'x': 1, 'y': 2 }];\n     *\n     * _.intersectionWith(objects, others, _.isEqual);\n     * // => [{ 'x': 1, 'y': 2 }]\n     */\n    var intersectionWith = baseRest(function(arrays) {\n      var comparator = last(arrays),\n          mapped = arrayMap(arrays, castArrayLikeObject);\n\n      comparator = typeof comparator == 'function' ? comparator : undefined;\n      if (comparator) {\n        mapped.pop();\n      }\n      return (mapped.length && mapped[0] === arrays[0])\n        ? baseIntersection(mapped, undefined, comparator)\n        : [];\n    });\n\n    /**\n     * Converts all elements in `array` into a string separated by `separator`.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Array\n     * @param {Array} array The array to convert.\n     * @param {string} [separator=','] The element separator.\n     * @returns {string} Returns the joined string.\n     * @example\n     *\n     * _.join(['a', 'b', 'c'], '~');\n     * // => 'a~b~c'\n     */\n    function join(array, separator) {\n      return array == null ? '' : nativeJoin.call(array, separator);\n    }\n\n    /**\n     * Gets the last element of `array`.\n     *\n     * @static\n     * @memberOf _\n     * @since 0.1.0\n     * @category Array\n     * @param {Array} array The array to query.\n     * @returns {*} Returns the last element of `array`.\n     * @example\n     *\n     * _.last([1, 2, 3]);\n     * // => 3\n     */\n    function last(array) {\n      var length = array == null ? 0 : array.length;\n      return length ? array[length - 1] : undefined;\n    }\n\n    /**\n     * This method is like `_.indexOf` except that it iterates over elements of\n     * `array` from right to left.\n     *\n     * @static\n     * @memberOf _\n     * @since 0.1.0\n     * @category Array\n     * @param {Array} array The array to inspect.\n     * @param {*} value The value to search for.\n     * @param {number} [fromIndex=array.length-1] The index to search from.\n     * @returns {number} Returns the index of the matched value, else `-1`.\n     * @example\n     *\n     * _.lastIndexOf([1, 2, 1, 2], 2);\n     * // => 3\n     *\n     * // Search from the `fromIndex`.\n     * _.lastIndexOf([1, 2, 1, 2], 2, 2);\n     * // => 1\n     */\n    function lastIndexOf(array, value, fromIndex) {\n      var length = array == null ? 0 : array.length;\n      if (!length) {\n        return -1;\n      }\n      var index = length;\n      if (fromIndex !== undefined) {\n        index = toInteger(fromIndex);\n        index = index < 0 ? nativeMax(length + index, 0) : nativeMin(index, length - 1);\n      }\n      return value === value\n        ? strictLastIndexOf(array, value, index)\n        : baseFindIndex(array, baseIsNaN, index, true);\n    }\n\n    /**\n     * Gets the element at index `n` of `array`. If `n` is negative, the nth\n     * element from the end is returned.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.11.0\n     * @category Array\n     * @param {Array} array The array to query.\n     * @param {number} [n=0] The index of the element to return.\n     * @returns {*} Returns the nth element of `array`.\n     * @example\n     *\n     * var array = ['a', 'b', 'c', 'd'];\n     *\n     * _.nth(array, 1);\n     * // => 'b'\n     *\n     * _.nth(array, -2);\n     * // => 'c';\n     */\n    function nth(array, n) {\n      return (array && array.length) ? baseNth(array, toInteger(n)) : undefined;\n    }\n\n    /**\n     * Removes all given values from `array` using\n     * [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)\n     * for equality comparisons.\n     *\n     * **Note:** Unlike `_.without`, this method mutates `array`. Use `_.remove`\n     * to remove elements from an array by predicate.\n     *\n     * @static\n     * @memberOf _\n     * @since 2.0.0\n     * @category Array\n     * @param {Array} array The array to modify.\n     * @param {...*} [values] The values to remove.\n     * @returns {Array} Returns `array`.\n     * @example\n     *\n     * var array = ['a', 'b', 'c', 'a', 'b', 'c'];\n     *\n     * _.pull(array, 'a', 'c');\n     * console.log(array);\n     * // => ['b', 'b']\n     */\n    var pull = baseRest(pullAll);\n\n    /**\n     * This method is like `_.pull` except that it accepts an array of values to remove.\n     *\n     * **Note:** Unlike `_.difference`, this method mutates `array`.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Array\n     * @param {Array} array The array to modify.\n     * @param {Array} values The values to remove.\n     * @returns {Array} Returns `array`.\n     * @example\n     *\n     * var array = ['a', 'b', 'c', 'a', 'b', 'c'];\n     *\n     * _.pullAll(array, ['a', 'c']);\n     * console.log(array);\n     * // => ['b', 'b']\n     */\n    function pullAll(array, values) {\n      return (array && array.length && values && values.length)\n        ? basePullAll(array, values)\n        : array;\n    }\n\n    /**\n     * This method is like `_.pullAll` except that it accepts `iteratee` which is\n     * invoked for each element of `array` and `values` to generate the criterion\n     * by which they're compared. The iteratee is invoked with one argument: (value).\n     *\n     * **Note:** Unlike `_.differenceBy`, this method mutates `array`.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Array\n     * @param {Array} array The array to modify.\n     * @param {Array} values The values to remove.\n     * @param {Function} [iteratee=_.identity] The iteratee invoked per element.\n     * @returns {Array} Returns `array`.\n     * @example\n     *\n     * var array = [{ 'x': 1 }, { 'x': 2 }, { 'x': 3 }, { 'x': 1 }];\n     *\n     * _.pullAllBy(array, [{ 'x': 1 }, { 'x': 3 }], 'x');\n     * console.log(array);\n     * // => [{ 'x': 2 }]\n     */\n    function pullAllBy(array, values, iteratee) {\n      return (array && array.length && values && values.length)\n        ? basePullAll(array, values, getIteratee(iteratee, 2))\n        : array;\n    }\n\n    /**\n     * This method is like `_.pullAll` except that it accepts `comparator` which\n     * is invoked to compare elements of `array` to `values`. The comparator is\n     * invoked with two arguments: (arrVal, othVal).\n     *\n     * **Note:** Unlike `_.differenceWith`, this method mutates `array`.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.6.0\n     * @category Array\n     * @param {Array} array The array to modify.\n     * @param {Array} values The values to remove.\n     * @param {Function} [comparator] The comparator invoked per element.\n     * @returns {Array} Returns `array`.\n     * @example\n     *\n     * var array = [{ 'x': 1, 'y': 2 }, { 'x': 3, 'y': 4 }, { 'x': 5, 'y': 6 }];\n     *\n     * _.pullAllWith(array, [{ 'x': 3, 'y': 4 }], _.isEqual);\n     * console.log(array);\n     * // => [{ 'x': 1, 'y': 2 }, { 'x': 5, 'y': 6 }]\n     */\n    function pullAllWith(array, values, comparator) {\n      return (array && array.length && values && values.length)\n        ? basePullAll(array, values, undefined, comparator)\n        : array;\n    }\n\n    /**\n     * Removes elements from `array` corresponding to `indexes` and returns an\n     * array of removed elements.\n     *\n     * **Note:** Unlike `_.at`, this method mutates `array`.\n     *\n     * @static\n     * @memberOf _\n     * @since 3.0.0\n     * @category Array\n     * @param {Array} array The array to modify.\n     * @param {...(number|number[])} [indexes] The indexes of elements to remove.\n     * @returns {Array} Returns the new array of removed elements.\n     * @example\n     *\n     * var array = ['a', 'b', 'c', 'd'];\n     * var pulled = _.pullAt(array, [1, 3]);\n     *\n     * console.log(array);\n     * // => ['a', 'c']\n     *\n     * console.log(pulled);\n     * // => ['b', 'd']\n     */\n    var pullAt = flatRest(function(array, indexes) {\n      var length = array == null ? 0 : array.length,\n          result = baseAt(array, indexes);\n\n      basePullAt(array, arrayMap(indexes, function(index) {\n        return isIndex(index, length) ? +index : index;\n      }).sort(compareAscending));\n\n      return result;\n    });\n\n    /**\n     * Removes all elements from `array` that `predicate` returns truthy for\n     * and returns an array of the removed elements. The predicate is invoked\n     * with three arguments: (value, index, array).\n     *\n     * **Note:** Unlike `_.filter`, this method mutates `array`. Use `_.pull`\n     * to pull elements from an array by value.\n     *\n     * @static\n     * @memberOf _\n     * @since 2.0.0\n     * @category Array\n     * @param {Array} array The array to modify.\n     * @param {Function} [predicate=_.identity] The function invoked per iteration.\n     * @returns {Array} Returns the new array of removed elements.\n     * @example\n     *\n     * var array = [1, 2, 3, 4];\n     * var evens = _.remove(array, function(n) {\n     *   return n % 2 == 0;\n     * });\n     *\n     * console.log(array);\n     * // => [1, 3]\n     *\n     * console.log(evens);\n     * // => [2, 4]\n     */\n    function remove(array, predicate) {\n      var result = [];\n      if (!(array && array.length)) {\n        return result;\n      }\n      var index = -1,\n          indexes = [],\n          length = array.length;\n\n      predicate = getIteratee(predicate, 3);\n      while (++index < length) {\n        var value = array[index];\n        if (predicate(value, index, array)) {\n          result.push(value);\n          indexes.push(index);\n        }\n      }\n      basePullAt(array, indexes);\n      return result;\n    }\n\n    /**\n     * Reverses `array` so that the first element becomes the last, the second\n     * element becomes the second to last, and so on.\n     *\n     * **Note:** This method mutates `array` and is based on\n     * [`Array#reverse`](https://mdn.io/Array/reverse).\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Array\n     * @param {Array} array The array to modify.\n     * @returns {Array} Returns `array`.\n     * @example\n     *\n     * var array = [1, 2, 3];\n     *\n     * _.reverse(array);\n     * // => [3, 2, 1]\n     *\n     * console.log(array);\n     * // => [3, 2, 1]\n     */\n    function reverse(array) {\n      return array == null ? array : nativeReverse.call(array);\n    }\n\n    /**\n     * Creates a slice of `array` from `start` up to, but not including, `end`.\n     *\n     * **Note:** This method is used instead of\n     * [`Array#slice`](https://mdn.io/Array/slice) to ensure dense arrays are\n     * returned.\n     *\n     * @static\n     * @memberOf _\n     * @since 3.0.0\n     * @category Array\n     * @param {Array} array The array to slice.\n     * @param {number} [start=0] The start position.\n     * @param {number} [end=array.length] The end position.\n     * @returns {Array} Returns the slice of `array`.\n     */\n    function slice(array, start, end) {\n      var length = array == null ? 0 : array.length;\n      if (!length) {\n        return [];\n      }\n      if (end && typeof end != 'number' && isIterateeCall(array, start, end)) {\n        start = 0;\n        end = length;\n      }\n      else {\n        start = start == null ? 0 : toInteger(start);\n        end = end === undefined ? length : toInteger(end);\n      }\n      return baseSlice(array, start, end);\n    }\n\n    /**\n     * Uses a binary search to determine the lowest index at which `value`\n     * should be inserted into `array` in order to maintain its sort order.\n     *\n     * @static\n     * @memberOf _\n     * @since 0.1.0\n     * @category Array\n     * @param {Array} array The sorted array to inspect.\n     * @param {*} value The value to evaluate.\n     * @returns {number} Returns the index at which `value` should be inserted\n     *  into `array`.\n     * @example\n     *\n     * _.sortedIndex([30, 50], 40);\n     * // => 1\n     */\n    function sortedIndex(array, value) {\n      return baseSortedIndex(array, value);\n    }\n\n    /**\n     * This method is like `_.sortedIndex` except that it accepts `iteratee`\n     * which is invoked for `value` and each element of `array` to compute their\n     * sort ranking. The iteratee is invoked with one argument: (value).\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Array\n     * @param {Array} array The sorted array to inspect.\n     * @param {*} value The value to evaluate.\n     * @param {Function} [iteratee=_.identity] The iteratee invoked per element.\n     * @returns {number} Returns the index at which `value` should be inserted\n     *  into `array`.\n     * @example\n     *\n     * var objects = [{ 'x': 4 }, { 'x': 5 }];\n     *\n     * _.sortedIndexBy(objects, { 'x': 4 }, function(o) { return o.x; });\n     * // => 0\n     *\n     * // The `_.property` iteratee shorthand.\n     * _.sortedIndexBy(objects, { 'x': 4 }, 'x');\n     * // => 0\n     */\n    function sortedIndexBy(array, value, iteratee) {\n      return baseSortedIndexBy(array, value, getIteratee(iteratee, 2));\n    }\n\n    /**\n     * This method is like `_.indexOf` except that it performs a binary\n     * search on a sorted `array`.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Array\n     * @param {Array} array The array to inspect.\n     * @param {*} value The value to search for.\n     * @returns {number} Returns the index of the matched value, else `-1`.\n     * @example\n     *\n     * _.sortedIndexOf([4, 5, 5, 5, 6], 5);\n     * // => 1\n     */\n    function sortedIndexOf(array, value) {\n      var length = array == null ? 0 : array.length;\n      if (length) {\n        var index = baseSortedIndex(array, value);\n        if (index < length && eq(array[index], value)) {\n          return index;\n        }\n      }\n      return -1;\n    }\n\n    /**\n     * This method is like `_.sortedIndex` except that it returns the highest\n     * index at which `value` should be inserted into `array` in order to\n     * maintain its sort order.\n     *\n     * @static\n     * @memberOf _\n     * @since 3.0.0\n     * @category Array\n     * @param {Array} array The sorted array to inspect.\n     * @param {*} value The value to evaluate.\n     * @returns {number} Returns the index at which `value` should be inserted\n     *  into `array`.\n     * @example\n     *\n     * _.sortedLastIndex([4, 5, 5, 5, 6], 5);\n     * // => 4\n     */\n    function sortedLastIndex(array, value) {\n      return baseSortedIndex(array, value, true);\n    }\n\n    /**\n     * This method is like `_.sortedLastIndex` except that it accepts `iteratee`\n     * which is invoked for `value` and each element of `array` to compute their\n     * sort ranking. The iteratee is invoked with one argument: (value).\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Array\n     * @param {Array} array The sorted array to inspect.\n     * @param {*} value The value to evaluate.\n     * @param {Function} [iteratee=_.identity] The iteratee invoked per element.\n     * @returns {number} Returns the index at which `value` should be inserted\n     *  into `array`.\n     * @example\n     *\n     * var objects = [{ 'x': 4 }, { 'x': 5 }];\n     *\n     * _.sortedLastIndexBy(objects, { 'x': 4 }, function(o) { return o.x; });\n     * // => 1\n     *\n     * // The `_.property` iteratee shorthand.\n     * _.sortedLastIndexBy(objects, { 'x': 4 }, 'x');\n     * // => 1\n     */\n    function sortedLastIndexBy(array, value, iteratee) {\n      return baseSortedIndexBy(array, value, getIteratee(iteratee, 2), true);\n    }\n\n    /**\n     * This method is like `_.lastIndexOf` except that it performs a binary\n     * search on a sorted `array`.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Array\n     * @param {Array} array The array to inspect.\n     * @param {*} value The value to search for.\n     * @returns {number} Returns the index of the matched value, else `-1`.\n     * @example\n     *\n     * _.sortedLastIndexOf([4, 5, 5, 5, 6], 5);\n     * // => 3\n     */\n    function sortedLastIndexOf(array, value) {\n      var length = array == null ? 0 : array.length;\n      if (length) {\n        var index = baseSortedIndex(array, value, true) - 1;\n        if (eq(array[index], value)) {\n          return index;\n        }\n      }\n      return -1;\n    }\n\n    /**\n     * This method is like `_.uniq` except that it's designed and optimized\n     * for sorted arrays.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Array\n     * @param {Array} array The array to inspect.\n     * @returns {Array} Returns the new duplicate free array.\n     * @example\n     *\n     * _.sortedUniq([1, 1, 2]);\n     * // => [1, 2]\n     */\n    function sortedUniq(array) {\n      return (array && array.length)\n        ? baseSortedUniq(array)\n        : [];\n    }\n\n    /**\n     * This method is like `_.uniqBy` except that it's designed and optimized\n     * for sorted arrays.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Array\n     * @param {Array} array The array to inspect.\n     * @param {Function} [iteratee] The iteratee invoked per element.\n     * @returns {Array} Returns the new duplicate free array.\n     * @example\n     *\n     * _.sortedUniqBy([1.1, 1.2, 2.3, 2.4], Math.floor);\n     * // => [1.1, 2.3]\n     */\n    function sortedUniqBy(array, iteratee) {\n      return (array && array.length)\n        ? baseSortedUniq(array, getIteratee(iteratee, 2))\n        : [];\n    }\n\n    /**\n     * Gets all but the first element of `array`.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Array\n     * @param {Array} array The array to query.\n     * @returns {Array} Returns the slice of `array`.\n     * @example\n     *\n     * _.tail([1, 2, 3]);\n     * // => [2, 3]\n     */\n    function tail(array) {\n      var length = array == null ? 0 : array.length;\n      return length ? baseSlice(array, 1, length) : [];\n    }\n\n    /**\n     * Creates a slice of `array` with `n` elements taken from the beginning.\n     *\n     * @static\n     * @memberOf _\n     * @since 0.1.0\n     * @category Array\n     * @param {Array} array The array to query.\n     * @param {number} [n=1] The number of elements to take.\n     * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.\n     * @returns {Array} Returns the slice of `array`.\n     * @example\n     *\n     * _.take([1, 2, 3]);\n     * // => [1]\n     *\n     * _.take([1, 2, 3], 2);\n     * // => [1, 2]\n     *\n     * _.take([1, 2, 3], 5);\n     * // => [1, 2, 3]\n     *\n     * _.take([1, 2, 3], 0);\n     * // => []\n     */\n    function take(array, n, guard) {\n      if (!(array && array.length)) {\n        return [];\n      }\n      n = (guard || n === undefined) ? 1 : toInteger(n);\n      return baseSlice(array, 0, n < 0 ? 0 : n);\n    }\n\n    /**\n     * Creates a slice of `array` with `n` elements taken from the end.\n     *\n     * @static\n     * @memberOf _\n     * @since 3.0.0\n     * @category Array\n     * @param {Array} array The array to query.\n     * @param {number} [n=1] The number of elements to take.\n     * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.\n     * @returns {Array} Returns the slice of `array`.\n     * @example\n     *\n     * _.takeRight([1, 2, 3]);\n     * // => [3]\n     *\n     * _.takeRight([1, 2, 3], 2);\n     * // => [2, 3]\n     *\n     * _.takeRight([1, 2, 3], 5);\n     * // => [1, 2, 3]\n     *\n     * _.takeRight([1, 2, 3], 0);\n     * // => []\n     */\n    function takeRight(array, n, guard) {\n      var length = array == null ? 0 : array.length;\n      if (!length) {\n        return [];\n      }\n      n = (guard || n === undefined) ? 1 : toInteger(n);\n      n = length - n;\n      return baseSlice(array, n < 0 ? 0 : n, length);\n    }\n\n    /**\n     * Creates a slice of `array` with elements taken from the end. Elements are\n     * taken until `predicate` returns falsey. The predicate is invoked with\n     * three arguments: (value, index, array).\n     *\n     * @static\n     * @memberOf _\n     * @since 3.0.0\n     * @category Array\n     * @param {Array} array The array to query.\n     * @param {Function} [predicate=_.identity] The function invoked per iteration.\n     * @returns {Array} Returns the slice of `array`.\n     * @example\n     *\n     * var users = [\n     *   { 'user': 'barney',  'active': true },\n     *   { 'user': 'fred',    'active': false },\n     *   { 'user': 'pebbles', 'active': false }\n     * ];\n     *\n     * _.takeRightWhile(users, function(o) { return !o.active; });\n     * // => objects for ['fred', 'pebbles']\n     *\n     * // The `_.matches` iteratee shorthand.\n     * _.takeRightWhile(users, { 'user': 'pebbles', 'active': false });\n     * // => objects for ['pebbles']\n     *\n     * // The `_.matchesProperty` iteratee shorthand.\n     * _.takeRightWhile(users, ['active', false]);\n     * // => objects for ['fred', 'pebbles']\n     *\n     * // The `_.property` iteratee shorthand.\n     * _.takeRightWhile(users, 'active');\n     * // => []\n     */\n    function takeRightWhile(array, predicate) {\n      return (array && array.length)\n        ? baseWhile(array, getIteratee(predicate, 3), false, true)\n        : [];\n    }\n\n    /**\n     * Creates a slice of `array` with elements taken from the beginning. Elements\n     * are taken until `predicate` returns falsey. The predicate is invoked with\n     * three arguments: (value, index, array).\n     *\n     * @static\n     * @memberOf _\n     * @since 3.0.0\n     * @category Array\n     * @param {Array} array The array to query.\n     * @param {Function} [predicate=_.identity] The function invoked per iteration.\n     * @returns {Array} Returns the slice of `array`.\n     * @example\n     *\n     * var users = [\n     *   { 'user': 'barney',  'active': false },\n     *   { 'user': 'fred',    'active': false },\n     *   { 'user': 'pebbles', 'active': true }\n     * ];\n     *\n     * _.takeWhile(users, function(o) { return !o.active; });\n     * // => objects for ['barney', 'fred']\n     *\n     * // The `_.matches` iteratee shorthand.\n     * _.takeWhile(users, { 'user': 'barney', 'active': false });\n     * // => objects for ['barney']\n     *\n     * // The `_.matchesProperty` iteratee shorthand.\n     * _.takeWhile(users, ['active', false]);\n     * // => objects for ['barney', 'fred']\n     *\n     * // The `_.property` iteratee shorthand.\n     * _.takeWhile(users, 'active');\n     * // => []\n     */\n    function takeWhile(array, predicate) {\n      return (array && array.length)\n        ? baseWhile(array, getIteratee(predicate, 3))\n        : [];\n    }\n\n    /**\n     * Creates an array of unique values, in order, from all given arrays using\n     * [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)\n     * for equality comparisons.\n     *\n     * @static\n     * @memberOf _\n     * @since 0.1.0\n     * @category Array\n     * @param {...Array} [arrays] The arrays to inspect.\n     * @returns {Array} Returns the new array of combined values.\n     * @example\n     *\n     * _.union([2], [1, 2]);\n     * // => [2, 1]\n     */\n    var union = baseRest(function(arrays) {\n      return baseUniq(baseFlatten(arrays, 1, isArrayLikeObject, true));\n    });\n\n    /**\n     * This method is like `_.union` except that it accepts `iteratee` which is\n     * invoked for each element of each `arrays` to generate the criterion by\n     * which uniqueness is computed. Result values are chosen from the first\n     * array in which the value occurs. The iteratee is invoked with one argument:\n     * (value).\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Array\n     * @param {...Array} [arrays] The arrays to inspect.\n     * @param {Function} [iteratee=_.identity] The iteratee invoked per element.\n     * @returns {Array} Returns the new array of combined values.\n     * @example\n     *\n     * _.unionBy([2.1], [1.2, 2.3], Math.floor);\n     * // => [2.1, 1.2]\n     *\n     * // The `_.property` iteratee shorthand.\n     * _.unionBy([{ 'x': 1 }], [{ 'x': 2 }, { 'x': 1 }], 'x');\n     * // => [{ 'x': 1 }, { 'x': 2 }]\n     */\n    var unionBy = baseRest(function(arrays) {\n      var iteratee = last(arrays);\n      if (isArrayLikeObject(iteratee)) {\n        iteratee = undefined;\n      }\n      return baseUniq(baseFlatten(arrays, 1, isArrayLikeObject, true), getIteratee(iteratee, 2));\n    });\n\n    /**\n     * This method is like `_.union` except that it accepts `comparator` which\n     * is invoked to compare elements of `arrays`. Result values are chosen from\n     * the first array in which the value occurs. The comparator is invoked\n     * with two arguments: (arrVal, othVal).\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Array\n     * @param {...Array} [arrays] The arrays to inspect.\n     * @param {Function} [comparator] The comparator invoked per element.\n     * @returns {Array} Returns the new array of combined values.\n     * @example\n     *\n     * var objects = [{ 'x': 1, 'y': 2 }, { 'x': 2, 'y': 1 }];\n     * var others = [{ 'x': 1, 'y': 1 }, { 'x': 1, 'y': 2 }];\n     *\n     * _.unionWith(objects, others, _.isEqual);\n     * // => [{ 'x': 1, 'y': 2 }, { 'x': 2, 'y': 1 }, { 'x': 1, 'y': 1 }]\n     */\n    var unionWith = baseRest(function(arrays) {\n      var comparator = last(arrays);\n      comparator = typeof comparator == 'function' ? comparator : undefined;\n      return baseUniq(baseFlatten(arrays, 1, isArrayLikeObject, true), undefined, comparator);\n    });\n\n    /**\n     * Creates a duplicate-free version of an array, using\n     * [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)\n     * for equality comparisons, in which only the first occurrence of each element\n     * is kept. The order of result values is determined by the order they occur\n     * in the array.\n     *\n     * @static\n     * @memberOf _\n     * @since 0.1.0\n     * @category Array\n     * @param {Array} array The array to inspect.\n     * @returns {Array} Returns the new duplicate free array.\n     * @example\n     *\n     * _.uniq([2, 1, 2]);\n     * // => [2, 1]\n     */\n    function uniq(array) {\n      return (array && array.length) ? baseUniq(array) : [];\n    }\n\n    /**\n     * This method is like `_.uniq` except that it accepts `iteratee` which is\n     * invoked for each element in `array` to generate the criterion by which\n     * uniqueness is computed. The order of result values is determined by the\n     * order they occur in the array. The iteratee is invoked with one argument:\n     * (value).\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Array\n     * @param {Array} array The array to inspect.\n     * @param {Function} [iteratee=_.identity] The iteratee invoked per element.\n     * @returns {Array} Returns the new duplicate free array.\n     * @example\n     *\n     * _.uniqBy([2.1, 1.2, 2.3], Math.floor);\n     * // => [2.1, 1.2]\n     *\n     * // The `_.property` iteratee shorthand.\n     * _.uniqBy([{ 'x': 1 }, { 'x': 2 }, { 'x': 1 }], 'x');\n     * // => [{ 'x': 1 }, { 'x': 2 }]\n     */\n    function uniqBy(array, iteratee) {\n      return (array && array.length) ? baseUniq(array, getIteratee(iteratee, 2)) : [];\n    }\n\n    /**\n     * This method is like `_.uniq` except that it accepts `comparator` which\n     * is invoked to compare elements of `array`. The order of result values is\n     * determined by the order they occur in the array.The comparator is invoked\n     * with two arguments: (arrVal, othVal).\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Array\n     * @param {Array} array The array to inspect.\n     * @param {Function} [comparator] The comparator invoked per element.\n     * @returns {Array} Returns the new duplicate free array.\n     * @example\n     *\n     * var objects = [{ 'x': 1, 'y': 2 }, { 'x': 2, 'y': 1 }, { 'x': 1, 'y': 2 }];\n     *\n     * _.uniqWith(objects, _.isEqual);\n     * // => [{ 'x': 1, 'y': 2 }, { 'x': 2, 'y': 1 }]\n     */\n    function uniqWith(array, comparator) {\n      comparator = typeof comparator == 'function' ? comparator : undefined;\n      return (array && array.length) ? baseUniq(array, undefined, comparator) : [];\n    }\n\n    /**\n     * This method is like `_.zip` except that it accepts an array of grouped\n     * elements and creates an array regrouping the elements to their pre-zip\n     * configuration.\n     *\n     * @static\n     * @memberOf _\n     * @since 1.2.0\n     * @category Array\n     * @param {Array} array The array of grouped elements to process.\n     * @returns {Array} Returns the new array of regrouped elements.\n     * @example\n     *\n     * var zipped = _.zip(['a', 'b'], [1, 2], [true, false]);\n     * // => [['a', 1, true], ['b', 2, false]]\n     *\n     * _.unzip(zipped);\n     * // => [['a', 'b'], [1, 2], [true, false]]\n     */\n    function unzip(array) {\n      if (!(array && array.length)) {\n        return [];\n      }\n      var length = 0;\n      array = arrayFilter(array, function(group) {\n        if (isArrayLikeObject(group)) {\n          length = nativeMax(group.length, length);\n          return true;\n        }\n      });\n      return baseTimes(length, function(index) {\n        return arrayMap(array, baseProperty(index));\n      });\n    }\n\n    /**\n     * This method is like `_.unzip` except that it accepts `iteratee` to specify\n     * how regrouped values should be combined. The iteratee is invoked with the\n     * elements of each group: (...group).\n     *\n     * @static\n     * @memberOf _\n     * @since 3.8.0\n     * @category Array\n     * @param {Array} array The array of grouped elements to process.\n     * @param {Function} [iteratee=_.identity] The function to combine\n     *  regrouped values.\n     * @returns {Array} Returns the new array of regrouped elements.\n     * @example\n     *\n     * var zipped = _.zip([1, 2], [10, 20], [100, 200]);\n     * // => [[1, 10, 100], [2, 20, 200]]\n     *\n     * _.unzipWith(zipped, _.add);\n     * // => [3, 30, 300]\n     */\n    function unzipWith(array, iteratee) {\n      if (!(array && array.length)) {\n        return [];\n      }\n      var result = unzip(array);\n      if (iteratee == null) {\n        return result;\n      }\n      return arrayMap(result, function(group) {\n        return apply(iteratee, undefined, group);\n      });\n    }\n\n    /**\n     * Creates an array excluding all given values using\n     * [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)\n     * for equality comparisons.\n     *\n     * **Note:** Unlike `_.pull`, this method returns a new array.\n     *\n     * @static\n     * @memberOf _\n     * @since 0.1.0\n     * @category Array\n     * @param {Array} array The array to inspect.\n     * @param {...*} [values] The values to exclude.\n     * @returns {Array} Returns the new array of filtered values.\n     * @see _.difference, _.xor\n     * @example\n     *\n     * _.without([2, 1, 2, 3], 1, 2);\n     * // => [3]\n     */\n    var without = baseRest(function(array, values) {\n      return isArrayLikeObject(array)\n        ? baseDifference(array, values)\n        : [];\n    });\n\n    /**\n     * Creates an array of unique values that is the\n     * [symmetric difference](https://en.wikipedia.org/wiki/Symmetric_difference)\n     * of the given arrays. The order of result values is determined by the order\n     * they occur in the arrays.\n     *\n     * @static\n     * @memberOf _\n     * @since 2.4.0\n     * @category Array\n     * @param {...Array} [arrays] The arrays to inspect.\n     * @returns {Array} Returns the new array of filtered values.\n     * @see _.difference, _.without\n     * @example\n     *\n     * _.xor([2, 1], [2, 3]);\n     * // => [1, 3]\n     */\n    var xor = baseRest(function(arrays) {\n      return baseXor(arrayFilter(arrays, isArrayLikeObject));\n    });\n\n    /**\n     * This method is like `_.xor` except that it accepts `iteratee` which is\n     * invoked for each element of each `arrays` to generate the criterion by\n     * which by which they're compared. The order of result values is determined\n     * by the order they occur in the arrays. The iteratee is invoked with one\n     * argument: (value).\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Array\n     * @param {...Array} [arrays] The arrays to inspect.\n     * @param {Function} [iteratee=_.identity] The iteratee invoked per element.\n     * @returns {Array} Returns the new array of filtered values.\n     * @example\n     *\n     * _.xorBy([2.1, 1.2], [2.3, 3.4], Math.floor);\n     * // => [1.2, 3.4]\n     *\n     * // The `_.property` iteratee shorthand.\n     * _.xorBy([{ 'x': 1 }], [{ 'x': 2 }, { 'x': 1 }], 'x');\n     * // => [{ 'x': 2 }]\n     */\n    var xorBy = baseRest(function(arrays) {\n      var iteratee = last(arrays);\n      if (isArrayLikeObject(iteratee)) {\n        iteratee = undefined;\n      }\n      return baseXor(arrayFilter(arrays, isArrayLikeObject), getIteratee(iteratee, 2));\n    });\n\n    /**\n     * This method is like `_.xor` except that it accepts `comparator` which is\n     * invoked to compare elements of `arrays`. The order of result values is\n     * determined by the order they occur in the arrays. The comparator is invoked\n     * with two arguments: (arrVal, othVal).\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Array\n     * @param {...Array} [arrays] The arrays to inspect.\n     * @param {Function} [comparator] The comparator invoked per element.\n     * @returns {Array} Returns the new array of filtered values.\n     * @example\n     *\n     * var objects = [{ 'x': 1, 'y': 2 }, { 'x': 2, 'y': 1 }];\n     * var others = [{ 'x': 1, 'y': 1 }, { 'x': 1, 'y': 2 }];\n     *\n     * _.xorWith(objects, others, _.isEqual);\n     * // => [{ 'x': 2, 'y': 1 }, { 'x': 1, 'y': 1 }]\n     */\n    var xorWith = baseRest(function(arrays) {\n      var comparator = last(arrays);\n      comparator = typeof comparator == 'function' ? comparator : undefined;\n      return baseXor(arrayFilter(arrays, isArrayLikeObject), undefined, comparator);\n    });\n\n    /**\n     * Creates an array of grouped elements, the first of which contains the\n     * first elements of the given arrays, the second of which contains the\n     * second elements of the given arrays, and so on.\n     *\n     * @static\n     * @memberOf _\n     * @since 0.1.0\n     * @category Array\n     * @param {...Array} [arrays] The arrays to process.\n     * @returns {Array} Returns the new array of grouped elements.\n     * @example\n     *\n     * _.zip(['a', 'b'], [1, 2], [true, false]);\n     * // => [['a', 1, true], ['b', 2, false]]\n     */\n    var zip = baseRest(unzip);\n\n    /**\n     * This method is like `_.fromPairs` except that it accepts two arrays,\n     * one of property identifiers and one of corresponding values.\n     *\n     * @static\n     * @memberOf _\n     * @since 0.4.0\n     * @category Array\n     * @param {Array} [props=[]] The property identifiers.\n     * @param {Array} [values=[]] The property values.\n     * @returns {Object} Returns the new object.\n     * @example\n     *\n     * _.zipObject(['a', 'b'], [1, 2]);\n     * // => { 'a': 1, 'b': 2 }\n     */\n    function zipObject(props, values) {\n      return baseZipObject(props || [], values || [], assignValue);\n    }\n\n    /**\n     * This method is like `_.zipObject` except that it supports property paths.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.1.0\n     * @category Array\n     * @param {Array} [props=[]] The property identifiers.\n     * @param {Array} [values=[]] The property values.\n     * @returns {Object} Returns the new object.\n     * @example\n     *\n     * _.zipObjectDeep(['a.b[0].c', 'a.b[1].d'], [1, 2]);\n     * // => { 'a': { 'b': [{ 'c': 1 }, { 'd': 2 }] } }\n     */\n    function zipObjectDeep(props, values) {\n      return baseZipObject(props || [], values || [], baseSet);\n    }\n\n    /**\n     * This method is like `_.zip` except that it accepts `iteratee` to specify\n     * how grouped values should be combined. The iteratee is invoked with the\n     * elements of each group: (...group).\n     *\n     * @static\n     * @memberOf _\n     * @since 3.8.0\n     * @category Array\n     * @param {...Array} [arrays] The arrays to process.\n     * @param {Function} [iteratee=_.identity] The function to combine\n     *  grouped values.\n     * @returns {Array} Returns the new array of grouped elements.\n     * @example\n     *\n     * _.zipWith([1, 2], [10, 20], [100, 200], function(a, b, c) {\n     *   return a + b + c;\n     * });\n     * // => [111, 222]\n     */\n    var zipWith = baseRest(function(arrays) {\n      var length = arrays.length,\n          iteratee = length > 1 ? arrays[length - 1] : undefined;\n\n      iteratee = typeof iteratee == 'function' ? (arrays.pop(), iteratee) : undefined;\n      return unzipWith(arrays, iteratee);\n    });\n\n    /*------------------------------------------------------------------------*/\n\n    /**\n     * Creates a `lodash` wrapper instance that wraps `value` with explicit method\n     * chain sequences enabled. The result of such sequences must be unwrapped\n     * with `_#value`.\n     *\n     * @static\n     * @memberOf _\n     * @since 1.3.0\n     * @category Seq\n     * @param {*} value The value to wrap.\n     * @returns {Object} Returns the new `lodash` wrapper instance.\n     * @example\n     *\n     * var users = [\n     *   { 'user': 'barney',  'age': 36 },\n     *   { 'user': 'fred',    'age': 40 },\n     *   { 'user': 'pebbles', 'age': 1 }\n     * ];\n     *\n     * var youngest = _\n     *   .chain(users)\n     *   .sortBy('age')\n     *   .map(function(o) {\n     *     return o.user + ' is ' + o.age;\n     *   })\n     *   .head()\n     *   .value();\n     * // => 'pebbles is 1'\n     */\n    function chain(value) {\n      var result = lodash(value);\n      result.__chain__ = true;\n      return result;\n    }\n\n    /**\n     * This method invokes `interceptor` and returns `value`. The interceptor\n     * is invoked with one argument; (value). The purpose of this method is to\n     * \"tap into\" a method chain sequence in order to modify intermediate results.\n     *\n     * @static\n     * @memberOf _\n     * @since 0.1.0\n     * @category Seq\n     * @param {*} value The value to provide to `interceptor`.\n     * @param {Function} interceptor The function to invoke.\n     * @returns {*} Returns `value`.\n     * @example\n     *\n     * _([1, 2, 3])\n     *  .tap(function(array) {\n     *    // Mutate input array.\n     *    array.pop();\n     *  })\n     *  .reverse()\n     *  .value();\n     * // => [2, 1]\n     */\n    function tap(value, interceptor) {\n      interceptor(value);\n      return value;\n    }\n\n    /**\n     * This method is like `_.tap` except that it returns the result of `interceptor`.\n     * The purpose of this method is to \"pass thru\" values replacing intermediate\n     * results in a method chain sequence.\n     *\n     * @static\n     * @memberOf _\n     * @since 3.0.0\n     * @category Seq\n     * @param {*} value The value to provide to `interceptor`.\n     * @param {Function} interceptor The function to invoke.\n     * @returns {*} Returns the result of `interceptor`.\n     * @example\n     *\n     * _('  abc  ')\n     *  .chain()\n     *  .trim()\n     *  .thru(function(value) {\n     *    return [value];\n     *  })\n     *  .value();\n     * // => ['abc']\n     */\n    function thru(value, interceptor) {\n      return interceptor(value);\n    }\n\n    /**\n     * This method is the wrapper version of `_.at`.\n     *\n     * @name at\n     * @memberOf _\n     * @since 1.0.0\n     * @category Seq\n     * @param {...(string|string[])} [paths] The property paths to pick.\n     * @returns {Object} Returns the new `lodash` wrapper instance.\n     * @example\n     *\n     * var object = { 'a': [{ 'b': { 'c': 3 } }, 4] };\n     *\n     * _(object).at(['a[0].b.c', 'a[1]']).value();\n     * // => [3, 4]\n     */\n    var wrapperAt = flatRest(function(paths) {\n      var length = paths.length,\n          start = length ? paths[0] : 0,\n          value = this.__wrapped__,\n          interceptor = function(object) { return baseAt(object, paths); };\n\n      if (length > 1 || this.__actions__.length ||\n          !(value instanceof LazyWrapper) || !isIndex(start)) {\n        return this.thru(interceptor);\n      }\n      value = value.slice(start, +start + (length ? 1 : 0));\n      value.__actions__.push({\n        'func': thru,\n        'args': [interceptor],\n        'thisArg': undefined\n      });\n      return new LodashWrapper(value, this.__chain__).thru(function(array) {\n        if (length && !array.length) {\n          array.push(undefined);\n        }\n        return array;\n      });\n    });\n\n    /**\n     * Creates a `lodash` wrapper instance with explicit method chain sequences enabled.\n     *\n     * @name chain\n     * @memberOf _\n     * @since 0.1.0\n     * @category Seq\n     * @returns {Object} Returns the new `lodash` wrapper instance.\n     * @example\n     *\n     * var users = [\n     *   { 'user': 'barney', 'age': 36 },\n     *   { 'user': 'fred',   'age': 40 }\n     * ];\n     *\n     * // A sequence without explicit chaining.\n     * _(users).head();\n     * // => { 'user': 'barney', 'age': 36 }\n     *\n     * // A sequence with explicit chaining.\n     * _(users)\n     *   .chain()\n     *   .head()\n     *   .pick('user')\n     *   .value();\n     * // => { 'user': 'barney' }\n     */\n    function wrapperChain() {\n      return chain(this);\n    }\n\n    /**\n     * Executes the chain sequence and returns the wrapped result.\n     *\n     * @name commit\n     * @memberOf _\n     * @since 3.2.0\n     * @category Seq\n     * @returns {Object} Returns the new `lodash` wrapper instance.\n     * @example\n     *\n     * var array = [1, 2];\n     * var wrapped = _(array).push(3);\n     *\n     * console.log(array);\n     * // => [1, 2]\n     *\n     * wrapped = wrapped.commit();\n     * console.log(array);\n     * // => [1, 2, 3]\n     *\n     * wrapped.last();\n     * // => 3\n     *\n     * console.log(array);\n     * // => [1, 2, 3]\n     */\n    function wrapperCommit() {\n      return new LodashWrapper(this.value(), this.__chain__);\n    }\n\n    /**\n     * Gets the next value on a wrapped object following the\n     * [iterator protocol](https://mdn.io/iteration_protocols#iterator).\n     *\n     * @name next\n     * @memberOf _\n     * @since 4.0.0\n     * @category Seq\n     * @returns {Object} Returns the next iterator value.\n     * @example\n     *\n     * var wrapped = _([1, 2]);\n     *\n     * wrapped.next();\n     * // => { 'done': false, 'value': 1 }\n     *\n     * wrapped.next();\n     * // => { 'done': false, 'value': 2 }\n     *\n     * wrapped.next();\n     * // => { 'done': true, 'value': undefined }\n     */\n    function wrapperNext() {\n      if (this.__values__ === undefined) {\n        this.__values__ = toArray(this.value());\n      }\n      var done = this.__index__ >= this.__values__.length,\n          value = done ? undefined : this.__values__[this.__index__++];\n\n      return { 'done': done, 'value': value };\n    }\n\n    /**\n     * Enables the wrapper to be iterable.\n     *\n     * @name Symbol.iterator\n     * @memberOf _\n     * @since 4.0.0\n     * @category Seq\n     * @returns {Object} Returns the wrapper object.\n     * @example\n     *\n     * var wrapped = _([1, 2]);\n     *\n     * wrapped[Symbol.iterator]() === wrapped;\n     * // => true\n     *\n     * Array.from(wrapped);\n     * // => [1, 2]\n     */\n    function wrapperToIterator() {\n      return this;\n    }\n\n    /**\n     * Creates a clone of the chain sequence planting `value` as the wrapped value.\n     *\n     * @name plant\n     * @memberOf _\n     * @since 3.2.0\n     * @category Seq\n     * @param {*} value The value to plant.\n     * @returns {Object} Returns the new `lodash` wrapper instance.\n     * @example\n     *\n     * function square(n) {\n     *   return n * n;\n     * }\n     *\n     * var wrapped = _([1, 2]).map(square);\n     * var other = wrapped.plant([3, 4]);\n     *\n     * other.value();\n     * // => [9, 16]\n     *\n     * wrapped.value();\n     * // => [1, 4]\n     */\n    function wrapperPlant(value) {\n      var result,\n          parent = this;\n\n      while (parent instanceof baseLodash) {\n        var clone = wrapperClone(parent);\n        clone.__index__ = 0;\n        clone.__values__ = undefined;\n        if (result) {\n          previous.__wrapped__ = clone;\n        } else {\n          result = clone;\n        }\n        var previous = clone;\n        parent = parent.__wrapped__;\n      }\n      previous.__wrapped__ = value;\n      return result;\n    }\n\n    /**\n     * This method is the wrapper version of `_.reverse`.\n     *\n     * **Note:** This method mutates the wrapped array.\n     *\n     * @name reverse\n     * @memberOf _\n     * @since 0.1.0\n     * @category Seq\n     * @returns {Object} Returns the new `lodash` wrapper instance.\n     * @example\n     *\n     * var array = [1, 2, 3];\n     *\n     * _(array).reverse().value()\n     * // => [3, 2, 1]\n     *\n     * console.log(array);\n     * // => [3, 2, 1]\n     */\n    function wrapperReverse() {\n      var value = this.__wrapped__;\n      if (value instanceof LazyWrapper) {\n        var wrapped = value;\n        if (this.__actions__.length) {\n          wrapped = new LazyWrapper(this);\n        }\n        wrapped = wrapped.reverse();\n        wrapped.__actions__.push({\n          'func': thru,\n          'args': [reverse],\n          'thisArg': undefined\n        });\n        return new LodashWrapper(wrapped, this.__chain__);\n      }\n      return this.thru(reverse);\n    }\n\n    /**\n     * Executes the chain sequence to resolve the unwrapped value.\n     *\n     * @name value\n     * @memberOf _\n     * @since 0.1.0\n     * @alias toJSON, valueOf\n     * @category Seq\n     * @returns {*} Returns the resolved unwrapped value.\n     * @example\n     *\n     * _([1, 2, 3]).value();\n     * // => [1, 2, 3]\n     */\n    function wrapperValue() {\n      return baseWrapperValue(this.__wrapped__, this.__actions__);\n    }\n\n    /*------------------------------------------------------------------------*/\n\n    /**\n     * Creates an object composed of keys generated from the results of running\n     * each element of `collection` thru `iteratee`. The corresponding value of\n     * each key is the number of times the key was returned by `iteratee`. The\n     * iteratee is invoked with one argument: (value).\n     *\n     * @static\n     * @memberOf _\n     * @since 0.5.0\n     * @category Collection\n     * @param {Array|Object} collection The collection to iterate over.\n     * @param {Function} [iteratee=_.identity] The iteratee to transform keys.\n     * @returns {Object} Returns the composed aggregate object.\n     * @example\n     *\n     * _.countBy([6.1, 4.2, 6.3], Math.floor);\n     * // => { '4': 1, '6': 2 }\n     *\n     * // The `_.property` iteratee shorthand.\n     * _.countBy(['one', 'two', 'three'], 'length');\n     * // => { '3': 2, '5': 1 }\n     */\n    var countBy = createAggregator(function(result, value, key) {\n      if (hasOwnProperty.call(result, key)) {\n        ++result[key];\n      } else {\n        baseAssignValue(result, key, 1);\n      }\n    });\n\n    /**\n     * Checks if `predicate` returns truthy for **all** elements of `collection`.\n     * Iteration is stopped once `predicate` returns falsey. The predicate is\n     * invoked with three arguments: (value, index|key, collection).\n     *\n     * **Note:** This method returns `true` for\n     * [empty collections](https://en.wikipedia.org/wiki/Empty_set) because\n     * [everything is true](https://en.wikipedia.org/wiki/Vacuous_truth) of\n     * elements of empty collections.\n     *\n     * @static\n     * @memberOf _\n     * @since 0.1.0\n     * @category Collection\n     * @param {Array|Object} collection The collection to iterate over.\n     * @param {Function} [predicate=_.identity] The function invoked per iteration.\n     * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.\n     * @returns {boolean} Returns `true` if all elements pass the predicate check,\n     *  else `false`.\n     * @example\n     *\n     * _.every([true, 1, null, 'yes'], Boolean);\n     * // => false\n     *\n     * var users = [\n     *   { 'user': 'barney', 'age': 36, 'active': false },\n     *   { 'user': 'fred',   'age': 40, 'active': false }\n     * ];\n     *\n     * // The `_.matches` iteratee shorthand.\n     * _.every(users, { 'user': 'barney', 'active': false });\n     * // => false\n     *\n     * // The `_.matchesProperty` iteratee shorthand.\n     * _.every(users, ['active', false]);\n     * // => true\n     *\n     * // The `_.property` iteratee shorthand.\n     * _.every(users, 'active');\n     * // => false\n     */\n    function every(collection, predicate, guard) {\n      var func = isArray(collection) ? arrayEvery : baseEvery;\n      if (guard && isIterateeCall(collection, predicate, guard)) {\n        predicate = undefined;\n      }\n      return func(collection, getIteratee(predicate, 3));\n    }\n\n    /**\n     * Iterates over elements of `collection`, returning an array of all elements\n     * `predicate` returns truthy for. The predicate is invoked with three\n     * arguments: (value, index|key, collection).\n     *\n     * **Note:** Unlike `_.remove`, this method returns a new array.\n     *\n     * @static\n     * @memberOf _\n     * @since 0.1.0\n     * @category Collection\n     * @param {Array|Object} collection The collection to iterate over.\n     * @param {Function} [predicate=_.identity] The function invoked per iteration.\n     * @returns {Array} Returns the new filtered array.\n     * @see _.reject\n     * @example\n     *\n     * var users = [\n     *   { 'user': 'barney', 'age': 36, 'active': true },\n     *   { 'user': 'fred',   'age': 40, 'active': false }\n     * ];\n     *\n     * _.filter(users, function(o) { return !o.active; });\n     * // => objects for ['fred']\n     *\n     * // The `_.matches` iteratee shorthand.\n     * _.filter(users, { 'age': 36, 'active': true });\n     * // => objects for ['barney']\n     *\n     * // The `_.matchesProperty` iteratee shorthand.\n     * _.filter(users, ['active', false]);\n     * // => objects for ['fred']\n     *\n     * // The `_.property` iteratee shorthand.\n     * _.filter(users, 'active');\n     * // => objects for ['barney']\n     *\n     * // Combining several predicates using `_.overEvery` or `_.overSome`.\n     * _.filter(users, _.overSome([{ 'age': 36 }, ['age', 40]]));\n     * // => objects for ['fred', 'barney']\n     */\n    function filter(collection, predicate) {\n      var func = isArray(collection) ? arrayFilter : baseFilter;\n      return func(collection, getIteratee(predicate, 3));\n    }\n\n    /**\n     * Iterates over elements of `collection`, returning the first element\n     * `predicate` returns truthy for. The predicate is invoked with three\n     * arguments: (value, index|key, collection).\n     *\n     * @static\n     * @memberOf _\n     * @since 0.1.0\n     * @category Collection\n     * @param {Array|Object} collection The collection to inspect.\n     * @param {Function} [predicate=_.identity] The function invoked per iteration.\n     * @param {number} [fromIndex=0] The index to search from.\n     * @returns {*} Returns the matched element, else `undefined`.\n     * @example\n     *\n     * var users = [\n     *   { 'user': 'barney',  'age': 36, 'active': true },\n     *   { 'user': 'fred',    'age': 40, 'active': false },\n     *   { 'user': 'pebbles', 'age': 1,  'active': true }\n     * ];\n     *\n     * _.find(users, function(o) { return o.age < 40; });\n     * // => object for 'barney'\n     *\n     * // The `_.matches` iteratee shorthand.\n     * _.find(users, { 'age': 1, 'active': true });\n     * // => object for 'pebbles'\n     *\n     * // The `_.matchesProperty` iteratee shorthand.\n     * _.find(users, ['active', false]);\n     * // => object for 'fred'\n     *\n     * // The `_.property` iteratee shorthand.\n     * _.find(users, 'active');\n     * // => object for 'barney'\n     */\n    var find = createFind(findIndex);\n\n    /**\n     * This method is like `_.find` except that it iterates over elements of\n     * `collection` from right to left.\n     *\n     * @static\n     * @memberOf _\n     * @since 2.0.0\n     * @category Collection\n     * @param {Array|Object} collection The collection to inspect.\n     * @param {Function} [predicate=_.identity] The function invoked per iteration.\n     * @param {number} [fromIndex=collection.length-1] The index to search from.\n     * @returns {*} Returns the matched element, else `undefined`.\n     * @example\n     *\n     * _.findLast([1, 2, 3, 4], function(n) {\n     *   return n % 2 == 1;\n     * });\n     * // => 3\n     */\n    var findLast = createFind(findLastIndex);\n\n    /**\n     * Creates a flattened array of values by running each element in `collection`\n     * thru `iteratee` and flattening the mapped results. The iteratee is invoked\n     * with three arguments: (value, index|key, collection).\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Collection\n     * @param {Array|Object} collection The collection to iterate over.\n     * @param {Function} [iteratee=_.identity] The function invoked per iteration.\n     * @returns {Array} Returns the new flattened array.\n     * @example\n     *\n     * function duplicate(n) {\n     *   return [n, n];\n     * }\n     *\n     * _.flatMap([1, 2], duplicate);\n     * // => [1, 1, 2, 2]\n     */\n    function flatMap(collection, iteratee) {\n      return baseFlatten(map(collection, iteratee), 1);\n    }\n\n    /**\n     * This method is like `_.flatMap` except that it recursively flattens the\n     * mapped results.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.7.0\n     * @category Collection\n     * @param {Array|Object} collection The collection to iterate over.\n     * @param {Function} [iteratee=_.identity] The function invoked per iteration.\n     * @returns {Array} Returns the new flattened array.\n     * @example\n     *\n     * function duplicate(n) {\n     *   return [[[n, n]]];\n     * }\n     *\n     * _.flatMapDeep([1, 2], duplicate);\n     * // => [1, 1, 2, 2]\n     */\n    function flatMapDeep(collection, iteratee) {\n      return baseFlatten(map(collection, iteratee), INFINITY);\n    }\n\n    /**\n     * This method is like `_.flatMap` except that it recursively flattens the\n     * mapped results up to `depth` times.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.7.0\n     * @category Collection\n     * @param {Array|Object} collection The collection to iterate over.\n     * @param {Function} [iteratee=_.identity] The function invoked per iteration.\n     * @param {number} [depth=1] The maximum recursion depth.\n     * @returns {Array} Returns the new flattened array.\n     * @example\n     *\n     * function duplicate(n) {\n     *   return [[[n, n]]];\n     * }\n     *\n     * _.flatMapDepth([1, 2], duplicate, 2);\n     * // => [[1, 1], [2, 2]]\n     */\n    function flatMapDepth(collection, iteratee, depth) {\n      depth = depth === undefined ? 1 : toInteger(depth);\n      return baseFlatten(map(collection, iteratee), depth);\n    }\n\n    /**\n     * Iterates over elements of `collection` and invokes `iteratee` for each element.\n     * The iteratee is invoked with three arguments: (value, index|key, collection).\n     * Iteratee functions may exit iteration early by explicitly returning `false`.\n     *\n     * **Note:** As with other \"Collections\" methods, objects with a \"length\"\n     * property are iterated like arrays. To avoid this behavior use `_.forIn`\n     * or `_.forOwn` for object iteration.\n     *\n     * @static\n     * @memberOf _\n     * @since 0.1.0\n     * @alias each\n     * @category Collection\n     * @param {Array|Object} collection The collection to iterate over.\n     * @param {Function} [iteratee=_.identity] The function invoked per iteration.\n     * @returns {Array|Object} Returns `collection`.\n     * @see _.forEachRight\n     * @example\n     *\n     * _.forEach([1, 2], function(value) {\n     *   console.log(value);\n     * });\n     * // => Logs `1` then `2`.\n     *\n     * _.forEach({ 'a': 1, 'b': 2 }, function(value, key) {\n     *   console.log(key);\n     * });\n     * // => Logs 'a' then 'b' (iteration order is not guaranteed).\n     */\n    function forEach(collection, iteratee) {\n      var func = isArray(collection) ? arrayEach : baseEach;\n      return func(collection, getIteratee(iteratee, 3));\n    }\n\n    /**\n     * This method is like `_.forEach` except that it iterates over elements of\n     * `collection` from right to left.\n     *\n     * @static\n     * @memberOf _\n     * @since 2.0.0\n     * @alias eachRight\n     * @category Collection\n     * @param {Array|Object} collection The collection to iterate over.\n     * @param {Function} [iteratee=_.identity] The function invoked per iteration.\n     * @returns {Array|Object} Returns `collection`.\n     * @see _.forEach\n     * @example\n     *\n     * _.forEachRight([1, 2], function(value) {\n     *   console.log(value);\n     * });\n     * // => Logs `2` then `1`.\n     */\n    function forEachRight(collection, iteratee) {\n      var func = isArray(collection) ? arrayEachRight : baseEachRight;\n      return func(collection, getIteratee(iteratee, 3));\n    }\n\n    /**\n     * Creates an object composed of keys generated from the results of running\n     * each element of `collection` thru `iteratee`. The order of grouped values\n     * is determined by the order they occur in `collection`. The corresponding\n     * value of each key is an array of elements responsible for generating the\n     * key. The iteratee is invoked with one argument: (value).\n     *\n     * @static\n     * @memberOf _\n     * @since 0.1.0\n     * @category Collection\n     * @param {Array|Object} collection The collection to iterate over.\n     * @param {Function} [iteratee=_.identity] The iteratee to transform keys.\n     * @returns {Object} Returns the composed aggregate object.\n     * @example\n     *\n     * _.groupBy([6.1, 4.2, 6.3], Math.floor);\n     * // => { '4': [4.2], '6': [6.1, 6.3] }\n     *\n     * // The `_.property` iteratee shorthand.\n     * _.groupBy(['one', 'two', 'three'], 'length');\n     * // => { '3': ['one', 'two'], '5': ['three'] }\n     */\n    var groupBy = createAggregator(function(result, value, key) {\n      if (hasOwnProperty.call(result, key)) {\n        result[key].push(value);\n      } else {\n        baseAssignValue(result, key, [value]);\n      }\n    });\n\n    /**\n     * Checks if `value` is in `collection`. If `collection` is a string, it's\n     * checked for a substring of `value`, otherwise\n     * [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)\n     * is used for equality comparisons. If `fromIndex` is negative, it's used as\n     * the offset from the end of `collection`.\n     *\n     * @static\n     * @memberOf _\n     * @since 0.1.0\n     * @category Collection\n     * @param {Array|Object|string} collection The collection to inspect.\n     * @param {*} value The value to search for.\n     * @param {number} [fromIndex=0] The index to search from.\n     * @param- {Object} [guard] Enables use as an iteratee for methods like `_.reduce`.\n     * @returns {boolean} Returns `true` if `value` is found, else `false`.\n     * @example\n     *\n     * _.includes([1, 2, 3], 1);\n     * // => true\n     *\n     * _.includes([1, 2, 3], 1, 2);\n     * // => false\n     *\n     * _.includes({ 'a': 1, 'b': 2 }, 1);\n     * // => true\n     *\n     * _.includes('abcd', 'bc');\n     * // => true\n     */\n    function includes(collection, value, fromIndex, guard) {\n      collection = isArrayLike(collection) ? collection : values(collection);\n      fromIndex = (fromIndex && !guard) ? toInteger(fromIndex) : 0;\n\n      var length = collection.length;\n      if (fromIndex < 0) {\n        fromIndex = nativeMax(length + fromIndex, 0);\n      }\n      return isString(collection)\n        ? (fromIndex <= length && collection.indexOf(value, fromIndex) > -1)\n        : (!!length && baseIndexOf(collection, value, fromIndex) > -1);\n    }\n\n    /**\n     * Invokes the method at `path` of each element in `collection`, returning\n     * an array of the results of each invoked method. Any additional arguments\n     * are provided to each invoked method. If `path` is a function, it's invoked\n     * for, and `this` bound to, each element in `collection`.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Collection\n     * @param {Array|Object} collection The collection to iterate over.\n     * @param {Array|Function|string} path The path of the method to invoke or\n     *  the function invoked per iteration.\n     * @param {...*} [args] The arguments to invoke each method with.\n     * @returns {Array} Returns the array of results.\n     * @example\n     *\n     * _.invokeMap([[5, 1, 7], [3, 2, 1]], 'sort');\n     * // => [[1, 5, 7], [1, 2, 3]]\n     *\n     * _.invokeMap([123, 456], String.prototype.split, '');\n     * // => [['1', '2', '3'], ['4', '5', '6']]\n     */\n    var invokeMap = baseRest(function(collection, path, args) {\n      var index = -1,\n          isFunc = typeof path == 'function',\n          result = isArrayLike(collection) ? Array(collection.length) : [];\n\n      baseEach(collection, function(value) {\n        result[++index] = isFunc ? apply(path, value, args) : baseInvoke(value, path, args);\n      });\n      return result;\n    });\n\n    /**\n     * Creates an object composed of keys generated from the results of running\n     * each element of `collection` thru `iteratee`. The corresponding value of\n     * each key is the last element responsible for generating the key. The\n     * iteratee is invoked with one argument: (value).\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Collection\n     * @param {Array|Object} collection The collection to iterate over.\n     * @param {Function} [iteratee=_.identity] The iteratee to transform keys.\n     * @returns {Object} Returns the composed aggregate object.\n     * @example\n     *\n     * var array = [\n     *   { 'dir': 'left', 'code': 97 },\n     *   { 'dir': 'right', 'code': 100 }\n     * ];\n     *\n     * _.keyBy(array, function(o) {\n     *   return String.fromCharCode(o.code);\n     * });\n     * // => { 'a': { 'dir': 'left', 'code': 97 }, 'd': { 'dir': 'right', 'code': 100 } }\n     *\n     * _.keyBy(array, 'dir');\n     * // => { 'left': { 'dir': 'left', 'code': 97 }, 'right': { 'dir': 'right', 'code': 100 } }\n     */\n    var keyBy = createAggregator(function(result, value, key) {\n      baseAssignValue(result, key, value);\n    });\n\n    /**\n     * Creates an array of values by running each element in `collection` thru\n     * `iteratee`. The iteratee is invoked with three arguments:\n     * (value, index|key, collection).\n     *\n     * Many lodash methods are guarded to work as iteratees for methods like\n     * `_.every`, `_.filter`, `_.map`, `_.mapValues`, `_.reject`, and `_.some`.\n     *\n     * The guarded methods are:\n     * `ary`, `chunk`, `curry`, `curryRight`, `drop`, `dropRight`, `every`,\n     * `fill`, `invert`, `parseInt`, `random`, `range`, `rangeRight`, `repeat`,\n     * `sampleSize`, `slice`, `some`, `sortBy`, `split`, `take`, `takeRight`,\n     * `template`, `trim`, `trimEnd`, `trimStart`, and `words`\n     *\n     * @static\n     * @memberOf _\n     * @since 0.1.0\n     * @category Collection\n     * @param {Array|Object} collection The collection to iterate over.\n     * @param {Function} [iteratee=_.identity] The function invoked per iteration.\n     * @returns {Array} Returns the new mapped array.\n     * @example\n     *\n     * function square(n) {\n     *   return n * n;\n     * }\n     *\n     * _.map([4, 8], square);\n     * // => [16, 64]\n     *\n     * _.map({ 'a': 4, 'b': 8 }, square);\n     * // => [16, 64] (iteration order is not guaranteed)\n     *\n     * var users = [\n     *   { 'user': 'barney' },\n     *   { 'user': 'fred' }\n     * ];\n     *\n     * // The `_.property` iteratee shorthand.\n     * _.map(users, 'user');\n     * // => ['barney', 'fred']\n     */\n    function map(collection, iteratee) {\n      var func = isArray(collection) ? arrayMap : baseMap;\n      return func(collection, getIteratee(iteratee, 3));\n    }\n\n    /**\n     * This method is like `_.sortBy` except that it allows specifying the sort\n     * orders of the iteratees to sort by. If `orders` is unspecified, all values\n     * are sorted in ascending order. Otherwise, specify an order of \"desc\" for\n     * descending or \"asc\" for ascending sort order of corresponding values.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Collection\n     * @param {Array|Object} collection The collection to iterate over.\n     * @param {Array[]|Function[]|Object[]|string[]} [iteratees=[_.identity]]\n     *  The iteratees to sort by.\n     * @param {string[]} [orders] The sort orders of `iteratees`.\n     * @param- {Object} [guard] Enables use as an iteratee for methods like `_.reduce`.\n     * @returns {Array} Returns the new sorted array.\n     * @example\n     *\n     * var users = [\n     *   { 'user': 'fred',   'age': 48 },\n     *   { 'user': 'barney', 'age': 34 },\n     *   { 'user': 'fred',   'age': 40 },\n     *   { 'user': 'barney', 'age': 36 }\n     * ];\n     *\n     * // Sort by `user` in ascending order and by `age` in descending order.\n     * _.orderBy(users, ['user', 'age'], ['asc', 'desc']);\n     * // => objects for [['barney', 36], ['barney', 34], ['fred', 48], ['fred', 40]]\n     */\n    function orderBy(collection, iteratees, orders, guard) {\n      if (collection == null) {\n        return [];\n      }\n      if (!isArray(iteratees)) {\n        iteratees = iteratees == null ? [] : [iteratees];\n      }\n      orders = guard ? undefined : orders;\n      if (!isArray(orders)) {\n        orders = orders == null ? [] : [orders];\n      }\n      return baseOrderBy(collection, iteratees, orders);\n    }\n\n    /**\n     * Creates an array of elements split into two groups, the first of which\n     * contains elements `predicate` returns truthy for, the second of which\n     * contains elements `predicate` returns falsey for. The predicate is\n     * invoked with one argument: (value).\n     *\n     * @static\n     * @memberOf _\n     * @since 3.0.0\n     * @category Collection\n     * @param {Array|Object} collection The collection to iterate over.\n     * @param {Function} [predicate=_.identity] The function invoked per iteration.\n     * @returns {Array} Returns the array of grouped elements.\n     * @example\n     *\n     * var users = [\n     *   { 'user': 'barney',  'age': 36, 'active': false },\n     *   { 'user': 'fred',    'age': 40, 'active': true },\n     *   { 'user': 'pebbles', 'age': 1,  'active': false }\n     * ];\n     *\n     * _.partition(users, function(o) { return o.active; });\n     * // => objects for [['fred'], ['barney', 'pebbles']]\n     *\n     * // The `_.matches` iteratee shorthand.\n     * _.partition(users, { 'age': 1, 'active': false });\n     * // => objects for [['pebbles'], ['barney', 'fred']]\n     *\n     * // The `_.matchesProperty` iteratee shorthand.\n     * _.partition(users, ['active', false]);\n     * // => objects for [['barney', 'pebbles'], ['fred']]\n     *\n     * // The `_.property` iteratee shorthand.\n     * _.partition(users, 'active');\n     * // => objects for [['fred'], ['barney', 'pebbles']]\n     */\n    var partition = createAggregator(function(result, value, key) {\n      result[key ? 0 : 1].push(value);\n    }, function() { return [[], []]; });\n\n    /**\n     * Reduces `collection` to a value which is the accumulated result of running\n     * each element in `collection` thru `iteratee`, where each successive\n     * invocation is supplied the return value of the previous. If `accumulator`\n     * is not given, the first element of `collection` is used as the initial\n     * value. The iteratee is invoked with four arguments:\n     * (accumulator, value, index|key, collection).\n     *\n     * Many lodash methods are guarded to work as iteratees for methods like\n     * `_.reduce`, `_.reduceRight`, and `_.transform`.\n     *\n     * The guarded methods are:\n     * `assign`, `defaults`, `defaultsDeep`, `includes`, `merge`, `orderBy`,\n     * and `sortBy`\n     *\n     * @static\n     * @memberOf _\n     * @since 0.1.0\n     * @category Collection\n     * @param {Array|Object} collection The collection to iterate over.\n     * @param {Function} [iteratee=_.identity] The function invoked per iteration.\n     * @param {*} [accumulator] The initial value.\n     * @returns {*} Returns the accumulated value.\n     * @see _.reduceRight\n     * @example\n     *\n     * _.reduce([1, 2], function(sum, n) {\n     *   return sum + n;\n     * }, 0);\n     * // => 3\n     *\n     * _.reduce({ 'a': 1, 'b': 2, 'c': 1 }, function(result, value, key) {\n     *   (result[value] || (result[value] = [])).push(key);\n     *   return result;\n     * }, {});\n     * // => { '1': ['a', 'c'], '2': ['b'] } (iteration order is not guaranteed)\n     */\n    function reduce(collection, iteratee, accumulator) {\n      var func = isArray(collection) ? arrayReduce : baseReduce,\n          initAccum = arguments.length < 3;\n\n      return func(collection, getIteratee(iteratee, 4), accumulator, initAccum, baseEach);\n    }\n\n    /**\n     * This method is like `_.reduce` except that it iterates over elements of\n     * `collection` from right to left.\n     *\n     * @static\n     * @memberOf _\n     * @since 0.1.0\n     * @category Collection\n     * @param {Array|Object} collection The collection to iterate over.\n     * @param {Function} [iteratee=_.identity] The function invoked per iteration.\n     * @param {*} [accumulator] The initial value.\n     * @returns {*} Returns the accumulated value.\n     * @see _.reduce\n     * @example\n     *\n     * var array = [[0, 1], [2, 3], [4, 5]];\n     *\n     * _.reduceRight(array, function(flattened, other) {\n     *   return flattened.concat(other);\n     * }, []);\n     * // => [4, 5, 2, 3, 0, 1]\n     */\n    function reduceRight(collection, iteratee, accumulator) {\n      var func = isArray(collection) ? arrayReduceRight : baseReduce,\n          initAccum = arguments.length < 3;\n\n      return func(collection, getIteratee(iteratee, 4), accumulator, initAccum, baseEachRight);\n    }\n\n    /**\n     * The opposite of `_.filter`; this method returns the elements of `collection`\n     * that `predicate` does **not** return truthy for.\n     *\n     * @static\n     * @memberOf _\n     * @since 0.1.0\n     * @category Collection\n     * @param {Array|Object} collection The collection to iterate over.\n     * @param {Function} [predicate=_.identity] The function invoked per iteration.\n     * @returns {Array} Returns the new filtered array.\n     * @see _.filter\n     * @example\n     *\n     * var users = [\n     *   { 'user': 'barney', 'age': 36, 'active': false },\n     *   { 'user': 'fred',   'age': 40, 'active': true }\n     * ];\n     *\n     * _.reject(users, function(o) { return !o.active; });\n     * // => objects for ['fred']\n     *\n     * // The `_.matches` iteratee shorthand.\n     * _.reject(users, { 'age': 40, 'active': true });\n     * // => objects for ['barney']\n     *\n     * // The `_.matchesProperty` iteratee shorthand.\n     * _.reject(users, ['active', false]);\n     * // => objects for ['fred']\n     *\n     * // The `_.property` iteratee shorthand.\n     * _.reject(users, 'active');\n     * // => objects for ['barney']\n     */\n    function reject(collection, predicate) {\n      var func = isArray(collection) ? arrayFilter : baseFilter;\n      return func(collection, negate(getIteratee(predicate, 3)));\n    }\n\n    /**\n     * Gets a random element from `collection`.\n     *\n     * @static\n     * @memberOf _\n     * @since 2.0.0\n     * @category Collection\n     * @param {Array|Object} collection The collection to sample.\n     * @returns {*} Returns the random element.\n     * @example\n     *\n     * _.sample([1, 2, 3, 4]);\n     * // => 2\n     */\n    function sample(collection) {\n      var func = isArray(collection) ? arraySample : baseSample;\n      return func(collection);\n    }\n\n    /**\n     * Gets `n` random elements at unique keys from `collection` up to the\n     * size of `collection`.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Collection\n     * @param {Array|Object} collection The collection to sample.\n     * @param {number} [n=1] The number of elements to sample.\n     * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.\n     * @returns {Array} Returns the random elements.\n     * @example\n     *\n     * _.sampleSize([1, 2, 3], 2);\n     * // => [3, 1]\n     *\n     * _.sampleSize([1, 2, 3], 4);\n     * // => [2, 3, 1]\n     */\n    function sampleSize(collection, n, guard) {\n      if ((guard ? isIterateeCall(collection, n, guard) : n === undefined)) {\n        n = 1;\n      } else {\n        n = toInteger(n);\n      }\n      var func = isArray(collection) ? arraySampleSize : baseSampleSize;\n      return func(collection, n);\n    }\n\n    /**\n     * Creates an array of shuffled values, using a version of the\n     * [Fisher-Yates shuffle](https://en.wikipedia.org/wiki/Fisher-Yates_shuffle).\n     *\n     * @static\n     * @memberOf _\n     * @since 0.1.0\n     * @category Collection\n     * @param {Array|Object} collection The collection to shuffle.\n     * @returns {Array} Returns the new shuffled array.\n     * @example\n     *\n     * _.shuffle([1, 2, 3, 4]);\n     * // => [4, 1, 3, 2]\n     */\n    function shuffle(collection) {\n      var func = isArray(collection) ? arrayShuffle : baseShuffle;\n      return func(collection);\n    }\n\n    /**\n     * Gets the size of `collection` by returning its length for array-like\n     * values or the number of own enumerable string keyed properties for objects.\n     *\n     * @static\n     * @memberOf _\n     * @since 0.1.0\n     * @category Collection\n     * @param {Array|Object|string} collection The collection to inspect.\n     * @returns {number} Returns the collection size.\n     * @example\n     *\n     * _.size([1, 2, 3]);\n     * // => 3\n     *\n     * _.size({ 'a': 1, 'b': 2 });\n     * // => 2\n     *\n     * _.size('pebbles');\n     * // => 7\n     */\n    function size(collection) {\n      if (collection == null) {\n        return 0;\n      }\n      if (isArrayLike(collection)) {\n        return isString(collection) ? stringSize(collection) : collection.length;\n      }\n      var tag = getTag(collection);\n      if (tag == mapTag || tag == setTag) {\n        return collection.size;\n      }\n      return baseKeys(collection).length;\n    }\n\n    /**\n     * Checks if `predicate` returns truthy for **any** element of `collection`.\n     * Iteration is stopped once `predicate` returns truthy. The predicate is\n     * invoked with three arguments: (value, index|key, collection).\n     *\n     * @static\n     * @memberOf _\n     * @since 0.1.0\n     * @category Collection\n     * @param {Array|Object} collection The collection to iterate over.\n     * @param {Function} [predicate=_.identity] The function invoked per iteration.\n     * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.\n     * @returns {boolean} Returns `true` if any element passes the predicate check,\n     *  else `false`.\n     * @example\n     *\n     * _.some([null, 0, 'yes', false], Boolean);\n     * // => true\n     *\n     * var users = [\n     *   { 'user': 'barney', 'active': true },\n     *   { 'user': 'fred',   'active': false }\n     * ];\n     *\n     * // The `_.matches` iteratee shorthand.\n     * _.some(users, { 'user': 'barney', 'active': false });\n     * // => false\n     *\n     * // The `_.matchesProperty` iteratee shorthand.\n     * _.some(users, ['active', false]);\n     * // => true\n     *\n     * // The `_.property` iteratee shorthand.\n     * _.some(users, 'active');\n     * // => true\n     */\n    function some(collection, predicate, guard) {\n      var func = isArray(collection) ? arraySome : baseSome;\n      if (guard && isIterateeCall(collection, predicate, guard)) {\n        predicate = undefined;\n      }\n      return func(collection, getIteratee(predicate, 3));\n    }\n\n    /**\n     * Creates an array of elements, sorted in ascending order by the results of\n     * running each element in a collection thru each iteratee. This method\n     * performs a stable sort, that is, it preserves the original sort order of\n     * equal elements. The iteratees are invoked with one argument: (value).\n     *\n     * @static\n     * @memberOf _\n     * @since 0.1.0\n     * @category Collection\n     * @param {Array|Object} collection The collection to iterate over.\n     * @param {...(Function|Function[])} [iteratees=[_.identity]]\n     *  The iteratees to sort by.\n     * @returns {Array} Returns the new sorted array.\n     * @example\n     *\n     * var users = [\n     *   { 'user': 'fred',   'age': 48 },\n     *   { 'user': 'barney', 'age': 36 },\n     *   { 'user': 'fred',   'age': 30 },\n     *   { 'user': 'barney', 'age': 34 }\n     * ];\n     *\n     * _.sortBy(users, [function(o) { return o.user; }]);\n     * // => objects for [['barney', 36], ['barney', 34], ['fred', 48], ['fred', 30]]\n     *\n     * _.sortBy(users, ['user', 'age']);\n     * // => objects for [['barney', 34], ['barney', 36], ['fred', 30], ['fred', 48]]\n     */\n    var sortBy = baseRest(function(collection, iteratees) {\n      if (collection == null) {\n        return [];\n      }\n      var length = iteratees.length;\n      if (length > 1 && isIterateeCall(collection, iteratees[0], iteratees[1])) {\n        iteratees = [];\n      } else if (length > 2 && isIterateeCall(iteratees[0], iteratees[1], iteratees[2])) {\n        iteratees = [iteratees[0]];\n      }\n      return baseOrderBy(collection, baseFlatten(iteratees, 1), []);\n    });\n\n    /*------------------------------------------------------------------------*/\n\n    /**\n     * Gets the timestamp of the number of milliseconds that have elapsed since\n     * the Unix epoch (1 January 1970 00:00:00 UTC).\n     *\n     * @static\n     * @memberOf _\n     * @since 2.4.0\n     * @category Date\n     * @returns {number} Returns the timestamp.\n     * @example\n     *\n     * _.defer(function(stamp) {\n     *   console.log(_.now() - stamp);\n     * }, _.now());\n     * // => Logs the number of milliseconds it took for the deferred invocation.\n     */\n    var now = ctxNow || function() {\n      return root.Date.now();\n    };\n\n    /*------------------------------------------------------------------------*/\n\n    /**\n     * The opposite of `_.before`; this method creates a function that invokes\n     * `func` once it's called `n` or more times.\n     *\n     * @static\n     * @memberOf _\n     * @since 0.1.0\n     * @category Function\n     * @param {number} n The number of calls before `func` is invoked.\n     * @param {Function} func The function to restrict.\n     * @returns {Function} Returns the new restricted function.\n     * @example\n     *\n     * var saves = ['profile', 'settings'];\n     *\n     * var done = _.after(saves.length, function() {\n     *   console.log('done saving!');\n     * });\n     *\n     * _.forEach(saves, function(type) {\n     *   asyncSave({ 'type': type, 'complete': done });\n     * });\n     * // => Logs 'done saving!' after the two async saves have completed.\n     */\n    function after(n, func) {\n      if (typeof func != 'function') {\n        throw new TypeError(FUNC_ERROR_TEXT);\n      }\n      n = toInteger(n);\n      return function() {\n        if (--n < 1) {\n          return func.apply(this, arguments);\n        }\n      };\n    }\n\n    /**\n     * Creates a function that invokes `func`, with up to `n` arguments,\n     * ignoring any additional arguments.\n     *\n     * @static\n     * @memberOf _\n     * @since 3.0.0\n     * @category Function\n     * @param {Function} func The function to cap arguments for.\n     * @param {number} [n=func.length] The arity cap.\n     * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.\n     * @returns {Function} Returns the new capped function.\n     * @example\n     *\n     * _.map(['6', '8', '10'], _.ary(parseInt, 1));\n     * // => [6, 8, 10]\n     */\n    function ary(func, n, guard) {\n      n = guard ? undefined : n;\n      n = (func && n == null) ? func.length : n;\n      return createWrap(func, WRAP_ARY_FLAG, undefined, undefined, undefined, undefined, n);\n    }\n\n    /**\n     * Creates a function that invokes `func`, with the `this` binding and arguments\n     * of the created function, while it's called less than `n` times. Subsequent\n     * calls to the created function return the result of the last `func` invocation.\n     *\n     * @static\n     * @memberOf _\n     * @since 3.0.0\n     * @category Function\n     * @param {number} n The number of calls at which `func` is no longer invoked.\n     * @param {Function} func The function to restrict.\n     * @returns {Function} Returns the new restricted function.\n     * @example\n     *\n     * jQuery(element).on('click', _.before(5, addContactToList));\n     * // => Allows adding up to 4 contacts to the list.\n     */\n    function before(n, func) {\n      var result;\n      if (typeof func != 'function') {\n        throw new TypeError(FUNC_ERROR_TEXT);\n      }\n      n = toInteger(n);\n      return function() {\n        if (--n > 0) {\n          result = func.apply(this, arguments);\n        }\n        if (n <= 1) {\n          func = undefined;\n        }\n        return result;\n      };\n    }\n\n    /**\n     * Creates a function that invokes `func` with the `this` binding of `thisArg`\n     * and `partials` prepended to the arguments it receives.\n     *\n     * The `_.bind.placeholder` value, which defaults to `_` in monolithic builds,\n     * may be used as a placeholder for partially applied arguments.\n     *\n     * **Note:** Unlike native `Function#bind`, this method doesn't set the \"length\"\n     * property of bound functions.\n     *\n     * @static\n     * @memberOf _\n     * @since 0.1.0\n     * @category Function\n     * @param {Function} func The function to bind.\n     * @param {*} thisArg The `this` binding of `func`.\n     * @param {...*} [partials] The arguments to be partially applied.\n     * @returns {Function} Returns the new bound function.\n     * @example\n     *\n     * function greet(greeting, punctuation) {\n     *   return greeting + ' ' + this.user + punctuation;\n     * }\n     *\n     * var object = { 'user': 'fred' };\n     *\n     * var bound = _.bind(greet, object, 'hi');\n     * bound('!');\n     * // => 'hi fred!'\n     *\n     * // Bound with placeholders.\n     * var bound = _.bind(greet, object, _, '!');\n     * bound('hi');\n     * // => 'hi fred!'\n     */\n    var bind = baseRest(function(func, thisArg, partials) {\n      var bitmask = WRAP_BIND_FLAG;\n      if (partials.length) {\n        var holders = replaceHolders(partials, getHolder(bind));\n        bitmask |= WRAP_PARTIAL_FLAG;\n      }\n      return createWrap(func, bitmask, thisArg, partials, holders);\n    });\n\n    /**\n     * Creates a function that invokes the method at `object[key]` with `partials`\n     * prepended to the arguments it receives.\n     *\n     * This method differs from `_.bind` by allowing bound functions to reference\n     * methods that may be redefined or don't yet exist. See\n     * [Peter Michaux's article](http://peter.michaux.ca/articles/lazy-function-definition-pattern)\n     * for more details.\n     *\n     * The `_.bindKey.placeholder` value, which defaults to `_` in monolithic\n     * builds, may be used as a placeholder for partially applied arguments.\n     *\n     * @static\n     * @memberOf _\n     * @since 0.10.0\n     * @category Function\n     * @param {Object} object The object to invoke the method on.\n     * @param {string} key The key of the method.\n     * @param {...*} [partials] The arguments to be partially applied.\n     * @returns {Function} Returns the new bound function.\n     * @example\n     *\n     * var object = {\n     *   'user': 'fred',\n     *   'greet': function(greeting, punctuation) {\n     *     return greeting + ' ' + this.user + punctuation;\n     *   }\n     * };\n     *\n     * var bound = _.bindKey(object, 'greet', 'hi');\n     * bound('!');\n     * // => 'hi fred!'\n     *\n     * object.greet = function(greeting, punctuation) {\n     *   return greeting + 'ya ' + this.user + punctuation;\n     * };\n     *\n     * bound('!');\n     * // => 'hiya fred!'\n     *\n     * // Bound with placeholders.\n     * var bound = _.bindKey(object, 'greet', _, '!');\n     * bound('hi');\n     * // => 'hiya fred!'\n     */\n    var bindKey = baseRest(function(object, key, partials) {\n      var bitmask = WRAP_BIND_FLAG | WRAP_BIND_KEY_FLAG;\n      if (partials.length) {\n        var holders = replaceHolders(partials, getHolder(bindKey));\n        bitmask |= WRAP_PARTIAL_FLAG;\n      }\n      return createWrap(key, bitmask, object, partials, holders);\n    });\n\n    /**\n     * Creates a function that accepts arguments of `func` and either invokes\n     * `func` returning its result, if at least `arity` number of arguments have\n     * been provided, or returns a function that accepts the remaining `func`\n     * arguments, and so on. The arity of `func` may be specified if `func.length`\n     * is not sufficient.\n     *\n     * The `_.curry.placeholder` value, which defaults to `_` in monolithic builds,\n     * may be used as a placeholder for provided arguments.\n     *\n     * **Note:** This method doesn't set the \"length\" property of curried functions.\n     *\n     * @static\n     * @memberOf _\n     * @since 2.0.0\n     * @category Function\n     * @param {Function} func The function to curry.\n     * @param {number} [arity=func.length] The arity of `func`.\n     * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.\n     * @returns {Function} Returns the new curried function.\n     * @example\n     *\n     * var abc = function(a, b, c) {\n     *   return [a, b, c];\n     * };\n     *\n     * var curried = _.curry(abc);\n     *\n     * curried(1)(2)(3);\n     * // => [1, 2, 3]\n     *\n     * curried(1, 2)(3);\n     * // => [1, 2, 3]\n     *\n     * curried(1, 2, 3);\n     * // => [1, 2, 3]\n     *\n     * // Curried with placeholders.\n     * curried(1)(_, 3)(2);\n     * // => [1, 2, 3]\n     */\n    function curry(func, arity, guard) {\n      arity = guard ? undefined : arity;\n      var result = createWrap(func, WRAP_CURRY_FLAG, undefined, undefined, undefined, undefined, undefined, arity);\n      result.placeholder = curry.placeholder;\n      return result;\n    }\n\n    /**\n     * This method is like `_.curry` except that arguments are applied to `func`\n     * in the manner of `_.partialRight` instead of `_.partial`.\n     *\n     * The `_.curryRight.placeholder` value, which defaults to `_` in monolithic\n     * builds, may be used as a placeholder for provided arguments.\n     *\n     * **Note:** This method doesn't set the \"length\" property of curried functions.\n     *\n     * @static\n     * @memberOf _\n     * @since 3.0.0\n     * @category Function\n     * @param {Function} func The function to curry.\n     * @param {number} [arity=func.length] The arity of `func`.\n     * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.\n     * @returns {Function} Returns the new curried function.\n     * @example\n     *\n     * var abc = function(a, b, c) {\n     *   return [a, b, c];\n     * };\n     *\n     * var curried = _.curryRight(abc);\n     *\n     * curried(3)(2)(1);\n     * // => [1, 2, 3]\n     *\n     * curried(2, 3)(1);\n     * // => [1, 2, 3]\n     *\n     * curried(1, 2, 3);\n     * // => [1, 2, 3]\n     *\n     * // Curried with placeholders.\n     * curried(3)(1, _)(2);\n     * // => [1, 2, 3]\n     */\n    function curryRight(func, arity, guard) {\n      arity = guard ? undefined : arity;\n      var result = createWrap(func, WRAP_CURRY_RIGHT_FLAG, undefined, undefined, undefined, undefined, undefined, arity);\n      result.placeholder = curryRight.placeholder;\n      return result;\n    }\n\n    /**\n     * Creates a debounced function that delays invoking `func` until after `wait`\n     * milliseconds have elapsed since the last time the debounced function was\n     * invoked. The debounced function comes with a `cancel` method to cancel\n     * delayed `func` invocations and a `flush` method to immediately invoke them.\n     * Provide `options` to indicate whether `func` should be invoked on the\n     * leading and/or trailing edge of the `wait` timeout. The `func` is invoked\n     * with the last arguments provided to the debounced function. Subsequent\n     * calls to the debounced function return the result of the last `func`\n     * invocation.\n     *\n     * **Note:** If `leading` and `trailing` options are `true`, `func` is\n     * invoked on the trailing edge of the timeout only if the debounced function\n     * is invoked more than once during the `wait` timeout.\n     *\n     * If `wait` is `0` and `leading` is `false`, `func` invocation is deferred\n     * until to the next tick, similar to `setTimeout` with a timeout of `0`.\n     *\n     * See [David Corbacho's article](https://css-tricks.com/debouncing-throttling-explained-examples/)\n     * for details over the differences between `_.debounce` and `_.throttle`.\n     *\n     * @static\n     * @memberOf _\n     * @since 0.1.0\n     * @category Function\n     * @param {Function} func The function to debounce.\n     * @param {number} [wait=0] The number of milliseconds to delay.\n     * @param {Object} [options={}] The options object.\n     * @param {boolean} [options.leading=false]\n     *  Specify invoking on the leading edge of the timeout.\n     * @param {number} [options.maxWait]\n     *  The maximum time `func` is allowed to be delayed before it's invoked.\n     * @param {boolean} [options.trailing=true]\n     *  Specify invoking on the trailing edge of the timeout.\n     * @returns {Function} Returns the new debounced function.\n     * @example\n     *\n     * // Avoid costly calculations while the window size is in flux.\n     * jQuery(window).on('resize', _.debounce(calculateLayout, 150));\n     *\n     * // Invoke `sendMail` when clicked, debouncing subsequent calls.\n     * jQuery(element).on('click', _.debounce(sendMail, 300, {\n     *   'leading': true,\n     *   'trailing': false\n     * }));\n     *\n     * // Ensure `batchLog` is invoked once after 1 second of debounced calls.\n     * var debounced = _.debounce(batchLog, 250, { 'maxWait': 1000 });\n     * var source = new EventSource('/stream');\n     * jQuery(source).on('message', debounced);\n     *\n     * // Cancel the trailing debounced invocation.\n     * jQuery(window).on('popstate', debounced.cancel);\n     */\n    function debounce(func, wait, options) {\n      var lastArgs,\n          lastThis,\n          maxWait,\n          result,\n          timerId,\n          lastCallTime,\n          lastInvokeTime = 0,\n          leading = false,\n          maxing = false,\n          trailing = true;\n\n      if (typeof func != 'function') {\n        throw new TypeError(FUNC_ERROR_TEXT);\n      }\n      wait = toNumber(wait) || 0;\n      if (isObject(options)) {\n        leading = !!options.leading;\n        maxing = 'maxWait' in options;\n        maxWait = maxing ? nativeMax(toNumber(options.maxWait) || 0, wait) : maxWait;\n        trailing = 'trailing' in options ? !!options.trailing : trailing;\n      }\n\n      function invokeFunc(time) {\n        var args = lastArgs,\n            thisArg = lastThis;\n\n        lastArgs = lastThis = undefined;\n        lastInvokeTime = time;\n        result = func.apply(thisArg, args);\n        return result;\n      }\n\n      function leadingEdge(time) {\n        // Reset any `maxWait` timer.\n        lastInvokeTime = time;\n        // Start the timer for the trailing edge.\n        timerId = setTimeout(timerExpired, wait);\n        // Invoke the leading edge.\n        return leading ? invokeFunc(time) : result;\n      }\n\n      function remainingWait(time) {\n        var timeSinceLastCall = time - lastCallTime,\n            timeSinceLastInvoke = time - lastInvokeTime,\n            timeWaiting = wait - timeSinceLastCall;\n\n        return maxing\n          ? nativeMin(timeWaiting, maxWait - timeSinceLastInvoke)\n          : timeWaiting;\n      }\n\n      function shouldInvoke(time) {\n        var timeSinceLastCall = time - lastCallTime,\n            timeSinceLastInvoke = time - lastInvokeTime;\n\n        // Either this is the first call, activity has stopped and we're at the\n        // trailing edge, the system time has gone backwards and we're treating\n        // it as the trailing edge, or we've hit the `maxWait` limit.\n        return (lastCallTime === undefined || (timeSinceLastCall >= wait) ||\n          (timeSinceLastCall < 0) || (maxing && timeSinceLastInvoke >= maxWait));\n      }\n\n      function timerExpired() {\n        var time = now();\n        if (shouldInvoke(time)) {\n          return trailingEdge(time);\n        }\n        // Restart the timer.\n        timerId = setTimeout(timerExpired, remainingWait(time));\n      }\n\n      function trailingEdge(time) {\n        timerId = undefined;\n\n        // Only invoke if we have `lastArgs` which means `func` has been\n        // debounced at least once.\n        if (trailing && lastArgs) {\n          return invokeFunc(time);\n        }\n        lastArgs = lastThis = undefined;\n        return result;\n      }\n\n      function cancel() {\n        if (timerId !== undefined) {\n          clearTimeout(timerId);\n        }\n        lastInvokeTime = 0;\n        lastArgs = lastCallTime = lastThis = timerId = undefined;\n      }\n\n      function flush() {\n        return timerId === undefined ? result : trailingEdge(now());\n      }\n\n      function debounced() {\n        var time = now(),\n            isInvoking = shouldInvoke(time);\n\n        lastArgs = arguments;\n        lastThis = this;\n        lastCallTime = time;\n\n        if (isInvoking) {\n          if (timerId === undefined) {\n            return leadingEdge(lastCallTime);\n          }\n          if (maxing) {\n            // Handle invocations in a tight loop.\n            clearTimeout(timerId);\n            timerId = setTimeout(timerExpired, wait);\n            return invokeFunc(lastCallTime);\n          }\n        }\n        if (timerId === undefined) {\n          timerId = setTimeout(timerExpired, wait);\n        }\n        return result;\n      }\n      debounced.cancel = cancel;\n      debounced.flush = flush;\n      return debounced;\n    }\n\n    /**\n     * Defers invoking the `func` until the current call stack has cleared. Any\n     * additional arguments are provided to `func` when it's invoked.\n     *\n     * @static\n     * @memberOf _\n     * @since 0.1.0\n     * @category Function\n     * @param {Function} func The function to defer.\n     * @param {...*} [args] The arguments to invoke `func` with.\n     * @returns {number} Returns the timer id.\n     * @example\n     *\n     * _.defer(function(text) {\n     *   console.log(text);\n     * }, 'deferred');\n     * // => Logs 'deferred' after one millisecond.\n     */\n    var defer = baseRest(function(func, args) {\n      return baseDelay(func, 1, args);\n    });\n\n    /**\n     * Invokes `func` after `wait` milliseconds. Any additional arguments are\n     * provided to `func` when it's invoked.\n     *\n     * @static\n     * @memberOf _\n     * @since 0.1.0\n     * @category Function\n     * @param {Function} func The function to delay.\n     * @param {number} wait The number of milliseconds to delay invocation.\n     * @param {...*} [args] The arguments to invoke `func` with.\n     * @returns {number} Returns the timer id.\n     * @example\n     *\n     * _.delay(function(text) {\n     *   console.log(text);\n     * }, 1000, 'later');\n     * // => Logs 'later' after one second.\n     */\n    var delay = baseRest(function(func, wait, args) {\n      return baseDelay(func, toNumber(wait) || 0, args);\n    });\n\n    /**\n     * Creates a function that invokes `func` with arguments reversed.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Function\n     * @param {Function} func The function to flip arguments for.\n     * @returns {Function} Returns the new flipped function.\n     * @example\n     *\n     * var flipped = _.flip(function() {\n     *   return _.toArray(arguments);\n     * });\n     *\n     * flipped('a', 'b', 'c', 'd');\n     * // => ['d', 'c', 'b', 'a']\n     */\n    function flip(func) {\n      return createWrap(func, WRAP_FLIP_FLAG);\n    }\n\n    /**\n     * Creates a function that memoizes the result of `func`. If `resolver` is\n     * provided, it determines the cache key for storing the result based on the\n     * arguments provided to the memoized function. By default, the first argument\n     * provided to the memoized function is used as the map cache key. The `func`\n     * is invoked with the `this` binding of the memoized function.\n     *\n     * **Note:** The cache is exposed as the `cache` property on the memoized\n     * function. Its creation may be customized by replacing the `_.memoize.Cache`\n     * constructor with one whose instances implement the\n     * [`Map`](http://ecma-international.org/ecma-262/7.0/#sec-properties-of-the-map-prototype-object)\n     * method interface of `clear`, `delete`, `get`, `has`, and `set`.\n     *\n     * @static\n     * @memberOf _\n     * @since 0.1.0\n     * @category Function\n     * @param {Function} func The function to have its output memoized.\n     * @param {Function} [resolver] The function to resolve the cache key.\n     * @returns {Function} Returns the new memoized function.\n     * @example\n     *\n     * var object = { 'a': 1, 'b': 2 };\n     * var other = { 'c': 3, 'd': 4 };\n     *\n     * var values = _.memoize(_.values);\n     * values(object);\n     * // => [1, 2]\n     *\n     * values(other);\n     * // => [3, 4]\n     *\n     * object.a = 2;\n     * values(object);\n     * // => [1, 2]\n     *\n     * // Modify the result cache.\n     * values.cache.set(object, ['a', 'b']);\n     * values(object);\n     * // => ['a', 'b']\n     *\n     * // Replace `_.memoize.Cache`.\n     * _.memoize.Cache = WeakMap;\n     */\n    function memoize(func, resolver) {\n      if (typeof func != 'function' || (resolver != null && typeof resolver != 'function')) {\n        throw new TypeError(FUNC_ERROR_TEXT);\n      }\n      var memoized = function() {\n        var args = arguments,\n            key = resolver ? resolver.apply(this, args) : args[0],\n            cache = memoized.cache;\n\n        if (cache.has(key)) {\n          return cache.get(key);\n        }\n        var result = func.apply(this, args);\n        memoized.cache = cache.set(key, result) || cache;\n        return result;\n      };\n      memoized.cache = new (memoize.Cache || MapCache);\n      return memoized;\n    }\n\n    // Expose `MapCache`.\n    memoize.Cache = MapCache;\n\n    /**\n     * Creates a function that negates the result of the predicate `func`. The\n     * `func` predicate is invoked with the `this` binding and arguments of the\n     * created function.\n     *\n     * @static\n     * @memberOf _\n     * @since 3.0.0\n     * @category Function\n     * @param {Function} predicate The predicate to negate.\n     * @returns {Function} Returns the new negated function.\n     * @example\n     *\n     * function isEven(n) {\n     *   return n % 2 == 0;\n     * }\n     *\n     * _.filter([1, 2, 3, 4, 5, 6], _.negate(isEven));\n     * // => [1, 3, 5]\n     */\n    function negate(predicate) {\n      if (typeof predicate != 'function') {\n        throw new TypeError(FUNC_ERROR_TEXT);\n      }\n      return function() {\n        var args = arguments;\n        switch (args.length) {\n          case 0: return !predicate.call(this);\n          case 1: return !predicate.call(this, args[0]);\n          case 2: return !predicate.call(this, args[0], args[1]);\n          case 3: return !predicate.call(this, args[0], args[1], args[2]);\n        }\n        return !predicate.apply(this, args);\n      };\n    }\n\n    /**\n     * Creates a function that is restricted to invoking `func` once. Repeat calls\n     * to the function return the value of the first invocation. The `func` is\n     * invoked with the `this` binding and arguments of the created function.\n     *\n     * @static\n     * @memberOf _\n     * @since 0.1.0\n     * @category Function\n     * @param {Function} func The function to restrict.\n     * @returns {Function} Returns the new restricted function.\n     * @example\n     *\n     * var initialize = _.once(createApplication);\n     * initialize();\n     * initialize();\n     * // => `createApplication` is invoked once\n     */\n    function once(func) {\n      return before(2, func);\n    }\n\n    /**\n     * Creates a function that invokes `func` with its arguments transformed.\n     *\n     * @static\n     * @since 4.0.0\n     * @memberOf _\n     * @category Function\n     * @param {Function} func The function to wrap.\n     * @param {...(Function|Function[])} [transforms=[_.identity]]\n     *  The argument transforms.\n     * @returns {Function} Returns the new function.\n     * @example\n     *\n     * function doubled(n) {\n     *   return n * 2;\n     * }\n     *\n     * function square(n) {\n     *   return n * n;\n     * }\n     *\n     * var func = _.overArgs(function(x, y) {\n     *   return [x, y];\n     * }, [square, doubled]);\n     *\n     * func(9, 3);\n     * // => [81, 6]\n     *\n     * func(10, 5);\n     * // => [100, 10]\n     */\n    var overArgs = castRest(function(func, transforms) {\n      transforms = (transforms.length == 1 && isArray(transforms[0]))\n        ? arrayMap(transforms[0], baseUnary(getIteratee()))\n        : arrayMap(baseFlatten(transforms, 1), baseUnary(getIteratee()));\n\n      var funcsLength = transforms.length;\n      return baseRest(function(args) {\n        var index = -1,\n            length = nativeMin(args.length, funcsLength);\n\n        while (++index < length) {\n          args[index] = transforms[index].call(this, args[index]);\n        }\n        return apply(func, this, args);\n      });\n    });\n\n    /**\n     * Creates a function that invokes `func` with `partials` prepended to the\n     * arguments it receives. This method is like `_.bind` except it does **not**\n     * alter the `this` binding.\n     *\n     * The `_.partial.placeholder` value, which defaults to `_` in monolithic\n     * builds, may be used as a placeholder for partially applied arguments.\n     *\n     * **Note:** This method doesn't set the \"length\" property of partially\n     * applied functions.\n     *\n     * @static\n     * @memberOf _\n     * @since 0.2.0\n     * @category Function\n     * @param {Function} func The function to partially apply arguments to.\n     * @param {...*} [partials] The arguments to be partially applied.\n     * @returns {Function} Returns the new partially applied function.\n     * @example\n     *\n     * function greet(greeting, name) {\n     *   return greeting + ' ' + name;\n     * }\n     *\n     * var sayHelloTo = _.partial(greet, 'hello');\n     * sayHelloTo('fred');\n     * // => 'hello fred'\n     *\n     * // Partially applied with placeholders.\n     * var greetFred = _.partial(greet, _, 'fred');\n     * greetFred('hi');\n     * // => 'hi fred'\n     */\n    var partial = baseRest(function(func, partials) {\n      var holders = replaceHolders(partials, getHolder(partial));\n      return createWrap(func, WRAP_PARTIAL_FLAG, undefined, partials, holders);\n    });\n\n    /**\n     * This method is like `_.partial` except that partially applied arguments\n     * are appended to the arguments it receives.\n     *\n     * The `_.partialRight.placeholder` value, which defaults to `_` in monolithic\n     * builds, may be used as a placeholder for partially applied arguments.\n     *\n     * **Note:** This method doesn't set the \"length\" property of partially\n     * applied functions.\n     *\n     * @static\n     * @memberOf _\n     * @since 1.0.0\n     * @category Function\n     * @param {Function} func The function to partially apply arguments to.\n     * @param {...*} [partials] The arguments to be partially applied.\n     * @returns {Function} Returns the new partially applied function.\n     * @example\n     *\n     * function greet(greeting, name) {\n     *   return greeting + ' ' + name;\n     * }\n     *\n     * var greetFred = _.partialRight(greet, 'fred');\n     * greetFred('hi');\n     * // => 'hi fred'\n     *\n     * // Partially applied with placeholders.\n     * var sayHelloTo = _.partialRight(greet, 'hello', _);\n     * sayHelloTo('fred');\n     * // => 'hello fred'\n     */\n    var partialRight = baseRest(function(func, partials) {\n      var holders = replaceHolders(partials, getHolder(partialRight));\n      return createWrap(func, WRAP_PARTIAL_RIGHT_FLAG, undefined, partials, holders);\n    });\n\n    /**\n     * Creates a function that invokes `func` with arguments arranged according\n     * to the specified `indexes` where the argument value at the first index is\n     * provided as the first argument, the argument value at the second index is\n     * provided as the second argument, and so on.\n     *\n     * @static\n     * @memberOf _\n     * @since 3.0.0\n     * @category Function\n     * @param {Function} func The function to rearrange arguments for.\n     * @param {...(number|number[])} indexes The arranged argument indexes.\n     * @returns {Function} Returns the new function.\n     * @example\n     *\n     * var rearged = _.rearg(function(a, b, c) {\n     *   return [a, b, c];\n     * }, [2, 0, 1]);\n     *\n     * rearged('b', 'c', 'a')\n     * // => ['a', 'b', 'c']\n     */\n    var rearg = flatRest(function(func, indexes) {\n      return createWrap(func, WRAP_REARG_FLAG, undefined, undefined, undefined, indexes);\n    });\n\n    /**\n     * Creates a function that invokes `func` with the `this` binding of the\n     * created function and arguments from `start` and beyond provided as\n     * an array.\n     *\n     * **Note:** This method is based on the\n     * [rest parameter](https://mdn.io/rest_parameters).\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Function\n     * @param {Function} func The function to apply a rest parameter to.\n     * @param {number} [start=func.length-1] The start position of the rest parameter.\n     * @returns {Function} Returns the new function.\n     * @example\n     *\n     * var say = _.rest(function(what, names) {\n     *   return what + ' ' + _.initial(names).join(', ') +\n     *     (_.size(names) > 1 ? ', & ' : '') + _.last(names);\n     * });\n     *\n     * say('hello', 'fred', 'barney', 'pebbles');\n     * // => 'hello fred, barney, & pebbles'\n     */\n    function rest(func, start) {\n      if (typeof func != 'function') {\n        throw new TypeError(FUNC_ERROR_TEXT);\n      }\n      start = start === undefined ? start : toInteger(start);\n      return baseRest(func, start);\n    }\n\n    /**\n     * Creates a function that invokes `func` with the `this` binding of the\n     * create function and an array of arguments much like\n     * [`Function#apply`](http://www.ecma-international.org/ecma-262/7.0/#sec-function.prototype.apply).\n     *\n     * **Note:** This method is based on the\n     * [spread operator](https://mdn.io/spread_operator).\n     *\n     * @static\n     * @memberOf _\n     * @since 3.2.0\n     * @category Function\n     * @param {Function} func The function to spread arguments over.\n     * @param {number} [start=0] The start position of the spread.\n     * @returns {Function} Returns the new function.\n     * @example\n     *\n     * var say = _.spread(function(who, what) {\n     *   return who + ' says ' + what;\n     * });\n     *\n     * say(['fred', 'hello']);\n     * // => 'fred says hello'\n     *\n     * var numbers = Promise.all([\n     *   Promise.resolve(40),\n     *   Promise.resolve(36)\n     * ]);\n     *\n     * numbers.then(_.spread(function(x, y) {\n     *   return x + y;\n     * }));\n     * // => a Promise of 76\n     */\n    function spread(func, start) {\n      if (typeof func != 'function') {\n        throw new TypeError(FUNC_ERROR_TEXT);\n      }\n      start = start == null ? 0 : nativeMax(toInteger(start), 0);\n      return baseRest(function(args) {\n        var array = args[start],\n            otherArgs = castSlice(args, 0, start);\n\n        if (array) {\n          arrayPush(otherArgs, array);\n        }\n        return apply(func, this, otherArgs);\n      });\n    }\n\n    /**\n     * Creates a throttled function that only invokes `func` at most once per\n     * every `wait` milliseconds. The throttled function comes with a `cancel`\n     * method to cancel delayed `func` invocations and a `flush` method to\n     * immediately invoke them. Provide `options` to indicate whether `func`\n     * should be invoked on the leading and/or trailing edge of the `wait`\n     * timeout. The `func` is invoked with the last arguments provided to the\n     * throttled function. Subsequent calls to the throttled function return the\n     * result of the last `func` invocation.\n     *\n     * **Note:** If `leading` and `trailing` options are `true`, `func` is\n     * invoked on the trailing edge of the timeout only if the throttled function\n     * is invoked more than once during the `wait` timeout.\n     *\n     * If `wait` is `0` and `leading` is `false`, `func` invocation is deferred\n     * until to the next tick, similar to `setTimeout` with a timeout of `0`.\n     *\n     * See [David Corbacho's article](https://css-tricks.com/debouncing-throttling-explained-examples/)\n     * for details over the differences between `_.throttle` and `_.debounce`.\n     *\n     * @static\n     * @memberOf _\n     * @since 0.1.0\n     * @category Function\n     * @param {Function} func The function to throttle.\n     * @param {number} [wait=0] The number of milliseconds to throttle invocations to.\n     * @param {Object} [options={}] The options object.\n     * @param {boolean} [options.leading=true]\n     *  Specify invoking on the leading edge of the timeout.\n     * @param {boolean} [options.trailing=true]\n     *  Specify invoking on the trailing edge of the timeout.\n     * @returns {Function} Returns the new throttled function.\n     * @example\n     *\n     * // Avoid excessively updating the position while scrolling.\n     * jQuery(window).on('scroll', _.throttle(updatePosition, 100));\n     *\n     * // Invoke `renewToken` when the click event is fired, but not more than once every 5 minutes.\n     * var throttled = _.throttle(renewToken, 300000, { 'trailing': false });\n     * jQuery(element).on('click', throttled);\n     *\n     * // Cancel the trailing throttled invocation.\n     * jQuery(window).on('popstate', throttled.cancel);\n     */\n    function throttle(func, wait, options) {\n      var leading = true,\n          trailing = true;\n\n      if (typeof func != 'function') {\n        throw new TypeError(FUNC_ERROR_TEXT);\n      }\n      if (isObject(options)) {\n        leading = 'leading' in options ? !!options.leading : leading;\n        trailing = 'trailing' in options ? !!options.trailing : trailing;\n      }\n      return debounce(func, wait, {\n        'leading': leading,\n        'maxWait': wait,\n        'trailing': trailing\n      });\n    }\n\n    /**\n     * Creates a function that accepts up to one argument, ignoring any\n     * additional arguments.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Function\n     * @param {Function} func The function to cap arguments for.\n     * @returns {Function} Returns the new capped function.\n     * @example\n     *\n     * _.map(['6', '8', '10'], _.unary(parseInt));\n     * // => [6, 8, 10]\n     */\n    function unary(func) {\n      return ary(func, 1);\n    }\n\n    /**\n     * Creates a function that provides `value` to `wrapper` as its first\n     * argument. Any additional arguments provided to the function are appended\n     * to those provided to the `wrapper`. The wrapper is invoked with the `this`\n     * binding of the created function.\n     *\n     * @static\n     * @memberOf _\n     * @since 0.1.0\n     * @category Function\n     * @param {*} value The value to wrap.\n     * @param {Function} [wrapper=identity] The wrapper function.\n     * @returns {Function} Returns the new function.\n     * @example\n     *\n     * var p = _.wrap(_.escape, function(func, text) {\n     *   return '<p>' + func(text) + '</p>';\n     * });\n     *\n     * p('fred, barney, & pebbles');\n     * // => '<p>fred, barney, &amp; pebbles</p>'\n     */\n    function wrap(value, wrapper) {\n      return partial(castFunction(wrapper), value);\n    }\n\n    /*------------------------------------------------------------------------*/\n\n    /**\n     * Casts `value` as an array if it's not one.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.4.0\n     * @category Lang\n     * @param {*} value The value to inspect.\n     * @returns {Array} Returns the cast array.\n     * @example\n     *\n     * _.castArray(1);\n     * // => [1]\n     *\n     * _.castArray({ 'a': 1 });\n     * // => [{ 'a': 1 }]\n     *\n     * _.castArray('abc');\n     * // => ['abc']\n     *\n     * _.castArray(null);\n     * // => [null]\n     *\n     * _.castArray(undefined);\n     * // => [undefined]\n     *\n     * _.castArray();\n     * // => []\n     *\n     * var array = [1, 2, 3];\n     * console.log(_.castArray(array) === array);\n     * // => true\n     */\n    function castArray() {\n      if (!arguments.length) {\n        return [];\n      }\n      var value = arguments[0];\n      return isArray(value) ? value : [value];\n    }\n\n    /**\n     * Creates a shallow clone of `value`.\n     *\n     * **Note:** This method is loosely based on the\n     * [structured clone algorithm](https://mdn.io/Structured_clone_algorithm)\n     * and supports cloning arrays, array buffers, booleans, date objects, maps,\n     * numbers, `Object` objects, regexes, sets, strings, symbols, and typed\n     * arrays. The own enumerable properties of `arguments` objects are cloned\n     * as plain objects. An empty object is returned for uncloneable values such\n     * as error objects, functions, DOM nodes, and WeakMaps.\n     *\n     * @static\n     * @memberOf _\n     * @since 0.1.0\n     * @category Lang\n     * @param {*} value The value to clone.\n     * @returns {*} Returns the cloned value.\n     * @see _.cloneDeep\n     * @example\n     *\n     * var objects = [{ 'a': 1 }, { 'b': 2 }];\n     *\n     * var shallow = _.clone(objects);\n     * console.log(shallow[0] === objects[0]);\n     * // => true\n     */\n    function clone(value) {\n      return baseClone(value, CLONE_SYMBOLS_FLAG);\n    }\n\n    /**\n     * This method is like `_.clone` except that it accepts `customizer` which\n     * is invoked to produce the cloned value. If `customizer` returns `undefined`,\n     * cloning is handled by the method instead. The `customizer` is invoked with\n     * up to four arguments; (value [, index|key, object, stack]).\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Lang\n     * @param {*} value The value to clone.\n     * @param {Function} [customizer] The function to customize cloning.\n     * @returns {*} Returns the cloned value.\n     * @see _.cloneDeepWith\n     * @example\n     *\n     * function customizer(value) {\n     *   if (_.isElement(value)) {\n     *     return value.cloneNode(false);\n     *   }\n     * }\n     *\n     * var el = _.cloneWith(document.body, customizer);\n     *\n     * console.log(el === document.body);\n     * // => false\n     * console.log(el.nodeName);\n     * // => 'BODY'\n     * console.log(el.childNodes.length);\n     * // => 0\n     */\n    function cloneWith(value, customizer) {\n      customizer = typeof customizer == 'function' ? customizer : undefined;\n      return baseClone(value, CLONE_SYMBOLS_FLAG, customizer);\n    }\n\n    /**\n     * This method is like `_.clone` except that it recursively clones `value`.\n     *\n     * @static\n     * @memberOf _\n     * @since 1.0.0\n     * @category Lang\n     * @param {*} value The value to recursively clone.\n     * @returns {*} Returns the deep cloned value.\n     * @see _.clone\n     * @example\n     *\n     * var objects = [{ 'a': 1 }, { 'b': 2 }];\n     *\n     * var deep = _.cloneDeep(objects);\n     * console.log(deep[0] === objects[0]);\n     * // => false\n     */\n    function cloneDeep(value) {\n      return baseClone(value, CLONE_DEEP_FLAG | CLONE_SYMBOLS_FLAG);\n    }\n\n    /**\n     * This method is like `_.cloneWith` except that it recursively clones `value`.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Lang\n     * @param {*} value The value to recursively clone.\n     * @param {Function} [customizer] The function to customize cloning.\n     * @returns {*} Returns the deep cloned value.\n     * @see _.cloneWith\n     * @example\n     *\n     * function customizer(value) {\n     *   if (_.isElement(value)) {\n     *     return value.cloneNode(true);\n     *   }\n     * }\n     *\n     * var el = _.cloneDeepWith(document.body, customizer);\n     *\n     * console.log(el === document.body);\n     * // => false\n     * console.log(el.nodeName);\n     * // => 'BODY'\n     * console.log(el.childNodes.length);\n     * // => 20\n     */\n    function cloneDeepWith(value, customizer) {\n      customizer = typeof customizer == 'function' ? customizer : undefined;\n      return baseClone(value, CLONE_DEEP_FLAG | CLONE_SYMBOLS_FLAG, customizer);\n    }\n\n    /**\n     * Checks if `object` conforms to `source` by invoking the predicate\n     * properties of `source` with the corresponding property values of `object`.\n     *\n     * **Note:** This method is equivalent to `_.conforms` when `source` is\n     * partially applied.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.14.0\n     * @category Lang\n     * @param {Object} object The object to inspect.\n     * @param {Object} source The object of property predicates to conform to.\n     * @returns {boolean} Returns `true` if `object` conforms, else `false`.\n     * @example\n     *\n     * var object = { 'a': 1, 'b': 2 };\n     *\n     * _.conformsTo(object, { 'b': function(n) { return n > 1; } });\n     * // => true\n     *\n     * _.conformsTo(object, { 'b': function(n) { return n > 2; } });\n     * // => false\n     */\n    function conformsTo(object, source) {\n      return source == null || baseConformsTo(object, source, keys(source));\n    }\n\n    /**\n     * Performs a\n     * [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)\n     * comparison between two values to determine if they are equivalent.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Lang\n     * @param {*} value The value to compare.\n     * @param {*} other The other value to compare.\n     * @returns {boolean} Returns `true` if the values are equivalent, else `false`.\n     * @example\n     *\n     * var object = { 'a': 1 };\n     * var other = { 'a': 1 };\n     *\n     * _.eq(object, object);\n     * // => true\n     *\n     * _.eq(object, other);\n     * // => false\n     *\n     * _.eq('a', 'a');\n     * // => true\n     *\n     * _.eq('a', Object('a'));\n     * // => false\n     *\n     * _.eq(NaN, NaN);\n     * // => true\n     */\n    function eq(value, other) {\n      return value === other || (value !== value && other !== other);\n    }\n\n    /**\n     * Checks if `value` is greater than `other`.\n     *\n     * @static\n     * @memberOf _\n     * @since 3.9.0\n     * @category Lang\n     * @param {*} value The value to compare.\n     * @param {*} other The other value to compare.\n     * @returns {boolean} Returns `true` if `value` is greater than `other`,\n     *  else `false`.\n     * @see _.lt\n     * @example\n     *\n     * _.gt(3, 1);\n     * // => true\n     *\n     * _.gt(3, 3);\n     * // => false\n     *\n     * _.gt(1, 3);\n     * // => false\n     */\n    var gt = createRelationalOperation(baseGt);\n\n    /**\n     * Checks if `value` is greater than or equal to `other`.\n     *\n     * @static\n     * @memberOf _\n     * @since 3.9.0\n     * @category Lang\n     * @param {*} value The value to compare.\n     * @param {*} other The other value to compare.\n     * @returns {boolean} Returns `true` if `value` is greater than or equal to\n     *  `other`, else `false`.\n     * @see _.lte\n     * @example\n     *\n     * _.gte(3, 1);\n     * // => true\n     *\n     * _.gte(3, 3);\n     * // => true\n     *\n     * _.gte(1, 3);\n     * // => false\n     */\n    var gte = createRelationalOperation(function(value, other) {\n      return value >= other;\n    });\n\n    /**\n     * Checks if `value` is likely an `arguments` object.\n     *\n     * @static\n     * @memberOf _\n     * @since 0.1.0\n     * @category Lang\n     * @param {*} value The value to check.\n     * @returns {boolean} Returns `true` if `value` is an `arguments` object,\n     *  else `false`.\n     * @example\n     *\n     * _.isArguments(function() { return arguments; }());\n     * // => true\n     *\n     * _.isArguments([1, 2, 3]);\n     * // => false\n     */\n    var isArguments = baseIsArguments(function() { return arguments; }()) ? baseIsArguments : function(value) {\n      return isObjectLike(value) && hasOwnProperty.call(value, 'callee') &&\n        !propertyIsEnumerable.call(value, 'callee');\n    };\n\n    /**\n     * Checks if `value` is classified as an `Array` object.\n     *\n     * @static\n     * @memberOf _\n     * @since 0.1.0\n     * @category Lang\n     * @param {*} value The value to check.\n     * @returns {boolean} Returns `true` if `value` is an array, else `false`.\n     * @example\n     *\n     * _.isArray([1, 2, 3]);\n     * // => true\n     *\n     * _.isArray(document.body.children);\n     * // => false\n     *\n     * _.isArray('abc');\n     * // => false\n     *\n     * _.isArray(_.noop);\n     * // => false\n     */\n    var isArray = Array.isArray;\n\n    /**\n     * Checks if `value` is classified as an `ArrayBuffer` object.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.3.0\n     * @category Lang\n     * @param {*} value The value to check.\n     * @returns {boolean} Returns `true` if `value` is an array buffer, else `false`.\n     * @example\n     *\n     * _.isArrayBuffer(new ArrayBuffer(2));\n     * // => true\n     *\n     * _.isArrayBuffer(new Array(2));\n     * // => false\n     */\n    var isArrayBuffer = nodeIsArrayBuffer ? baseUnary(nodeIsArrayBuffer) : baseIsArrayBuffer;\n\n    /**\n     * Checks if `value` is array-like. A value is considered array-like if it's\n     * not a function and has a `value.length` that's an integer greater than or\n     * equal to `0` and less than or equal to `Number.MAX_SAFE_INTEGER`.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Lang\n     * @param {*} value The value to check.\n     * @returns {boolean} Returns `true` if `value` is array-like, else `false`.\n     * @example\n     *\n     * _.isArrayLike([1, 2, 3]);\n     * // => true\n     *\n     * _.isArrayLike(document.body.children);\n     * // => true\n     *\n     * _.isArrayLike('abc');\n     * // => true\n     *\n     * _.isArrayLike(_.noop);\n     * // => false\n     */\n    function isArrayLike(value) {\n      return value != null && isLength(value.length) && !isFunction(value);\n    }\n\n    /**\n     * This method is like `_.isArrayLike` except that it also checks if `value`\n     * is an object.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Lang\n     * @param {*} value The value to check.\n     * @returns {boolean} Returns `true` if `value` is an array-like object,\n     *  else `false`.\n     * @example\n     *\n     * _.isArrayLikeObject([1, 2, 3]);\n     * // => true\n     *\n     * _.isArrayLikeObject(document.body.children);\n     * // => true\n     *\n     * _.isArrayLikeObject('abc');\n     * // => false\n     *\n     * _.isArrayLikeObject(_.noop);\n     * // => false\n     */\n    function isArrayLikeObject(value) {\n      return isObjectLike(value) && isArrayLike(value);\n    }\n\n    /**\n     * Checks if `value` is classified as a boolean primitive or object.\n     *\n     * @static\n     * @memberOf _\n     * @since 0.1.0\n     * @category Lang\n     * @param {*} value The value to check.\n     * @returns {boolean} Returns `true` if `value` is a boolean, else `false`.\n     * @example\n     *\n     * _.isBoolean(false);\n     * // => true\n     *\n     * _.isBoolean(null);\n     * // => false\n     */\n    function isBoolean(value) {\n      return value === true || value === false ||\n        (isObjectLike(value) && baseGetTag(value) == boolTag);\n    }\n\n    /**\n     * Checks if `value` is a buffer.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.3.0\n     * @category Lang\n     * @param {*} value The value to check.\n     * @returns {boolean} Returns `true` if `value` is a buffer, else `false`.\n     * @example\n     *\n     * _.isBuffer(new Buffer(2));\n     * // => true\n     *\n     * _.isBuffer(new Uint8Array(2));\n     * // => false\n     */\n    var isBuffer = nativeIsBuffer || stubFalse;\n\n    /**\n     * Checks if `value` is classified as a `Date` object.\n     *\n     * @static\n     * @memberOf _\n     * @since 0.1.0\n     * @category Lang\n     * @param {*} value The value to check.\n     * @returns {boolean} Returns `true` if `value` is a date object, else `false`.\n     * @example\n     *\n     * _.isDate(new Date);\n     * // => true\n     *\n     * _.isDate('Mon April 23 2012');\n     * // => false\n     */\n    var isDate = nodeIsDate ? baseUnary(nodeIsDate) : baseIsDate;\n\n    /**\n     * Checks if `value` is likely a DOM element.\n     *\n     * @static\n     * @memberOf _\n     * @since 0.1.0\n     * @category Lang\n     * @param {*} value The value to check.\n     * @returns {boolean} Returns `true` if `value` is a DOM element, else `false`.\n     * @example\n     *\n     * _.isElement(document.body);\n     * // => true\n     *\n     * _.isElement('<body>');\n     * // => false\n     */\n    function isElement(value) {\n      return isObjectLike(value) && value.nodeType === 1 && !isPlainObject(value);\n    }\n\n    /**\n     * Checks if `value` is an empty object, collection, map, or set.\n     *\n     * Objects are considered empty if they have no own enumerable string keyed\n     * properties.\n     *\n     * Array-like values such as `arguments` objects, arrays, buffers, strings, or\n     * jQuery-like collections are considered empty if they have a `length` of `0`.\n     * Similarly, maps and sets are considered empty if they have a `size` of `0`.\n     *\n     * @static\n     * @memberOf _\n     * @since 0.1.0\n     * @category Lang\n     * @param {*} value The value to check.\n     * @returns {boolean} Returns `true` if `value` is empty, else `false`.\n     * @example\n     *\n     * _.isEmpty(null);\n     * // => true\n     *\n     * _.isEmpty(true);\n     * // => true\n     *\n     * _.isEmpty(1);\n     * // => true\n     *\n     * _.isEmpty([1, 2, 3]);\n     * // => false\n     *\n     * _.isEmpty({ 'a': 1 });\n     * // => false\n     */\n    function isEmpty(value) {\n      if (value == null) {\n        return true;\n      }\n      if (isArrayLike(value) &&\n          (isArray(value) || typeof value == 'string' || typeof value.splice == 'function' ||\n            isBuffer(value) || isTypedArray(value) || isArguments(value))) {\n        return !value.length;\n      }\n      var tag = getTag(value);\n      if (tag == mapTag || tag == setTag) {\n        return !value.size;\n      }\n      if (isPrototype(value)) {\n        return !baseKeys(value).length;\n      }\n      for (var key in value) {\n        if (hasOwnProperty.call(value, key)) {\n          return false;\n        }\n      }\n      return true;\n    }\n\n    /**\n     * Performs a deep comparison between two values to determine if they are\n     * equivalent.\n     *\n     * **Note:** This method supports comparing arrays, array buffers, booleans,\n     * date objects, error objects, maps, numbers, `Object` objects, regexes,\n     * sets, strings, symbols, and typed arrays. `Object` objects are compared\n     * by their own, not inherited, enumerable properties. Functions and DOM\n     * nodes are compared by strict equality, i.e. `===`.\n     *\n     * @static\n     * @memberOf _\n     * @since 0.1.0\n     * @category Lang\n     * @param {*} value The value to compare.\n     * @param {*} other The other value to compare.\n     * @returns {boolean} Returns `true` if the values are equivalent, else `false`.\n     * @example\n     *\n     * var object = { 'a': 1 };\n     * var other = { 'a': 1 };\n     *\n     * _.isEqual(object, other);\n     * // => true\n     *\n     * object === other;\n     * // => false\n     */\n    function isEqual(value, other) {\n      return baseIsEqual(value, other);\n    }\n\n    /**\n     * This method is like `_.isEqual` except that it accepts `customizer` which\n     * is invoked to compare values. If `customizer` returns `undefined`, comparisons\n     * are handled by the method instead. The `customizer` is invoked with up to\n     * six arguments: (objValue, othValue [, index|key, object, other, stack]).\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Lang\n     * @param {*} value The value to compare.\n     * @param {*} other The other value to compare.\n     * @param {Function} [customizer] The function to customize comparisons.\n     * @returns {boolean} Returns `true` if the values are equivalent, else `false`.\n     * @example\n     *\n     * function isGreeting(value) {\n     *   return /^h(?:i|ello)$/.test(value);\n     * }\n     *\n     * function customizer(objValue, othValue) {\n     *   if (isGreeting(objValue) && isGreeting(othValue)) {\n     *     return true;\n     *   }\n     * }\n     *\n     * var array = ['hello', 'goodbye'];\n     * var other = ['hi', 'goodbye'];\n     *\n     * _.isEqualWith(array, other, customizer);\n     * // => true\n     */\n    function isEqualWith(value, other, customizer) {\n      customizer = typeof customizer == 'function' ? customizer : undefined;\n      var result = customizer ? customizer(value, other) : undefined;\n      return result === undefined ? baseIsEqual(value, other, undefined, customizer) : !!result;\n    }\n\n    /**\n     * Checks if `value` is an `Error`, `EvalError`, `RangeError`, `ReferenceError`,\n     * `SyntaxError`, `TypeError`, or `URIError` object.\n     *\n     * @static\n     * @memberOf _\n     * @since 3.0.0\n     * @category Lang\n     * @param {*} value The value to check.\n     * @returns {boolean} Returns `true` if `value` is an error object, else `false`.\n     * @example\n     *\n     * _.isError(new Error);\n     * // => true\n     *\n     * _.isError(Error);\n     * // => false\n     */\n    function isError(value) {\n      if (!isObjectLike(value)) {\n        return false;\n      }\n      var tag = baseGetTag(value);\n      return tag == errorTag || tag == domExcTag ||\n        (typeof value.message == 'string' && typeof value.name == 'string' && !isPlainObject(value));\n    }\n\n    /**\n     * Checks if `value` is a finite primitive number.\n     *\n     * **Note:** This method is based on\n     * [`Number.isFinite`](https://mdn.io/Number/isFinite).\n     *\n     * @static\n     * @memberOf _\n     * @since 0.1.0\n     * @category Lang\n     * @param {*} value The value to check.\n     * @returns {boolean} Returns `true` if `value` is a finite number, else `false`.\n     * @example\n     *\n     * _.isFinite(3);\n     * // => true\n     *\n     * _.isFinite(Number.MIN_VALUE);\n     * // => true\n     *\n     * _.isFinite(Infinity);\n     * // => false\n     *\n     * _.isFinite('3');\n     * // => false\n     */\n    function isFinite(value) {\n      return typeof value == 'number' && nativeIsFinite(value);\n    }\n\n    /**\n     * Checks if `value` is classified as a `Function` object.\n     *\n     * @static\n     * @memberOf _\n     * @since 0.1.0\n     * @category Lang\n     * @param {*} value The value to check.\n     * @returns {boolean} Returns `true` if `value` is a function, else `false`.\n     * @example\n     *\n     * _.isFunction(_);\n     * // => true\n     *\n     * _.isFunction(/abc/);\n     * // => false\n     */\n    function isFunction(value) {\n      if (!isObject(value)) {\n        return false;\n      }\n      // The use of `Object#toString` avoids issues with the `typeof` operator\n      // in Safari 9 which returns 'object' for typed arrays and other constructors.\n      var tag = baseGetTag(value);\n      return tag == funcTag || tag == genTag || tag == asyncTag || tag == proxyTag;\n    }\n\n    /**\n     * Checks if `value` is an integer.\n     *\n     * **Note:** This method is based on\n     * [`Number.isInteger`](https://mdn.io/Number/isInteger).\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Lang\n     * @param {*} value The value to check.\n     * @returns {boolean} Returns `true` if `value` is an integer, else `false`.\n     * @example\n     *\n     * _.isInteger(3);\n     * // => true\n     *\n     * _.isInteger(Number.MIN_VALUE);\n     * // => false\n     *\n     * _.isInteger(Infinity);\n     * // => false\n     *\n     * _.isInteger('3');\n     * // => false\n     */\n    function isInteger(value) {\n      return typeof value == 'number' && value == toInteger(value);\n    }\n\n    /**\n     * Checks if `value` is a valid array-like length.\n     *\n     * **Note:** This method is loosely based on\n     * [`ToLength`](http://ecma-international.org/ecma-262/7.0/#sec-tolength).\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Lang\n     * @param {*} value The value to check.\n     * @returns {boolean} Returns `true` if `value` is a valid length, else `false`.\n     * @example\n     *\n     * _.isLength(3);\n     * // => true\n     *\n     * _.isLength(Number.MIN_VALUE);\n     * // => false\n     *\n     * _.isLength(Infinity);\n     * // => false\n     *\n     * _.isLength('3');\n     * // => false\n     */\n    function isLength(value) {\n      return typeof value == 'number' &&\n        value > -1 && value % 1 == 0 && value <= MAX_SAFE_INTEGER;\n    }\n\n    /**\n     * Checks if `value` is the\n     * [language type](http://www.ecma-international.org/ecma-262/7.0/#sec-ecmascript-language-types)\n     * of `Object`. (e.g. arrays, functions, objects, regexes, `new Number(0)`, and `new String('')`)\n     *\n     * @static\n     * @memberOf _\n     * @since 0.1.0\n     * @category Lang\n     * @param {*} value The value to check.\n     * @returns {boolean} Returns `true` if `value` is an object, else `false`.\n     * @example\n     *\n     * _.isObject({});\n     * // => true\n     *\n     * _.isObject([1, 2, 3]);\n     * // => true\n     *\n     * _.isObject(_.noop);\n     * // => true\n     *\n     * _.isObject(null);\n     * // => false\n     */\n    function isObject(value) {\n      var type = typeof value;\n      return value != null && (type == 'object' || type == 'function');\n    }\n\n    /**\n     * Checks if `value` is object-like. A value is object-like if it's not `null`\n     * and has a `typeof` result of \"object\".\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Lang\n     * @param {*} value The value to check.\n     * @returns {boolean} Returns `true` if `value` is object-like, else `false`.\n     * @example\n     *\n     * _.isObjectLike({});\n     * // => true\n     *\n     * _.isObjectLike([1, 2, 3]);\n     * // => true\n     *\n     * _.isObjectLike(_.noop);\n     * // => false\n     *\n     * _.isObjectLike(null);\n     * // => false\n     */\n    function isObjectLike(value) {\n      return value != null && typeof value == 'object';\n    }\n\n    /**\n     * Checks if `value` is classified as a `Map` object.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.3.0\n     * @category Lang\n     * @param {*} value The value to check.\n     * @returns {boolean} Returns `true` if `value` is a map, else `false`.\n     * @example\n     *\n     * _.isMap(new Map);\n     * // => true\n     *\n     * _.isMap(new WeakMap);\n     * // => false\n     */\n    var isMap = nodeIsMap ? baseUnary(nodeIsMap) : baseIsMap;\n\n    /**\n     * Performs a partial deep comparison between `object` and `source` to\n     * determine if `object` contains equivalent property values.\n     *\n     * **Note:** This method is equivalent to `_.matches` when `source` is\n     * partially applied.\n     *\n     * Partial comparisons will match empty array and empty object `source`\n     * values against any array or object value, respectively. See `_.isEqual`\n     * for a list of supported value comparisons.\n     *\n     * @static\n     * @memberOf _\n     * @since 3.0.0\n     * @category Lang\n     * @param {Object} object The object to inspect.\n     * @param {Object} source The object of property values to match.\n     * @returns {boolean} Returns `true` if `object` is a match, else `false`.\n     * @example\n     *\n     * var object = { 'a': 1, 'b': 2 };\n     *\n     * _.isMatch(object, { 'b': 2 });\n     * // => true\n     *\n     * _.isMatch(object, { 'b': 1 });\n     * // => false\n     */\n    function isMatch(object, source) {\n      return object === source || baseIsMatch(object, source, getMatchData(source));\n    }\n\n    /**\n     * This method is like `_.isMatch` except that it accepts `customizer` which\n     * is invoked to compare values. If `customizer` returns `undefined`, comparisons\n     * are handled by the method instead. The `customizer` is invoked with five\n     * arguments: (objValue, srcValue, index|key, object, source).\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Lang\n     * @param {Object} object The object to inspect.\n     * @param {Object} source The object of property values to match.\n     * @param {Function} [customizer] The function to customize comparisons.\n     * @returns {boolean} Returns `true` if `object` is a match, else `false`.\n     * @example\n     *\n     * function isGreeting(value) {\n     *   return /^h(?:i|ello)$/.test(value);\n     * }\n     *\n     * function customizer(objValue, srcValue) {\n     *   if (isGreeting(objValue) && isGreeting(srcValue)) {\n     *     return true;\n     *   }\n     * }\n     *\n     * var object = { 'greeting': 'hello' };\n     * var source = { 'greeting': 'hi' };\n     *\n     * _.isMatchWith(object, source, customizer);\n     * // => true\n     */\n    function isMatchWith(object, source, customizer) {\n      customizer = typeof customizer == 'function' ? customizer : undefined;\n      return baseIsMatch(object, source, getMatchData(source), customizer);\n    }\n\n    /**\n     * Checks if `value` is `NaN`.\n     *\n     * **Note:** This method is based on\n     * [`Number.isNaN`](https://mdn.io/Number/isNaN) and is not the same as\n     * global [`isNaN`](https://mdn.io/isNaN) which returns `true` for\n     * `undefined` and other non-number values.\n     *\n     * @static\n     * @memberOf _\n     * @since 0.1.0\n     * @category Lang\n     * @param {*} value The value to check.\n     * @returns {boolean} Returns `true` if `value` is `NaN`, else `false`.\n     * @example\n     *\n     * _.isNaN(NaN);\n     * // => true\n     *\n     * _.isNaN(new Number(NaN));\n     * // => true\n     *\n     * isNaN(undefined);\n     * // => true\n     *\n     * _.isNaN(undefined);\n     * // => false\n     */\n    function isNaN(value) {\n      // An `NaN` primitive is the only value that is not equal to itself.\n      // Perform the `toStringTag` check first to avoid errors with some\n      // ActiveX objects in IE.\n      return isNumber(value) && value != +value;\n    }\n\n    /**\n     * Checks if `value` is a pristine native function.\n     *\n     * **Note:** This method can't reliably detect native functions in the presence\n     * of the core-js package because core-js circumvents this kind of detection.\n     * Despite multiple requests, the core-js maintainer has made it clear: any\n     * attempt to fix the detection will be obstructed. As a result, we're left\n     * with little choice but to throw an error. Unfortunately, this also affects\n     * packages, like [babel-polyfill](https://www.npmjs.com/package/babel-polyfill),\n     * which rely on core-js.\n     *\n     * @static\n     * @memberOf _\n     * @since 3.0.0\n     * @category Lang\n     * @param {*} value The value to check.\n     * @returns {boolean} Returns `true` if `value` is a native function,\n     *  else `false`.\n     * @example\n     *\n     * _.isNative(Array.prototype.push);\n     * // => true\n     *\n     * _.isNative(_);\n     * // => false\n     */\n    function isNative(value) {\n      if (isMaskable(value)) {\n        throw new Error(CORE_ERROR_TEXT);\n      }\n      return baseIsNative(value);\n    }\n\n    /**\n     * Checks if `value` is `null`.\n     *\n     * @static\n     * @memberOf _\n     * @since 0.1.0\n     * @category Lang\n     * @param {*} value The value to check.\n     * @returns {boolean} Returns `true` if `value` is `null`, else `false`.\n     * @example\n     *\n     * _.isNull(null);\n     * // => true\n     *\n     * _.isNull(void 0);\n     * // => false\n     */\n    function isNull(value) {\n      return value === null;\n    }\n\n    /**\n     * Checks if `value` is `null` or `undefined`.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Lang\n     * @param {*} value The value to check.\n     * @returns {boolean} Returns `true` if `value` is nullish, else `false`.\n     * @example\n     *\n     * _.isNil(null);\n     * // => true\n     *\n     * _.isNil(void 0);\n     * // => true\n     *\n     * _.isNil(NaN);\n     * // => false\n     */\n    function isNil(value) {\n      return value == null;\n    }\n\n    /**\n     * Checks if `value` is classified as a `Number` primitive or object.\n     *\n     * **Note:** To exclude `Infinity`, `-Infinity`, and `NaN`, which are\n     * classified as numbers, use the `_.isFinite` method.\n     *\n     * @static\n     * @memberOf _\n     * @since 0.1.0\n     * @category Lang\n     * @param {*} value The value to check.\n     * @returns {boolean} Returns `true` if `value` is a number, else `false`.\n     * @example\n     *\n     * _.isNumber(3);\n     * // => true\n     *\n     * _.isNumber(Number.MIN_VALUE);\n     * // => true\n     *\n     * _.isNumber(Infinity);\n     * // => true\n     *\n     * _.isNumber('3');\n     * // => false\n     */\n    function isNumber(value) {\n      return typeof value == 'number' ||\n        (isObjectLike(value) && baseGetTag(value) == numberTag);\n    }\n\n    /**\n     * Checks if `value` is a plain object, that is, an object created by the\n     * `Object` constructor or one with a `[[Prototype]]` of `null`.\n     *\n     * @static\n     * @memberOf _\n     * @since 0.8.0\n     * @category Lang\n     * @param {*} value The value to check.\n     * @returns {boolean} Returns `true` if `value` is a plain object, else `false`.\n     * @example\n     *\n     * function Foo() {\n     *   this.a = 1;\n     * }\n     *\n     * _.isPlainObject(new Foo);\n     * // => false\n     *\n     * _.isPlainObject([1, 2, 3]);\n     * // => false\n     *\n     * _.isPlainObject({ 'x': 0, 'y': 0 });\n     * // => true\n     *\n     * _.isPlainObject(Object.create(null));\n     * // => true\n     */\n    function isPlainObject(value) {\n      if (!isObjectLike(value) || baseGetTag(value) != objectTag) {\n        return false;\n      }\n      var proto = getPrototype(value);\n      if (proto === null) {\n        return true;\n      }\n      var Ctor = hasOwnProperty.call(proto, 'constructor') && proto.constructor;\n      return typeof Ctor == 'function' && Ctor instanceof Ctor &&\n        funcToString.call(Ctor) == objectCtorString;\n    }\n\n    /**\n     * Checks if `value` is classified as a `RegExp` object.\n     *\n     * @static\n     * @memberOf _\n     * @since 0.1.0\n     * @category Lang\n     * @param {*} value The value to check.\n     * @returns {boolean} Returns `true` if `value` is a regexp, else `false`.\n     * @example\n     *\n     * _.isRegExp(/abc/);\n     * // => true\n     *\n     * _.isRegExp('/abc/');\n     * // => false\n     */\n    var isRegExp = nodeIsRegExp ? baseUnary(nodeIsRegExp) : baseIsRegExp;\n\n    /**\n     * Checks if `value` is a safe integer. An integer is safe if it's an IEEE-754\n     * double precision number which isn't the result of a rounded unsafe integer.\n     *\n     * **Note:** This method is based on\n     * [`Number.isSafeInteger`](https://mdn.io/Number/isSafeInteger).\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Lang\n     * @param {*} value The value to check.\n     * @returns {boolean} Returns `true` if `value` is a safe integer, else `false`.\n     * @example\n     *\n     * _.isSafeInteger(3);\n     * // => true\n     *\n     * _.isSafeInteger(Number.MIN_VALUE);\n     * // => false\n     *\n     * _.isSafeInteger(Infinity);\n     * // => false\n     *\n     * _.isSafeInteger('3');\n     * // => false\n     */\n    function isSafeInteger(value) {\n      return isInteger(value) && value >= -MAX_SAFE_INTEGER && value <= MAX_SAFE_INTEGER;\n    }\n\n    /**\n     * Checks if `value` is classified as a `Set` object.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.3.0\n     * @category Lang\n     * @param {*} value The value to check.\n     * @returns {boolean} Returns `true` if `value` is a set, else `false`.\n     * @example\n     *\n     * _.isSet(new Set);\n     * // => true\n     *\n     * _.isSet(new WeakSet);\n     * // => false\n     */\n    var isSet = nodeIsSet ? baseUnary(nodeIsSet) : baseIsSet;\n\n    /**\n     * Checks if `value` is classified as a `String` primitive or object.\n     *\n     * @static\n     * @since 0.1.0\n     * @memberOf _\n     * @category Lang\n     * @param {*} value The value to check.\n     * @returns {boolean} Returns `true` if `value` is a string, else `false`.\n     * @example\n     *\n     * _.isString('abc');\n     * // => true\n     *\n     * _.isString(1);\n     * // => false\n     */\n    function isString(value) {\n      return typeof value == 'string' ||\n        (!isArray(value) && isObjectLike(value) && baseGetTag(value) == stringTag);\n    }\n\n    /**\n     * Checks if `value` is classified as a `Symbol` primitive or object.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Lang\n     * @param {*} value The value to check.\n     * @returns {boolean} Returns `true` if `value` is a symbol, else `false`.\n     * @example\n     *\n     * _.isSymbol(Symbol.iterator);\n     * // => true\n     *\n     * _.isSymbol('abc');\n     * // => false\n     */\n    function isSymbol(value) {\n      return typeof value == 'symbol' ||\n        (isObjectLike(value) && baseGetTag(value) == symbolTag);\n    }\n\n    /**\n     * Checks if `value` is classified as a typed array.\n     *\n     * @static\n     * @memberOf _\n     * @since 3.0.0\n     * @category Lang\n     * @param {*} value The value to check.\n     * @returns {boolean} Returns `true` if `value` is a typed array, else `false`.\n     * @example\n     *\n     * _.isTypedArray(new Uint8Array);\n     * // => true\n     *\n     * _.isTypedArray([]);\n     * // => false\n     */\n    var isTypedArray = nodeIsTypedArray ? baseUnary(nodeIsTypedArray) : baseIsTypedArray;\n\n    /**\n     * Checks if `value` is `undefined`.\n     *\n     * @static\n     * @since 0.1.0\n     * @memberOf _\n     * @category Lang\n     * @param {*} value The value to check.\n     * @returns {boolean} Returns `true` if `value` is `undefined`, else `false`.\n     * @example\n     *\n     * _.isUndefined(void 0);\n     * // => true\n     *\n     * _.isUndefined(null);\n     * // => false\n     */\n    function isUndefined(value) {\n      return value === undefined;\n    }\n\n    /**\n     * Checks if `value` is classified as a `WeakMap` object.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.3.0\n     * @category Lang\n     * @param {*} value The value to check.\n     * @returns {boolean} Returns `true` if `value` is a weak map, else `false`.\n     * @example\n     *\n     * _.isWeakMap(new WeakMap);\n     * // => true\n     *\n     * _.isWeakMap(new Map);\n     * // => false\n     */\n    function isWeakMap(value) {\n      return isObjectLike(value) && getTag(value) == weakMapTag;\n    }\n\n    /**\n     * Checks if `value` is classified as a `WeakSet` object.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.3.0\n     * @category Lang\n     * @param {*} value The value to check.\n     * @returns {boolean} Returns `true` if `value` is a weak set, else `false`.\n     * @example\n     *\n     * _.isWeakSet(new WeakSet);\n     * // => true\n     *\n     * _.isWeakSet(new Set);\n     * // => false\n     */\n    function isWeakSet(value) {\n      return isObjectLike(value) && baseGetTag(value) == weakSetTag;\n    }\n\n    /**\n     * Checks if `value` is less than `other`.\n     *\n     * @static\n     * @memberOf _\n     * @since 3.9.0\n     * @category Lang\n     * @param {*} value The value to compare.\n     * @param {*} other The other value to compare.\n     * @returns {boolean} Returns `true` if `value` is less than `other`,\n     *  else `false`.\n     * @see _.gt\n     * @example\n     *\n     * _.lt(1, 3);\n     * // => true\n     *\n     * _.lt(3, 3);\n     * // => false\n     *\n     * _.lt(3, 1);\n     * // => false\n     */\n    var lt = createRelationalOperation(baseLt);\n\n    /**\n     * Checks if `value` is less than or equal to `other`.\n     *\n     * @static\n     * @memberOf _\n     * @since 3.9.0\n     * @category Lang\n     * @param {*} value The value to compare.\n     * @param {*} other The other value to compare.\n     * @returns {boolean} Returns `true` if `value` is less than or equal to\n     *  `other`, else `false`.\n     * @see _.gte\n     * @example\n     *\n     * _.lte(1, 3);\n     * // => true\n     *\n     * _.lte(3, 3);\n     * // => true\n     *\n     * _.lte(3, 1);\n     * // => false\n     */\n    var lte = createRelationalOperation(function(value, other) {\n      return value <= other;\n    });\n\n    /**\n     * Converts `value` to an array.\n     *\n     * @static\n     * @since 0.1.0\n     * @memberOf _\n     * @category Lang\n     * @param {*} value The value to convert.\n     * @returns {Array} Returns the converted array.\n     * @example\n     *\n     * _.toArray({ 'a': 1, 'b': 2 });\n     * // => [1, 2]\n     *\n     * _.toArray('abc');\n     * // => ['a', 'b', 'c']\n     *\n     * _.toArray(1);\n     * // => []\n     *\n     * _.toArray(null);\n     * // => []\n     */\n    function toArray(value) {\n      if (!value) {\n        return [];\n      }\n      if (isArrayLike(value)) {\n        return isString(value) ? stringToArray(value) : copyArray(value);\n      }\n      if (symIterator && value[symIterator]) {\n        return iteratorToArray(value[symIterator]());\n      }\n      var tag = getTag(value),\n          func = tag == mapTag ? mapToArray : (tag == setTag ? setToArray : values);\n\n      return func(value);\n    }\n\n    /**\n     * Converts `value` to a finite number.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.12.0\n     * @category Lang\n     * @param {*} value The value to convert.\n     * @returns {number} Returns the converted number.\n     * @example\n     *\n     * _.toFinite(3.2);\n     * // => 3.2\n     *\n     * _.toFinite(Number.MIN_VALUE);\n     * // => 5e-324\n     *\n     * _.toFinite(Infinity);\n     * // => 1.7976931348623157e+308\n     *\n     * _.toFinite('3.2');\n     * // => 3.2\n     */\n    function toFinite(value) {\n      if (!value) {\n        return value === 0 ? value : 0;\n      }\n      value = toNumber(value);\n      if (value === INFINITY || value === -INFINITY) {\n        var sign = (value < 0 ? -1 : 1);\n        return sign * MAX_INTEGER;\n      }\n      return value === value ? value : 0;\n    }\n\n    /**\n     * Converts `value` to an integer.\n     *\n     * **Note:** This method is loosely based on\n     * [`ToInteger`](http://www.ecma-international.org/ecma-262/7.0/#sec-tointeger).\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Lang\n     * @param {*} value The value to convert.\n     * @returns {number} Returns the converted integer.\n     * @example\n     *\n     * _.toInteger(3.2);\n     * // => 3\n     *\n     * _.toInteger(Number.MIN_VALUE);\n     * // => 0\n     *\n     * _.toInteger(Infinity);\n     * // => 1.7976931348623157e+308\n     *\n     * _.toInteger('3.2');\n     * // => 3\n     */\n    function toInteger(value) {\n      var result = toFinite(value),\n          remainder = result % 1;\n\n      return result === result ? (remainder ? result - remainder : result) : 0;\n    }\n\n    /**\n     * Converts `value` to an integer suitable for use as the length of an\n     * array-like object.\n     *\n     * **Note:** This method is based on\n     * [`ToLength`](http://ecma-international.org/ecma-262/7.0/#sec-tolength).\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Lang\n     * @param {*} value The value to convert.\n     * @returns {number} Returns the converted integer.\n     * @example\n     *\n     * _.toLength(3.2);\n     * // => 3\n     *\n     * _.toLength(Number.MIN_VALUE);\n     * // => 0\n     *\n     * _.toLength(Infinity);\n     * // => 4294967295\n     *\n     * _.toLength('3.2');\n     * // => 3\n     */\n    function toLength(value) {\n      return value ? baseClamp(toInteger(value), 0, MAX_ARRAY_LENGTH) : 0;\n    }\n\n    /**\n     * Converts `value` to a number.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Lang\n     * @param {*} value The value to process.\n     * @returns {number} Returns the number.\n     * @example\n     *\n     * _.toNumber(3.2);\n     * // => 3.2\n     *\n     * _.toNumber(Number.MIN_VALUE);\n     * // => 5e-324\n     *\n     * _.toNumber(Infinity);\n     * // => Infinity\n     *\n     * _.toNumber('3.2');\n     * // => 3.2\n     */\n    function toNumber(value) {\n      if (typeof value == 'number') {\n        return value;\n      }\n      if (isSymbol(value)) {\n        return NAN;\n      }\n      if (isObject(value)) {\n        var other = typeof value.valueOf == 'function' ? value.valueOf() : value;\n        value = isObject(other) ? (other + '') : other;\n      }\n      if (typeof value != 'string') {\n        return value === 0 ? value : +value;\n      }\n      value = baseTrim(value);\n      var isBinary = reIsBinary.test(value);\n      return (isBinary || reIsOctal.test(value))\n        ? freeParseInt(value.slice(2), isBinary ? 2 : 8)\n        : (reIsBadHex.test(value) ? NAN : +value);\n    }\n\n    /**\n     * Converts `value` to a plain object flattening inherited enumerable string\n     * keyed properties of `value` to own properties of the plain object.\n     *\n     * @static\n     * @memberOf _\n     * @since 3.0.0\n     * @category Lang\n     * @param {*} value The value to convert.\n     * @returns {Object} Returns the converted plain object.\n     * @example\n     *\n     * function Foo() {\n     *   this.b = 2;\n     * }\n     *\n     * Foo.prototype.c = 3;\n     *\n     * _.assign({ 'a': 1 }, new Foo);\n     * // => { 'a': 1, 'b': 2 }\n     *\n     * _.assign({ 'a': 1 }, _.toPlainObject(new Foo));\n     * // => { 'a': 1, 'b': 2, 'c': 3 }\n     */\n    function toPlainObject(value) {\n      return copyObject(value, keysIn(value));\n    }\n\n    /**\n     * Converts `value` to a safe integer. A safe integer can be compared and\n     * represented correctly.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Lang\n     * @param {*} value The value to convert.\n     * @returns {number} Returns the converted integer.\n     * @example\n     *\n     * _.toSafeInteger(3.2);\n     * // => 3\n     *\n     * _.toSafeInteger(Number.MIN_VALUE);\n     * // => 0\n     *\n     * _.toSafeInteger(Infinity);\n     * // => 9007199254740991\n     *\n     * _.toSafeInteger('3.2');\n     * // => 3\n     */\n    function toSafeInteger(value) {\n      return value\n        ? baseClamp(toInteger(value), -MAX_SAFE_INTEGER, MAX_SAFE_INTEGER)\n        : (value === 0 ? value : 0);\n    }\n\n    /**\n     * Converts `value` to a string. An empty string is returned for `null`\n     * and `undefined` values. The sign of `-0` is preserved.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Lang\n     * @param {*} value The value to convert.\n     * @returns {string} Returns the converted string.\n     * @example\n     *\n     * _.toString(null);\n     * // => ''\n     *\n     * _.toString(-0);\n     * // => '-0'\n     *\n     * _.toString([1, 2, 3]);\n     * // => '1,2,3'\n     */\n    function toString(value) {\n      return value == null ? '' : baseToString(value);\n    }\n\n    /*------------------------------------------------------------------------*/\n\n    /**\n     * Assigns own enumerable string keyed properties of source objects to the\n     * destination object. Source objects are applied from left to right.\n     * Subsequent sources overwrite property assignments of previous sources.\n     *\n     * **Note:** This method mutates `object` and is loosely based on\n     * [`Object.assign`](https://mdn.io/Object/assign).\n     *\n     * @static\n     * @memberOf _\n     * @since 0.10.0\n     * @category Object\n     * @param {Object} object The destination object.\n     * @param {...Object} [sources] The source objects.\n     * @returns {Object} Returns `object`.\n     * @see _.assignIn\n     * @example\n     *\n     * function Foo() {\n     *   this.a = 1;\n     * }\n     *\n     * function Bar() {\n     *   this.c = 3;\n     * }\n     *\n     * Foo.prototype.b = 2;\n     * Bar.prototype.d = 4;\n     *\n     * _.assign({ 'a': 0 }, new Foo, new Bar);\n     * // => { 'a': 1, 'c': 3 }\n     */\n    var assign = createAssigner(function(object, source) {\n      if (isPrototype(source) || isArrayLike(source)) {\n        copyObject(source, keys(source), object);\n        return;\n      }\n      for (var key in source) {\n        if (hasOwnProperty.call(source, key)) {\n          assignValue(object, key, source[key]);\n        }\n      }\n    });\n\n    /**\n     * This method is like `_.assign` except that it iterates over own and\n     * inherited source properties.\n     *\n     * **Note:** This method mutates `object`.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @alias extend\n     * @category Object\n     * @param {Object} object The destination object.\n     * @param {...Object} [sources] The source objects.\n     * @returns {Object} Returns `object`.\n     * @see _.assign\n     * @example\n     *\n     * function Foo() {\n     *   this.a = 1;\n     * }\n     *\n     * function Bar() {\n     *   this.c = 3;\n     * }\n     *\n     * Foo.prototype.b = 2;\n     * Bar.prototype.d = 4;\n     *\n     * _.assignIn({ 'a': 0 }, new Foo, new Bar);\n     * // => { 'a': 1, 'b': 2, 'c': 3, 'd': 4 }\n     */\n    var assignIn = createAssigner(function(object, source) {\n      copyObject(source, keysIn(source), object);\n    });\n\n    /**\n     * This method is like `_.assignIn` except that it accepts `customizer`\n     * which is invoked to produce the assigned values. If `customizer` returns\n     * `undefined`, assignment is handled by the method instead. The `customizer`\n     * is invoked with five arguments: (objValue, srcValue, key, object, source).\n     *\n     * **Note:** This method mutates `object`.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @alias extendWith\n     * @category Object\n     * @param {Object} object The destination object.\n     * @param {...Object} sources The source objects.\n     * @param {Function} [customizer] The function to customize assigned values.\n     * @returns {Object} Returns `object`.\n     * @see _.assignWith\n     * @example\n     *\n     * function customizer(objValue, srcValue) {\n     *   return _.isUndefined(objValue) ? srcValue : objValue;\n     * }\n     *\n     * var defaults = _.partialRight(_.assignInWith, customizer);\n     *\n     * defaults({ 'a': 1 }, { 'b': 2 }, { 'a': 3 });\n     * // => { 'a': 1, 'b': 2 }\n     */\n    var assignInWith = createAssigner(function(object, source, srcIndex, customizer) {\n      copyObject(source, keysIn(source), object, customizer);\n    });\n\n    /**\n     * This method is like `_.assign` except that it accepts `customizer`\n     * which is invoked to produce the assigned values. If `customizer` returns\n     * `undefined`, assignment is handled by the method instead. The `customizer`\n     * is invoked with five arguments: (objValue, srcValue, key, object, source).\n     *\n     * **Note:** This method mutates `object`.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Object\n     * @param {Object} object The destination object.\n     * @param {...Object} sources The source objects.\n     * @param {Function} [customizer] The function to customize assigned values.\n     * @returns {Object} Returns `object`.\n     * @see _.assignInWith\n     * @example\n     *\n     * function customizer(objValue, srcValue) {\n     *   return _.isUndefined(objValue) ? srcValue : objValue;\n     * }\n     *\n     * var defaults = _.partialRight(_.assignWith, customizer);\n     *\n     * defaults({ 'a': 1 }, { 'b': 2 }, { 'a': 3 });\n     * // => { 'a': 1, 'b': 2 }\n     */\n    var assignWith = createAssigner(function(object, source, srcIndex, customizer) {\n      copyObject(source, keys(source), object, customizer);\n    });\n\n    /**\n     * Creates an array of values corresponding to `paths` of `object`.\n     *\n     * @static\n     * @memberOf _\n     * @since 1.0.0\n     * @category Object\n     * @param {Object} object The object to iterate over.\n     * @param {...(string|string[])} [paths] The property paths to pick.\n     * @returns {Array} Returns the picked values.\n     * @example\n     *\n     * var object = { 'a': [{ 'b': { 'c': 3 } }, 4] };\n     *\n     * _.at(object, ['a[0].b.c', 'a[1]']);\n     * // => [3, 4]\n     */\n    var at = flatRest(baseAt);\n\n    /**\n     * Creates an object that inherits from the `prototype` object. If a\n     * `properties` object is given, its own enumerable string keyed properties\n     * are assigned to the created object.\n     *\n     * @static\n     * @memberOf _\n     * @since 2.3.0\n     * @category Object\n     * @param {Object} prototype The object to inherit from.\n     * @param {Object} [properties] The properties to assign to the object.\n     * @returns {Object} Returns the new object.\n     * @example\n     *\n     * function Shape() {\n     *   this.x = 0;\n     *   this.y = 0;\n     * }\n     *\n     * function Circle() {\n     *   Shape.call(this);\n     * }\n     *\n     * Circle.prototype = _.create(Shape.prototype, {\n     *   'constructor': Circle\n     * });\n     *\n     * var circle = new Circle;\n     * circle instanceof Circle;\n     * // => true\n     *\n     * circle instanceof Shape;\n     * // => true\n     */\n    function create(prototype, properties) {\n      var result = baseCreate(prototype);\n      return properties == null ? result : baseAssign(result, properties);\n    }\n\n    /**\n     * Assigns own and inherited enumerable string keyed properties of source\n     * objects to the destination object for all destination properties that\n     * resolve to `undefined`. Source objects are applied from left to right.\n     * Once a property is set, additional values of the same property are ignored.\n     *\n     * **Note:** This method mutates `object`.\n     *\n     * @static\n     * @since 0.1.0\n     * @memberOf _\n     * @category Object\n     * @param {Object} object The destination object.\n     * @param {...Object} [sources] The source objects.\n     * @returns {Object} Returns `object`.\n     * @see _.defaultsDeep\n     * @example\n     *\n     * _.defaults({ 'a': 1 }, { 'b': 2 }, { 'a': 3 });\n     * // => { 'a': 1, 'b': 2 }\n     */\n    var defaults = baseRest(function(object, sources) {\n      object = Object(object);\n\n      var index = -1;\n      var length = sources.length;\n      var guard = length > 2 ? sources[2] : undefined;\n\n      if (guard && isIterateeCall(sources[0], sources[1], guard)) {\n        length = 1;\n      }\n\n      while (++index < length) {\n        var source = sources[index];\n        var props = keysIn(source);\n        var propsIndex = -1;\n        var propsLength = props.length;\n\n        while (++propsIndex < propsLength) {\n          var key = props[propsIndex];\n          var value = object[key];\n\n          if (value === undefined ||\n              (eq(value, objectProto[key]) && !hasOwnProperty.call(object, key))) {\n            object[key] = source[key];\n          }\n        }\n      }\n\n      return object;\n    });\n\n    /**\n     * This method is like `_.defaults` except that it recursively assigns\n     * default properties.\n     *\n     * **Note:** This method mutates `object`.\n     *\n     * @static\n     * @memberOf _\n     * @since 3.10.0\n     * @category Object\n     * @param {Object} object The destination object.\n     * @param {...Object} [sources] The source objects.\n     * @returns {Object} Returns `object`.\n     * @see _.defaults\n     * @example\n     *\n     * _.defaultsDeep({ 'a': { 'b': 2 } }, { 'a': { 'b': 1, 'c': 3 } });\n     * // => { 'a': { 'b': 2, 'c': 3 } }\n     */\n    var defaultsDeep = baseRest(function(args) {\n      args.push(undefined, customDefaultsMerge);\n      return apply(mergeWith, undefined, args);\n    });\n\n    /**\n     * This method is like `_.find` except that it returns the key of the first\n     * element `predicate` returns truthy for instead of the element itself.\n     *\n     * @static\n     * @memberOf _\n     * @since 1.1.0\n     * @category Object\n     * @param {Object} object The object to inspect.\n     * @param {Function} [predicate=_.identity] The function invoked per iteration.\n     * @returns {string|undefined} Returns the key of the matched element,\n     *  else `undefined`.\n     * @example\n     *\n     * var users = {\n     *   'barney':  { 'age': 36, 'active': true },\n     *   'fred':    { 'age': 40, 'active': false },\n     *   'pebbles': { 'age': 1,  'active': true }\n     * };\n     *\n     * _.findKey(users, function(o) { return o.age < 40; });\n     * // => 'barney' (iteration order is not guaranteed)\n     *\n     * // The `_.matches` iteratee shorthand.\n     * _.findKey(users, { 'age': 1, 'active': true });\n     * // => 'pebbles'\n     *\n     * // The `_.matchesProperty` iteratee shorthand.\n     * _.findKey(users, ['active', false]);\n     * // => 'fred'\n     *\n     * // The `_.property` iteratee shorthand.\n     * _.findKey(users, 'active');\n     * // => 'barney'\n     */\n    function findKey(object, predicate) {\n      return baseFindKey(object, getIteratee(predicate, 3), baseForOwn);\n    }\n\n    /**\n     * This method is like `_.findKey` except that it iterates over elements of\n     * a collection in the opposite order.\n     *\n     * @static\n     * @memberOf _\n     * @since 2.0.0\n     * @category Object\n     * @param {Object} object The object to inspect.\n     * @param {Function} [predicate=_.identity] The function invoked per iteration.\n     * @returns {string|undefined} Returns the key of the matched element,\n     *  else `undefined`.\n     * @example\n     *\n     * var users = {\n     *   'barney':  { 'age': 36, 'active': true },\n     *   'fred':    { 'age': 40, 'active': false },\n     *   'pebbles': { 'age': 1,  'active': true }\n     * };\n     *\n     * _.findLastKey(users, function(o) { return o.age < 40; });\n     * // => returns 'pebbles' assuming `_.findKey` returns 'barney'\n     *\n     * // The `_.matches` iteratee shorthand.\n     * _.findLastKey(users, { 'age': 36, 'active': true });\n     * // => 'barney'\n     *\n     * // The `_.matchesProperty` iteratee shorthand.\n     * _.findLastKey(users, ['active', false]);\n     * // => 'fred'\n     *\n     * // The `_.property` iteratee shorthand.\n     * _.findLastKey(users, 'active');\n     * // => 'pebbles'\n     */\n    function findLastKey(object, predicate) {\n      return baseFindKey(object, getIteratee(predicate, 3), baseForOwnRight);\n    }\n\n    /**\n     * Iterates over own and inherited enumerable string keyed properties of an\n     * object and invokes `iteratee` for each property. The iteratee is invoked\n     * with three arguments: (value, key, object). Iteratee functions may exit\n     * iteration early by explicitly returning `false`.\n     *\n     * @static\n     * @memberOf _\n     * @since 0.3.0\n     * @category Object\n     * @param {Object} object The object to iterate over.\n     * @param {Function} [iteratee=_.identity] The function invoked per iteration.\n     * @returns {Object} Returns `object`.\n     * @see _.forInRight\n     * @example\n     *\n     * function Foo() {\n     *   this.a = 1;\n     *   this.b = 2;\n     * }\n     *\n     * Foo.prototype.c = 3;\n     *\n     * _.forIn(new Foo, function(value, key) {\n     *   console.log(key);\n     * });\n     * // => Logs 'a', 'b', then 'c' (iteration order is not guaranteed).\n     */\n    function forIn(object, iteratee) {\n      return object == null\n        ? object\n        : baseFor(object, getIteratee(iteratee, 3), keysIn);\n    }\n\n    /**\n     * This method is like `_.forIn` except that it iterates over properties of\n     * `object` in the opposite order.\n     *\n     * @static\n     * @memberOf _\n     * @since 2.0.0\n     * @category Object\n     * @param {Object} object The object to iterate over.\n     * @param {Function} [iteratee=_.identity] The function invoked per iteration.\n     * @returns {Object} Returns `object`.\n     * @see _.forIn\n     * @example\n     *\n     * function Foo() {\n     *   this.a = 1;\n     *   this.b = 2;\n     * }\n     *\n     * Foo.prototype.c = 3;\n     *\n     * _.forInRight(new Foo, function(value, key) {\n     *   console.log(key);\n     * });\n     * // => Logs 'c', 'b', then 'a' assuming `_.forIn` logs 'a', 'b', then 'c'.\n     */\n    function forInRight(object, iteratee) {\n      return object == null\n        ? object\n        : baseForRight(object, getIteratee(iteratee, 3), keysIn);\n    }\n\n    /**\n     * Iterates over own enumerable string keyed properties of an object and\n     * invokes `iteratee` for each property. The iteratee is invoked with three\n     * arguments: (value, key, object). Iteratee functions may exit iteration\n     * early by explicitly returning `false`.\n     *\n     * @static\n     * @memberOf _\n     * @since 0.3.0\n     * @category Object\n     * @param {Object} object The object to iterate over.\n     * @param {Function} [iteratee=_.identity] The function invoked per iteration.\n     * @returns {Object} Returns `object`.\n     * @see _.forOwnRight\n     * @example\n     *\n     * function Foo() {\n     *   this.a = 1;\n     *   this.b = 2;\n     * }\n     *\n     * Foo.prototype.c = 3;\n     *\n     * _.forOwn(new Foo, function(value, key) {\n     *   console.log(key);\n     * });\n     * // => Logs 'a' then 'b' (iteration order is not guaranteed).\n     */\n    function forOwn(object, iteratee) {\n      return object && baseForOwn(object, getIteratee(iteratee, 3));\n    }\n\n    /**\n     * This method is like `_.forOwn` except that it iterates over properties of\n     * `object` in the opposite order.\n     *\n     * @static\n     * @memberOf _\n     * @since 2.0.0\n     * @category Object\n     * @param {Object} object The object to iterate over.\n     * @param {Function} [iteratee=_.identity] The function invoked per iteration.\n     * @returns {Object} Returns `object`.\n     * @see _.forOwn\n     * @example\n     *\n     * function Foo() {\n     *   this.a = 1;\n     *   this.b = 2;\n     * }\n     *\n     * Foo.prototype.c = 3;\n     *\n     * _.forOwnRight(new Foo, function(value, key) {\n     *   console.log(key);\n     * });\n     * // => Logs 'b' then 'a' assuming `_.forOwn` logs 'a' then 'b'.\n     */\n    function forOwnRight(object, iteratee) {\n      return object && baseForOwnRight(object, getIteratee(iteratee, 3));\n    }\n\n    /**\n     * Creates an array of function property names from own enumerable properties\n     * of `object`.\n     *\n     * @static\n     * @since 0.1.0\n     * @memberOf _\n     * @category Object\n     * @param {Object} object The object to inspect.\n     * @returns {Array} Returns the function names.\n     * @see _.functionsIn\n     * @example\n     *\n     * function Foo() {\n     *   this.a = _.constant('a');\n     *   this.b = _.constant('b');\n     * }\n     *\n     * Foo.prototype.c = _.constant('c');\n     *\n     * _.functions(new Foo);\n     * // => ['a', 'b']\n     */\n    function functions(object) {\n      return object == null ? [] : baseFunctions(object, keys(object));\n    }\n\n    /**\n     * Creates an array of function property names from own and inherited\n     * enumerable properties of `object`.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Object\n     * @param {Object} object The object to inspect.\n     * @returns {Array} Returns the function names.\n     * @see _.functions\n     * @example\n     *\n     * function Foo() {\n     *   this.a = _.constant('a');\n     *   this.b = _.constant('b');\n     * }\n     *\n     * Foo.prototype.c = _.constant('c');\n     *\n     * _.functionsIn(new Foo);\n     * // => ['a', 'b', 'c']\n     */\n    function functionsIn(object) {\n      return object == null ? [] : baseFunctions(object, keysIn(object));\n    }\n\n    /**\n     * Gets the value at `path` of `object`. If the resolved value is\n     * `undefined`, the `defaultValue` is returned in its place.\n     *\n     * @static\n     * @memberOf _\n     * @since 3.7.0\n     * @category Object\n     * @param {Object} object The object to query.\n     * @param {Array|string} path The path of the property to get.\n     * @param {*} [defaultValue] The value returned for `undefined` resolved values.\n     * @returns {*} Returns the resolved value.\n     * @example\n     *\n     * var object = { 'a': [{ 'b': { 'c': 3 } }] };\n     *\n     * _.get(object, 'a[0].b.c');\n     * // => 3\n     *\n     * _.get(object, ['a', '0', 'b', 'c']);\n     * // => 3\n     *\n     * _.get(object, 'a.b.c', 'default');\n     * // => 'default'\n     */\n    function get(object, path, defaultValue) {\n      var result = object == null ? undefined : baseGet(object, path);\n      return result === undefined ? defaultValue : result;\n    }\n\n    /**\n     * Checks if `path` is a direct property of `object`.\n     *\n     * @static\n     * @since 0.1.0\n     * @memberOf _\n     * @category Object\n     * @param {Object} object The object to query.\n     * @param {Array|string} path The path to check.\n     * @returns {boolean} Returns `true` if `path` exists, else `false`.\n     * @example\n     *\n     * var object = { 'a': { 'b': 2 } };\n     * var other = _.create({ 'a': _.create({ 'b': 2 }) });\n     *\n     * _.has(object, 'a');\n     * // => true\n     *\n     * _.has(object, 'a.b');\n     * // => true\n     *\n     * _.has(object, ['a', 'b']);\n     * // => true\n     *\n     * _.has(other, 'a');\n     * // => false\n     */\n    function has(object, path) {\n      return object != null && hasPath(object, path, baseHas);\n    }\n\n    /**\n     * Checks if `path` is a direct or inherited property of `object`.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Object\n     * @param {Object} object The object to query.\n     * @param {Array|string} path The path to check.\n     * @returns {boolean} Returns `true` if `path` exists, else `false`.\n     * @example\n     *\n     * var object = _.create({ 'a': _.create({ 'b': 2 }) });\n     *\n     * _.hasIn(object, 'a');\n     * // => true\n     *\n     * _.hasIn(object, 'a.b');\n     * // => true\n     *\n     * _.hasIn(object, ['a', 'b']);\n     * // => true\n     *\n     * _.hasIn(object, 'b');\n     * // => false\n     */\n    function hasIn(object, path) {\n      return object != null && hasPath(object, path, baseHasIn);\n    }\n\n    /**\n     * Creates an object composed of the inverted keys and values of `object`.\n     * If `object` contains duplicate values, subsequent values overwrite\n     * property assignments of previous values.\n     *\n     * @static\n     * @memberOf _\n     * @since 0.7.0\n     * @category Object\n     * @param {Object} object The object to invert.\n     * @returns {Object} Returns the new inverted object.\n     * @example\n     *\n     * var object = { 'a': 1, 'b': 2, 'c': 1 };\n     *\n     * _.invert(object);\n     * // => { '1': 'c', '2': 'b' }\n     */\n    var invert = createInverter(function(result, value, key) {\n      if (value != null &&\n          typeof value.toString != 'function') {\n        value = nativeObjectToString.call(value);\n      }\n\n      result[value] = key;\n    }, constant(identity));\n\n    /**\n     * This method is like `_.invert` except that the inverted object is generated\n     * from the results of running each element of `object` thru `iteratee`. The\n     * corresponding inverted value of each inverted key is an array of keys\n     * responsible for generating the inverted value. The iteratee is invoked\n     * with one argument: (value).\n     *\n     * @static\n     * @memberOf _\n     * @since 4.1.0\n     * @category Object\n     * @param {Object} object The object to invert.\n     * @param {Function} [iteratee=_.identity] The iteratee invoked per element.\n     * @returns {Object} Returns the new inverted object.\n     * @example\n     *\n     * var object = { 'a': 1, 'b': 2, 'c': 1 };\n     *\n     * _.invertBy(object);\n     * // => { '1': ['a', 'c'], '2': ['b'] }\n     *\n     * _.invertBy(object, function(value) {\n     *   return 'group' + value;\n     * });\n     * // => { 'group1': ['a', 'c'], 'group2': ['b'] }\n     */\n    var invertBy = createInverter(function(result, value, key) {\n      if (value != null &&\n          typeof value.toString != 'function') {\n        value = nativeObjectToString.call(value);\n      }\n\n      if (hasOwnProperty.call(result, value)) {\n        result[value].push(key);\n      } else {\n        result[value] = [key];\n      }\n    }, getIteratee);\n\n    /**\n     * Invokes the method at `path` of `object`.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Object\n     * @param {Object} object The object to query.\n     * @param {Array|string} path The path of the method to invoke.\n     * @param {...*} [args] The arguments to invoke the method with.\n     * @returns {*} Returns the result of the invoked method.\n     * @example\n     *\n     * var object = { 'a': [{ 'b': { 'c': [1, 2, 3, 4] } }] };\n     *\n     * _.invoke(object, 'a[0].b.c.slice', 1, 3);\n     * // => [2, 3]\n     */\n    var invoke = baseRest(baseInvoke);\n\n    /**\n     * Creates an array of the own enumerable property names of `object`.\n     *\n     * **Note:** Non-object values are coerced to objects. See the\n     * [ES spec](http://ecma-international.org/ecma-262/7.0/#sec-object.keys)\n     * for more details.\n     *\n     * @static\n     * @since 0.1.0\n     * @memberOf _\n     * @category Object\n     * @param {Object} object The object to query.\n     * @returns {Array} Returns the array of property names.\n     * @example\n     *\n     * function Foo() {\n     *   this.a = 1;\n     *   this.b = 2;\n     * }\n     *\n     * Foo.prototype.c = 3;\n     *\n     * _.keys(new Foo);\n     * // => ['a', 'b'] (iteration order is not guaranteed)\n     *\n     * _.keys('hi');\n     * // => ['0', '1']\n     */\n    function keys(object) {\n      return isArrayLike(object) ? arrayLikeKeys(object) : baseKeys(object);\n    }\n\n    /**\n     * Creates an array of the own and inherited enumerable property names of `object`.\n     *\n     * **Note:** Non-object values are coerced to objects.\n     *\n     * @static\n     * @memberOf _\n     * @since 3.0.0\n     * @category Object\n     * @param {Object} object The object to query.\n     * @returns {Array} Returns the array of property names.\n     * @example\n     *\n     * function Foo() {\n     *   this.a = 1;\n     *   this.b = 2;\n     * }\n     *\n     * Foo.prototype.c = 3;\n     *\n     * _.keysIn(new Foo);\n     * // => ['a', 'b', 'c'] (iteration order is not guaranteed)\n     */\n    function keysIn(object) {\n      return isArrayLike(object) ? arrayLikeKeys(object, true) : baseKeysIn(object);\n    }\n\n    /**\n     * The opposite of `_.mapValues`; this method creates an object with the\n     * same values as `object` and keys generated by running each own enumerable\n     * string keyed property of `object` thru `iteratee`. The iteratee is invoked\n     * with three arguments: (value, key, object).\n     *\n     * @static\n     * @memberOf _\n     * @since 3.8.0\n     * @category Object\n     * @param {Object} object The object to iterate over.\n     * @param {Function} [iteratee=_.identity] The function invoked per iteration.\n     * @returns {Object} Returns the new mapped object.\n     * @see _.mapValues\n     * @example\n     *\n     * _.mapKeys({ 'a': 1, 'b': 2 }, function(value, key) {\n     *   return key + value;\n     * });\n     * // => { 'a1': 1, 'b2': 2 }\n     */\n    function mapKeys(object, iteratee) {\n      var result = {};\n      iteratee = getIteratee(iteratee, 3);\n\n      baseForOwn(object, function(value, key, object) {\n        baseAssignValue(result, iteratee(value, key, object), value);\n      });\n      return result;\n    }\n\n    /**\n     * Creates an object with the same keys as `object` and values generated\n     * by running each own enumerable string keyed property of `object` thru\n     * `iteratee`. The iteratee is invoked with three arguments:\n     * (value, key, object).\n     *\n     * @static\n     * @memberOf _\n     * @since 2.4.0\n     * @category Object\n     * @param {Object} object The object to iterate over.\n     * @param {Function} [iteratee=_.identity] The function invoked per iteration.\n     * @returns {Object} Returns the new mapped object.\n     * @see _.mapKeys\n     * @example\n     *\n     * var users = {\n     *   'fred':    { 'user': 'fred',    'age': 40 },\n     *   'pebbles': { 'user': 'pebbles', 'age': 1 }\n     * };\n     *\n     * _.mapValues(users, function(o) { return o.age; });\n     * // => { 'fred': 40, 'pebbles': 1 } (iteration order is not guaranteed)\n     *\n     * // The `_.property` iteratee shorthand.\n     * _.mapValues(users, 'age');\n     * // => { 'fred': 40, 'pebbles': 1 } (iteration order is not guaranteed)\n     */\n    function mapValues(object, iteratee) {\n      var result = {};\n      iteratee = getIteratee(iteratee, 3);\n\n      baseForOwn(object, function(value, key, object) {\n        baseAssignValue(result, key, iteratee(value, key, object));\n      });\n      return result;\n    }\n\n    /**\n     * This method is like `_.assign` except that it recursively merges own and\n     * inherited enumerable string keyed properties of source objects into the\n     * destination object. Source properties that resolve to `undefined` are\n     * skipped if a destination value exists. Array and plain object properties\n     * are merged recursively. Other objects and value types are overridden by\n     * assignment. Source objects are applied from left to right. Subsequent\n     * sources overwrite property assignments of previous sources.\n     *\n     * **Note:** This method mutates `object`.\n     *\n     * @static\n     * @memberOf _\n     * @since 0.5.0\n     * @category Object\n     * @param {Object} object The destination object.\n     * @param {...Object} [sources] The source objects.\n     * @returns {Object} Returns `object`.\n     * @example\n     *\n     * var object = {\n     *   'a': [{ 'b': 2 }, { 'd': 4 }]\n     * };\n     *\n     * var other = {\n     *   'a': [{ 'c': 3 }, { 'e': 5 }]\n     * };\n     *\n     * _.merge(object, other);\n     * // => { 'a': [{ 'b': 2, 'c': 3 }, { 'd': 4, 'e': 5 }] }\n     */\n    var merge = createAssigner(function(object, source, srcIndex) {\n      baseMerge(object, source, srcIndex);\n    });\n\n    /**\n     * This method is like `_.merge` except that it accepts `customizer` which\n     * is invoked to produce the merged values of the destination and source\n     * properties. If `customizer` returns `undefined`, merging is handled by the\n     * method instead. The `customizer` is invoked with six arguments:\n     * (objValue, srcValue, key, object, source, stack).\n     *\n     * **Note:** This method mutates `object`.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Object\n     * @param {Object} object The destination object.\n     * @param {...Object} sources The source objects.\n     * @param {Function} customizer The function to customize assigned values.\n     * @returns {Object} Returns `object`.\n     * @example\n     *\n     * function customizer(objValue, srcValue) {\n     *   if (_.isArray(objValue)) {\n     *     return objValue.concat(srcValue);\n     *   }\n     * }\n     *\n     * var object = { 'a': [1], 'b': [2] };\n     * var other = { 'a': [3], 'b': [4] };\n     *\n     * _.mergeWith(object, other, customizer);\n     * // => { 'a': [1, 3], 'b': [2, 4] }\n     */\n    var mergeWith = createAssigner(function(object, source, srcIndex, customizer) {\n      baseMerge(object, source, srcIndex, customizer);\n    });\n\n    /**\n     * The opposite of `_.pick`; this method creates an object composed of the\n     * own and inherited enumerable property paths of `object` that are not omitted.\n     *\n     * **Note:** This method is considerably slower than `_.pick`.\n     *\n     * @static\n     * @since 0.1.0\n     * @memberOf _\n     * @category Object\n     * @param {Object} object The source object.\n     * @param {...(string|string[])} [paths] The property paths to omit.\n     * @returns {Object} Returns the new object.\n     * @example\n     *\n     * var object = { 'a': 1, 'b': '2', 'c': 3 };\n     *\n     * _.omit(object, ['a', 'c']);\n     * // => { 'b': '2' }\n     */\n    var omit = flatRest(function(object, paths) {\n      var result = {};\n      if (object == null) {\n        return result;\n      }\n      var isDeep = false;\n      paths = arrayMap(paths, function(path) {\n        path = castPath(path, object);\n        isDeep || (isDeep = path.length > 1);\n        return path;\n      });\n      copyObject(object, getAllKeysIn(object), result);\n      if (isDeep) {\n        result = baseClone(result, CLONE_DEEP_FLAG | CLONE_FLAT_FLAG | CLONE_SYMBOLS_FLAG, customOmitClone);\n      }\n      var length = paths.length;\n      while (length--) {\n        baseUnset(result, paths[length]);\n      }\n      return result;\n    });\n\n    /**\n     * The opposite of `_.pickBy`; this method creates an object composed of\n     * the own and inherited enumerable string keyed properties of `object` that\n     * `predicate` doesn't return truthy for. The predicate is invoked with two\n     * arguments: (value, key).\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Object\n     * @param {Object} object The source object.\n     * @param {Function} [predicate=_.identity] The function invoked per property.\n     * @returns {Object} Returns the new object.\n     * @example\n     *\n     * var object = { 'a': 1, 'b': '2', 'c': 3 };\n     *\n     * _.omitBy(object, _.isNumber);\n     * // => { 'b': '2' }\n     */\n    function omitBy(object, predicate) {\n      return pickBy(object, negate(getIteratee(predicate)));\n    }\n\n    /**\n     * Creates an object composed of the picked `object` properties.\n     *\n     * @static\n     * @since 0.1.0\n     * @memberOf _\n     * @category Object\n     * @param {Object} object The source object.\n     * @param {...(string|string[])} [paths] The property paths to pick.\n     * @returns {Object} Returns the new object.\n     * @example\n     *\n     * var object = { 'a': 1, 'b': '2', 'c': 3 };\n     *\n     * _.pick(object, ['a', 'c']);\n     * // => { 'a': 1, 'c': 3 }\n     */\n    var pick = flatRest(function(object, paths) {\n      return object == null ? {} : basePick(object, paths);\n    });\n\n    /**\n     * Creates an object composed of the `object` properties `predicate` returns\n     * truthy for. The predicate is invoked with two arguments: (value, key).\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Object\n     * @param {Object} object The source object.\n     * @param {Function} [predicate=_.identity] The function invoked per property.\n     * @returns {Object} Returns the new object.\n     * @example\n     *\n     * var object = { 'a': 1, 'b': '2', 'c': 3 };\n     *\n     * _.pickBy(object, _.isNumber);\n     * // => { 'a': 1, 'c': 3 }\n     */\n    function pickBy(object, predicate) {\n      if (object == null) {\n        return {};\n      }\n      var props = arrayMap(getAllKeysIn(object), function(prop) {\n        return [prop];\n      });\n      predicate = getIteratee(predicate);\n      return basePickBy(object, props, function(value, path) {\n        return predicate(value, path[0]);\n      });\n    }\n\n    /**\n     * This method is like `_.get` except that if the resolved value is a\n     * function it's invoked with the `this` binding of its parent object and\n     * its result is returned.\n     *\n     * @static\n     * @since 0.1.0\n     * @memberOf _\n     * @category Object\n     * @param {Object} object The object to query.\n     * @param {Array|string} path The path of the property to resolve.\n     * @param {*} [defaultValue] The value returned for `undefined` resolved values.\n     * @returns {*} Returns the resolved value.\n     * @example\n     *\n     * var object = { 'a': [{ 'b': { 'c1': 3, 'c2': _.constant(4) } }] };\n     *\n     * _.result(object, 'a[0].b.c1');\n     * // => 3\n     *\n     * _.result(object, 'a[0].b.c2');\n     * // => 4\n     *\n     * _.result(object, 'a[0].b.c3', 'default');\n     * // => 'default'\n     *\n     * _.result(object, 'a[0].b.c3', _.constant('default'));\n     * // => 'default'\n     */\n    function result(object, path, defaultValue) {\n      path = castPath(path, object);\n\n      var index = -1,\n          length = path.length;\n\n      // Ensure the loop is entered when path is empty.\n      if (!length) {\n        length = 1;\n        object = undefined;\n      }\n      while (++index < length) {\n        var value = object == null ? undefined : object[toKey(path[index])];\n        if (value === undefined) {\n          index = length;\n          value = defaultValue;\n        }\n        object = isFunction(value) ? value.call(object) : value;\n      }\n      return object;\n    }\n\n    /**\n     * Sets the value at `path` of `object`. If a portion of `path` doesn't exist,\n     * it's created. Arrays are created for missing index properties while objects\n     * are created for all other missing properties. Use `_.setWith` to customize\n     * `path` creation.\n     *\n     * **Note:** This method mutates `object`.\n     *\n     * @static\n     * @memberOf _\n     * @since 3.7.0\n     * @category Object\n     * @param {Object} object The object to modify.\n     * @param {Array|string} path The path of the property to set.\n     * @param {*} value The value to set.\n     * @returns {Object} Returns `object`.\n     * @example\n     *\n     * var object = { 'a': [{ 'b': { 'c': 3 } }] };\n     *\n     * _.set(object, 'a[0].b.c', 4);\n     * console.log(object.a[0].b.c);\n     * // => 4\n     *\n     * _.set(object, ['x', '0', 'y', 'z'], 5);\n     * console.log(object.x[0].y.z);\n     * // => 5\n     */\n    function set(object, path, value) {\n      return object == null ? object : baseSet(object, path, value);\n    }\n\n    /**\n     * This method is like `_.set` except that it accepts `customizer` which is\n     * invoked to produce the objects of `path`.  If `customizer` returns `undefined`\n     * path creation is handled by the method instead. The `customizer` is invoked\n     * with three arguments: (nsValue, key, nsObject).\n     *\n     * **Note:** This method mutates `object`.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Object\n     * @param {Object} object The object to modify.\n     * @param {Array|string} path The path of the property to set.\n     * @param {*} value The value to set.\n     * @param {Function} [customizer] The function to customize assigned values.\n     * @returns {Object} Returns `object`.\n     * @example\n     *\n     * var object = {};\n     *\n     * _.setWith(object, '[0][1]', 'a', Object);\n     * // => { '0': { '1': 'a' } }\n     */\n    function setWith(object, path, value, customizer) {\n      customizer = typeof customizer == 'function' ? customizer : undefined;\n      return object == null ? object : baseSet(object, path, value, customizer);\n    }\n\n    /**\n     * Creates an array of own enumerable string keyed-value pairs for `object`\n     * which can be consumed by `_.fromPairs`. If `object` is a map or set, its\n     * entries are returned.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @alias entries\n     * @category Object\n     * @param {Object} object The object to query.\n     * @returns {Array} Returns the key-value pairs.\n     * @example\n     *\n     * function Foo() {\n     *   this.a = 1;\n     *   this.b = 2;\n     * }\n     *\n     * Foo.prototype.c = 3;\n     *\n     * _.toPairs(new Foo);\n     * // => [['a', 1], ['b', 2]] (iteration order is not guaranteed)\n     */\n    var toPairs = createToPairs(keys);\n\n    /**\n     * Creates an array of own and inherited enumerable string keyed-value pairs\n     * for `object` which can be consumed by `_.fromPairs`. If `object` is a map\n     * or set, its entries are returned.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @alias entriesIn\n     * @category Object\n     * @param {Object} object The object to query.\n     * @returns {Array} Returns the key-value pairs.\n     * @example\n     *\n     * function Foo() {\n     *   this.a = 1;\n     *   this.b = 2;\n     * }\n     *\n     * Foo.prototype.c = 3;\n     *\n     * _.toPairsIn(new Foo);\n     * // => [['a', 1], ['b', 2], ['c', 3]] (iteration order is not guaranteed)\n     */\n    var toPairsIn = createToPairs(keysIn);\n\n    /**\n     * An alternative to `_.reduce`; this method transforms `object` to a new\n     * `accumulator` object which is the result of running each of its own\n     * enumerable string keyed properties thru `iteratee`, with each invocation\n     * potentially mutating the `accumulator` object. If `accumulator` is not\n     * provided, a new object with the same `[[Prototype]]` will be used. The\n     * iteratee is invoked with four arguments: (accumulator, value, key, object).\n     * Iteratee functions may exit iteration early by explicitly returning `false`.\n     *\n     * @static\n     * @memberOf _\n     * @since 1.3.0\n     * @category Object\n     * @param {Object} object The object to iterate over.\n     * @param {Function} [iteratee=_.identity] The function invoked per iteration.\n     * @param {*} [accumulator] The custom accumulator value.\n     * @returns {*} Returns the accumulated value.\n     * @example\n     *\n     * _.transform([2, 3, 4], function(result, n) {\n     *   result.push(n *= n);\n     *   return n % 2 == 0;\n     * }, []);\n     * // => [4, 9]\n     *\n     * _.transform({ 'a': 1, 'b': 2, 'c': 1 }, function(result, value, key) {\n     *   (result[value] || (result[value] = [])).push(key);\n     * }, {});\n     * // => { '1': ['a', 'c'], '2': ['b'] }\n     */\n    function transform(object, iteratee, accumulator) {\n      var isArr = isArray(object),\n          isArrLike = isArr || isBuffer(object) || isTypedArray(object);\n\n      iteratee = getIteratee(iteratee, 4);\n      if (accumulator == null) {\n        var Ctor = object && object.constructor;\n        if (isArrLike) {\n          accumulator = isArr ? new Ctor : [];\n        }\n        else if (isObject(object)) {\n          accumulator = isFunction(Ctor) ? baseCreate(getPrototype(object)) : {};\n        }\n        else {\n          accumulator = {};\n        }\n      }\n      (isArrLike ? arrayEach : baseForOwn)(object, function(value, index, object) {\n        return iteratee(accumulator, value, index, object);\n      });\n      return accumulator;\n    }\n\n    /**\n     * Removes the property at `path` of `object`.\n     *\n     * **Note:** This method mutates `object`.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Object\n     * @param {Object} object The object to modify.\n     * @param {Array|string} path The path of the property to unset.\n     * @returns {boolean} Returns `true` if the property is deleted, else `false`.\n     * @example\n     *\n     * var object = { 'a': [{ 'b': { 'c': 7 } }] };\n     * _.unset(object, 'a[0].b.c');\n     * // => true\n     *\n     * console.log(object);\n     * // => { 'a': [{ 'b': {} }] };\n     *\n     * _.unset(object, ['a', '0', 'b', 'c']);\n     * // => true\n     *\n     * console.log(object);\n     * // => { 'a': [{ 'b': {} }] };\n     */\n    function unset(object, path) {\n      return object == null ? true : baseUnset(object, path);\n    }\n\n    /**\n     * This method is like `_.set` except that accepts `updater` to produce the\n     * value to set. Use `_.updateWith` to customize `path` creation. The `updater`\n     * is invoked with one argument: (value).\n     *\n     * **Note:** This method mutates `object`.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.6.0\n     * @category Object\n     * @param {Object} object The object to modify.\n     * @param {Array|string} path The path of the property to set.\n     * @param {Function} updater The function to produce the updated value.\n     * @returns {Object} Returns `object`.\n     * @example\n     *\n     * var object = { 'a': [{ 'b': { 'c': 3 } }] };\n     *\n     * _.update(object, 'a[0].b.c', function(n) { return n * n; });\n     * console.log(object.a[0].b.c);\n     * // => 9\n     *\n     * _.update(object, 'x[0].y.z', function(n) { return n ? n + 1 : 0; });\n     * console.log(object.x[0].y.z);\n     * // => 0\n     */\n    function update(object, path, updater) {\n      return object == null ? object : baseUpdate(object, path, castFunction(updater));\n    }\n\n    /**\n     * This method is like `_.update` except that it accepts `customizer` which is\n     * invoked to produce the objects of `path`.  If `customizer` returns `undefined`\n     * path creation is handled by the method instead. The `customizer` is invoked\n     * with three arguments: (nsValue, key, nsObject).\n     *\n     * **Note:** This method mutates `object`.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.6.0\n     * @category Object\n     * @param {Object} object The object to modify.\n     * @param {Array|string} path The path of the property to set.\n     * @param {Function} updater The function to produce the updated value.\n     * @param {Function} [customizer] The function to customize assigned values.\n     * @returns {Object} Returns `object`.\n     * @example\n     *\n     * var object = {};\n     *\n     * _.updateWith(object, '[0][1]', _.constant('a'), Object);\n     * // => { '0': { '1': 'a' } }\n     */\n    function updateWith(object, path, updater, customizer) {\n      customizer = typeof customizer == 'function' ? customizer : undefined;\n      return object == null ? object : baseUpdate(object, path, castFunction(updater), customizer);\n    }\n\n    /**\n     * Creates an array of the own enumerable string keyed property values of `object`.\n     *\n     * **Note:** Non-object values are coerced to objects.\n     *\n     * @static\n     * @since 0.1.0\n     * @memberOf _\n     * @category Object\n     * @param {Object} object The object to query.\n     * @returns {Array} Returns the array of property values.\n     * @example\n     *\n     * function Foo() {\n     *   this.a = 1;\n     *   this.b = 2;\n     * }\n     *\n     * Foo.prototype.c = 3;\n     *\n     * _.values(new Foo);\n     * // => [1, 2] (iteration order is not guaranteed)\n     *\n     * _.values('hi');\n     * // => ['h', 'i']\n     */\n    function values(object) {\n      return object == null ? [] : baseValues(object, keys(object));\n    }\n\n    /**\n     * Creates an array of the own and inherited enumerable string keyed property\n     * values of `object`.\n     *\n     * **Note:** Non-object values are coerced to objects.\n     *\n     * @static\n     * @memberOf _\n     * @since 3.0.0\n     * @category Object\n     * @param {Object} object The object to query.\n     * @returns {Array} Returns the array of property values.\n     * @example\n     *\n     * function Foo() {\n     *   this.a = 1;\n     *   this.b = 2;\n     * }\n     *\n     * Foo.prototype.c = 3;\n     *\n     * _.valuesIn(new Foo);\n     * // => [1, 2, 3] (iteration order is not guaranteed)\n     */\n    function valuesIn(object) {\n      return object == null ? [] : baseValues(object, keysIn(object));\n    }\n\n    /*------------------------------------------------------------------------*/\n\n    /**\n     * Clamps `number` within the inclusive `lower` and `upper` bounds.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Number\n     * @param {number} number The number to clamp.\n     * @param {number} [lower] The lower bound.\n     * @param {number} upper The upper bound.\n     * @returns {number} Returns the clamped number.\n     * @example\n     *\n     * _.clamp(-10, -5, 5);\n     * // => -5\n     *\n     * _.clamp(10, -5, 5);\n     * // => 5\n     */\n    function clamp(number, lower, upper) {\n      if (upper === undefined) {\n        upper = lower;\n        lower = undefined;\n      }\n      if (upper !== undefined) {\n        upper = toNumber(upper);\n        upper = upper === upper ? upper : 0;\n      }\n      if (lower !== undefined) {\n        lower = toNumber(lower);\n        lower = lower === lower ? lower : 0;\n      }\n      return baseClamp(toNumber(number), lower, upper);\n    }\n\n    /**\n     * Checks if `n` is between `start` and up to, but not including, `end`. If\n     * `end` is not specified, it's set to `start` with `start` then set to `0`.\n     * If `start` is greater than `end` the params are swapped to support\n     * negative ranges.\n     *\n     * @static\n     * @memberOf _\n     * @since 3.3.0\n     * @category Number\n     * @param {number} number The number to check.\n     * @param {number} [start=0] The start of the range.\n     * @param {number} end The end of the range.\n     * @returns {boolean} Returns `true` if `number` is in the range, else `false`.\n     * @see _.range, _.rangeRight\n     * @example\n     *\n     * _.inRange(3, 2, 4);\n     * // => true\n     *\n     * _.inRange(4, 8);\n     * // => true\n     *\n     * _.inRange(4, 2);\n     * // => false\n     *\n     * _.inRange(2, 2);\n     * // => false\n     *\n     * _.inRange(1.2, 2);\n     * // => true\n     *\n     * _.inRange(5.2, 4);\n     * // => false\n     *\n     * _.inRange(-3, -2, -6);\n     * // => true\n     */\n    function inRange(number, start, end) {\n      start = toFinite(start);\n      if (end === undefined) {\n        end = start;\n        start = 0;\n      } else {\n        end = toFinite(end);\n      }\n      number = toNumber(number);\n      return baseInRange(number, start, end);\n    }\n\n    /**\n     * Produces a random number between the inclusive `lower` and `upper` bounds.\n     * If only one argument is provided a number between `0` and the given number\n     * is returned. If `floating` is `true`, or either `lower` or `upper` are\n     * floats, a floating-point number is returned instead of an integer.\n     *\n     * **Note:** JavaScript follows the IEEE-754 standard for resolving\n     * floating-point values which can produce unexpected results.\n     *\n     * @static\n     * @memberOf _\n     * @since 0.7.0\n     * @category Number\n     * @param {number} [lower=0] The lower bound.\n     * @param {number} [upper=1] The upper bound.\n     * @param {boolean} [floating] Specify returning a floating-point number.\n     * @returns {number} Returns the random number.\n     * @example\n     *\n     * _.random(0, 5);\n     * // => an integer between 0 and 5\n     *\n     * _.random(5);\n     * // => also an integer between 0 and 5\n     *\n     * _.random(5, true);\n     * // => a floating-point number between 0 and 5\n     *\n     * _.random(1.2, 5.2);\n     * // => a floating-point number between 1.2 and 5.2\n     */\n    function random(lower, upper, floating) {\n      if (floating && typeof floating != 'boolean' && isIterateeCall(lower, upper, floating)) {\n        upper = floating = undefined;\n      }\n      if (floating === undefined) {\n        if (typeof upper == 'boolean') {\n          floating = upper;\n          upper = undefined;\n        }\n        else if (typeof lower == 'boolean') {\n          floating = lower;\n          lower = undefined;\n        }\n      }\n      if (lower === undefined && upper === undefined) {\n        lower = 0;\n        upper = 1;\n      }\n      else {\n        lower = toFinite(lower);\n        if (upper === undefined) {\n          upper = lower;\n          lower = 0;\n        } else {\n          upper = toFinite(upper);\n        }\n      }\n      if (lower > upper) {\n        var temp = lower;\n        lower = upper;\n        upper = temp;\n      }\n      if (floating || lower % 1 || upper % 1) {\n        var rand = nativeRandom();\n        return nativeMin(lower + (rand * (upper - lower + freeParseFloat('1e-' + ((rand + '').length - 1)))), upper);\n      }\n      return baseRandom(lower, upper);\n    }\n\n    /*------------------------------------------------------------------------*/\n\n    /**\n     * Converts `string` to [camel case](https://en.wikipedia.org/wiki/CamelCase).\n     *\n     * @static\n     * @memberOf _\n     * @since 3.0.0\n     * @category String\n     * @param {string} [string=''] The string to convert.\n     * @returns {string} Returns the camel cased string.\n     * @example\n     *\n     * _.camelCase('Foo Bar');\n     * // => 'fooBar'\n     *\n     * _.camelCase('--foo-bar--');\n     * // => 'fooBar'\n     *\n     * _.camelCase('__FOO_BAR__');\n     * // => 'fooBar'\n     */\n    var camelCase = createCompounder(function(result, word, index) {\n      word = word.toLowerCase();\n      return result + (index ? capitalize(word) : word);\n    });\n\n    /**\n     * Converts the first character of `string` to upper case and the remaining\n     * to lower case.\n     *\n     * @static\n     * @memberOf _\n     * @since 3.0.0\n     * @category String\n     * @param {string} [string=''] The string to capitalize.\n     * @returns {string} Returns the capitalized string.\n     * @example\n     *\n     * _.capitalize('FRED');\n     * // => 'Fred'\n     */\n    function capitalize(string) {\n      return upperFirst(toString(string).toLowerCase());\n    }\n\n    /**\n     * Deburrs `string` by converting\n     * [Latin-1 Supplement](https://en.wikipedia.org/wiki/Latin-1_Supplement_(Unicode_block)#Character_table)\n     * and [Latin Extended-A](https://en.wikipedia.org/wiki/Latin_Extended-A)\n     * letters to basic Latin letters and removing\n     * [combining diacritical marks](https://en.wikipedia.org/wiki/Combining_Diacritical_Marks).\n     *\n     * @static\n     * @memberOf _\n     * @since 3.0.0\n     * @category String\n     * @param {string} [string=''] The string to deburr.\n     * @returns {string} Returns the deburred string.\n     * @example\n     *\n     * _.deburr('déjà vu');\n     * // => 'deja vu'\n     */\n    function deburr(string) {\n      string = toString(string);\n      return string && string.replace(reLatin, deburrLetter).replace(reComboMark, '');\n    }\n\n    /**\n     * Checks if `string` ends with the given target string.\n     *\n     * @static\n     * @memberOf _\n     * @since 3.0.0\n     * @category String\n     * @param {string} [string=''] The string to inspect.\n     * @param {string} [target] The string to search for.\n     * @param {number} [position=string.length] The position to search up to.\n     * @returns {boolean} Returns `true` if `string` ends with `target`,\n     *  else `false`.\n     * @example\n     *\n     * _.endsWith('abc', 'c');\n     * // => true\n     *\n     * _.endsWith('abc', 'b');\n     * // => false\n     *\n     * _.endsWith('abc', 'b', 2);\n     * // => true\n     */\n    function endsWith(string, target, position) {\n      string = toString(string);\n      target = baseToString(target);\n\n      var length = string.length;\n      position = position === undefined\n        ? length\n        : baseClamp(toInteger(position), 0, length);\n\n      var end = position;\n      position -= target.length;\n      return position >= 0 && string.slice(position, end) == target;\n    }\n\n    /**\n     * Converts the characters \"&\", \"<\", \">\", '\"', and \"'\" in `string` to their\n     * corresponding HTML entities.\n     *\n     * **Note:** No other characters are escaped. To escape additional\n     * characters use a third-party library like [_he_](https://mths.be/he).\n     *\n     * Though the \">\" character is escaped for symmetry, characters like\n     * \">\" and \"/\" don't need escaping in HTML and have no special meaning\n     * unless they're part of a tag or unquoted attribute value. See\n     * [Mathias Bynens's article](https://mathiasbynens.be/notes/ambiguous-ampersands)\n     * (under \"semi-related fun fact\") for more details.\n     *\n     * When working with HTML you should always\n     * [quote attribute values](http://wonko.com/post/html-escaping) to reduce\n     * XSS vectors.\n     *\n     * @static\n     * @since 0.1.0\n     * @memberOf _\n     * @category String\n     * @param {string} [string=''] The string to escape.\n     * @returns {string} Returns the escaped string.\n     * @example\n     *\n     * _.escape('fred, barney, & pebbles');\n     * // => 'fred, barney, &amp; pebbles'\n     */\n    function escape(string) {\n      string = toString(string);\n      return (string && reHasUnescapedHtml.test(string))\n        ? string.replace(reUnescapedHtml, escapeHtmlChar)\n        : string;\n    }\n\n    /**\n     * Escapes the `RegExp` special characters \"^\", \"$\", \"\\\", \".\", \"*\", \"+\",\n     * \"?\", \"(\", \")\", \"[\", \"]\", \"{\", \"}\", and \"|\" in `string`.\n     *\n     * @static\n     * @memberOf _\n     * @since 3.0.0\n     * @category String\n     * @param {string} [string=''] The string to escape.\n     * @returns {string} Returns the escaped string.\n     * @example\n     *\n     * _.escapeRegExp('[lodash](https://lodash.com/)');\n     * // => '\\[lodash\\]\\(https://lodash\\.com/\\)'\n     */\n    function escapeRegExp(string) {\n      string = toString(string);\n      return (string && reHasRegExpChar.test(string))\n        ? string.replace(reRegExpChar, '\\\\$&')\n        : string;\n    }\n\n    /**\n     * Converts `string` to\n     * [kebab case](https://en.wikipedia.org/wiki/Letter_case#Special_case_styles).\n     *\n     * @static\n     * @memberOf _\n     * @since 3.0.0\n     * @category String\n     * @param {string} [string=''] The string to convert.\n     * @returns {string} Returns the kebab cased string.\n     * @example\n     *\n     * _.kebabCase('Foo Bar');\n     * // => 'foo-bar'\n     *\n     * _.kebabCase('fooBar');\n     * // => 'foo-bar'\n     *\n     * _.kebabCase('__FOO_BAR__');\n     * // => 'foo-bar'\n     */\n    var kebabCase = createCompounder(function(result, word, index) {\n      return result + (index ? '-' : '') + word.toLowerCase();\n    });\n\n    /**\n     * Converts `string`, as space separated words, to lower case.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category String\n     * @param {string} [string=''] The string to convert.\n     * @returns {string} Returns the lower cased string.\n     * @example\n     *\n     * _.lowerCase('--Foo-Bar--');\n     * // => 'foo bar'\n     *\n     * _.lowerCase('fooBar');\n     * // => 'foo bar'\n     *\n     * _.lowerCase('__FOO_BAR__');\n     * // => 'foo bar'\n     */\n    var lowerCase = createCompounder(function(result, word, index) {\n      return result + (index ? ' ' : '') + word.toLowerCase();\n    });\n\n    /**\n     * Converts the first character of `string` to lower case.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category String\n     * @param {string} [string=''] The string to convert.\n     * @returns {string} Returns the converted string.\n     * @example\n     *\n     * _.lowerFirst('Fred');\n     * // => 'fred'\n     *\n     * _.lowerFirst('FRED');\n     * // => 'fRED'\n     */\n    var lowerFirst = createCaseFirst('toLowerCase');\n\n    /**\n     * Pads `string` on the left and right sides if it's shorter than `length`.\n     * Padding characters are truncated if they can't be evenly divided by `length`.\n     *\n     * @static\n     * @memberOf _\n     * @since 3.0.0\n     * @category String\n     * @param {string} [string=''] The string to pad.\n     * @param {number} [length=0] The padding length.\n     * @param {string} [chars=' '] The string used as padding.\n     * @returns {string} Returns the padded string.\n     * @example\n     *\n     * _.pad('abc', 8);\n     * // => '  abc   '\n     *\n     * _.pad('abc', 8, '_-');\n     * // => '_-abc_-_'\n     *\n     * _.pad('abc', 3);\n     * // => 'abc'\n     */\n    function pad(string, length, chars) {\n      string = toString(string);\n      length = toInteger(length);\n\n      var strLength = length ? stringSize(string) : 0;\n      if (!length || strLength >= length) {\n        return string;\n      }\n      var mid = (length - strLength) / 2;\n      return (\n        createPadding(nativeFloor(mid), chars) +\n        string +\n        createPadding(nativeCeil(mid), chars)\n      );\n    }\n\n    /**\n     * Pads `string` on the right side if it's shorter than `length`. Padding\n     * characters are truncated if they exceed `length`.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category String\n     * @param {string} [string=''] The string to pad.\n     * @param {number} [length=0] The padding length.\n     * @param {string} [chars=' '] The string used as padding.\n     * @returns {string} Returns the padded string.\n     * @example\n     *\n     * _.padEnd('abc', 6);\n     * // => 'abc   '\n     *\n     * _.padEnd('abc', 6, '_-');\n     * // => 'abc_-_'\n     *\n     * _.padEnd('abc', 3);\n     * // => 'abc'\n     */\n    function padEnd(string, length, chars) {\n      string = toString(string);\n      length = toInteger(length);\n\n      var strLength = length ? stringSize(string) : 0;\n      return (length && strLength < length)\n        ? (string + createPadding(length - strLength, chars))\n        : string;\n    }\n\n    /**\n     * Pads `string` on the left side if it's shorter than `length`. Padding\n     * characters are truncated if they exceed `length`.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category String\n     * @param {string} [string=''] The string to pad.\n     * @param {number} [length=0] The padding length.\n     * @param {string} [chars=' '] The string used as padding.\n     * @returns {string} Returns the padded string.\n     * @example\n     *\n     * _.padStart('abc', 6);\n     * // => '   abc'\n     *\n     * _.padStart('abc', 6, '_-');\n     * // => '_-_abc'\n     *\n     * _.padStart('abc', 3);\n     * // => 'abc'\n     */\n    function padStart(string, length, chars) {\n      string = toString(string);\n      length = toInteger(length);\n\n      var strLength = length ? stringSize(string) : 0;\n      return (length && strLength < length)\n        ? (createPadding(length - strLength, chars) + string)\n        : string;\n    }\n\n    /**\n     * Converts `string` to an integer of the specified radix. If `radix` is\n     * `undefined` or `0`, a `radix` of `10` is used unless `value` is a\n     * hexadecimal, in which case a `radix` of `16` is used.\n     *\n     * **Note:** This method aligns with the\n     * [ES5 implementation](https://es5.github.io/#x15.1.2.2) of `parseInt`.\n     *\n     * @static\n     * @memberOf _\n     * @since 1.1.0\n     * @category String\n     * @param {string} string The string to convert.\n     * @param {number} [radix=10] The radix to interpret `value` by.\n     * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.\n     * @returns {number} Returns the converted integer.\n     * @example\n     *\n     * _.parseInt('08');\n     * // => 8\n     *\n     * _.map(['6', '08', '10'], _.parseInt);\n     * // => [6, 8, 10]\n     */\n    function parseInt(string, radix, guard) {\n      if (guard || radix == null) {\n        radix = 0;\n      } else if (radix) {\n        radix = +radix;\n      }\n      return nativeParseInt(toString(string).replace(reTrimStart, ''), radix || 0);\n    }\n\n    /**\n     * Repeats the given string `n` times.\n     *\n     * @static\n     * @memberOf _\n     * @since 3.0.0\n     * @category String\n     * @param {string} [string=''] The string to repeat.\n     * @param {number} [n=1] The number of times to repeat the string.\n     * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.\n     * @returns {string} Returns the repeated string.\n     * @example\n     *\n     * _.repeat('*', 3);\n     * // => '***'\n     *\n     * _.repeat('abc', 2);\n     * // => 'abcabc'\n     *\n     * _.repeat('abc', 0);\n     * // => ''\n     */\n    function repeat(string, n, guard) {\n      if ((guard ? isIterateeCall(string, n, guard) : n === undefined)) {\n        n = 1;\n      } else {\n        n = toInteger(n);\n      }\n      return baseRepeat(toString(string), n);\n    }\n\n    /**\n     * Replaces matches for `pattern` in `string` with `replacement`.\n     *\n     * **Note:** This method is based on\n     * [`String#replace`](https://mdn.io/String/replace).\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category String\n     * @param {string} [string=''] The string to modify.\n     * @param {RegExp|string} pattern The pattern to replace.\n     * @param {Function|string} replacement The match replacement.\n     * @returns {string} Returns the modified string.\n     * @example\n     *\n     * _.replace('Hi Fred', 'Fred', 'Barney');\n     * // => 'Hi Barney'\n     */\n    function replace() {\n      var args = arguments,\n          string = toString(args[0]);\n\n      return args.length < 3 ? string : string.replace(args[1], args[2]);\n    }\n\n    /**\n     * Converts `string` to\n     * [snake case](https://en.wikipedia.org/wiki/Snake_case).\n     *\n     * @static\n     * @memberOf _\n     * @since 3.0.0\n     * @category String\n     * @param {string} [string=''] The string to convert.\n     * @returns {string} Returns the snake cased string.\n     * @example\n     *\n     * _.snakeCase('Foo Bar');\n     * // => 'foo_bar'\n     *\n     * _.snakeCase('fooBar');\n     * // => 'foo_bar'\n     *\n     * _.snakeCase('--FOO-BAR--');\n     * // => 'foo_bar'\n     */\n    var snakeCase = createCompounder(function(result, word, index) {\n      return result + (index ? '_' : '') + word.toLowerCase();\n    });\n\n    /**\n     * Splits `string` by `separator`.\n     *\n     * **Note:** This method is based on\n     * [`String#split`](https://mdn.io/String/split).\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category String\n     * @param {string} [string=''] The string to split.\n     * @param {RegExp|string} separator The separator pattern to split by.\n     * @param {number} [limit] The length to truncate results to.\n     * @returns {Array} Returns the string segments.\n     * @example\n     *\n     * _.split('a-b-c', '-', 2);\n     * // => ['a', 'b']\n     */\n    function split(string, separator, limit) {\n      if (limit && typeof limit != 'number' && isIterateeCall(string, separator, limit)) {\n        separator = limit = undefined;\n      }\n      limit = limit === undefined ? MAX_ARRAY_LENGTH : limit >>> 0;\n      if (!limit) {\n        return [];\n      }\n      string = toString(string);\n      if (string && (\n            typeof separator == 'string' ||\n            (separator != null && !isRegExp(separator))\n          )) {\n        separator = baseToString(separator);\n        if (!separator && hasUnicode(string)) {\n          return castSlice(stringToArray(string), 0, limit);\n        }\n      }\n      return string.split(separator, limit);\n    }\n\n    /**\n     * Converts `string` to\n     * [start case](https://en.wikipedia.org/wiki/Letter_case#Stylistic_or_specialised_usage).\n     *\n     * @static\n     * @memberOf _\n     * @since 3.1.0\n     * @category String\n     * @param {string} [string=''] The string to convert.\n     * @returns {string} Returns the start cased string.\n     * @example\n     *\n     * _.startCase('--foo-bar--');\n     * // => 'Foo Bar'\n     *\n     * _.startCase('fooBar');\n     * // => 'Foo Bar'\n     *\n     * _.startCase('__FOO_BAR__');\n     * // => 'FOO BAR'\n     */\n    var startCase = createCompounder(function(result, word, index) {\n      return result + (index ? ' ' : '') + upperFirst(word);\n    });\n\n    /**\n     * Checks if `string` starts with the given target string.\n     *\n     * @static\n     * @memberOf _\n     * @since 3.0.0\n     * @category String\n     * @param {string} [string=''] The string to inspect.\n     * @param {string} [target] The string to search for.\n     * @param {number} [position=0] The position to search from.\n     * @returns {boolean} Returns `true` if `string` starts with `target`,\n     *  else `false`.\n     * @example\n     *\n     * _.startsWith('abc', 'a');\n     * // => true\n     *\n     * _.startsWith('abc', 'b');\n     * // => false\n     *\n     * _.startsWith('abc', 'b', 1);\n     * // => true\n     */\n    function startsWith(string, target, position) {\n      string = toString(string);\n      position = position == null\n        ? 0\n        : baseClamp(toInteger(position), 0, string.length);\n\n      target = baseToString(target);\n      return string.slice(position, position + target.length) == target;\n    }\n\n    /**\n     * Creates a compiled template function that can interpolate data properties\n     * in \"interpolate\" delimiters, HTML-escape interpolated data properties in\n     * \"escape\" delimiters, and execute JavaScript in \"evaluate\" delimiters. Data\n     * properties may be accessed as free variables in the template. If a setting\n     * object is given, it takes precedence over `_.templateSettings` values.\n     *\n     * **Note:** In the development build `_.template` utilizes\n     * [sourceURLs](http://www.html5rocks.com/en/tutorials/developertools/sourcemaps/#toc-sourceurl)\n     * for easier debugging.\n     *\n     * For more information on precompiling templates see\n     * [lodash's custom builds documentation](https://lodash.com/custom-builds).\n     *\n     * For more information on Chrome extension sandboxes see\n     * [Chrome's extensions documentation](https://developer.chrome.com/extensions/sandboxingEval).\n     *\n     * @static\n     * @since 0.1.0\n     * @memberOf _\n     * @category String\n     * @param {string} [string=''] The template string.\n     * @param {Object} [options={}] The options object.\n     * @param {RegExp} [options.escape=_.templateSettings.escape]\n     *  The HTML \"escape\" delimiter.\n     * @param {RegExp} [options.evaluate=_.templateSettings.evaluate]\n     *  The \"evaluate\" delimiter.\n     * @param {Object} [options.imports=_.templateSettings.imports]\n     *  An object to import into the template as free variables.\n     * @param {RegExp} [options.interpolate=_.templateSettings.interpolate]\n     *  The \"interpolate\" delimiter.\n     * @param {string} [options.sourceURL='lodash.templateSources[n]']\n     *  The sourceURL of the compiled template.\n     * @param {string} [options.variable='obj']\n     *  The data object variable name.\n     * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.\n     * @returns {Function} Returns the compiled template function.\n     * @example\n     *\n     * // Use the \"interpolate\" delimiter to create a compiled template.\n     * var compiled = _.template('hello <%= user %>!');\n     * compiled({ 'user': 'fred' });\n     * // => 'hello fred!'\n     *\n     * // Use the HTML \"escape\" delimiter to escape data property values.\n     * var compiled = _.template('<b><%- value %></b>');\n     * compiled({ 'value': '<script>' });\n     * // => '<b>&lt;script&gt;</b>'\n     *\n     * // Use the \"evaluate\" delimiter to execute JavaScript and generate HTML.\n     * var compiled = _.template('<% _.forEach(users, function(user) { %><li><%- user %></li><% }); %>');\n     * compiled({ 'users': ['fred', 'barney'] });\n     * // => '<li>fred</li><li>barney</li>'\n     *\n     * // Use the internal `print` function in \"evaluate\" delimiters.\n     * var compiled = _.template('<% print(\"hello \" + user); %>!');\n     * compiled({ 'user': 'barney' });\n     * // => 'hello barney!'\n     *\n     * // Use the ES template literal delimiter as an \"interpolate\" delimiter.\n     * // Disable support by replacing the \"interpolate\" delimiter.\n     * var compiled = _.template('hello ${ user }!');\n     * compiled({ 'user': 'pebbles' });\n     * // => 'hello pebbles!'\n     *\n     * // Use backslashes to treat delimiters as plain text.\n     * var compiled = _.template('<%= \"\\\\<%- value %\\\\>\" %>');\n     * compiled({ 'value': 'ignored' });\n     * // => '<%- value %>'\n     *\n     * // Use the `imports` option to import `jQuery` as `jq`.\n     * var text = '<% jq.each(users, function(user) { %><li><%- user %></li><% }); %>';\n     * var compiled = _.template(text, { 'imports': { 'jq': jQuery } });\n     * compiled({ 'users': ['fred', 'barney'] });\n     * // => '<li>fred</li><li>barney</li>'\n     *\n     * // Use the `sourceURL` option to specify a custom sourceURL for the template.\n     * var compiled = _.template('hello <%= user %>!', { 'sourceURL': '/basic/greeting.jst' });\n     * compiled(data);\n     * // => Find the source of \"greeting.jst\" under the Sources tab or Resources panel of the web inspector.\n     *\n     * // Use the `variable` option to ensure a with-statement isn't used in the compiled template.\n     * var compiled = _.template('hi <%= data.user %>!', { 'variable': 'data' });\n     * compiled.source;\n     * // => function(data) {\n     * //   var __t, __p = '';\n     * //   __p += 'hi ' + ((__t = ( data.user )) == null ? '' : __t) + '!';\n     * //   return __p;\n     * // }\n     *\n     * // Use custom template delimiters.\n     * _.templateSettings.interpolate = /{{([\\s\\S]+?)}}/g;\n     * var compiled = _.template('hello {{ user }}!');\n     * compiled({ 'user': 'mustache' });\n     * // => 'hello mustache!'\n     *\n     * // Use the `source` property to inline compiled templates for meaningful\n     * // line numbers in error messages and stack traces.\n     * fs.writeFileSync(path.join(process.cwd(), 'jst.js'), '\\\n     *   var JST = {\\\n     *     \"main\": ' + _.template(mainText).source + '\\\n     *   };\\\n     * ');\n     */\n    function template(string, options, guard) {\n      // Based on John Resig's `tmpl` implementation\n      // (http://ejohn.org/blog/javascript-micro-templating/)\n      // and Laura Doktorova's doT.js (https://github.com/olado/doT).\n      var settings = lodash.templateSettings;\n\n      if (guard && isIterateeCall(string, options, guard)) {\n        options = undefined;\n      }\n      string = toString(string);\n      options = assignInWith({}, options, settings, customDefaultsAssignIn);\n\n      var imports = assignInWith({}, options.imports, settings.imports, customDefaultsAssignIn),\n          importsKeys = keys(imports),\n          importsValues = baseValues(imports, importsKeys);\n\n      var isEscaping,\n          isEvaluating,\n          index = 0,\n          interpolate = options.interpolate || reNoMatch,\n          source = \"__p += '\";\n\n      // Compile the regexp to match each delimiter.\n      var reDelimiters = RegExp(\n        (options.escape || reNoMatch).source + '|' +\n        interpolate.source + '|' +\n        (interpolate === reInterpolate ? reEsTemplate : reNoMatch).source + '|' +\n        (options.evaluate || reNoMatch).source + '|$'\n      , 'g');\n\n      // Use a sourceURL for easier debugging.\n      // The sourceURL gets injected into the source that's eval-ed, so be careful\n      // to normalize all kinds of whitespace, so e.g. newlines (and unicode versions of it) can't sneak in\n      // and escape the comment, thus injecting code that gets evaled.\n      var sourceURL = '//# sourceURL=' +\n        (hasOwnProperty.call(options, 'sourceURL')\n          ? (options.sourceURL + '').replace(/\\s/g, ' ')\n          : ('lodash.templateSources[' + (++templateCounter) + ']')\n        ) + '\\n';\n\n      string.replace(reDelimiters, function(match, escapeValue, interpolateValue, esTemplateValue, evaluateValue, offset) {\n        interpolateValue || (interpolateValue = esTemplateValue);\n\n        // Escape characters that can't be included in string literals.\n        source += string.slice(index, offset).replace(reUnescapedString, escapeStringChar);\n\n        // Replace delimiters with snippets.\n        if (escapeValue) {\n          isEscaping = true;\n          source += \"' +\\n__e(\" + escapeValue + \") +\\n'\";\n        }\n        if (evaluateValue) {\n          isEvaluating = true;\n          source += \"';\\n\" + evaluateValue + \";\\n__p += '\";\n        }\n        if (interpolateValue) {\n          source += \"' +\\n((__t = (\" + interpolateValue + \")) == null ? '' : __t) +\\n'\";\n        }\n        index = offset + match.length;\n\n        // The JS engine embedded in Adobe products needs `match` returned in\n        // order to produce the correct `offset` value.\n        return match;\n      });\n\n      source += \"';\\n\";\n\n      // If `variable` is not specified wrap a with-statement around the generated\n      // code to add the data object to the top of the scope chain.\n      var variable = hasOwnProperty.call(options, 'variable') && options.variable;\n      if (!variable) {\n        source = 'with (obj) {\\n' + source + '\\n}\\n';\n      }\n      // Throw an error if a forbidden character was found in `variable`, to prevent\n      // potential command injection attacks.\n      else if (reForbiddenIdentifierChars.test(variable)) {\n        throw new Error(INVALID_TEMPL_VAR_ERROR_TEXT);\n      }\n\n      // Cleanup code by stripping empty strings.\n      source = (isEvaluating ? source.replace(reEmptyStringLeading, '') : source)\n        .replace(reEmptyStringMiddle, '$1')\n        .replace(reEmptyStringTrailing, '$1;');\n\n      // Frame code as the function body.\n      source = 'function(' + (variable || 'obj') + ') {\\n' +\n        (variable\n          ? ''\n          : 'obj || (obj = {});\\n'\n        ) +\n        \"var __t, __p = ''\" +\n        (isEscaping\n           ? ', __e = _.escape'\n           : ''\n        ) +\n        (isEvaluating\n          ? ', __j = Array.prototype.join;\\n' +\n            \"function print() { __p += __j.call(arguments, '') }\\n\"\n          : ';\\n'\n        ) +\n        source +\n        'return __p\\n}';\n\n      var result = attempt(function() {\n        return Function(importsKeys, sourceURL + 'return ' + source)\n          .apply(undefined, importsValues);\n      });\n\n      // Provide the compiled function's source by its `toString` method or\n      // the `source` property as a convenience for inlining compiled templates.\n      result.source = source;\n      if (isError(result)) {\n        throw result;\n      }\n      return result;\n    }\n\n    /**\n     * Converts `string`, as a whole, to lower case just like\n     * [String#toLowerCase](https://mdn.io/toLowerCase).\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category String\n     * @param {string} [string=''] The string to convert.\n     * @returns {string} Returns the lower cased string.\n     * @example\n     *\n     * _.toLower('--Foo-Bar--');\n     * // => '--foo-bar--'\n     *\n     * _.toLower('fooBar');\n     * // => 'foobar'\n     *\n     * _.toLower('__FOO_BAR__');\n     * // => '__foo_bar__'\n     */\n    function toLower(value) {\n      return toString(value).toLowerCase();\n    }\n\n    /**\n     * Converts `string`, as a whole, to upper case just like\n     * [String#toUpperCase](https://mdn.io/toUpperCase).\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category String\n     * @param {string} [string=''] The string to convert.\n     * @returns {string} Returns the upper cased string.\n     * @example\n     *\n     * _.toUpper('--foo-bar--');\n     * // => '--FOO-BAR--'\n     *\n     * _.toUpper('fooBar');\n     * // => 'FOOBAR'\n     *\n     * _.toUpper('__foo_bar__');\n     * // => '__FOO_BAR__'\n     */\n    function toUpper(value) {\n      return toString(value).toUpperCase();\n    }\n\n    /**\n     * Removes leading and trailing whitespace or specified characters from `string`.\n     *\n     * @static\n     * @memberOf _\n     * @since 3.0.0\n     * @category String\n     * @param {string} [string=''] The string to trim.\n     * @param {string} [chars=whitespace] The characters to trim.\n     * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.\n     * @returns {string} Returns the trimmed string.\n     * @example\n     *\n     * _.trim('  abc  ');\n     * // => 'abc'\n     *\n     * _.trim('-_-abc-_-', '_-');\n     * // => 'abc'\n     *\n     * _.map(['  foo  ', '  bar  '], _.trim);\n     * // => ['foo', 'bar']\n     */\n    function trim(string, chars, guard) {\n      string = toString(string);\n      if (string && (guard || chars === undefined)) {\n        return baseTrim(string);\n      }\n      if (!string || !(chars = baseToString(chars))) {\n        return string;\n      }\n      var strSymbols = stringToArray(string),\n          chrSymbols = stringToArray(chars),\n          start = charsStartIndex(strSymbols, chrSymbols),\n          end = charsEndIndex(strSymbols, chrSymbols) + 1;\n\n      return castSlice(strSymbols, start, end).join('');\n    }\n\n    /**\n     * Removes trailing whitespace or specified characters from `string`.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category String\n     * @param {string} [string=''] The string to trim.\n     * @param {string} [chars=whitespace] The characters to trim.\n     * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.\n     * @returns {string} Returns the trimmed string.\n     * @example\n     *\n     * _.trimEnd('  abc  ');\n     * // => '  abc'\n     *\n     * _.trimEnd('-_-abc-_-', '_-');\n     * // => '-_-abc'\n     */\n    function trimEnd(string, chars, guard) {\n      string = toString(string);\n      if (string && (guard || chars === undefined)) {\n        return string.slice(0, trimmedEndIndex(string) + 1);\n      }\n      if (!string || !(chars = baseToString(chars))) {\n        return string;\n      }\n      var strSymbols = stringToArray(string),\n          end = charsEndIndex(strSymbols, stringToArray(chars)) + 1;\n\n      return castSlice(strSymbols, 0, end).join('');\n    }\n\n    /**\n     * Removes leading whitespace or specified characters from `string`.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category String\n     * @param {string} [string=''] The string to trim.\n     * @param {string} [chars=whitespace] The characters to trim.\n     * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.\n     * @returns {string} Returns the trimmed string.\n     * @example\n     *\n     * _.trimStart('  abc  ');\n     * // => 'abc  '\n     *\n     * _.trimStart('-_-abc-_-', '_-');\n     * // => 'abc-_-'\n     */\n    function trimStart(string, chars, guard) {\n      string = toString(string);\n      if (string && (guard || chars === undefined)) {\n        return string.replace(reTrimStart, '');\n      }\n      if (!string || !(chars = baseToString(chars))) {\n        return string;\n      }\n      var strSymbols = stringToArray(string),\n          start = charsStartIndex(strSymbols, stringToArray(chars));\n\n      return castSlice(strSymbols, start).join('');\n    }\n\n    /**\n     * Truncates `string` if it's longer than the given maximum string length.\n     * The last characters of the truncated string are replaced with the omission\n     * string which defaults to \"...\".\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category String\n     * @param {string} [string=''] The string to truncate.\n     * @param {Object} [options={}] The options object.\n     * @param {number} [options.length=30] The maximum string length.\n     * @param {string} [options.omission='...'] The string to indicate text is omitted.\n     * @param {RegExp|string} [options.separator] The separator pattern to truncate to.\n     * @returns {string} Returns the truncated string.\n     * @example\n     *\n     * _.truncate('hi-diddly-ho there, neighborino');\n     * // => 'hi-diddly-ho there, neighbo...'\n     *\n     * _.truncate('hi-diddly-ho there, neighborino', {\n     *   'length': 24,\n     *   'separator': ' '\n     * });\n     * // => 'hi-diddly-ho there,...'\n     *\n     * _.truncate('hi-diddly-ho there, neighborino', {\n     *   'length': 24,\n     *   'separator': /,? +/\n     * });\n     * // => 'hi-diddly-ho there...'\n     *\n     * _.truncate('hi-diddly-ho there, neighborino', {\n     *   'omission': ' [...]'\n     * });\n     * // => 'hi-diddly-ho there, neig [...]'\n     */\n    function truncate(string, options) {\n      var length = DEFAULT_TRUNC_LENGTH,\n          omission = DEFAULT_TRUNC_OMISSION;\n\n      if (isObject(options)) {\n        var separator = 'separator' in options ? options.separator : separator;\n        length = 'length' in options ? toInteger(options.length) : length;\n        omission = 'omission' in options ? baseToString(options.omission) : omission;\n      }\n      string = toString(string);\n\n      var strLength = string.length;\n      if (hasUnicode(string)) {\n        var strSymbols = stringToArray(string);\n        strLength = strSymbols.length;\n      }\n      if (length >= strLength) {\n        return string;\n      }\n      var end = length - stringSize(omission);\n      if (end < 1) {\n        return omission;\n      }\n      var result = strSymbols\n        ? castSlice(strSymbols, 0, end).join('')\n        : string.slice(0, end);\n\n      if (separator === undefined) {\n        return result + omission;\n      }\n      if (strSymbols) {\n        end += (result.length - end);\n      }\n      if (isRegExp(separator)) {\n        if (string.slice(end).search(separator)) {\n          var match,\n              substring = result;\n\n          if (!separator.global) {\n            separator = RegExp(separator.source, toString(reFlags.exec(separator)) + 'g');\n          }\n          separator.lastIndex = 0;\n          while ((match = separator.exec(substring))) {\n            var newEnd = match.index;\n          }\n          result = result.slice(0, newEnd === undefined ? end : newEnd);\n        }\n      } else if (string.indexOf(baseToString(separator), end) != end) {\n        var index = result.lastIndexOf(separator);\n        if (index > -1) {\n          result = result.slice(0, index);\n        }\n      }\n      return result + omission;\n    }\n\n    /**\n     * The inverse of `_.escape`; this method converts the HTML entities\n     * `&amp;`, `&lt;`, `&gt;`, `&quot;`, and `&#39;` in `string` to\n     * their corresponding characters.\n     *\n     * **Note:** No other HTML entities are unescaped. To unescape additional\n     * HTML entities use a third-party library like [_he_](https://mths.be/he).\n     *\n     * @static\n     * @memberOf _\n     * @since 0.6.0\n     * @category String\n     * @param {string} [string=''] The string to unescape.\n     * @returns {string} Returns the unescaped string.\n     * @example\n     *\n     * _.unescape('fred, barney, &amp; pebbles');\n     * // => 'fred, barney, & pebbles'\n     */\n    function unescape(string) {\n      string = toString(string);\n      return (string && reHasEscapedHtml.test(string))\n        ? string.replace(reEscapedHtml, unescapeHtmlChar)\n        : string;\n    }\n\n    /**\n     * Converts `string`, as space separated words, to upper case.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category String\n     * @param {string} [string=''] The string to convert.\n     * @returns {string} Returns the upper cased string.\n     * @example\n     *\n     * _.upperCase('--foo-bar');\n     * // => 'FOO BAR'\n     *\n     * _.upperCase('fooBar');\n     * // => 'FOO BAR'\n     *\n     * _.upperCase('__foo_bar__');\n     * // => 'FOO BAR'\n     */\n    var upperCase = createCompounder(function(result, word, index) {\n      return result + (index ? ' ' : '') + word.toUpperCase();\n    });\n\n    /**\n     * Converts the first character of `string` to upper case.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category String\n     * @param {string} [string=''] The string to convert.\n     * @returns {string} Returns the converted string.\n     * @example\n     *\n     * _.upperFirst('fred');\n     * // => 'Fred'\n     *\n     * _.upperFirst('FRED');\n     * // => 'FRED'\n     */\n    var upperFirst = createCaseFirst('toUpperCase');\n\n    /**\n     * Splits `string` into an array of its words.\n     *\n     * @static\n     * @memberOf _\n     * @since 3.0.0\n     * @category String\n     * @param {string} [string=''] The string to inspect.\n     * @param {RegExp|string} [pattern] The pattern to match words.\n     * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.\n     * @returns {Array} Returns the words of `string`.\n     * @example\n     *\n     * _.words('fred, barney, & pebbles');\n     * // => ['fred', 'barney', 'pebbles']\n     *\n     * _.words('fred, barney, & pebbles', /[^, ]+/g);\n     * // => ['fred', 'barney', '&', 'pebbles']\n     */\n    function words(string, pattern, guard) {\n      string = toString(string);\n      pattern = guard ? undefined : pattern;\n\n      if (pattern === undefined) {\n        return hasUnicodeWord(string) ? unicodeWords(string) : asciiWords(string);\n      }\n      return string.match(pattern) || [];\n    }\n\n    /*------------------------------------------------------------------------*/\n\n    /**\n     * Attempts to invoke `func`, returning either the result or the caught error\n     * object. Any additional arguments are provided to `func` when it's invoked.\n     *\n     * @static\n     * @memberOf _\n     * @since 3.0.0\n     * @category Util\n     * @param {Function} func The function to attempt.\n     * @param {...*} [args] The arguments to invoke `func` with.\n     * @returns {*} Returns the `func` result or error object.\n     * @example\n     *\n     * // Avoid throwing errors for invalid selectors.\n     * var elements = _.attempt(function(selector) {\n     *   return document.querySelectorAll(selector);\n     * }, '>_>');\n     *\n     * if (_.isError(elements)) {\n     *   elements = [];\n     * }\n     */\n    var attempt = baseRest(function(func, args) {\n      try {\n        return apply(func, undefined, args);\n      } catch (e) {\n        return isError(e) ? e : new Error(e);\n      }\n    });\n\n    /**\n     * Binds methods of an object to the object itself, overwriting the existing\n     * method.\n     *\n     * **Note:** This method doesn't set the \"length\" property of bound functions.\n     *\n     * @static\n     * @since 0.1.0\n     * @memberOf _\n     * @category Util\n     * @param {Object} object The object to bind and assign the bound methods to.\n     * @param {...(string|string[])} methodNames The object method names to bind.\n     * @returns {Object} Returns `object`.\n     * @example\n     *\n     * var view = {\n     *   'label': 'docs',\n     *   'click': function() {\n     *     console.log('clicked ' + this.label);\n     *   }\n     * };\n     *\n     * _.bindAll(view, ['click']);\n     * jQuery(element).on('click', view.click);\n     * // => Logs 'clicked docs' when clicked.\n     */\n    var bindAll = flatRest(function(object, methodNames) {\n      arrayEach(methodNames, function(key) {\n        key = toKey(key);\n        baseAssignValue(object, key, bind(object[key], object));\n      });\n      return object;\n    });\n\n    /**\n     * Creates a function that iterates over `pairs` and invokes the corresponding\n     * function of the first predicate to return truthy. The predicate-function\n     * pairs are invoked with the `this` binding and arguments of the created\n     * function.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Util\n     * @param {Array} pairs The predicate-function pairs.\n     * @returns {Function} Returns the new composite function.\n     * @example\n     *\n     * var func = _.cond([\n     *   [_.matches({ 'a': 1 }),           _.constant('matches A')],\n     *   [_.conforms({ 'b': _.isNumber }), _.constant('matches B')],\n     *   [_.stubTrue,                      _.constant('no match')]\n     * ]);\n     *\n     * func({ 'a': 1, 'b': 2 });\n     * // => 'matches A'\n     *\n     * func({ 'a': 0, 'b': 1 });\n     * // => 'matches B'\n     *\n     * func({ 'a': '1', 'b': '2' });\n     * // => 'no match'\n     */\n    function cond(pairs) {\n      var length = pairs == null ? 0 : pairs.length,\n          toIteratee = getIteratee();\n\n      pairs = !length ? [] : arrayMap(pairs, function(pair) {\n        if (typeof pair[1] != 'function') {\n          throw new TypeError(FUNC_ERROR_TEXT);\n        }\n        return [toIteratee(pair[0]), pair[1]];\n      });\n\n      return baseRest(function(args) {\n        var index = -1;\n        while (++index < length) {\n          var pair = pairs[index];\n          if (apply(pair[0], this, args)) {\n            return apply(pair[1], this, args);\n          }\n        }\n      });\n    }\n\n    /**\n     * Creates a function that invokes the predicate properties of `source` with\n     * the corresponding property values of a given object, returning `true` if\n     * all predicates return truthy, else `false`.\n     *\n     * **Note:** The created function is equivalent to `_.conformsTo` with\n     * `source` partially applied.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Util\n     * @param {Object} source The object of property predicates to conform to.\n     * @returns {Function} Returns the new spec function.\n     * @example\n     *\n     * var objects = [\n     *   { 'a': 2, 'b': 1 },\n     *   { 'a': 1, 'b': 2 }\n     * ];\n     *\n     * _.filter(objects, _.conforms({ 'b': function(n) { return n > 1; } }));\n     * // => [{ 'a': 1, 'b': 2 }]\n     */\n    function conforms(source) {\n      return baseConforms(baseClone(source, CLONE_DEEP_FLAG));\n    }\n\n    /**\n     * Creates a function that returns `value`.\n     *\n     * @static\n     * @memberOf _\n     * @since 2.4.0\n     * @category Util\n     * @param {*} value The value to return from the new function.\n     * @returns {Function} Returns the new constant function.\n     * @example\n     *\n     * var objects = _.times(2, _.constant({ 'a': 1 }));\n     *\n     * console.log(objects);\n     * // => [{ 'a': 1 }, { 'a': 1 }]\n     *\n     * console.log(objects[0] === objects[1]);\n     * // => true\n     */\n    function constant(value) {\n      return function() {\n        return value;\n      };\n    }\n\n    /**\n     * Checks `value` to determine whether a default value should be returned in\n     * its place. The `defaultValue` is returned if `value` is `NaN`, `null`,\n     * or `undefined`.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.14.0\n     * @category Util\n     * @param {*} value The value to check.\n     * @param {*} defaultValue The default value.\n     * @returns {*} Returns the resolved value.\n     * @example\n     *\n     * _.defaultTo(1, 10);\n     * // => 1\n     *\n     * _.defaultTo(undefined, 10);\n     * // => 10\n     */\n    function defaultTo(value, defaultValue) {\n      return (value == null || value !== value) ? defaultValue : value;\n    }\n\n    /**\n     * Creates a function that returns the result of invoking the given functions\n     * with the `this` binding of the created function, where each successive\n     * invocation is supplied the return value of the previous.\n     *\n     * @static\n     * @memberOf _\n     * @since 3.0.0\n     * @category Util\n     * @param {...(Function|Function[])} [funcs] The functions to invoke.\n     * @returns {Function} Returns the new composite function.\n     * @see _.flowRight\n     * @example\n     *\n     * function square(n) {\n     *   return n * n;\n     * }\n     *\n     * var addSquare = _.flow([_.add, square]);\n     * addSquare(1, 2);\n     * // => 9\n     */\n    var flow = createFlow();\n\n    /**\n     * This method is like `_.flow` except that it creates a function that\n     * invokes the given functions from right to left.\n     *\n     * @static\n     * @since 3.0.0\n     * @memberOf _\n     * @category Util\n     * @param {...(Function|Function[])} [funcs] The functions to invoke.\n     * @returns {Function} Returns the new composite function.\n     * @see _.flow\n     * @example\n     *\n     * function square(n) {\n     *   return n * n;\n     * }\n     *\n     * var addSquare = _.flowRight([square, _.add]);\n     * addSquare(1, 2);\n     * // => 9\n     */\n    var flowRight = createFlow(true);\n\n    /**\n     * This method returns the first argument it receives.\n     *\n     * @static\n     * @since 0.1.0\n     * @memberOf _\n     * @category Util\n     * @param {*} value Any value.\n     * @returns {*} Returns `value`.\n     * @example\n     *\n     * var object = { 'a': 1 };\n     *\n     * console.log(_.identity(object) === object);\n     * // => true\n     */\n    function identity(value) {\n      return value;\n    }\n\n    /**\n     * Creates a function that invokes `func` with the arguments of the created\n     * function. If `func` is a property name, the created function returns the\n     * property value for a given element. If `func` is an array or object, the\n     * created function returns `true` for elements that contain the equivalent\n     * source properties, otherwise it returns `false`.\n     *\n     * @static\n     * @since 4.0.0\n     * @memberOf _\n     * @category Util\n     * @param {*} [func=_.identity] The value to convert to a callback.\n     * @returns {Function} Returns the callback.\n     * @example\n     *\n     * var users = [\n     *   { 'user': 'barney', 'age': 36, 'active': true },\n     *   { 'user': 'fred',   'age': 40, 'active': false }\n     * ];\n     *\n     * // The `_.matches` iteratee shorthand.\n     * _.filter(users, _.iteratee({ 'user': 'barney', 'active': true }));\n     * // => [{ 'user': 'barney', 'age': 36, 'active': true }]\n     *\n     * // The `_.matchesProperty` iteratee shorthand.\n     * _.filter(users, _.iteratee(['user', 'fred']));\n     * // => [{ 'user': 'fred', 'age': 40 }]\n     *\n     * // The `_.property` iteratee shorthand.\n     * _.map(users, _.iteratee('user'));\n     * // => ['barney', 'fred']\n     *\n     * // Create custom iteratee shorthands.\n     * _.iteratee = _.wrap(_.iteratee, function(iteratee, func) {\n     *   return !_.isRegExp(func) ? iteratee(func) : function(string) {\n     *     return func.test(string);\n     *   };\n     * });\n     *\n     * _.filter(['abc', 'def'], /ef/);\n     * // => ['def']\n     */\n    function iteratee(func) {\n      return baseIteratee(typeof func == 'function' ? func : baseClone(func, CLONE_DEEP_FLAG));\n    }\n\n    /**\n     * Creates a function that performs a partial deep comparison between a given\n     * object and `source`, returning `true` if the given object has equivalent\n     * property values, else `false`.\n     *\n     * **Note:** The created function is equivalent to `_.isMatch` with `source`\n     * partially applied.\n     *\n     * Partial comparisons will match empty array and empty object `source`\n     * values against any array or object value, respectively. See `_.isEqual`\n     * for a list of supported value comparisons.\n     *\n     * **Note:** Multiple values can be checked by combining several matchers\n     * using `_.overSome`\n     *\n     * @static\n     * @memberOf _\n     * @since 3.0.0\n     * @category Util\n     * @param {Object} source The object of property values to match.\n     * @returns {Function} Returns the new spec function.\n     * @example\n     *\n     * var objects = [\n     *   { 'a': 1, 'b': 2, 'c': 3 },\n     *   { 'a': 4, 'b': 5, 'c': 6 }\n     * ];\n     *\n     * _.filter(objects, _.matches({ 'a': 4, 'c': 6 }));\n     * // => [{ 'a': 4, 'b': 5, 'c': 6 }]\n     *\n     * // Checking for several possible values\n     * _.filter(objects, _.overSome([_.matches({ 'a': 1 }), _.matches({ 'a': 4 })]));\n     * // => [{ 'a': 1, 'b': 2, 'c': 3 }, { 'a': 4, 'b': 5, 'c': 6 }]\n     */\n    function matches(source) {\n      return baseMatches(baseClone(source, CLONE_DEEP_FLAG));\n    }\n\n    /**\n     * Creates a function that performs a partial deep comparison between the\n     * value at `path` of a given object to `srcValue`, returning `true` if the\n     * object value is equivalent, else `false`.\n     *\n     * **Note:** Partial comparisons will match empty array and empty object\n     * `srcValue` values against any array or object value, respectively. See\n     * `_.isEqual` for a list of supported value comparisons.\n     *\n     * **Note:** Multiple values can be checked by combining several matchers\n     * using `_.overSome`\n     *\n     * @static\n     * @memberOf _\n     * @since 3.2.0\n     * @category Util\n     * @param {Array|string} path The path of the property to get.\n     * @param {*} srcValue The value to match.\n     * @returns {Function} Returns the new spec function.\n     * @example\n     *\n     * var objects = [\n     *   { 'a': 1, 'b': 2, 'c': 3 },\n     *   { 'a': 4, 'b': 5, 'c': 6 }\n     * ];\n     *\n     * _.find(objects, _.matchesProperty('a', 4));\n     * // => { 'a': 4, 'b': 5, 'c': 6 }\n     *\n     * // Checking for several possible values\n     * _.filter(objects, _.overSome([_.matchesProperty('a', 1), _.matchesProperty('a', 4)]));\n     * // => [{ 'a': 1, 'b': 2, 'c': 3 }, { 'a': 4, 'b': 5, 'c': 6 }]\n     */\n    function matchesProperty(path, srcValue) {\n      return baseMatchesProperty(path, baseClone(srcValue, CLONE_DEEP_FLAG));\n    }\n\n    /**\n     * Creates a function that invokes the method at `path` of a given object.\n     * Any additional arguments are provided to the invoked method.\n     *\n     * @static\n     * @memberOf _\n     * @since 3.7.0\n     * @category Util\n     * @param {Array|string} path The path of the method to invoke.\n     * @param {...*} [args] The arguments to invoke the method with.\n     * @returns {Function} Returns the new invoker function.\n     * @example\n     *\n     * var objects = [\n     *   { 'a': { 'b': _.constant(2) } },\n     *   { 'a': { 'b': _.constant(1) } }\n     * ];\n     *\n     * _.map(objects, _.method('a.b'));\n     * // => [2, 1]\n     *\n     * _.map(objects, _.method(['a', 'b']));\n     * // => [2, 1]\n     */\n    var method = baseRest(function(path, args) {\n      return function(object) {\n        return baseInvoke(object, path, args);\n      };\n    });\n\n    /**\n     * The opposite of `_.method`; this method creates a function that invokes\n     * the method at a given path of `object`. Any additional arguments are\n     * provided to the invoked method.\n     *\n     * @static\n     * @memberOf _\n     * @since 3.7.0\n     * @category Util\n     * @param {Object} object The object to query.\n     * @param {...*} [args] The arguments to invoke the method with.\n     * @returns {Function} Returns the new invoker function.\n     * @example\n     *\n     * var array = _.times(3, _.constant),\n     *     object = { 'a': array, 'b': array, 'c': array };\n     *\n     * _.map(['a[2]', 'c[0]'], _.methodOf(object));\n     * // => [2, 0]\n     *\n     * _.map([['a', '2'], ['c', '0']], _.methodOf(object));\n     * // => [2, 0]\n     */\n    var methodOf = baseRest(function(object, args) {\n      return function(path) {\n        return baseInvoke(object, path, args);\n      };\n    });\n\n    /**\n     * Adds all own enumerable string keyed function properties of a source\n     * object to the destination object. If `object` is a function, then methods\n     * are added to its prototype as well.\n     *\n     * **Note:** Use `_.runInContext` to create a pristine `lodash` function to\n     * avoid conflicts caused by modifying the original.\n     *\n     * @static\n     * @since 0.1.0\n     * @memberOf _\n     * @category Util\n     * @param {Function|Object} [object=lodash] The destination object.\n     * @param {Object} source The object of functions to add.\n     * @param {Object} [options={}] The options object.\n     * @param {boolean} [options.chain=true] Specify whether mixins are chainable.\n     * @returns {Function|Object} Returns `object`.\n     * @example\n     *\n     * function vowels(string) {\n     *   return _.filter(string, function(v) {\n     *     return /[aeiou]/i.test(v);\n     *   });\n     * }\n     *\n     * _.mixin({ 'vowels': vowels });\n     * _.vowels('fred');\n     * // => ['e']\n     *\n     * _('fred').vowels().value();\n     * // => ['e']\n     *\n     * _.mixin({ 'vowels': vowels }, { 'chain': false });\n     * _('fred').vowels();\n     * // => ['e']\n     */\n    function mixin(object, source, options) {\n      var props = keys(source),\n          methodNames = baseFunctions(source, props);\n\n      if (options == null &&\n          !(isObject(source) && (methodNames.length || !props.length))) {\n        options = source;\n        source = object;\n        object = this;\n        methodNames = baseFunctions(source, keys(source));\n      }\n      var chain = !(isObject(options) && 'chain' in options) || !!options.chain,\n          isFunc = isFunction(object);\n\n      arrayEach(methodNames, function(methodName) {\n        var func = source[methodName];\n        object[methodName] = func;\n        if (isFunc) {\n          object.prototype[methodName] = function() {\n            var chainAll = this.__chain__;\n            if (chain || chainAll) {\n              var result = object(this.__wrapped__),\n                  actions = result.__actions__ = copyArray(this.__actions__);\n\n              actions.push({ 'func': func, 'args': arguments, 'thisArg': object });\n              result.__chain__ = chainAll;\n              return result;\n            }\n            return func.apply(object, arrayPush([this.value()], arguments));\n          };\n        }\n      });\n\n      return object;\n    }\n\n    /**\n     * Reverts the `_` variable to its previous value and returns a reference to\n     * the `lodash` function.\n     *\n     * @static\n     * @since 0.1.0\n     * @memberOf _\n     * @category Util\n     * @returns {Function} Returns the `lodash` function.\n     * @example\n     *\n     * var lodash = _.noConflict();\n     */\n    function noConflict() {\n      if (root._ === this) {\n        root._ = oldDash;\n      }\n      return this;\n    }\n\n    /**\n     * This method returns `undefined`.\n     *\n     * @static\n     * @memberOf _\n     * @since 2.3.0\n     * @category Util\n     * @example\n     *\n     * _.times(2, _.noop);\n     * // => [undefined, undefined]\n     */\n    function noop() {\n      // No operation performed.\n    }\n\n    /**\n     * Creates a function that gets the argument at index `n`. If `n` is negative,\n     * the nth argument from the end is returned.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Util\n     * @param {number} [n=0] The index of the argument to return.\n     * @returns {Function} Returns the new pass-thru function.\n     * @example\n     *\n     * var func = _.nthArg(1);\n     * func('a', 'b', 'c', 'd');\n     * // => 'b'\n     *\n     * var func = _.nthArg(-2);\n     * func('a', 'b', 'c', 'd');\n     * // => 'c'\n     */\n    function nthArg(n) {\n      n = toInteger(n);\n      return baseRest(function(args) {\n        return baseNth(args, n);\n      });\n    }\n\n    /**\n     * Creates a function that invokes `iteratees` with the arguments it receives\n     * and returns their results.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Util\n     * @param {...(Function|Function[])} [iteratees=[_.identity]]\n     *  The iteratees to invoke.\n     * @returns {Function} Returns the new function.\n     * @example\n     *\n     * var func = _.over([Math.max, Math.min]);\n     *\n     * func(1, 2, 3, 4);\n     * // => [4, 1]\n     */\n    var over = createOver(arrayMap);\n\n    /**\n     * Creates a function that checks if **all** of the `predicates` return\n     * truthy when invoked with the arguments it receives.\n     *\n     * Following shorthands are possible for providing predicates.\n     * Pass an `Object` and it will be used as an parameter for `_.matches` to create the predicate.\n     * Pass an `Array` of parameters for `_.matchesProperty` and the predicate will be created using them.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Util\n     * @param {...(Function|Function[])} [predicates=[_.identity]]\n     *  The predicates to check.\n     * @returns {Function} Returns the new function.\n     * @example\n     *\n     * var func = _.overEvery([Boolean, isFinite]);\n     *\n     * func('1');\n     * // => true\n     *\n     * func(null);\n     * // => false\n     *\n     * func(NaN);\n     * // => false\n     */\n    var overEvery = createOver(arrayEvery);\n\n    /**\n     * Creates a function that checks if **any** of the `predicates` return\n     * truthy when invoked with the arguments it receives.\n     *\n     * Following shorthands are possible for providing predicates.\n     * Pass an `Object` and it will be used as an parameter for `_.matches` to create the predicate.\n     * Pass an `Array` of parameters for `_.matchesProperty` and the predicate will be created using them.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Util\n     * @param {...(Function|Function[])} [predicates=[_.identity]]\n     *  The predicates to check.\n     * @returns {Function} Returns the new function.\n     * @example\n     *\n     * var func = _.overSome([Boolean, isFinite]);\n     *\n     * func('1');\n     * // => true\n     *\n     * func(null);\n     * // => true\n     *\n     * func(NaN);\n     * // => false\n     *\n     * var matchesFunc = _.overSome([{ 'a': 1 }, { 'a': 2 }])\n     * var matchesPropertyFunc = _.overSome([['a', 1], ['a', 2]])\n     */\n    var overSome = createOver(arraySome);\n\n    /**\n     * Creates a function that returns the value at `path` of a given object.\n     *\n     * @static\n     * @memberOf _\n     * @since 2.4.0\n     * @category Util\n     * @param {Array|string} path The path of the property to get.\n     * @returns {Function} Returns the new accessor function.\n     * @example\n     *\n     * var objects = [\n     *   { 'a': { 'b': 2 } },\n     *   { 'a': { 'b': 1 } }\n     * ];\n     *\n     * _.map(objects, _.property('a.b'));\n     * // => [2, 1]\n     *\n     * _.map(_.sortBy(objects, _.property(['a', 'b'])), 'a.b');\n     * // => [1, 2]\n     */\n    function property(path) {\n      return isKey(path) ? baseProperty(toKey(path)) : basePropertyDeep(path);\n    }\n\n    /**\n     * The opposite of `_.property`; this method creates a function that returns\n     * the value at a given path of `object`.\n     *\n     * @static\n     * @memberOf _\n     * @since 3.0.0\n     * @category Util\n     * @param {Object} object The object to query.\n     * @returns {Function} Returns the new accessor function.\n     * @example\n     *\n     * var array = [0, 1, 2],\n     *     object = { 'a': array, 'b': array, 'c': array };\n     *\n     * _.map(['a[2]', 'c[0]'], _.propertyOf(object));\n     * // => [2, 0]\n     *\n     * _.map([['a', '2'], ['c', '0']], _.propertyOf(object));\n     * // => [2, 0]\n     */\n    function propertyOf(object) {\n      return function(path) {\n        return object == null ? undefined : baseGet(object, path);\n      };\n    }\n\n    /**\n     * Creates an array of numbers (positive and/or negative) progressing from\n     * `start` up to, but not including, `end`. A step of `-1` is used if a negative\n     * `start` is specified without an `end` or `step`. If `end` is not specified,\n     * it's set to `start` with `start` then set to `0`.\n     *\n     * **Note:** JavaScript follows the IEEE-754 standard for resolving\n     * floating-point values which can produce unexpected results.\n     *\n     * @static\n     * @since 0.1.0\n     * @memberOf _\n     * @category Util\n     * @param {number} [start=0] The start of the range.\n     * @param {number} end The end of the range.\n     * @param {number} [step=1] The value to increment or decrement by.\n     * @returns {Array} Returns the range of numbers.\n     * @see _.inRange, _.rangeRight\n     * @example\n     *\n     * _.range(4);\n     * // => [0, 1, 2, 3]\n     *\n     * _.range(-4);\n     * // => [0, -1, -2, -3]\n     *\n     * _.range(1, 5);\n     * // => [1, 2, 3, 4]\n     *\n     * _.range(0, 20, 5);\n     * // => [0, 5, 10, 15]\n     *\n     * _.range(0, -4, -1);\n     * // => [0, -1, -2, -3]\n     *\n     * _.range(1, 4, 0);\n     * // => [1, 1, 1]\n     *\n     * _.range(0);\n     * // => []\n     */\n    var range = createRange();\n\n    /**\n     * This method is like `_.range` except that it populates values in\n     * descending order.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Util\n     * @param {number} [start=0] The start of the range.\n     * @param {number} end The end of the range.\n     * @param {number} [step=1] The value to increment or decrement by.\n     * @returns {Array} Returns the range of numbers.\n     * @see _.inRange, _.range\n     * @example\n     *\n     * _.rangeRight(4);\n     * // => [3, 2, 1, 0]\n     *\n     * _.rangeRight(-4);\n     * // => [-3, -2, -1, 0]\n     *\n     * _.rangeRight(1, 5);\n     * // => [4, 3, 2, 1]\n     *\n     * _.rangeRight(0, 20, 5);\n     * // => [15, 10, 5, 0]\n     *\n     * _.rangeRight(0, -4, -1);\n     * // => [-3, -2, -1, 0]\n     *\n     * _.rangeRight(1, 4, 0);\n     * // => [1, 1, 1]\n     *\n     * _.rangeRight(0);\n     * // => []\n     */\n    var rangeRight = createRange(true);\n\n    /**\n     * This method returns a new empty array.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.13.0\n     * @category Util\n     * @returns {Array} Returns the new empty array.\n     * @example\n     *\n     * var arrays = _.times(2, _.stubArray);\n     *\n     * console.log(arrays);\n     * // => [[], []]\n     *\n     * console.log(arrays[0] === arrays[1]);\n     * // => false\n     */\n    function stubArray() {\n      return [];\n    }\n\n    /**\n     * This method returns `false`.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.13.0\n     * @category Util\n     * @returns {boolean} Returns `false`.\n     * @example\n     *\n     * _.times(2, _.stubFalse);\n     * // => [false, false]\n     */\n    function stubFalse() {\n      return false;\n    }\n\n    /**\n     * This method returns a new empty object.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.13.0\n     * @category Util\n     * @returns {Object} Returns the new empty object.\n     * @example\n     *\n     * var objects = _.times(2, _.stubObject);\n     *\n     * console.log(objects);\n     * // => [{}, {}]\n     *\n     * console.log(objects[0] === objects[1]);\n     * // => false\n     */\n    function stubObject() {\n      return {};\n    }\n\n    /**\n     * This method returns an empty string.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.13.0\n     * @category Util\n     * @returns {string} Returns the empty string.\n     * @example\n     *\n     * _.times(2, _.stubString);\n     * // => ['', '']\n     */\n    function stubString() {\n      return '';\n    }\n\n    /**\n     * This method returns `true`.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.13.0\n     * @category Util\n     * @returns {boolean} Returns `true`.\n     * @example\n     *\n     * _.times(2, _.stubTrue);\n     * // => [true, true]\n     */\n    function stubTrue() {\n      return true;\n    }\n\n    /**\n     * Invokes the iteratee `n` times, returning an array of the results of\n     * each invocation. The iteratee is invoked with one argument; (index).\n     *\n     * @static\n     * @since 0.1.0\n     * @memberOf _\n     * @category Util\n     * @param {number} n The number of times to invoke `iteratee`.\n     * @param {Function} [iteratee=_.identity] The function invoked per iteration.\n     * @returns {Array} Returns the array of results.\n     * @example\n     *\n     * _.times(3, String);\n     * // => ['0', '1', '2']\n     *\n     *  _.times(4, _.constant(0));\n     * // => [0, 0, 0, 0]\n     */\n    function times(n, iteratee) {\n      n = toInteger(n);\n      if (n < 1 || n > MAX_SAFE_INTEGER) {\n        return [];\n      }\n      var index = MAX_ARRAY_LENGTH,\n          length = nativeMin(n, MAX_ARRAY_LENGTH);\n\n      iteratee = getIteratee(iteratee);\n      n -= MAX_ARRAY_LENGTH;\n\n      var result = baseTimes(length, iteratee);\n      while (++index < n) {\n        iteratee(index);\n      }\n      return result;\n    }\n\n    /**\n     * Converts `value` to a property path array.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Util\n     * @param {*} value The value to convert.\n     * @returns {Array} Returns the new property path array.\n     * @example\n     *\n     * _.toPath('a.b.c');\n     * // => ['a', 'b', 'c']\n     *\n     * _.toPath('a[0].b.c');\n     * // => ['a', '0', 'b', 'c']\n     */\n    function toPath(value) {\n      if (isArray(value)) {\n        return arrayMap(value, toKey);\n      }\n      return isSymbol(value) ? [value] : copyArray(stringToPath(toString(value)));\n    }\n\n    /**\n     * Generates a unique ID. If `prefix` is given, the ID is appended to it.\n     *\n     * @static\n     * @since 0.1.0\n     * @memberOf _\n     * @category Util\n     * @param {string} [prefix=''] The value to prefix the ID with.\n     * @returns {string} Returns the unique ID.\n     * @example\n     *\n     * _.uniqueId('contact_');\n     * // => 'contact_104'\n     *\n     * _.uniqueId();\n     * // => '105'\n     */\n    function uniqueId(prefix) {\n      var id = ++idCounter;\n      return toString(prefix) + id;\n    }\n\n    /*------------------------------------------------------------------------*/\n\n    /**\n     * Adds two numbers.\n     *\n     * @static\n     * @memberOf _\n     * @since 3.4.0\n     * @category Math\n     * @param {number} augend The first number in an addition.\n     * @param {number} addend The second number in an addition.\n     * @returns {number} Returns the total.\n     * @example\n     *\n     * _.add(6, 4);\n     * // => 10\n     */\n    var add = createMathOperation(function(augend, addend) {\n      return augend + addend;\n    }, 0);\n\n    /**\n     * Computes `number` rounded up to `precision`.\n     *\n     * @static\n     * @memberOf _\n     * @since 3.10.0\n     * @category Math\n     * @param {number} number The number to round up.\n     * @param {number} [precision=0] The precision to round up to.\n     * @returns {number} Returns the rounded up number.\n     * @example\n     *\n     * _.ceil(4.006);\n     * // => 5\n     *\n     * _.ceil(6.004, 2);\n     * // => 6.01\n     *\n     * _.ceil(6040, -2);\n     * // => 6100\n     */\n    var ceil = createRound('ceil');\n\n    /**\n     * Divide two numbers.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.7.0\n     * @category Math\n     * @param {number} dividend The first number in a division.\n     * @param {number} divisor The second number in a division.\n     * @returns {number} Returns the quotient.\n     * @example\n     *\n     * _.divide(6, 4);\n     * // => 1.5\n     */\n    var divide = createMathOperation(function(dividend, divisor) {\n      return dividend / divisor;\n    }, 1);\n\n    /**\n     * Computes `number` rounded down to `precision`.\n     *\n     * @static\n     * @memberOf _\n     * @since 3.10.0\n     * @category Math\n     * @param {number} number The number to round down.\n     * @param {number} [precision=0] The precision to round down to.\n     * @returns {number} Returns the rounded down number.\n     * @example\n     *\n     * _.floor(4.006);\n     * // => 4\n     *\n     * _.floor(0.046, 2);\n     * // => 0.04\n     *\n     * _.floor(4060, -2);\n     * // => 4000\n     */\n    var floor = createRound('floor');\n\n    /**\n     * Computes the maximum value of `array`. If `array` is empty or falsey,\n     * `undefined` is returned.\n     *\n     * @static\n     * @since 0.1.0\n     * @memberOf _\n     * @category Math\n     * @param {Array} array The array to iterate over.\n     * @returns {*} Returns the maximum value.\n     * @example\n     *\n     * _.max([4, 2, 8, 6]);\n     * // => 8\n     *\n     * _.max([]);\n     * // => undefined\n     */\n    function max(array) {\n      return (array && array.length)\n        ? baseExtremum(array, identity, baseGt)\n        : undefined;\n    }\n\n    /**\n     * This method is like `_.max` except that it accepts `iteratee` which is\n     * invoked for each element in `array` to generate the criterion by which\n     * the value is ranked. The iteratee is invoked with one argument: (value).\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Math\n     * @param {Array} array The array to iterate over.\n     * @param {Function} [iteratee=_.identity] The iteratee invoked per element.\n     * @returns {*} Returns the maximum value.\n     * @example\n     *\n     * var objects = [{ 'n': 1 }, { 'n': 2 }];\n     *\n     * _.maxBy(objects, function(o) { return o.n; });\n     * // => { 'n': 2 }\n     *\n     * // The `_.property` iteratee shorthand.\n     * _.maxBy(objects, 'n');\n     * // => { 'n': 2 }\n     */\n    function maxBy(array, iteratee) {\n      return (array && array.length)\n        ? baseExtremum(array, getIteratee(iteratee, 2), baseGt)\n        : undefined;\n    }\n\n    /**\n     * Computes the mean of the values in `array`.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Math\n     * @param {Array} array The array to iterate over.\n     * @returns {number} Returns the mean.\n     * @example\n     *\n     * _.mean([4, 2, 8, 6]);\n     * // => 5\n     */\n    function mean(array) {\n      return baseMean(array, identity);\n    }\n\n    /**\n     * This method is like `_.mean` except that it accepts `iteratee` which is\n     * invoked for each element in `array` to generate the value to be averaged.\n     * The iteratee is invoked with one argument: (value).\n     *\n     * @static\n     * @memberOf _\n     * @since 4.7.0\n     * @category Math\n     * @param {Array} array The array to iterate over.\n     * @param {Function} [iteratee=_.identity] The iteratee invoked per element.\n     * @returns {number} Returns the mean.\n     * @example\n     *\n     * var objects = [{ 'n': 4 }, { 'n': 2 }, { 'n': 8 }, { 'n': 6 }];\n     *\n     * _.meanBy(objects, function(o) { return o.n; });\n     * // => 5\n     *\n     * // The `_.property` iteratee shorthand.\n     * _.meanBy(objects, 'n');\n     * // => 5\n     */\n    function meanBy(array, iteratee) {\n      return baseMean(array, getIteratee(iteratee, 2));\n    }\n\n    /**\n     * Computes the minimum value of `array`. If `array` is empty or falsey,\n     * `undefined` is returned.\n     *\n     * @static\n     * @since 0.1.0\n     * @memberOf _\n     * @category Math\n     * @param {Array} array The array to iterate over.\n     * @returns {*} Returns the minimum value.\n     * @example\n     *\n     * _.min([4, 2, 8, 6]);\n     * // => 2\n     *\n     * _.min([]);\n     * // => undefined\n     */\n    function min(array) {\n      return (array && array.length)\n        ? baseExtremum(array, identity, baseLt)\n        : undefined;\n    }\n\n    /**\n     * This method is like `_.min` except that it accepts `iteratee` which is\n     * invoked for each element in `array` to generate the criterion by which\n     * the value is ranked. The iteratee is invoked with one argument: (value).\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Math\n     * @param {Array} array The array to iterate over.\n     * @param {Function} [iteratee=_.identity] The iteratee invoked per element.\n     * @returns {*} Returns the minimum value.\n     * @example\n     *\n     * var objects = [{ 'n': 1 }, { 'n': 2 }];\n     *\n     * _.minBy(objects, function(o) { return o.n; });\n     * // => { 'n': 1 }\n     *\n     * // The `_.property` iteratee shorthand.\n     * _.minBy(objects, 'n');\n     * // => { 'n': 1 }\n     */\n    function minBy(array, iteratee) {\n      return (array && array.length)\n        ? baseExtremum(array, getIteratee(iteratee, 2), baseLt)\n        : undefined;\n    }\n\n    /**\n     * Multiply two numbers.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.7.0\n     * @category Math\n     * @param {number} multiplier The first number in a multiplication.\n     * @param {number} multiplicand The second number in a multiplication.\n     * @returns {number} Returns the product.\n     * @example\n     *\n     * _.multiply(6, 4);\n     * // => 24\n     */\n    var multiply = createMathOperation(function(multiplier, multiplicand) {\n      return multiplier * multiplicand;\n    }, 1);\n\n    /**\n     * Computes `number` rounded to `precision`.\n     *\n     * @static\n     * @memberOf _\n     * @since 3.10.0\n     * @category Math\n     * @param {number} number The number to round.\n     * @param {number} [precision=0] The precision to round to.\n     * @returns {number} Returns the rounded number.\n     * @example\n     *\n     * _.round(4.006);\n     * // => 4\n     *\n     * _.round(4.006, 2);\n     * // => 4.01\n     *\n     * _.round(4060, -2);\n     * // => 4100\n     */\n    var round = createRound('round');\n\n    /**\n     * Subtract two numbers.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Math\n     * @param {number} minuend The first number in a subtraction.\n     * @param {number} subtrahend The second number in a subtraction.\n     * @returns {number} Returns the difference.\n     * @example\n     *\n     * _.subtract(6, 4);\n     * // => 2\n     */\n    var subtract = createMathOperation(function(minuend, subtrahend) {\n      return minuend - subtrahend;\n    }, 0);\n\n    /**\n     * Computes the sum of the values in `array`.\n     *\n     * @static\n     * @memberOf _\n     * @since 3.4.0\n     * @category Math\n     * @param {Array} array The array to iterate over.\n     * @returns {number} Returns the sum.\n     * @example\n     *\n     * _.sum([4, 2, 8, 6]);\n     * // => 20\n     */\n    function sum(array) {\n      return (array && array.length)\n        ? baseSum(array, identity)\n        : 0;\n    }\n\n    /**\n     * This method is like `_.sum` except that it accepts `iteratee` which is\n     * invoked for each element in `array` to generate the value to be summed.\n     * The iteratee is invoked with one argument: (value).\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Math\n     * @param {Array} array The array to iterate over.\n     * @param {Function} [iteratee=_.identity] The iteratee invoked per element.\n     * @returns {number} Returns the sum.\n     * @example\n     *\n     * var objects = [{ 'n': 4 }, { 'n': 2 }, { 'n': 8 }, { 'n': 6 }];\n     *\n     * _.sumBy(objects, function(o) { return o.n; });\n     * // => 20\n     *\n     * // The `_.property` iteratee shorthand.\n     * _.sumBy(objects, 'n');\n     * // => 20\n     */\n    function sumBy(array, iteratee) {\n      return (array && array.length)\n        ? baseSum(array, getIteratee(iteratee, 2))\n        : 0;\n    }\n\n    /*------------------------------------------------------------------------*/\n\n    // Add methods that return wrapped values in chain sequences.\n    lodash.after = after;\n    lodash.ary = ary;\n    lodash.assign = assign;\n    lodash.assignIn = assignIn;\n    lodash.assignInWith = assignInWith;\n    lodash.assignWith = assignWith;\n    lodash.at = at;\n    lodash.before = before;\n    lodash.bind = bind;\n    lodash.bindAll = bindAll;\n    lodash.bindKey = bindKey;\n    lodash.castArray = castArray;\n    lodash.chain = chain;\n    lodash.chunk = chunk;\n    lodash.compact = compact;\n    lodash.concat = concat;\n    lodash.cond = cond;\n    lodash.conforms = conforms;\n    lodash.constant = constant;\n    lodash.countBy = countBy;\n    lodash.create = create;\n    lodash.curry = curry;\n    lodash.curryRight = curryRight;\n    lodash.debounce = debounce;\n    lodash.defaults = defaults;\n    lodash.defaultsDeep = defaultsDeep;\n    lodash.defer = defer;\n    lodash.delay = delay;\n    lodash.difference = difference;\n    lodash.differenceBy = differenceBy;\n    lodash.differenceWith = differenceWith;\n    lodash.drop = drop;\n    lodash.dropRight = dropRight;\n    lodash.dropRightWhile = dropRightWhile;\n    lodash.dropWhile = dropWhile;\n    lodash.fill = fill;\n    lodash.filter = filter;\n    lodash.flatMap = flatMap;\n    lodash.flatMapDeep = flatMapDeep;\n    lodash.flatMapDepth = flatMapDepth;\n    lodash.flatten = flatten;\n    lodash.flattenDeep = flattenDeep;\n    lodash.flattenDepth = flattenDepth;\n    lodash.flip = flip;\n    lodash.flow = flow;\n    lodash.flowRight = flowRight;\n    lodash.fromPairs = fromPairs;\n    lodash.functions = functions;\n    lodash.functionsIn = functionsIn;\n    lodash.groupBy = groupBy;\n    lodash.initial = initial;\n    lodash.intersection = intersection;\n    lodash.intersectionBy = intersectionBy;\n    lodash.intersectionWith = intersectionWith;\n    lodash.invert = invert;\n    lodash.invertBy = invertBy;\n    lodash.invokeMap = invokeMap;\n    lodash.iteratee = iteratee;\n    lodash.keyBy = keyBy;\n    lodash.keys = keys;\n    lodash.keysIn = keysIn;\n    lodash.map = map;\n    lodash.mapKeys = mapKeys;\n    lodash.mapValues = mapValues;\n    lodash.matches = matches;\n    lodash.matchesProperty = matchesProperty;\n    lodash.memoize = memoize;\n    lodash.merge = merge;\n    lodash.mergeWith = mergeWith;\n    lodash.method = method;\n    lodash.methodOf = methodOf;\n    lodash.mixin = mixin;\n    lodash.negate = negate;\n    lodash.nthArg = nthArg;\n    lodash.omit = omit;\n    lodash.omitBy = omitBy;\n    lodash.once = once;\n    lodash.orderBy = orderBy;\n    lodash.over = over;\n    lodash.overArgs = overArgs;\n    lodash.overEvery = overEvery;\n    lodash.overSome = overSome;\n    lodash.partial = partial;\n    lodash.partialRight = partialRight;\n    lodash.partition = partition;\n    lodash.pick = pick;\n    lodash.pickBy = pickBy;\n    lodash.property = property;\n    lodash.propertyOf = propertyOf;\n    lodash.pull = pull;\n    lodash.pullAll = pullAll;\n    lodash.pullAllBy = pullAllBy;\n    lodash.pullAllWith = pullAllWith;\n    lodash.pullAt = pullAt;\n    lodash.range = range;\n    lodash.rangeRight = rangeRight;\n    lodash.rearg = rearg;\n    lodash.reject = reject;\n    lodash.remove = remove;\n    lodash.rest = rest;\n    lodash.reverse = reverse;\n    lodash.sampleSize = sampleSize;\n    lodash.set = set;\n    lodash.setWith = setWith;\n    lodash.shuffle = shuffle;\n    lodash.slice = slice;\n    lodash.sortBy = sortBy;\n    lodash.sortedUniq = sortedUniq;\n    lodash.sortedUniqBy = sortedUniqBy;\n    lodash.split = split;\n    lodash.spread = spread;\n    lodash.tail = tail;\n    lodash.take = take;\n    lodash.takeRight = takeRight;\n    lodash.takeRightWhile = takeRightWhile;\n    lodash.takeWhile = takeWhile;\n    lodash.tap = tap;\n    lodash.throttle = throttle;\n    lodash.thru = thru;\n    lodash.toArray = toArray;\n    lodash.toPairs = toPairs;\n    lodash.toPairsIn = toPairsIn;\n    lodash.toPath = toPath;\n    lodash.toPlainObject = toPlainObject;\n    lodash.transform = transform;\n    lodash.unary = unary;\n    lodash.union = union;\n    lodash.unionBy = unionBy;\n    lodash.unionWith = unionWith;\n    lodash.uniq = uniq;\n    lodash.uniqBy = uniqBy;\n    lodash.uniqWith = uniqWith;\n    lodash.unset = unset;\n    lodash.unzip = unzip;\n    lodash.unzipWith = unzipWith;\n    lodash.update = update;\n    lodash.updateWith = updateWith;\n    lodash.values = values;\n    lodash.valuesIn = valuesIn;\n    lodash.without = without;\n    lodash.words = words;\n    lodash.wrap = wrap;\n    lodash.xor = xor;\n    lodash.xorBy = xorBy;\n    lodash.xorWith = xorWith;\n    lodash.zip = zip;\n    lodash.zipObject = zipObject;\n    lodash.zipObjectDeep = zipObjectDeep;\n    lodash.zipWith = zipWith;\n\n    // Add aliases.\n    lodash.entries = toPairs;\n    lodash.entriesIn = toPairsIn;\n    lodash.extend = assignIn;\n    lodash.extendWith = assignInWith;\n\n    // Add methods to `lodash.prototype`.\n    mixin(lodash, lodash);\n\n    /*------------------------------------------------------------------------*/\n\n    // Add methods that return unwrapped values in chain sequences.\n    lodash.add = add;\n    lodash.attempt = attempt;\n    lodash.camelCase = camelCase;\n    lodash.capitalize = capitalize;\n    lodash.ceil = ceil;\n    lodash.clamp = clamp;\n    lodash.clone = clone;\n    lodash.cloneDeep = cloneDeep;\n    lodash.cloneDeepWith = cloneDeepWith;\n    lodash.cloneWith = cloneWith;\n    lodash.conformsTo = conformsTo;\n    lodash.deburr = deburr;\n    lodash.defaultTo = defaultTo;\n    lodash.divide = divide;\n    lodash.endsWith = endsWith;\n    lodash.eq = eq;\n    lodash.escape = escape;\n    lodash.escapeRegExp = escapeRegExp;\n    lodash.every = every;\n    lodash.find = find;\n    lodash.findIndex = findIndex;\n    lodash.findKey = findKey;\n    lodash.findLast = findLast;\n    lodash.findLastIndex = findLastIndex;\n    lodash.findLastKey = findLastKey;\n    lodash.floor = floor;\n    lodash.forEach = forEach;\n    lodash.forEachRight = forEachRight;\n    lodash.forIn = forIn;\n    lodash.forInRight = forInRight;\n    lodash.forOwn = forOwn;\n    lodash.forOwnRight = forOwnRight;\n    lodash.get = get;\n    lodash.gt = gt;\n    lodash.gte = gte;\n    lodash.has = has;\n    lodash.hasIn = hasIn;\n    lodash.head = head;\n    lodash.identity = identity;\n    lodash.includes = includes;\n    lodash.indexOf = indexOf;\n    lodash.inRange = inRange;\n    lodash.invoke = invoke;\n    lodash.isArguments = isArguments;\n    lodash.isArray = isArray;\n    lodash.isArrayBuffer = isArrayBuffer;\n    lodash.isArrayLike = isArrayLike;\n    lodash.isArrayLikeObject = isArrayLikeObject;\n    lodash.isBoolean = isBoolean;\n    lodash.isBuffer = isBuffer;\n    lodash.isDate = isDate;\n    lodash.isElement = isElement;\n    lodash.isEmpty = isEmpty;\n    lodash.isEqual = isEqual;\n    lodash.isEqualWith = isEqualWith;\n    lodash.isError = isError;\n    lodash.isFinite = isFinite;\n    lodash.isFunction = isFunction;\n    lodash.isInteger = isInteger;\n    lodash.isLength = isLength;\n    lodash.isMap = isMap;\n    lodash.isMatch = isMatch;\n    lodash.isMatchWith = isMatchWith;\n    lodash.isNaN = isNaN;\n    lodash.isNative = isNative;\n    lodash.isNil = isNil;\n    lodash.isNull = isNull;\n    lodash.isNumber = isNumber;\n    lodash.isObject = isObject;\n    lodash.isObjectLike = isObjectLike;\n    lodash.isPlainObject = isPlainObject;\n    lodash.isRegExp = isRegExp;\n    lodash.isSafeInteger = isSafeInteger;\n    lodash.isSet = isSet;\n    lodash.isString = isString;\n    lodash.isSymbol = isSymbol;\n    lodash.isTypedArray = isTypedArray;\n    lodash.isUndefined = isUndefined;\n    lodash.isWeakMap = isWeakMap;\n    lodash.isWeakSet = isWeakSet;\n    lodash.join = join;\n    lodash.kebabCase = kebabCase;\n    lodash.last = last;\n    lodash.lastIndexOf = lastIndexOf;\n    lodash.lowerCase = lowerCase;\n    lodash.lowerFirst = lowerFirst;\n    lodash.lt = lt;\n    lodash.lte = lte;\n    lodash.max = max;\n    lodash.maxBy = maxBy;\n    lodash.mean = mean;\n    lodash.meanBy = meanBy;\n    lodash.min = min;\n    lodash.minBy = minBy;\n    lodash.stubArray = stubArray;\n    lodash.stubFalse = stubFalse;\n    lodash.stubObject = stubObject;\n    lodash.stubString = stubString;\n    lodash.stubTrue = stubTrue;\n    lodash.multiply = multiply;\n    lodash.nth = nth;\n    lodash.noConflict = noConflict;\n    lodash.noop = noop;\n    lodash.now = now;\n    lodash.pad = pad;\n    lodash.padEnd = padEnd;\n    lodash.padStart = padStart;\n    lodash.parseInt = parseInt;\n    lodash.random = random;\n    lodash.reduce = reduce;\n    lodash.reduceRight = reduceRight;\n    lodash.repeat = repeat;\n    lodash.replace = replace;\n    lodash.result = result;\n    lodash.round = round;\n    lodash.runInContext = runInContext;\n    lodash.sample = sample;\n    lodash.size = size;\n    lodash.snakeCase = snakeCase;\n    lodash.some = some;\n    lodash.sortedIndex = sortedIndex;\n    lodash.sortedIndexBy = sortedIndexBy;\n    lodash.sortedIndexOf = sortedIndexOf;\n    lodash.sortedLastIndex = sortedLastIndex;\n    lodash.sortedLastIndexBy = sortedLastIndexBy;\n    lodash.sortedLastIndexOf = sortedLastIndexOf;\n    lodash.startCase = startCase;\n    lodash.startsWith = startsWith;\n    lodash.subtract = subtract;\n    lodash.sum = sum;\n    lodash.sumBy = sumBy;\n    lodash.template = template;\n    lodash.times = times;\n    lodash.toFinite = toFinite;\n    lodash.toInteger = toInteger;\n    lodash.toLength = toLength;\n    lodash.toLower = toLower;\n    lodash.toNumber = toNumber;\n    lodash.toSafeInteger = toSafeInteger;\n    lodash.toString = toString;\n    lodash.toUpper = toUpper;\n    lodash.trim = trim;\n    lodash.trimEnd = trimEnd;\n    lodash.trimStart = trimStart;\n    lodash.truncate = truncate;\n    lodash.unescape = unescape;\n    lodash.uniqueId = uniqueId;\n    lodash.upperCase = upperCase;\n    lodash.upperFirst = upperFirst;\n\n    // Add aliases.\n    lodash.each = forEach;\n    lodash.eachRight = forEachRight;\n    lodash.first = head;\n\n    mixin(lodash, (function() {\n      var source = {};\n      baseForOwn(lodash, function(func, methodName) {\n        if (!hasOwnProperty.call(lodash.prototype, methodName)) {\n          source[methodName] = func;\n        }\n      });\n      return source;\n    }()), { 'chain': false });\n\n    /*------------------------------------------------------------------------*/\n\n    /**\n     * The semantic version number.\n     *\n     * @static\n     * @memberOf _\n     * @type {string}\n     */\n    lodash.VERSION = VERSION;\n\n    // Assign default placeholders.\n    arrayEach(['bind', 'bindKey', 'curry', 'curryRight', 'partial', 'partialRight'], function(methodName) {\n      lodash[methodName].placeholder = lodash;\n    });\n\n    // Add `LazyWrapper` methods for `_.drop` and `_.take` variants.\n    arrayEach(['drop', 'take'], function(methodName, index) {\n      LazyWrapper.prototype[methodName] = function(n) {\n        n = n === undefined ? 1 : nativeMax(toInteger(n), 0);\n\n        var result = (this.__filtered__ && !index)\n          ? new LazyWrapper(this)\n          : this.clone();\n\n        if (result.__filtered__) {\n          result.__takeCount__ = nativeMin(n, result.__takeCount__);\n        } else {\n          result.__views__.push({\n            'size': nativeMin(n, MAX_ARRAY_LENGTH),\n            'type': methodName + (result.__dir__ < 0 ? 'Right' : '')\n          });\n        }\n        return result;\n      };\n\n      LazyWrapper.prototype[methodName + 'Right'] = function(n) {\n        return this.reverse()[methodName](n).reverse();\n      };\n    });\n\n    // Add `LazyWrapper` methods that accept an `iteratee` value.\n    arrayEach(['filter', 'map', 'takeWhile'], function(methodName, index) {\n      var type = index + 1,\n          isFilter = type == LAZY_FILTER_FLAG || type == LAZY_WHILE_FLAG;\n\n      LazyWrapper.prototype[methodName] = function(iteratee) {\n        var result = this.clone();\n        result.__iteratees__.push({\n          'iteratee': getIteratee(iteratee, 3),\n          'type': type\n        });\n        result.__filtered__ = result.__filtered__ || isFilter;\n        return result;\n      };\n    });\n\n    // Add `LazyWrapper` methods for `_.head` and `_.last`.\n    arrayEach(['head', 'last'], function(methodName, index) {\n      var takeName = 'take' + (index ? 'Right' : '');\n\n      LazyWrapper.prototype[methodName] = function() {\n        return this[takeName](1).value()[0];\n      };\n    });\n\n    // Add `LazyWrapper` methods for `_.initial` and `_.tail`.\n    arrayEach(['initial', 'tail'], function(methodName, index) {\n      var dropName = 'drop' + (index ? '' : 'Right');\n\n      LazyWrapper.prototype[methodName] = function() {\n        return this.__filtered__ ? new LazyWrapper(this) : this[dropName](1);\n      };\n    });\n\n    LazyWrapper.prototype.compact = function() {\n      return this.filter(identity);\n    };\n\n    LazyWrapper.prototype.find = function(predicate) {\n      return this.filter(predicate).head();\n    };\n\n    LazyWrapper.prototype.findLast = function(predicate) {\n      return this.reverse().find(predicate);\n    };\n\n    LazyWrapper.prototype.invokeMap = baseRest(function(path, args) {\n      if (typeof path == 'function') {\n        return new LazyWrapper(this);\n      }\n      return this.map(function(value) {\n        return baseInvoke(value, path, args);\n      });\n    });\n\n    LazyWrapper.prototype.reject = function(predicate) {\n      return this.filter(negate(getIteratee(predicate)));\n    };\n\n    LazyWrapper.prototype.slice = function(start, end) {\n      start = toInteger(start);\n\n      var result = this;\n      if (result.__filtered__ && (start > 0 || end < 0)) {\n        return new LazyWrapper(result);\n      }\n      if (start < 0) {\n        result = result.takeRight(-start);\n      } else if (start) {\n        result = result.drop(start);\n      }\n      if (end !== undefined) {\n        end = toInteger(end);\n        result = end < 0 ? result.dropRight(-end) : result.take(end - start);\n      }\n      return result;\n    };\n\n    LazyWrapper.prototype.takeRightWhile = function(predicate) {\n      return this.reverse().takeWhile(predicate).reverse();\n    };\n\n    LazyWrapper.prototype.toArray = function() {\n      return this.take(MAX_ARRAY_LENGTH);\n    };\n\n    // Add `LazyWrapper` methods to `lodash.prototype`.\n    baseForOwn(LazyWrapper.prototype, function(func, methodName) {\n      var checkIteratee = /^(?:filter|find|map|reject)|While$/.test(methodName),\n          isTaker = /^(?:head|last)$/.test(methodName),\n          lodashFunc = lodash[isTaker ? ('take' + (methodName == 'last' ? 'Right' : '')) : methodName],\n          retUnwrapped = isTaker || /^find/.test(methodName);\n\n      if (!lodashFunc) {\n        return;\n      }\n      lodash.prototype[methodName] = function() {\n        var value = this.__wrapped__,\n            args = isTaker ? [1] : arguments,\n            isLazy = value instanceof LazyWrapper,\n            iteratee = args[0],\n            useLazy = isLazy || isArray(value);\n\n        var interceptor = function(value) {\n          var result = lodashFunc.apply(lodash, arrayPush([value], args));\n          return (isTaker && chainAll) ? result[0] : result;\n        };\n\n        if (useLazy && checkIteratee && typeof iteratee == 'function' && iteratee.length != 1) {\n          // Avoid lazy use if the iteratee has a \"length\" value other than `1`.\n          isLazy = useLazy = false;\n        }\n        var chainAll = this.__chain__,\n            isHybrid = !!this.__actions__.length,\n            isUnwrapped = retUnwrapped && !chainAll,\n            onlyLazy = isLazy && !isHybrid;\n\n        if (!retUnwrapped && useLazy) {\n          value = onlyLazy ? value : new LazyWrapper(this);\n          var result = func.apply(value, args);\n          result.__actions__.push({ 'func': thru, 'args': [interceptor], 'thisArg': undefined });\n          return new LodashWrapper(result, chainAll);\n        }\n        if (isUnwrapped && onlyLazy) {\n          return func.apply(this, args);\n        }\n        result = this.thru(interceptor);\n        return isUnwrapped ? (isTaker ? result.value()[0] : result.value()) : result;\n      };\n    });\n\n    // Add `Array` methods to `lodash.prototype`.\n    arrayEach(['pop', 'push', 'shift', 'sort', 'splice', 'unshift'], function(methodName) {\n      var func = arrayProto[methodName],\n          chainName = /^(?:push|sort|unshift)$/.test(methodName) ? 'tap' : 'thru',\n          retUnwrapped = /^(?:pop|shift)$/.test(methodName);\n\n      lodash.prototype[methodName] = function() {\n        var args = arguments;\n        if (retUnwrapped && !this.__chain__) {\n          var value = this.value();\n          return func.apply(isArray(value) ? value : [], args);\n        }\n        return this[chainName](function(value) {\n          return func.apply(isArray(value) ? value : [], args);\n        });\n      };\n    });\n\n    // Map minified method names to their real names.\n    baseForOwn(LazyWrapper.prototype, function(func, methodName) {\n      var lodashFunc = lodash[methodName];\n      if (lodashFunc) {\n        var key = lodashFunc.name + '';\n        if (!hasOwnProperty.call(realNames, key)) {\n          realNames[key] = [];\n        }\n        realNames[key].push({ 'name': methodName, 'func': lodashFunc });\n      }\n    });\n\n    realNames[createHybrid(undefined, WRAP_BIND_KEY_FLAG).name] = [{\n      'name': 'wrapper',\n      'func': undefined\n    }];\n\n    // Add methods to `LazyWrapper`.\n    LazyWrapper.prototype.clone = lazyClone;\n    LazyWrapper.prototype.reverse = lazyReverse;\n    LazyWrapper.prototype.value = lazyValue;\n\n    // Add chain sequence methods to the `lodash` wrapper.\n    lodash.prototype.at = wrapperAt;\n    lodash.prototype.chain = wrapperChain;\n    lodash.prototype.commit = wrapperCommit;\n    lodash.prototype.next = wrapperNext;\n    lodash.prototype.plant = wrapperPlant;\n    lodash.prototype.reverse = wrapperReverse;\n    lodash.prototype.toJSON = lodash.prototype.valueOf = lodash.prototype.value = wrapperValue;\n\n    // Add lazy aliases.\n    lodash.prototype.first = lodash.prototype.head;\n\n    if (symIterator) {\n      lodash.prototype[symIterator] = wrapperToIterator;\n    }\n    return lodash;\n  });\n\n  /*--------------------------------------------------------------------------*/\n\n  // Export lodash.\n  var _ = runInContext();\n\n  // Some AMD build optimizers, like r.js, check for condition patterns like:\n  if (typeof define == 'function' && typeof define.amd == 'object' && define.amd) {\n    // Expose Lodash on the global object to prevent errors when Lodash is\n    // loaded by a script tag in the presence of an AMD loader.\n    // See http://requirejs.org/docs/errors.html#mismatch for more details.\n    // Use `_.noConflict` to remove Lodash from the global object.\n    root._ = _;\n\n    // Define as an anonymous module so, through path mapping, it can be\n    // referenced as the \"underscore\" module.\n    define(function() {\n      return _;\n    });\n  }\n  // Check for `exports` after `define` in case a build optimizer adds it.\n  else if (freeModule) {\n    // Export for Node.js.\n    (freeModule.exports = _)._ = _;\n    // Export for CommonJS support.\n    freeExports._ = _;\n  }\n  else {\n    // Export to the global object.\n    root._ = _;\n  }\n}.call(this));\n","'use strict';\n\nObject.defineProperty(exports, '__esModule', { value: true });\n\nfunction _interopDefault (ex) { return (ex && (typeof ex === 'object') && 'default' in ex) ? ex['default'] : ex; }\n\nvar Stream = _interopDefault(require('stream'));\nvar http = _interopDefault(require('http'));\nvar Url = _interopDefault(require('url'));\nvar whatwgUrl = _interopDefault(require('whatwg-url'));\nvar https = _interopDefault(require('https'));\nvar zlib = _interopDefault(require('zlib'));\n\n// Based on https://github.com/tmpvar/jsdom/blob/aa85b2abf07766ff7bf5c1f6daafb3726f2f2db5/lib/jsdom/living/blob.js\n\n// fix for \"Readable\" isn't a named export issue\nconst Readable = Stream.Readable;\n\nconst BUFFER = Symbol('buffer');\nconst TYPE = Symbol('type');\n\nclass Blob {\n\tconstructor() {\n\t\tthis[TYPE] = '';\n\n\t\tconst blobParts = arguments[0];\n\t\tconst options = arguments[1];\n\n\t\tconst buffers = [];\n\t\tlet size = 0;\n\n\t\tif (blobParts) {\n\t\t\tconst a = blobParts;\n\t\t\tconst length = Number(a.length);\n\t\t\tfor (let i = 0; i < length; i++) {\n\t\t\t\tconst element = a[i];\n\t\t\t\tlet buffer;\n\t\t\t\tif (element instanceof Buffer) {\n\t\t\t\t\tbuffer = element;\n\t\t\t\t} else if (ArrayBuffer.isView(element)) {\n\t\t\t\t\tbuffer = Buffer.from(element.buffer, element.byteOffset, element.byteLength);\n\t\t\t\t} else if (element instanceof ArrayBuffer) {\n\t\t\t\t\tbuffer = Buffer.from(element);\n\t\t\t\t} else if (element instanceof Blob) {\n\t\t\t\t\tbuffer = element[BUFFER];\n\t\t\t\t} else {\n\t\t\t\t\tbuffer = Buffer.from(typeof element === 'string' ? element : String(element));\n\t\t\t\t}\n\t\t\t\tsize += buffer.length;\n\t\t\t\tbuffers.push(buffer);\n\t\t\t}\n\t\t}\n\n\t\tthis[BUFFER] = Buffer.concat(buffers);\n\n\t\tlet type = options && options.type !== undefined && String(options.type).toLowerCase();\n\t\tif (type && !/[^\\u0020-\\u007E]/.test(type)) {\n\t\t\tthis[TYPE] = type;\n\t\t}\n\t}\n\tget size() {\n\t\treturn this[BUFFER].length;\n\t}\n\tget type() {\n\t\treturn this[TYPE];\n\t}\n\ttext() {\n\t\treturn Promise.resolve(this[BUFFER].toString());\n\t}\n\tarrayBuffer() {\n\t\tconst buf = this[BUFFER];\n\t\tconst ab = buf.buffer.slice(buf.byteOffset, buf.byteOffset + buf.byteLength);\n\t\treturn Promise.resolve(ab);\n\t}\n\tstream() {\n\t\tconst readable = new Readable();\n\t\treadable._read = function () {};\n\t\treadable.push(this[BUFFER]);\n\t\treadable.push(null);\n\t\treturn readable;\n\t}\n\ttoString() {\n\t\treturn '[object Blob]';\n\t}\n\tslice() {\n\t\tconst size = this.size;\n\n\t\tconst start = arguments[0];\n\t\tconst end = arguments[1];\n\t\tlet relativeStart, relativeEnd;\n\t\tif (start === undefined) {\n\t\t\trelativeStart = 0;\n\t\t} else if (start < 0) {\n\t\t\trelativeStart = Math.max(size + start, 0);\n\t\t} else {\n\t\t\trelativeStart = Math.min(start, size);\n\t\t}\n\t\tif (end === undefined) {\n\t\t\trelativeEnd = size;\n\t\t} else if (end < 0) {\n\t\t\trelativeEnd = Math.max(size + end, 0);\n\t\t} else {\n\t\t\trelativeEnd = Math.min(end, size);\n\t\t}\n\t\tconst span = Math.max(relativeEnd - relativeStart, 0);\n\n\t\tconst buffer = this[BUFFER];\n\t\tconst slicedBuffer = buffer.slice(relativeStart, relativeStart + span);\n\t\tconst blob = new Blob([], { type: arguments[2] });\n\t\tblob[BUFFER] = slicedBuffer;\n\t\treturn blob;\n\t}\n}\n\nObject.defineProperties(Blob.prototype, {\n\tsize: { enumerable: true },\n\ttype: { enumerable: true },\n\tslice: { enumerable: true }\n});\n\nObject.defineProperty(Blob.prototype, Symbol.toStringTag, {\n\tvalue: 'Blob',\n\twritable: false,\n\tenumerable: false,\n\tconfigurable: true\n});\n\n/**\n * fetch-error.js\n *\n * FetchError interface for operational errors\n */\n\n/**\n * Create FetchError instance\n *\n * @param   String      message      Error message for human\n * @param   String      type         Error type for machine\n * @param   String      systemError  For Node.js system error\n * @return  FetchError\n */\nfunction FetchError(message, type, systemError) {\n  Error.call(this, message);\n\n  this.message = message;\n  this.type = type;\n\n  // when err.type is `system`, err.code contains system error code\n  if (systemError) {\n    this.code = this.errno = systemError.code;\n  }\n\n  // hide custom error implementation details from end-users\n  Error.captureStackTrace(this, this.constructor);\n}\n\nFetchError.prototype = Object.create(Error.prototype);\nFetchError.prototype.constructor = FetchError;\nFetchError.prototype.name = 'FetchError';\n\nlet convert;\ntry {\n\tconvert = require('encoding').convert;\n} catch (e) {}\n\nconst INTERNALS = Symbol('Body internals');\n\n// fix an issue where \"PassThrough\" isn't a named export for node <10\nconst PassThrough = Stream.PassThrough;\n\n/**\n * Body mixin\n *\n * Ref: https://fetch.spec.whatwg.org/#body\n *\n * @param   Stream  body  Readable stream\n * @param   Object  opts  Response options\n * @return  Void\n */\nfunction Body(body) {\n\tvar _this = this;\n\n\tvar _ref = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {},\n\t    _ref$size = _ref.size;\n\n\tlet size = _ref$size === undefined ? 0 : _ref$size;\n\tvar _ref$timeout = _ref.timeout;\n\tlet timeout = _ref$timeout === undefined ? 0 : _ref$timeout;\n\n\tif (body == null) {\n\t\t// body is undefined or null\n\t\tbody = null;\n\t} else if (isURLSearchParams(body)) {\n\t\t// body is a URLSearchParams\n\t\tbody = Buffer.from(body.toString());\n\t} else if (isBlob(body)) ; else if (Buffer.isBuffer(body)) ; else if (Object.prototype.toString.call(body) === '[object ArrayBuffer]') {\n\t\t// body is ArrayBuffer\n\t\tbody = Buffer.from(body);\n\t} else if (ArrayBuffer.isView(body)) {\n\t\t// body is ArrayBufferView\n\t\tbody = Buffer.from(body.buffer, body.byteOffset, body.byteLength);\n\t} else if (body instanceof Stream) ; else {\n\t\t// none of the above\n\t\t// coerce to string then buffer\n\t\tbody = Buffer.from(String(body));\n\t}\n\tthis[INTERNALS] = {\n\t\tbody,\n\t\tdisturbed: false,\n\t\terror: null\n\t};\n\tthis.size = size;\n\tthis.timeout = timeout;\n\n\tif (body instanceof Stream) {\n\t\tbody.on('error', function (err) {\n\t\t\tconst error = err.name === 'AbortError' ? err : new FetchError(`Invalid response body while trying to fetch ${_this.url}: ${err.message}`, 'system', err);\n\t\t\t_this[INTERNALS].error = error;\n\t\t});\n\t}\n}\n\nBody.prototype = {\n\tget body() {\n\t\treturn this[INTERNALS].body;\n\t},\n\n\tget bodyUsed() {\n\t\treturn this[INTERNALS].disturbed;\n\t},\n\n\t/**\n  * Decode response as ArrayBuffer\n  *\n  * @return  Promise\n  */\n\tarrayBuffer() {\n\t\treturn consumeBody.call(this).then(function (buf) {\n\t\t\treturn buf.buffer.slice(buf.byteOffset, buf.byteOffset + buf.byteLength);\n\t\t});\n\t},\n\n\t/**\n  * Return raw response as Blob\n  *\n  * @return Promise\n  */\n\tblob() {\n\t\tlet ct = this.headers && this.headers.get('content-type') || '';\n\t\treturn consumeBody.call(this).then(function (buf) {\n\t\t\treturn Object.assign(\n\t\t\t// Prevent copying\n\t\t\tnew Blob([], {\n\t\t\t\ttype: ct.toLowerCase()\n\t\t\t}), {\n\t\t\t\t[BUFFER]: buf\n\t\t\t});\n\t\t});\n\t},\n\n\t/**\n  * Decode response as json\n  *\n  * @return  Promise\n  */\n\tjson() {\n\t\tvar _this2 = this;\n\n\t\treturn consumeBody.call(this).then(function (buffer) {\n\t\t\ttry {\n\t\t\t\treturn JSON.parse(buffer.toString());\n\t\t\t} catch (err) {\n\t\t\t\treturn Body.Promise.reject(new FetchError(`invalid json response body at ${_this2.url} reason: ${err.message}`, 'invalid-json'));\n\t\t\t}\n\t\t});\n\t},\n\n\t/**\n  * Decode response as text\n  *\n  * @return  Promise\n  */\n\ttext() {\n\t\treturn consumeBody.call(this).then(function (buffer) {\n\t\t\treturn buffer.toString();\n\t\t});\n\t},\n\n\t/**\n  * Decode response as buffer (non-spec api)\n  *\n  * @return  Promise\n  */\n\tbuffer() {\n\t\treturn consumeBody.call(this);\n\t},\n\n\t/**\n  * Decode response as text, while automatically detecting the encoding and\n  * trying to decode to UTF-8 (non-spec api)\n  *\n  * @return  Promise\n  */\n\ttextConverted() {\n\t\tvar _this3 = this;\n\n\t\treturn consumeBody.call(this).then(function (buffer) {\n\t\t\treturn convertBody(buffer, _this3.headers);\n\t\t});\n\t}\n};\n\n// In browsers, all properties are enumerable.\nObject.defineProperties(Body.prototype, {\n\tbody: { enumerable: true },\n\tbodyUsed: { enumerable: true },\n\tarrayBuffer: { enumerable: true },\n\tblob: { enumerable: true },\n\tjson: { enumerable: true },\n\ttext: { enumerable: true }\n});\n\nBody.mixIn = function (proto) {\n\tfor (const name of Object.getOwnPropertyNames(Body.prototype)) {\n\t\t// istanbul ignore else: future proof\n\t\tif (!(name in proto)) {\n\t\t\tconst desc = Object.getOwnPropertyDescriptor(Body.prototype, name);\n\t\t\tObject.defineProperty(proto, name, desc);\n\t\t}\n\t}\n};\n\n/**\n * Consume and convert an entire Body to a Buffer.\n *\n * Ref: https://fetch.spec.whatwg.org/#concept-body-consume-body\n *\n * @return  Promise\n */\nfunction consumeBody() {\n\tvar _this4 = this;\n\n\tif (this[INTERNALS].disturbed) {\n\t\treturn Body.Promise.reject(new TypeError(`body used already for: ${this.url}`));\n\t}\n\n\tthis[INTERNALS].disturbed = true;\n\n\tif (this[INTERNALS].error) {\n\t\treturn Body.Promise.reject(this[INTERNALS].error);\n\t}\n\n\tlet body = this.body;\n\n\t// body is null\n\tif (body === null) {\n\t\treturn Body.Promise.resolve(Buffer.alloc(0));\n\t}\n\n\t// body is blob\n\tif (isBlob(body)) {\n\t\tbody = body.stream();\n\t}\n\n\t// body is buffer\n\tif (Buffer.isBuffer(body)) {\n\t\treturn Body.Promise.resolve(body);\n\t}\n\n\t// istanbul ignore if: should never happen\n\tif (!(body instanceof Stream)) {\n\t\treturn Body.Promise.resolve(Buffer.alloc(0));\n\t}\n\n\t// body is stream\n\t// get ready to actually consume the body\n\tlet accum = [];\n\tlet accumBytes = 0;\n\tlet abort = false;\n\n\treturn new Body.Promise(function (resolve, reject) {\n\t\tlet resTimeout;\n\n\t\t// allow timeout on slow response body\n\t\tif (_this4.timeout) {\n\t\t\tresTimeout = setTimeout(function () {\n\t\t\t\tabort = true;\n\t\t\t\treject(new FetchError(`Response timeout while trying to fetch ${_this4.url} (over ${_this4.timeout}ms)`, 'body-timeout'));\n\t\t\t}, _this4.timeout);\n\t\t}\n\n\t\t// handle stream errors\n\t\tbody.on('error', function (err) {\n\t\t\tif (err.name === 'AbortError') {\n\t\t\t\t// if the request was aborted, reject with this Error\n\t\t\t\tabort = true;\n\t\t\t\treject(err);\n\t\t\t} else {\n\t\t\t\t// other errors, such as incorrect content-encoding\n\t\t\t\treject(new FetchError(`Invalid response body while trying to fetch ${_this4.url}: ${err.message}`, 'system', err));\n\t\t\t}\n\t\t});\n\n\t\tbody.on('data', function (chunk) {\n\t\t\tif (abort || chunk === null) {\n\t\t\t\treturn;\n\t\t\t}\n\n\t\t\tif (_this4.size && accumBytes + chunk.length > _this4.size) {\n\t\t\t\tabort = true;\n\t\t\t\treject(new FetchError(`content size at ${_this4.url} over limit: ${_this4.size}`, 'max-size'));\n\t\t\t\treturn;\n\t\t\t}\n\n\t\t\taccumBytes += chunk.length;\n\t\t\taccum.push(chunk);\n\t\t});\n\n\t\tbody.on('end', function () {\n\t\t\tif (abort) {\n\t\t\t\treturn;\n\t\t\t}\n\n\t\t\tclearTimeout(resTimeout);\n\n\t\t\ttry {\n\t\t\t\tresolve(Buffer.concat(accum, accumBytes));\n\t\t\t} catch (err) {\n\t\t\t\t// handle streams that have accumulated too much data (issue #414)\n\t\t\t\treject(new FetchError(`Could not create Buffer from response body for ${_this4.url}: ${err.message}`, 'system', err));\n\t\t\t}\n\t\t});\n\t});\n}\n\n/**\n * Detect buffer encoding and convert to target encoding\n * ref: http://www.w3.org/TR/2011/WD-html5-20110113/parsing.html#determining-the-character-encoding\n *\n * @param   Buffer  buffer    Incoming buffer\n * @param   String  encoding  Target encoding\n * @return  String\n */\nfunction convertBody(buffer, headers) {\n\tif (typeof convert !== 'function') {\n\t\tthrow new Error('The package `encoding` must be installed to use the textConverted() function');\n\t}\n\n\tconst ct = headers.get('content-type');\n\tlet charset = 'utf-8';\n\tlet res, str;\n\n\t// header\n\tif (ct) {\n\t\tres = /charset=([^;]*)/i.exec(ct);\n\t}\n\n\t// no charset in content type, peek at response body for at most 1024 bytes\n\tstr = buffer.slice(0, 1024).toString();\n\n\t// html5\n\tif (!res && str) {\n\t\tres = /<meta.+?charset=(['\"])(.+?)\\1/i.exec(str);\n\t}\n\n\t// html4\n\tif (!res && str) {\n\t\tres = /<meta[\\s]+?http-equiv=(['\"])content-type\\1[\\s]+?content=(['\"])(.+?)\\2/i.exec(str);\n\t\tif (!res) {\n\t\t\tres = /<meta[\\s]+?content=(['\"])(.+?)\\1[\\s]+?http-equiv=(['\"])content-type\\3/i.exec(str);\n\t\t\tif (res) {\n\t\t\t\tres.pop(); // drop last quote\n\t\t\t}\n\t\t}\n\n\t\tif (res) {\n\t\t\tres = /charset=(.*)/i.exec(res.pop());\n\t\t}\n\t}\n\n\t// xml\n\tif (!res && str) {\n\t\tres = /<\\?xml.+?encoding=(['\"])(.+?)\\1/i.exec(str);\n\t}\n\n\t// found charset\n\tif (res) {\n\t\tcharset = res.pop();\n\n\t\t// prevent decode issues when sites use incorrect encoding\n\t\t// ref: https://hsivonen.fi/encoding-menu/\n\t\tif (charset === 'gb2312' || charset === 'gbk') {\n\t\t\tcharset = 'gb18030';\n\t\t}\n\t}\n\n\t// turn raw buffers into a single utf-8 buffer\n\treturn convert(buffer, 'UTF-8', charset).toString();\n}\n\n/**\n * Detect a URLSearchParams object\n * ref: https://github.com/bitinn/node-fetch/issues/296#issuecomment-307598143\n *\n * @param   Object  obj     Object to detect by type or brand\n * @return  String\n */\nfunction isURLSearchParams(obj) {\n\t// Duck-typing as a necessary condition.\n\tif (typeof obj !== 'object' || typeof obj.append !== 'function' || typeof obj.delete !== 'function' || typeof obj.get !== 'function' || typeof obj.getAll !== 'function' || typeof obj.has !== 'function' || typeof obj.set !== 'function') {\n\t\treturn false;\n\t}\n\n\t// Brand-checking and more duck-typing as optional condition.\n\treturn obj.constructor.name === 'URLSearchParams' || Object.prototype.toString.call(obj) === '[object URLSearchParams]' || typeof obj.sort === 'function';\n}\n\n/**\n * Check if `obj` is a W3C `Blob` object (which `File` inherits from)\n * @param  {*} obj\n * @return {boolean}\n */\nfunction isBlob(obj) {\n\treturn typeof obj === 'object' && typeof obj.arrayBuffer === 'function' && typeof obj.type === 'string' && typeof obj.stream === 'function' && typeof obj.constructor === 'function' && typeof obj.constructor.name === 'string' && /^(Blob|File)$/.test(obj.constructor.name) && /^(Blob|File)$/.test(obj[Symbol.toStringTag]);\n}\n\n/**\n * Clone body given Res/Req instance\n *\n * @param   Mixed  instance  Response or Request instance\n * @return  Mixed\n */\nfunction clone(instance) {\n\tlet p1, p2;\n\tlet body = instance.body;\n\n\t// don't allow cloning a used body\n\tif (instance.bodyUsed) {\n\t\tthrow new Error('cannot clone body after it is used');\n\t}\n\n\t// check that body is a stream and not form-data object\n\t// note: we can't clone the form-data object without having it as a dependency\n\tif (body instanceof Stream && typeof body.getBoundary !== 'function') {\n\t\t// tee instance body\n\t\tp1 = new PassThrough();\n\t\tp2 = new PassThrough();\n\t\tbody.pipe(p1);\n\t\tbody.pipe(p2);\n\t\t// set instance body to teed body and return the other teed body\n\t\tinstance[INTERNALS].body = p1;\n\t\tbody = p2;\n\t}\n\n\treturn body;\n}\n\n/**\n * Performs the operation \"extract a `Content-Type` value from |object|\" as\n * specified in the specification:\n * https://fetch.spec.whatwg.org/#concept-bodyinit-extract\n *\n * This function assumes that instance.body is present.\n *\n * @param   Mixed  instance  Any options.body input\n */\nfunction extractContentType(body) {\n\tif (body === null) {\n\t\t// body is null\n\t\treturn null;\n\t} else if (typeof body === 'string') {\n\t\t// body is string\n\t\treturn 'text/plain;charset=UTF-8';\n\t} else if (isURLSearchParams(body)) {\n\t\t// body is a URLSearchParams\n\t\treturn 'application/x-www-form-urlencoded;charset=UTF-8';\n\t} else if (isBlob(body)) {\n\t\t// body is blob\n\t\treturn body.type || null;\n\t} else if (Buffer.isBuffer(body)) {\n\t\t// body is buffer\n\t\treturn null;\n\t} else if (Object.prototype.toString.call(body) === '[object ArrayBuffer]') {\n\t\t// body is ArrayBuffer\n\t\treturn null;\n\t} else if (ArrayBuffer.isView(body)) {\n\t\t// body is ArrayBufferView\n\t\treturn null;\n\t} else if (typeof body.getBoundary === 'function') {\n\t\t// detect form data input from form-data module\n\t\treturn `multipart/form-data;boundary=${body.getBoundary()}`;\n\t} else if (body instanceof Stream) {\n\t\t// body is stream\n\t\t// can't really do much about this\n\t\treturn null;\n\t} else {\n\t\t// Body constructor defaults other things to string\n\t\treturn 'text/plain;charset=UTF-8';\n\t}\n}\n\n/**\n * The Fetch Standard treats this as if \"total bytes\" is a property on the body.\n * For us, we have to explicitly get it with a function.\n *\n * ref: https://fetch.spec.whatwg.org/#concept-body-total-bytes\n *\n * @param   Body    instance   Instance of Body\n * @return  Number?            Number of bytes, or null if not possible\n */\nfunction getTotalBytes(instance) {\n\tconst body = instance.body;\n\n\n\tif (body === null) {\n\t\t// body is null\n\t\treturn 0;\n\t} else if (isBlob(body)) {\n\t\treturn body.size;\n\t} else if (Buffer.isBuffer(body)) {\n\t\t// body is buffer\n\t\treturn body.length;\n\t} else if (body && typeof body.getLengthSync === 'function') {\n\t\t// detect form data input from form-data module\n\t\tif (body._lengthRetrievers && body._lengthRetrievers.length == 0 || // 1.x\n\t\tbody.hasKnownLength && body.hasKnownLength()) {\n\t\t\t// 2.x\n\t\t\treturn body.getLengthSync();\n\t\t}\n\t\treturn null;\n\t} else {\n\t\t// body is stream\n\t\treturn null;\n\t}\n}\n\n/**\n * Write a Body to a Node.js WritableStream (e.g. http.Request) object.\n *\n * @param   Body    instance   Instance of Body\n * @return  Void\n */\nfunction writeToStream(dest, instance) {\n\tconst body = instance.body;\n\n\n\tif (body === null) {\n\t\t// body is null\n\t\tdest.end();\n\t} else if (isBlob(body)) {\n\t\tbody.stream().pipe(dest);\n\t} else if (Buffer.isBuffer(body)) {\n\t\t// body is buffer\n\t\tdest.write(body);\n\t\tdest.end();\n\t} else {\n\t\t// body is stream\n\t\tbody.pipe(dest);\n\t}\n}\n\n// expose Promise\nBody.Promise = global.Promise;\n\n/**\n * headers.js\n *\n * Headers class offers convenient helpers\n */\n\nconst invalidTokenRegex = /[^\\^_`a-zA-Z\\-0-9!#$%&'*+.|~]/;\nconst invalidHeaderCharRegex = /[^\\t\\x20-\\x7e\\x80-\\xff]/;\n\nfunction validateName(name) {\n\tname = `${name}`;\n\tif (invalidTokenRegex.test(name) || name === '') {\n\t\tthrow new TypeError(`${name} is not a legal HTTP header name`);\n\t}\n}\n\nfunction validateValue(value) {\n\tvalue = `${value}`;\n\tif (invalidHeaderCharRegex.test(value)) {\n\t\tthrow new TypeError(`${value} is not a legal HTTP header value`);\n\t}\n}\n\n/**\n * Find the key in the map object given a header name.\n *\n * Returns undefined if not found.\n *\n * @param   String  name  Header name\n * @return  String|Undefined\n */\nfunction find(map, name) {\n\tname = name.toLowerCase();\n\tfor (const key in map) {\n\t\tif (key.toLowerCase() === name) {\n\t\t\treturn key;\n\t\t}\n\t}\n\treturn undefined;\n}\n\nconst MAP = Symbol('map');\nclass Headers {\n\t/**\n  * Headers class\n  *\n  * @param   Object  headers  Response headers\n  * @return  Void\n  */\n\tconstructor() {\n\t\tlet init = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : undefined;\n\n\t\tthis[MAP] = Object.create(null);\n\n\t\tif (init instanceof Headers) {\n\t\t\tconst rawHeaders = init.raw();\n\t\t\tconst headerNames = Object.keys(rawHeaders);\n\n\t\t\tfor (const headerName of headerNames) {\n\t\t\t\tfor (const value of rawHeaders[headerName]) {\n\t\t\t\t\tthis.append(headerName, value);\n\t\t\t\t}\n\t\t\t}\n\n\t\t\treturn;\n\t\t}\n\n\t\t// We don't worry about converting prop to ByteString here as append()\n\t\t// will handle it.\n\t\tif (init == null) ; else if (typeof init === 'object') {\n\t\t\tconst method = init[Symbol.iterator];\n\t\t\tif (method != null) {\n\t\t\t\tif (typeof method !== 'function') {\n\t\t\t\t\tthrow new TypeError('Header pairs must be iterable');\n\t\t\t\t}\n\n\t\t\t\t// sequence<sequence<ByteString>>\n\t\t\t\t// Note: per spec we have to first exhaust the lists then process them\n\t\t\t\tconst pairs = [];\n\t\t\t\tfor (const pair of init) {\n\t\t\t\t\tif (typeof pair !== 'object' || typeof pair[Symbol.iterator] !== 'function') {\n\t\t\t\t\t\tthrow new TypeError('Each header pair must be iterable');\n\t\t\t\t\t}\n\t\t\t\t\tpairs.push(Array.from(pair));\n\t\t\t\t}\n\n\t\t\t\tfor (const pair of pairs) {\n\t\t\t\t\tif (pair.length !== 2) {\n\t\t\t\t\t\tthrow new TypeError('Each header pair must be a name/value tuple');\n\t\t\t\t\t}\n\t\t\t\t\tthis.append(pair[0], pair[1]);\n\t\t\t\t}\n\t\t\t} else {\n\t\t\t\t// record<ByteString, ByteString>\n\t\t\t\tfor (const key of Object.keys(init)) {\n\t\t\t\t\tconst value = init[key];\n\t\t\t\t\tthis.append(key, value);\n\t\t\t\t}\n\t\t\t}\n\t\t} else {\n\t\t\tthrow new TypeError('Provided initializer must be an object');\n\t\t}\n\t}\n\n\t/**\n  * Return combined header value given name\n  *\n  * @param   String  name  Header name\n  * @return  Mixed\n  */\n\tget(name) {\n\t\tname = `${name}`;\n\t\tvalidateName(name);\n\t\tconst key = find(this[MAP], name);\n\t\tif (key === undefined) {\n\t\t\treturn null;\n\t\t}\n\n\t\treturn this[MAP][key].join(', ');\n\t}\n\n\t/**\n  * Iterate over all headers\n  *\n  * @param   Function  callback  Executed for each item with parameters (value, name, thisArg)\n  * @param   Boolean   thisArg   `this` context for callback function\n  * @return  Void\n  */\n\tforEach(callback) {\n\t\tlet thisArg = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : undefined;\n\n\t\tlet pairs = getHeaders(this);\n\t\tlet i = 0;\n\t\twhile (i < pairs.length) {\n\t\t\tvar _pairs$i = pairs[i];\n\t\t\tconst name = _pairs$i[0],\n\t\t\t      value = _pairs$i[1];\n\n\t\t\tcallback.call(thisArg, value, name, this);\n\t\t\tpairs = getHeaders(this);\n\t\t\ti++;\n\t\t}\n\t}\n\n\t/**\n  * Overwrite header values given name\n  *\n  * @param   String  name   Header name\n  * @param   String  value  Header value\n  * @return  Void\n  */\n\tset(name, value) {\n\t\tname = `${name}`;\n\t\tvalue = `${value}`;\n\t\tvalidateName(name);\n\t\tvalidateValue(value);\n\t\tconst key = find(this[MAP], name);\n\t\tthis[MAP][key !== undefined ? key : name] = [value];\n\t}\n\n\t/**\n  * Append a value onto existing header\n  *\n  * @param   String  name   Header name\n  * @param   String  value  Header value\n  * @return  Void\n  */\n\tappend(name, value) {\n\t\tname = `${name}`;\n\t\tvalue = `${value}`;\n\t\tvalidateName(name);\n\t\tvalidateValue(value);\n\t\tconst key = find(this[MAP], name);\n\t\tif (key !== undefined) {\n\t\t\tthis[MAP][key].push(value);\n\t\t} else {\n\t\t\tthis[MAP][name] = [value];\n\t\t}\n\t}\n\n\t/**\n  * Check for header name existence\n  *\n  * @param   String   name  Header name\n  * @return  Boolean\n  */\n\thas(name) {\n\t\tname = `${name}`;\n\t\tvalidateName(name);\n\t\treturn find(this[MAP], name) !== undefined;\n\t}\n\n\t/**\n  * Delete all header values given name\n  *\n  * @param   String  name  Header name\n  * @return  Void\n  */\n\tdelete(name) {\n\t\tname = `${name}`;\n\t\tvalidateName(name);\n\t\tconst key = find(this[MAP], name);\n\t\tif (key !== undefined) {\n\t\t\tdelete this[MAP][key];\n\t\t}\n\t}\n\n\t/**\n  * Return raw headers (non-spec api)\n  *\n  * @return  Object\n  */\n\traw() {\n\t\treturn this[MAP];\n\t}\n\n\t/**\n  * Get an iterator on keys.\n  *\n  * @return  Iterator\n  */\n\tkeys() {\n\t\treturn createHeadersIterator(this, 'key');\n\t}\n\n\t/**\n  * Get an iterator on values.\n  *\n  * @return  Iterator\n  */\n\tvalues() {\n\t\treturn createHeadersIterator(this, 'value');\n\t}\n\n\t/**\n  * Get an iterator on entries.\n  *\n  * This is the default iterator of the Headers object.\n  *\n  * @return  Iterator\n  */\n\t[Symbol.iterator]() {\n\t\treturn createHeadersIterator(this, 'key+value');\n\t}\n}\nHeaders.prototype.entries = Headers.prototype[Symbol.iterator];\n\nObject.defineProperty(Headers.prototype, Symbol.toStringTag, {\n\tvalue: 'Headers',\n\twritable: false,\n\tenumerable: false,\n\tconfigurable: true\n});\n\nObject.defineProperties(Headers.prototype, {\n\tget: { enumerable: true },\n\tforEach: { enumerable: true },\n\tset: { enumerable: true },\n\tappend: { enumerable: true },\n\thas: { enumerable: true },\n\tdelete: { enumerable: true },\n\tkeys: { enumerable: true },\n\tvalues: { enumerable: true },\n\tentries: { enumerable: true }\n});\n\nfunction getHeaders(headers) {\n\tlet kind = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : 'key+value';\n\n\tconst keys = Object.keys(headers[MAP]).sort();\n\treturn keys.map(kind === 'key' ? function (k) {\n\t\treturn k.toLowerCase();\n\t} : kind === 'value' ? function (k) {\n\t\treturn headers[MAP][k].join(', ');\n\t} : function (k) {\n\t\treturn [k.toLowerCase(), headers[MAP][k].join(', ')];\n\t});\n}\n\nconst INTERNAL = Symbol('internal');\n\nfunction createHeadersIterator(target, kind) {\n\tconst iterator = Object.create(HeadersIteratorPrototype);\n\titerator[INTERNAL] = {\n\t\ttarget,\n\t\tkind,\n\t\tindex: 0\n\t};\n\treturn iterator;\n}\n\nconst HeadersIteratorPrototype = Object.setPrototypeOf({\n\tnext() {\n\t\t// istanbul ignore if\n\t\tif (!this || Object.getPrototypeOf(this) !== HeadersIteratorPrototype) {\n\t\t\tthrow new TypeError('Value of `this` is not a HeadersIterator');\n\t\t}\n\n\t\tvar _INTERNAL = this[INTERNAL];\n\t\tconst target = _INTERNAL.target,\n\t\t      kind = _INTERNAL.kind,\n\t\t      index = _INTERNAL.index;\n\n\t\tconst values = getHeaders(target, kind);\n\t\tconst len = values.length;\n\t\tif (index >= len) {\n\t\t\treturn {\n\t\t\t\tvalue: undefined,\n\t\t\t\tdone: true\n\t\t\t};\n\t\t}\n\n\t\tthis[INTERNAL].index = index + 1;\n\n\t\treturn {\n\t\t\tvalue: values[index],\n\t\t\tdone: false\n\t\t};\n\t}\n}, Object.getPrototypeOf(Object.getPrototypeOf([][Symbol.iterator]())));\n\nObject.defineProperty(HeadersIteratorPrototype, Symbol.toStringTag, {\n\tvalue: 'HeadersIterator',\n\twritable: false,\n\tenumerable: false,\n\tconfigurable: true\n});\n\n/**\n * Export the Headers object in a form that Node.js can consume.\n *\n * @param   Headers  headers\n * @return  Object\n */\nfunction exportNodeCompatibleHeaders(headers) {\n\tconst obj = Object.assign({ __proto__: null }, headers[MAP]);\n\n\t// http.request() only supports string as Host header. This hack makes\n\t// specifying custom Host header possible.\n\tconst hostHeaderKey = find(headers[MAP], 'Host');\n\tif (hostHeaderKey !== undefined) {\n\t\tobj[hostHeaderKey] = obj[hostHeaderKey][0];\n\t}\n\n\treturn obj;\n}\n\n/**\n * Create a Headers object from an object of headers, ignoring those that do\n * not conform to HTTP grammar productions.\n *\n * @param   Object  obj  Object of headers\n * @return  Headers\n */\nfunction createHeadersLenient(obj) {\n\tconst headers = new Headers();\n\tfor (const name of Object.keys(obj)) {\n\t\tif (invalidTokenRegex.test(name)) {\n\t\t\tcontinue;\n\t\t}\n\t\tif (Array.isArray(obj[name])) {\n\t\t\tfor (const val of obj[name]) {\n\t\t\t\tif (invalidHeaderCharRegex.test(val)) {\n\t\t\t\t\tcontinue;\n\t\t\t\t}\n\t\t\t\tif (headers[MAP][name] === undefined) {\n\t\t\t\t\theaders[MAP][name] = [val];\n\t\t\t\t} else {\n\t\t\t\t\theaders[MAP][name].push(val);\n\t\t\t\t}\n\t\t\t}\n\t\t} else if (!invalidHeaderCharRegex.test(obj[name])) {\n\t\t\theaders[MAP][name] = [obj[name]];\n\t\t}\n\t}\n\treturn headers;\n}\n\nconst INTERNALS$1 = Symbol('Response internals');\n\n// fix an issue where \"STATUS_CODES\" aren't a named export for node <10\nconst STATUS_CODES = http.STATUS_CODES;\n\n/**\n * Response class\n *\n * @param   Stream  body  Readable stream\n * @param   Object  opts  Response options\n * @return  Void\n */\nclass Response {\n\tconstructor() {\n\t\tlet body = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : null;\n\t\tlet opts = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {};\n\n\t\tBody.call(this, body, opts);\n\n\t\tconst status = opts.status || 200;\n\t\tconst headers = new Headers(opts.headers);\n\n\t\tif (body != null && !headers.has('Content-Type')) {\n\t\t\tconst contentType = extractContentType(body);\n\t\t\tif (contentType) {\n\t\t\t\theaders.append('Content-Type', contentType);\n\t\t\t}\n\t\t}\n\n\t\tthis[INTERNALS$1] = {\n\t\t\turl: opts.url,\n\t\t\tstatus,\n\t\t\tstatusText: opts.statusText || STATUS_CODES[status],\n\t\t\theaders,\n\t\t\tcounter: opts.counter\n\t\t};\n\t}\n\n\tget url() {\n\t\treturn this[INTERNALS$1].url || '';\n\t}\n\n\tget status() {\n\t\treturn this[INTERNALS$1].status;\n\t}\n\n\t/**\n  * Convenience property representing if the request ended normally\n  */\n\tget ok() {\n\t\treturn this[INTERNALS$1].status >= 200 && this[INTERNALS$1].status < 300;\n\t}\n\n\tget redirected() {\n\t\treturn this[INTERNALS$1].counter > 0;\n\t}\n\n\tget statusText() {\n\t\treturn this[INTERNALS$1].statusText;\n\t}\n\n\tget headers() {\n\t\treturn this[INTERNALS$1].headers;\n\t}\n\n\t/**\n  * Clone this response\n  *\n  * @return  Response\n  */\n\tclone() {\n\t\treturn new Response(clone(this), {\n\t\t\turl: this.url,\n\t\t\tstatus: this.status,\n\t\t\tstatusText: this.statusText,\n\t\t\theaders: this.headers,\n\t\t\tok: this.ok,\n\t\t\tredirected: this.redirected\n\t\t});\n\t}\n}\n\nBody.mixIn(Response.prototype);\n\nObject.defineProperties(Response.prototype, {\n\turl: { enumerable: true },\n\tstatus: { enumerable: true },\n\tok: { enumerable: true },\n\tredirected: { enumerable: true },\n\tstatusText: { enumerable: true },\n\theaders: { enumerable: true },\n\tclone: { enumerable: true }\n});\n\nObject.defineProperty(Response.prototype, Symbol.toStringTag, {\n\tvalue: 'Response',\n\twritable: false,\n\tenumerable: false,\n\tconfigurable: true\n});\n\nconst INTERNALS$2 = Symbol('Request internals');\nconst URL = Url.URL || whatwgUrl.URL;\n\n// fix an issue where \"format\", \"parse\" aren't a named export for node <10\nconst parse_url = Url.parse;\nconst format_url = Url.format;\n\n/**\n * Wrapper around `new URL` to handle arbitrary URLs\n *\n * @param  {string} urlStr\n * @return {void}\n */\nfunction parseURL(urlStr) {\n\t/*\n \tCheck whether the URL is absolute or not\n \t\tScheme: https://tools.ietf.org/html/rfc3986#section-3.1\n \tAbsolute URL: https://tools.ietf.org/html/rfc3986#section-4.3\n */\n\tif (/^[a-zA-Z][a-zA-Z\\d+\\-.]*:/.exec(urlStr)) {\n\t\turlStr = new URL(urlStr).toString();\n\t}\n\n\t// Fallback to old implementation for arbitrary URLs\n\treturn parse_url(urlStr);\n}\n\nconst streamDestructionSupported = 'destroy' in Stream.Readable.prototype;\n\n/**\n * Check if a value is an instance of Request.\n *\n * @param   Mixed   input\n * @return  Boolean\n */\nfunction isRequest(input) {\n\treturn typeof input === 'object' && typeof input[INTERNALS$2] === 'object';\n}\n\nfunction isAbortSignal(signal) {\n\tconst proto = signal && typeof signal === 'object' && Object.getPrototypeOf(signal);\n\treturn !!(proto && proto.constructor.name === 'AbortSignal');\n}\n\n/**\n * Request class\n *\n * @param   Mixed   input  Url or Request instance\n * @param   Object  init   Custom options\n * @return  Void\n */\nclass Request {\n\tconstructor(input) {\n\t\tlet init = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {};\n\n\t\tlet parsedURL;\n\n\t\t// normalize input\n\t\tif (!isRequest(input)) {\n\t\t\tif (input && input.href) {\n\t\t\t\t// in order to support Node.js' Url objects; though WHATWG's URL objects\n\t\t\t\t// will fall into this branch also (since their `toString()` will return\n\t\t\t\t// `href` property anyway)\n\t\t\t\tparsedURL = parseURL(input.href);\n\t\t\t} else {\n\t\t\t\t// coerce input to a string before attempting to parse\n\t\t\t\tparsedURL = parseURL(`${input}`);\n\t\t\t}\n\t\t\tinput = {};\n\t\t} else {\n\t\t\tparsedURL = parseURL(input.url);\n\t\t}\n\n\t\tlet method = init.method || input.method || 'GET';\n\t\tmethod = method.toUpperCase();\n\n\t\tif ((init.body != null || isRequest(input) && input.body !== null) && (method === 'GET' || method === 'HEAD')) {\n\t\t\tthrow new TypeError('Request with GET/HEAD method cannot have body');\n\t\t}\n\n\t\tlet inputBody = init.body != null ? init.body : isRequest(input) && input.body !== null ? clone(input) : null;\n\n\t\tBody.call(this, inputBody, {\n\t\t\ttimeout: init.timeout || input.timeout || 0,\n\t\t\tsize: init.size || input.size || 0\n\t\t});\n\n\t\tconst headers = new Headers(init.headers || input.headers || {});\n\n\t\tif (inputBody != null && !headers.has('Content-Type')) {\n\t\t\tconst contentType = extractContentType(inputBody);\n\t\t\tif (contentType) {\n\t\t\t\theaders.append('Content-Type', contentType);\n\t\t\t}\n\t\t}\n\n\t\tlet signal = isRequest(input) ? input.signal : null;\n\t\tif ('signal' in init) signal = init.signal;\n\n\t\tif (signal != null && !isAbortSignal(signal)) {\n\t\t\tthrow new TypeError('Expected signal to be an instanceof AbortSignal');\n\t\t}\n\n\t\tthis[INTERNALS$2] = {\n\t\t\tmethod,\n\t\t\tredirect: init.redirect || input.redirect || 'follow',\n\t\t\theaders,\n\t\t\tparsedURL,\n\t\t\tsignal\n\t\t};\n\n\t\t// node-fetch-only options\n\t\tthis.follow = init.follow !== undefined ? init.follow : input.follow !== undefined ? input.follow : 20;\n\t\tthis.compress = init.compress !== undefined ? init.compress : input.compress !== undefined ? input.compress : true;\n\t\tthis.counter = init.counter || input.counter || 0;\n\t\tthis.agent = init.agent || input.agent;\n\t}\n\n\tget method() {\n\t\treturn this[INTERNALS$2].method;\n\t}\n\n\tget url() {\n\t\treturn format_url(this[INTERNALS$2].parsedURL);\n\t}\n\n\tget headers() {\n\t\treturn this[INTERNALS$2].headers;\n\t}\n\n\tget redirect() {\n\t\treturn this[INTERNALS$2].redirect;\n\t}\n\n\tget signal() {\n\t\treturn this[INTERNALS$2].signal;\n\t}\n\n\t/**\n  * Clone this request\n  *\n  * @return  Request\n  */\n\tclone() {\n\t\treturn new Request(this);\n\t}\n}\n\nBody.mixIn(Request.prototype);\n\nObject.defineProperty(Request.prototype, Symbol.toStringTag, {\n\tvalue: 'Request',\n\twritable: false,\n\tenumerable: false,\n\tconfigurable: true\n});\n\nObject.defineProperties(Request.prototype, {\n\tmethod: { enumerable: true },\n\turl: { enumerable: true },\n\theaders: { enumerable: true },\n\tredirect: { enumerable: true },\n\tclone: { enumerable: true },\n\tsignal: { enumerable: true }\n});\n\n/**\n * Convert a Request to Node.js http request options.\n *\n * @param   Request  A Request instance\n * @return  Object   The options object to be passed to http.request\n */\nfunction getNodeRequestOptions(request) {\n\tconst parsedURL = request[INTERNALS$2].parsedURL;\n\tconst headers = new Headers(request[INTERNALS$2].headers);\n\n\t// fetch step 1.3\n\tif (!headers.has('Accept')) {\n\t\theaders.set('Accept', '*/*');\n\t}\n\n\t// Basic fetch\n\tif (!parsedURL.protocol || !parsedURL.hostname) {\n\t\tthrow new TypeError('Only absolute URLs are supported');\n\t}\n\n\tif (!/^https?:$/.test(parsedURL.protocol)) {\n\t\tthrow new TypeError('Only HTTP(S) protocols are supported');\n\t}\n\n\tif (request.signal && request.body instanceof Stream.Readable && !streamDestructionSupported) {\n\t\tthrow new Error('Cancellation of streamed requests with AbortSignal is not supported in node < 8');\n\t}\n\n\t// HTTP-network-or-cache fetch steps 2.4-2.7\n\tlet contentLengthValue = null;\n\tif (request.body == null && /^(POST|PUT)$/i.test(request.method)) {\n\t\tcontentLengthValue = '0';\n\t}\n\tif (request.body != null) {\n\t\tconst totalBytes = getTotalBytes(request);\n\t\tif (typeof totalBytes === 'number') {\n\t\t\tcontentLengthValue = String(totalBytes);\n\t\t}\n\t}\n\tif (contentLengthValue) {\n\t\theaders.set('Content-Length', contentLengthValue);\n\t}\n\n\t// HTTP-network-or-cache fetch step 2.11\n\tif (!headers.has('User-Agent')) {\n\t\theaders.set('User-Agent', 'node-fetch/1.0 (+https://github.com/bitinn/node-fetch)');\n\t}\n\n\t// HTTP-network-or-cache fetch step 2.15\n\tif (request.compress && !headers.has('Accept-Encoding')) {\n\t\theaders.set('Accept-Encoding', 'gzip,deflate');\n\t}\n\n\tlet agent = request.agent;\n\tif (typeof agent === 'function') {\n\t\tagent = agent(parsedURL);\n\t}\n\n\tif (!headers.has('Connection') && !agent) {\n\t\theaders.set('Connection', 'close');\n\t}\n\n\t// HTTP-network fetch step 4.2\n\t// chunked encoding is handled by Node.js\n\n\treturn Object.assign({}, parsedURL, {\n\t\tmethod: request.method,\n\t\theaders: exportNodeCompatibleHeaders(headers),\n\t\tagent\n\t});\n}\n\n/**\n * abort-error.js\n *\n * AbortError interface for cancelled requests\n */\n\n/**\n * Create AbortError instance\n *\n * @param   String      message      Error message for human\n * @return  AbortError\n */\nfunction AbortError(message) {\n  Error.call(this, message);\n\n  this.type = 'aborted';\n  this.message = message;\n\n  // hide custom error implementation details from end-users\n  Error.captureStackTrace(this, this.constructor);\n}\n\nAbortError.prototype = Object.create(Error.prototype);\nAbortError.prototype.constructor = AbortError;\nAbortError.prototype.name = 'AbortError';\n\nconst URL$1 = Url.URL || whatwgUrl.URL;\n\n// fix an issue where \"PassThrough\", \"resolve\" aren't a named export for node <10\nconst PassThrough$1 = Stream.PassThrough;\n\nconst isDomainOrSubdomain = function isDomainOrSubdomain(destination, original) {\n\tconst orig = new URL$1(original).hostname;\n\tconst dest = new URL$1(destination).hostname;\n\n\treturn orig === dest || orig[orig.length - dest.length - 1] === '.' && orig.endsWith(dest);\n};\n\n/**\n * Fetch function\n *\n * @param   Mixed    url   Absolute url or Request instance\n * @param   Object   opts  Fetch options\n * @return  Promise\n */\nfunction fetch(url, opts) {\n\n\t// allow custom promise\n\tif (!fetch.Promise) {\n\t\tthrow new Error('native promise missing, set fetch.Promise to your favorite alternative');\n\t}\n\n\tBody.Promise = fetch.Promise;\n\n\t// wrap http.request into fetch\n\treturn new fetch.Promise(function (resolve, reject) {\n\t\t// build request object\n\t\tconst request = new Request(url, opts);\n\t\tconst options = getNodeRequestOptions(request);\n\n\t\tconst send = (options.protocol === 'https:' ? https : http).request;\n\t\tconst signal = request.signal;\n\n\t\tlet response = null;\n\n\t\tconst abort = function abort() {\n\t\t\tlet error = new AbortError('The user aborted a request.');\n\t\t\treject(error);\n\t\t\tif (request.body && request.body instanceof Stream.Readable) {\n\t\t\t\trequest.body.destroy(error);\n\t\t\t}\n\t\t\tif (!response || !response.body) return;\n\t\t\tresponse.body.emit('error', error);\n\t\t};\n\n\t\tif (signal && signal.aborted) {\n\t\t\tabort();\n\t\t\treturn;\n\t\t}\n\n\t\tconst abortAndFinalize = function abortAndFinalize() {\n\t\t\tabort();\n\t\t\tfinalize();\n\t\t};\n\n\t\t// send request\n\t\tconst req = send(options);\n\t\tlet reqTimeout;\n\n\t\tif (signal) {\n\t\t\tsignal.addEventListener('abort', abortAndFinalize);\n\t\t}\n\n\t\tfunction finalize() {\n\t\t\treq.abort();\n\t\t\tif (signal) signal.removeEventListener('abort', abortAndFinalize);\n\t\t\tclearTimeout(reqTimeout);\n\t\t}\n\n\t\tif (request.timeout) {\n\t\t\treq.once('socket', function (socket) {\n\t\t\t\treqTimeout = setTimeout(function () {\n\t\t\t\t\treject(new FetchError(`network timeout at: ${request.url}`, 'request-timeout'));\n\t\t\t\t\tfinalize();\n\t\t\t\t}, request.timeout);\n\t\t\t});\n\t\t}\n\n\t\treq.on('error', function (err) {\n\t\t\treject(new FetchError(`request to ${request.url} failed, reason: ${err.message}`, 'system', err));\n\t\t\tfinalize();\n\t\t});\n\n\t\treq.on('response', function (res) {\n\t\t\tclearTimeout(reqTimeout);\n\n\t\t\tconst headers = createHeadersLenient(res.headers);\n\n\t\t\t// HTTP fetch step 5\n\t\t\tif (fetch.isRedirect(res.statusCode)) {\n\t\t\t\t// HTTP fetch step 5.2\n\t\t\t\tconst location = headers.get('Location');\n\n\t\t\t\t// HTTP fetch step 5.3\n\t\t\t\tlet locationURL = null;\n\t\t\t\ttry {\n\t\t\t\t\tlocationURL = location === null ? null : new URL$1(location, request.url).toString();\n\t\t\t\t} catch (err) {\n\t\t\t\t\t// error here can only be invalid URL in Location: header\n\t\t\t\t\t// do not throw when options.redirect == manual\n\t\t\t\t\t// let the user extract the errorneous redirect URL\n\t\t\t\t\tif (request.redirect !== 'manual') {\n\t\t\t\t\t\treject(new FetchError(`uri requested responds with an invalid redirect URL: ${location}`, 'invalid-redirect'));\n\t\t\t\t\t\tfinalize();\n\t\t\t\t\t\treturn;\n\t\t\t\t\t}\n\t\t\t\t}\n\n\t\t\t\t// HTTP fetch step 5.5\n\t\t\t\tswitch (request.redirect) {\n\t\t\t\t\tcase 'error':\n\t\t\t\t\t\treject(new FetchError(`uri requested responds with a redirect, redirect mode is set to error: ${request.url}`, 'no-redirect'));\n\t\t\t\t\t\tfinalize();\n\t\t\t\t\t\treturn;\n\t\t\t\t\tcase 'manual':\n\t\t\t\t\t\t// node-fetch-specific step: make manual redirect a bit easier to use by setting the Location header value to the resolved URL.\n\t\t\t\t\t\tif (locationURL !== null) {\n\t\t\t\t\t\t\t// handle corrupted header\n\t\t\t\t\t\t\ttry {\n\t\t\t\t\t\t\t\theaders.set('Location', locationURL);\n\t\t\t\t\t\t\t} catch (err) {\n\t\t\t\t\t\t\t\t// istanbul ignore next: nodejs server prevent invalid response headers, we can't test this through normal request\n\t\t\t\t\t\t\t\treject(err);\n\t\t\t\t\t\t\t}\n\t\t\t\t\t\t}\n\t\t\t\t\t\tbreak;\n\t\t\t\t\tcase 'follow':\n\t\t\t\t\t\t// HTTP-redirect fetch step 2\n\t\t\t\t\t\tif (locationURL === null) {\n\t\t\t\t\t\t\tbreak;\n\t\t\t\t\t\t}\n\n\t\t\t\t\t\t// HTTP-redirect fetch step 5\n\t\t\t\t\t\tif (request.counter >= request.follow) {\n\t\t\t\t\t\t\treject(new FetchError(`maximum redirect reached at: ${request.url}`, 'max-redirect'));\n\t\t\t\t\t\t\tfinalize();\n\t\t\t\t\t\t\treturn;\n\t\t\t\t\t\t}\n\n\t\t\t\t\t\t// HTTP-redirect fetch step 6 (counter increment)\n\t\t\t\t\t\t// Create a new Request object.\n\t\t\t\t\t\tconst requestOpts = {\n\t\t\t\t\t\t\theaders: new Headers(request.headers),\n\t\t\t\t\t\t\tfollow: request.follow,\n\t\t\t\t\t\t\tcounter: request.counter + 1,\n\t\t\t\t\t\t\tagent: request.agent,\n\t\t\t\t\t\t\tcompress: request.compress,\n\t\t\t\t\t\t\tmethod: request.method,\n\t\t\t\t\t\t\tbody: request.body,\n\t\t\t\t\t\t\tsignal: request.signal,\n\t\t\t\t\t\t\ttimeout: request.timeout,\n\t\t\t\t\t\t\tsize: request.size\n\t\t\t\t\t\t};\n\n\t\t\t\t\t\tif (!isDomainOrSubdomain(request.url, locationURL)) {\n\t\t\t\t\t\t\tfor (const name of ['authorization', 'www-authenticate', 'cookie', 'cookie2']) {\n\t\t\t\t\t\t\t\trequestOpts.headers.delete(name);\n\t\t\t\t\t\t\t}\n\t\t\t\t\t\t}\n\n\t\t\t\t\t\t// HTTP-redirect fetch step 9\n\t\t\t\t\t\tif (res.statusCode !== 303 && request.body && getTotalBytes(request) === null) {\n\t\t\t\t\t\t\treject(new FetchError('Cannot follow redirect with body being a readable stream', 'unsupported-redirect'));\n\t\t\t\t\t\t\tfinalize();\n\t\t\t\t\t\t\treturn;\n\t\t\t\t\t\t}\n\n\t\t\t\t\t\t// HTTP-redirect fetch step 11\n\t\t\t\t\t\tif (res.statusCode === 303 || (res.statusCode === 301 || res.statusCode === 302) && request.method === 'POST') {\n\t\t\t\t\t\t\trequestOpts.method = 'GET';\n\t\t\t\t\t\t\trequestOpts.body = undefined;\n\t\t\t\t\t\t\trequestOpts.headers.delete('content-length');\n\t\t\t\t\t\t}\n\n\t\t\t\t\t\t// HTTP-redirect fetch step 15\n\t\t\t\t\t\tresolve(fetch(new Request(locationURL, requestOpts)));\n\t\t\t\t\t\tfinalize();\n\t\t\t\t\t\treturn;\n\t\t\t\t}\n\t\t\t}\n\n\t\t\t// prepare response\n\t\t\tres.once('end', function () {\n\t\t\t\tif (signal) signal.removeEventListener('abort', abortAndFinalize);\n\t\t\t});\n\t\t\tlet body = res.pipe(new PassThrough$1());\n\n\t\t\tconst response_options = {\n\t\t\t\turl: request.url,\n\t\t\t\tstatus: res.statusCode,\n\t\t\t\tstatusText: res.statusMessage,\n\t\t\t\theaders: headers,\n\t\t\t\tsize: request.size,\n\t\t\t\ttimeout: request.timeout,\n\t\t\t\tcounter: request.counter\n\t\t\t};\n\n\t\t\t// HTTP-network fetch step 12.1.1.3\n\t\t\tconst codings = headers.get('Content-Encoding');\n\n\t\t\t// HTTP-network fetch step 12.1.1.4: handle content codings\n\n\t\t\t// in following scenarios we ignore compression support\n\t\t\t// 1. compression support is disabled\n\t\t\t// 2. HEAD request\n\t\t\t// 3. no Content-Encoding header\n\t\t\t// 4. no content response (204)\n\t\t\t// 5. content not modified response (304)\n\t\t\tif (!request.compress || request.method === 'HEAD' || codings === null || res.statusCode === 204 || res.statusCode === 304) {\n\t\t\t\tresponse = new Response(body, response_options);\n\t\t\t\tresolve(response);\n\t\t\t\treturn;\n\t\t\t}\n\n\t\t\t// For Node v6+\n\t\t\t// Be less strict when decoding compressed responses, since sometimes\n\t\t\t// servers send slightly invalid responses that are still accepted\n\t\t\t// by common browsers.\n\t\t\t// Always using Z_SYNC_FLUSH is what cURL does.\n\t\t\tconst zlibOptions = {\n\t\t\t\tflush: zlib.Z_SYNC_FLUSH,\n\t\t\t\tfinishFlush: zlib.Z_SYNC_FLUSH\n\t\t\t};\n\n\t\t\t// for gzip\n\t\t\tif (codings == 'gzip' || codings == 'x-gzip') {\n\t\t\t\tbody = body.pipe(zlib.createGunzip(zlibOptions));\n\t\t\t\tresponse = new Response(body, response_options);\n\t\t\t\tresolve(response);\n\t\t\t\treturn;\n\t\t\t}\n\n\t\t\t// for deflate\n\t\t\tif (codings == 'deflate' || codings == 'x-deflate') {\n\t\t\t\t// handle the infamous raw deflate response from old servers\n\t\t\t\t// a hack for old IIS and Apache servers\n\t\t\t\tconst raw = res.pipe(new PassThrough$1());\n\t\t\t\traw.once('data', function (chunk) {\n\t\t\t\t\t// see http://stackoverflow.com/questions/37519828\n\t\t\t\t\tif ((chunk[0] & 0x0F) === 0x08) {\n\t\t\t\t\t\tbody = body.pipe(zlib.createInflate());\n\t\t\t\t\t} else {\n\t\t\t\t\t\tbody = body.pipe(zlib.createInflateRaw());\n\t\t\t\t\t}\n\t\t\t\t\tresponse = new Response(body, response_options);\n\t\t\t\t\tresolve(response);\n\t\t\t\t});\n\t\t\t\treturn;\n\t\t\t}\n\n\t\t\t// for br\n\t\t\tif (codings == 'br' && typeof zlib.createBrotliDecompress === 'function') {\n\t\t\t\tbody = body.pipe(zlib.createBrotliDecompress());\n\t\t\t\tresponse = new Response(body, response_options);\n\t\t\t\tresolve(response);\n\t\t\t\treturn;\n\t\t\t}\n\n\t\t\t// otherwise, use response as-is\n\t\t\tresponse = new Response(body, response_options);\n\t\t\tresolve(response);\n\t\t});\n\n\t\twriteToStream(req, request);\n\t});\n}\n/**\n * Redirect code matching\n *\n * @param   Number   code  Status code\n * @return  Boolean\n */\nfetch.isRedirect = function (code) {\n\treturn code === 301 || code === 302 || code === 303 || code === 307 || code === 308;\n};\n\n// expose Promise\nfetch.Promise = global.Promise;\n\nmodule.exports = exports = fetch;\nObject.defineProperty(exports, \"__esModule\", { value: true });\nexports.default = exports;\nexports.Headers = Headers;\nexports.Request = Request;\nexports.Response = Response;\nexports.FetchError = FetchError;\n","\"use strict\";\n\nvar punycode = require(\"punycode\");\nvar mappingTable = require(\"./lib/mappingTable.json\");\n\nvar PROCESSING_OPTIONS = {\n  TRANSITIONAL: 0,\n  NONTRANSITIONAL: 1\n};\n\nfunction normalize(str) { // fix bug in v8\n  return str.split('\\u0000').map(function (s) { return s.normalize('NFC'); }).join('\\u0000');\n}\n\nfunction findStatus(val) {\n  var start = 0;\n  var end = mappingTable.length - 1;\n\n  while (start <= end) {\n    var mid = Math.floor((start + end) / 2);\n\n    var target = mappingTable[mid];\n    if (target[0][0] <= val && target[0][1] >= val) {\n      return target;\n    } else if (target[0][0] > val) {\n      end = mid - 1;\n    } else {\n      start = mid + 1;\n    }\n  }\n\n  return null;\n}\n\nvar regexAstralSymbols = /[\\uD800-\\uDBFF][\\uDC00-\\uDFFF]/g;\n\nfunction countSymbols(string) {\n  return string\n    // replace every surrogate pair with a BMP symbol\n    .replace(regexAstralSymbols, '_')\n    // then get the length\n    .length;\n}\n\nfunction mapChars(domain_name, useSTD3, processing_option) {\n  var hasError = false;\n  var processed = \"\";\n\n  var len = countSymbols(domain_name);\n  for (var i = 0; i < len; ++i) {\n    var codePoint = domain_name.codePointAt(i);\n    var status = findStatus(codePoint);\n\n    switch (status[1]) {\n      case \"disallowed\":\n        hasError = true;\n        processed += String.fromCodePoint(codePoint);\n        break;\n      case \"ignored\":\n        break;\n      case \"mapped\":\n        processed += String.fromCodePoint.apply(String, status[2]);\n        break;\n      case \"deviation\":\n        if (processing_option === PROCESSING_OPTIONS.TRANSITIONAL) {\n          processed += String.fromCodePoint.apply(String, status[2]);\n        } else {\n          processed += String.fromCodePoint(codePoint);\n        }\n        break;\n      case \"valid\":\n        processed += String.fromCodePoint(codePoint);\n        break;\n      case \"disallowed_STD3_mapped\":\n        if (useSTD3) {\n          hasError = true;\n          processed += String.fromCodePoint(codePoint);\n        } else {\n          processed += String.fromCodePoint.apply(String, status[2]);\n        }\n        break;\n      case \"disallowed_STD3_valid\":\n        if (useSTD3) {\n          hasError = true;\n        }\n\n        processed += String.fromCodePoint(codePoint);\n        break;\n    }\n  }\n\n  return {\n    string: processed,\n    error: hasError\n  };\n}\n\nvar combiningMarksRegex = /[\\u0300-\\u036F\\u0483-\\u0489\\u0591-\\u05BD\\u05BF\\u05C1\\u05C2\\u05C4\\u05C5\\u05C7\\u0610-\\u061A\\u064B-\\u065F\\u0670\\u06D6-\\u06DC\\u06DF-\\u06E4\\u06E7\\u06E8\\u06EA-\\u06ED\\u0711\\u0730-\\u074A\\u07A6-\\u07B0\\u07EB-\\u07F3\\u0816-\\u0819\\u081B-\\u0823\\u0825-\\u0827\\u0829-\\u082D\\u0859-\\u085B\\u08E4-\\u0903\\u093A-\\u093C\\u093E-\\u094F\\u0951-\\u0957\\u0962\\u0963\\u0981-\\u0983\\u09BC\\u09BE-\\u09C4\\u09C7\\u09C8\\u09CB-\\u09CD\\u09D7\\u09E2\\u09E3\\u0A01-\\u0A03\\u0A3C\\u0A3E-\\u0A42\\u0A47\\u0A48\\u0A4B-\\u0A4D\\u0A51\\u0A70\\u0A71\\u0A75\\u0A81-\\u0A83\\u0ABC\\u0ABE-\\u0AC5\\u0AC7-\\u0AC9\\u0ACB-\\u0ACD\\u0AE2\\u0AE3\\u0B01-\\u0B03\\u0B3C\\u0B3E-\\u0B44\\u0B47\\u0B48\\u0B4B-\\u0B4D\\u0B56\\u0B57\\u0B62\\u0B63\\u0B82\\u0BBE-\\u0BC2\\u0BC6-\\u0BC8\\u0BCA-\\u0BCD\\u0BD7\\u0C00-\\u0C03\\u0C3E-\\u0C44\\u0C46-\\u0C48\\u0C4A-\\u0C4D\\u0C55\\u0C56\\u0C62\\u0C63\\u0C81-\\u0C83\\u0CBC\\u0CBE-\\u0CC4\\u0CC6-\\u0CC8\\u0CCA-\\u0CCD\\u0CD5\\u0CD6\\u0CE2\\u0CE3\\u0D01-\\u0D03\\u0D3E-\\u0D44\\u0D46-\\u0D48\\u0D4A-\\u0D4D\\u0D57\\u0D62\\u0D63\\u0D82\\u0D83\\u0DCA\\u0DCF-\\u0DD4\\u0DD6\\u0DD8-\\u0DDF\\u0DF2\\u0DF3\\u0E31\\u0E34-\\u0E3A\\u0E47-\\u0E4E\\u0EB1\\u0EB4-\\u0EB9\\u0EBB\\u0EBC\\u0EC8-\\u0ECD\\u0F18\\u0F19\\u0F35\\u0F37\\u0F39\\u0F3E\\u0F3F\\u0F71-\\u0F84\\u0F86\\u0F87\\u0F8D-\\u0F97\\u0F99-\\u0FBC\\u0FC6\\u102B-\\u103E\\u1056-\\u1059\\u105E-\\u1060\\u1062-\\u1064\\u1067-\\u106D\\u1071-\\u1074\\u1082-\\u108D\\u108F\\u109A-\\u109D\\u135D-\\u135F\\u1712-\\u1714\\u1732-\\u1734\\u1752\\u1753\\u1772\\u1773\\u17B4-\\u17D3\\u17DD\\u180B-\\u180D\\u18A9\\u1920-\\u192B\\u1930-\\u193B\\u19B0-\\u19C0\\u19C8\\u19C9\\u1A17-\\u1A1B\\u1A55-\\u1A5E\\u1A60-\\u1A7C\\u1A7F\\u1AB0-\\u1ABE\\u1B00-\\u1B04\\u1B34-\\u1B44\\u1B6B-\\u1B73\\u1B80-\\u1B82\\u1BA1-\\u1BAD\\u1BE6-\\u1BF3\\u1C24-\\u1C37\\u1CD0-\\u1CD2\\u1CD4-\\u1CE8\\u1CED\\u1CF2-\\u1CF4\\u1CF8\\u1CF9\\u1DC0-\\u1DF5\\u1DFC-\\u1DFF\\u20D0-\\u20F0\\u2CEF-\\u2CF1\\u2D7F\\u2DE0-\\u2DFF\\u302A-\\u302F\\u3099\\u309A\\uA66F-\\uA672\\uA674-\\uA67D\\uA69F\\uA6F0\\uA6F1\\uA802\\uA806\\uA80B\\uA823-\\uA827\\uA880\\uA881\\uA8B4-\\uA8C4\\uA8E0-\\uA8F1\\uA926-\\uA92D\\uA947-\\uA953\\uA980-\\uA983\\uA9B3-\\uA9C0\\uA9E5\\uAA29-\\uAA36\\uAA43\\uAA4C\\uAA4D\\uAA7B-\\uAA7D\\uAAB0\\uAAB2-\\uAAB4\\uAAB7\\uAAB8\\uAABE\\uAABF\\uAAC1\\uAAEB-\\uAAEF\\uAAF5\\uAAF6\\uABE3-\\uABEA\\uABEC\\uABED\\uFB1E\\uFE00-\\uFE0F\\uFE20-\\uFE2D]|\\uD800[\\uDDFD\\uDEE0\\uDF76-\\uDF7A]|\\uD802[\\uDE01-\\uDE03\\uDE05\\uDE06\\uDE0C-\\uDE0F\\uDE38-\\uDE3A\\uDE3F\\uDEE5\\uDEE6]|\\uD804[\\uDC00-\\uDC02\\uDC38-\\uDC46\\uDC7F-\\uDC82\\uDCB0-\\uDCBA\\uDD00-\\uDD02\\uDD27-\\uDD34\\uDD73\\uDD80-\\uDD82\\uDDB3-\\uDDC0\\uDE2C-\\uDE37\\uDEDF-\\uDEEA\\uDF01-\\uDF03\\uDF3C\\uDF3E-\\uDF44\\uDF47\\uDF48\\uDF4B-\\uDF4D\\uDF57\\uDF62\\uDF63\\uDF66-\\uDF6C\\uDF70-\\uDF74]|\\uD805[\\uDCB0-\\uDCC3\\uDDAF-\\uDDB5\\uDDB8-\\uDDC0\\uDE30-\\uDE40\\uDEAB-\\uDEB7]|\\uD81A[\\uDEF0-\\uDEF4\\uDF30-\\uDF36]|\\uD81B[\\uDF51-\\uDF7E\\uDF8F-\\uDF92]|\\uD82F[\\uDC9D\\uDC9E]|\\uD834[\\uDD65-\\uDD69\\uDD6D-\\uDD72\\uDD7B-\\uDD82\\uDD85-\\uDD8B\\uDDAA-\\uDDAD\\uDE42-\\uDE44]|\\uD83A[\\uDCD0-\\uDCD6]|\\uDB40[\\uDD00-\\uDDEF]/;\n\nfunction validateLabel(label, processing_option) {\n  if (label.substr(0, 4) === \"xn--\") {\n    label = punycode.toUnicode(label);\n    processing_option = PROCESSING_OPTIONS.NONTRANSITIONAL;\n  }\n\n  var error = false;\n\n  if (normalize(label) !== label ||\n      (label[3] === \"-\" && label[4] === \"-\") ||\n      label[0] === \"-\" || label[label.length - 1] === \"-\" ||\n      label.indexOf(\".\") !== -1 ||\n      label.search(combiningMarksRegex) === 0) {\n    error = true;\n  }\n\n  var len = countSymbols(label);\n  for (var i = 0; i < len; ++i) {\n    var status = findStatus(label.codePointAt(i));\n    if ((processing === PROCESSING_OPTIONS.TRANSITIONAL && status[1] !== \"valid\") ||\n        (processing === PROCESSING_OPTIONS.NONTRANSITIONAL &&\n         status[1] !== \"valid\" && status[1] !== \"deviation\")) {\n      error = true;\n      break;\n    }\n  }\n\n  return {\n    label: label,\n    error: error\n  };\n}\n\nfunction processing(domain_name, useSTD3, processing_option) {\n  var result = mapChars(domain_name, useSTD3, processing_option);\n  result.string = normalize(result.string);\n\n  var labels = result.string.split(\".\");\n  for (var i = 0; i < labels.length; ++i) {\n    try {\n      var validation = validateLabel(labels[i]);\n      labels[i] = validation.label;\n      result.error = result.error || validation.error;\n    } catch(e) {\n      result.error = true;\n    }\n  }\n\n  return {\n    string: labels.join(\".\"),\n    error: result.error\n  };\n}\n\nmodule.exports.toASCII = function(domain_name, useSTD3, processing_option, verifyDnsLength) {\n  var result = processing(domain_name, useSTD3, processing_option);\n  var labels = result.string.split(\".\");\n  labels = labels.map(function(l) {\n    try {\n      return punycode.toASCII(l);\n    } catch(e) {\n      result.error = true;\n      return l;\n    }\n  });\n\n  if (verifyDnsLength) {\n    var total = labels.slice(0, labels.length - 1).join(\".\").length;\n    if (total.length > 253 || total.length === 0) {\n      result.error = true;\n    }\n\n    for (var i=0; i < labels.length; ++i) {\n      if (labels.length > 63 || labels.length === 0) {\n        result.error = true;\n        break;\n      }\n    }\n  }\n\n  if (result.error) return null;\n  return labels.join(\".\");\n};\n\nmodule.exports.toUnicode = function(domain_name, useSTD3) {\n  var result = processing(domain_name, useSTD3, PROCESSING_OPTIONS.NONTRANSITIONAL);\n\n  return {\n    domain: result.string,\n    error: result.error\n  };\n};\n\nmodule.exports.PROCESSING_OPTIONS = PROCESSING_OPTIONS;\n","module.exports = require('./lib/tunnel');\n","'use strict';\n\nvar net = require('net');\nvar tls = require('tls');\nvar http = require('http');\nvar https = require('https');\nvar events = require('events');\nvar assert = require('assert');\nvar util = require('util');\n\n\nexports.httpOverHttp = httpOverHttp;\nexports.httpsOverHttp = httpsOverHttp;\nexports.httpOverHttps = httpOverHttps;\nexports.httpsOverHttps = httpsOverHttps;\n\n\nfunction httpOverHttp(options) {\n  var agent = new TunnelingAgent(options);\n  agent.request = http.request;\n  return agent;\n}\n\nfunction httpsOverHttp(options) {\n  var agent = new TunnelingAgent(options);\n  agent.request = http.request;\n  agent.createSocket = createSecureSocket;\n  agent.defaultPort = 443;\n  return agent;\n}\n\nfunction httpOverHttps(options) {\n  var agent = new TunnelingAgent(options);\n  agent.request = https.request;\n  return agent;\n}\n\nfunction httpsOverHttps(options) {\n  var agent = new TunnelingAgent(options);\n  agent.request = https.request;\n  agent.createSocket = createSecureSocket;\n  agent.defaultPort = 443;\n  return agent;\n}\n\n\nfunction TunnelingAgent(options) {\n  var self = this;\n  self.options = options || {};\n  self.proxyOptions = self.options.proxy || {};\n  self.maxSockets = self.options.maxSockets || http.Agent.defaultMaxSockets;\n  self.requests = [];\n  self.sockets = [];\n\n  self.on('free', function onFree(socket, host, port, localAddress) {\n    var options = toOptions(host, port, localAddress);\n    for (var i = 0, len = self.requests.length; i < len; ++i) {\n      var pending = self.requests[i];\n      if (pending.host === options.host && pending.port === options.port) {\n        // Detect the request to connect same origin server,\n        // reuse the connection.\n        self.requests.splice(i, 1);\n        pending.request.onSocket(socket);\n        return;\n      }\n    }\n    socket.destroy();\n    self.removeSocket(socket);\n  });\n}\nutil.inherits(TunnelingAgent, events.EventEmitter);\n\nTunnelingAgent.prototype.addRequest = function addRequest(req, host, port, localAddress) {\n  var self = this;\n  var options = mergeOptions({request: req}, self.options, toOptions(host, port, localAddress));\n\n  if (self.sockets.length >= this.maxSockets) {\n    // We are over limit so we'll add it to the queue.\n    self.requests.push(options);\n    return;\n  }\n\n  // If we are under maxSockets create a new one.\n  self.createSocket(options, function(socket) {\n    socket.on('free', onFree);\n    socket.on('close', onCloseOrRemove);\n    socket.on('agentRemove', onCloseOrRemove);\n    req.onSocket(socket);\n\n    function onFree() {\n      self.emit('free', socket, options);\n    }\n\n    function onCloseOrRemove(err) {\n      self.removeSocket(socket);\n      socket.removeListener('free', onFree);\n      socket.removeListener('close', onCloseOrRemove);\n      socket.removeListener('agentRemove', onCloseOrRemove);\n    }\n  });\n};\n\nTunnelingAgent.prototype.createSocket = function createSocket(options, cb) {\n  var self = this;\n  var placeholder = {};\n  self.sockets.push(placeholder);\n\n  var connectOptions = mergeOptions({}, self.proxyOptions, {\n    method: 'CONNECT',\n    path: options.host + ':' + options.port,\n    agent: false,\n    headers: {\n      host: options.host + ':' + options.port\n    }\n  });\n  if (options.localAddress) {\n    connectOptions.localAddress = options.localAddress;\n  }\n  if (connectOptions.proxyAuth) {\n    connectOptions.headers = connectOptions.headers || {};\n    connectOptions.headers['Proxy-Authorization'] = 'Basic ' +\n        new Buffer(connectOptions.proxyAuth).toString('base64');\n  }\n\n  debug('making CONNECT request');\n  var connectReq = self.request(connectOptions);\n  connectReq.useChunkedEncodingByDefault = false; // for v0.6\n  connectReq.once('response', onResponse); // for v0.6\n  connectReq.once('upgrade', onUpgrade);   // for v0.6\n  connectReq.once('connect', onConnect);   // for v0.7 or later\n  connectReq.once('error', onError);\n  connectReq.end();\n\n  function onResponse(res) {\n    // Very hacky. This is necessary to avoid http-parser leaks.\n    res.upgrade = true;\n  }\n\n  function onUpgrade(res, socket, head) {\n    // Hacky.\n    process.nextTick(function() {\n      onConnect(res, socket, head);\n    });\n  }\n\n  function onConnect(res, socket, head) {\n    connectReq.removeAllListeners();\n    socket.removeAllListeners();\n\n    if (res.statusCode !== 200) {\n      debug('tunneling socket could not be established, statusCode=%d',\n        res.statusCode);\n      socket.destroy();\n      var error = new Error('tunneling socket could not be established, ' +\n        'statusCode=' + res.statusCode);\n      error.code = 'ECONNRESET';\n      options.request.emit('error', error);\n      self.removeSocket(placeholder);\n      return;\n    }\n    if (head.length > 0) {\n      debug('got illegal response body from proxy');\n      socket.destroy();\n      var error = new Error('got illegal response body from proxy');\n      error.code = 'ECONNRESET';\n      options.request.emit('error', error);\n      self.removeSocket(placeholder);\n      return;\n    }\n    debug('tunneling connection has established');\n    self.sockets[self.sockets.indexOf(placeholder)] = socket;\n    return cb(socket);\n  }\n\n  function onError(cause) {\n    connectReq.removeAllListeners();\n\n    debug('tunneling socket could not be established, cause=%s\\n',\n          cause.message, cause.stack);\n    var error = new Error('tunneling socket could not be established, ' +\n                          'cause=' + cause.message);\n    error.code = 'ECONNRESET';\n    options.request.emit('error', error);\n    self.removeSocket(placeholder);\n  }\n};\n\nTunnelingAgent.prototype.removeSocket = function removeSocket(socket) {\n  var pos = this.sockets.indexOf(socket)\n  if (pos === -1) {\n    return;\n  }\n  this.sockets.splice(pos, 1);\n\n  var pending = this.requests.shift();\n  if (pending) {\n    // If we have pending requests and a socket gets closed a new one\n    // needs to be created to take over in the pool for the one that closed.\n    this.createSocket(pending, function(socket) {\n      pending.request.onSocket(socket);\n    });\n  }\n};\n\nfunction createSecureSocket(options, cb) {\n  var self = this;\n  TunnelingAgent.prototype.createSocket.call(self, options, function(socket) {\n    var hostHeader = options.request.getHeader('host');\n    var tlsOptions = mergeOptions({}, self.options, {\n      socket: socket,\n      servername: hostHeader ? hostHeader.replace(/:.*$/, '') : options.host\n    });\n\n    // 0 is dummy port for v0.6\n    var secureSocket = tls.connect(0, tlsOptions);\n    self.sockets[self.sockets.indexOf(socket)] = secureSocket;\n    cb(secureSocket);\n  });\n}\n\n\nfunction toOptions(host, port, localAddress) {\n  if (typeof host === 'string') { // since v0.10\n    return {\n      host: host,\n      port: port,\n      localAddress: localAddress\n    };\n  }\n  return host; // for v0.11 or later\n}\n\nfunction mergeOptions(target) {\n  for (var i = 1, len = arguments.length; i < len; ++i) {\n    var overrides = arguments[i];\n    if (typeof overrides === 'object') {\n      var keys = Object.keys(overrides);\n      for (var j = 0, keyLen = keys.length; j < keyLen; ++j) {\n        var k = keys[j];\n        if (overrides[k] !== undefined) {\n          target[k] = overrides[k];\n        }\n      }\n    }\n  }\n  return target;\n}\n\n\nvar debug;\nif (process.env.NODE_DEBUG && /\\btunnel\\b/.test(process.env.NODE_DEBUG)) {\n  debug = function() {\n    var args = Array.prototype.slice.call(arguments);\n    if (typeof args[0] === 'string') {\n      args[0] = 'TUNNEL: ' + args[0];\n    } else {\n      args.unshift('TUNNEL:');\n    }\n    console.error.apply(console, args);\n  }\n} else {\n  debug = function() {};\n}\nexports.debug = debug; // for test\n","\"use strict\";\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\nObject.defineProperty(exports, \"v1\", {\n  enumerable: true,\n  get: function () {\n    return _v.default;\n  }\n});\nObject.defineProperty(exports, \"v3\", {\n  enumerable: true,\n  get: function () {\n    return _v2.default;\n  }\n});\nObject.defineProperty(exports, \"v4\", {\n  enumerable: true,\n  get: function () {\n    return _v3.default;\n  }\n});\nObject.defineProperty(exports, \"v5\", {\n  enumerable: true,\n  get: function () {\n    return _v4.default;\n  }\n});\nObject.defineProperty(exports, \"NIL\", {\n  enumerable: true,\n  get: function () {\n    return _nil.default;\n  }\n});\nObject.defineProperty(exports, \"version\", {\n  enumerable: true,\n  get: function () {\n    return _version.default;\n  }\n});\nObject.defineProperty(exports, \"validate\", {\n  enumerable: true,\n  get: function () {\n    return _validate.default;\n  }\n});\nObject.defineProperty(exports, \"stringify\", {\n  enumerable: true,\n  get: function () {\n    return _stringify.default;\n  }\n});\nObject.defineProperty(exports, \"parse\", {\n  enumerable: true,\n  get: function () {\n    return _parse.default;\n  }\n});\n\nvar _v = _interopRequireDefault(require(\"./v1.js\"));\n\nvar _v2 = _interopRequireDefault(require(\"./v3.js\"));\n\nvar _v3 = _interopRequireDefault(require(\"./v4.js\"));\n\nvar _v4 = _interopRequireDefault(require(\"./v5.js\"));\n\nvar _nil = _interopRequireDefault(require(\"./nil.js\"));\n\nvar _version = _interopRequireDefault(require(\"./version.js\"));\n\nvar _validate = _interopRequireDefault(require(\"./validate.js\"));\n\nvar _stringify = _interopRequireDefault(require(\"./stringify.js\"));\n\nvar _parse = _interopRequireDefault(require(\"./parse.js\"));\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }","\"use strict\";\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\nexports.default = void 0;\n\nvar _crypto = _interopRequireDefault(require(\"crypto\"));\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\nfunction md5(bytes) {\n  if (Array.isArray(bytes)) {\n    bytes = Buffer.from(bytes);\n  } else if (typeof bytes === 'string') {\n    bytes = Buffer.from(bytes, 'utf8');\n  }\n\n  return _crypto.default.createHash('md5').update(bytes).digest();\n}\n\nvar _default = md5;\nexports.default = _default;","\"use strict\";\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\nexports.default = void 0;\nvar _default = '00000000-0000-0000-0000-000000000000';\nexports.default = _default;","\"use strict\";\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\nexports.default = void 0;\n\nvar _validate = _interopRequireDefault(require(\"./validate.js\"));\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\nfunction parse(uuid) {\n  if (!(0, _validate.default)(uuid)) {\n    throw TypeError('Invalid UUID');\n  }\n\n  let v;\n  const arr = new Uint8Array(16); // Parse ########-....-....-....-............\n\n  arr[0] = (v = parseInt(uuid.slice(0, 8), 16)) >>> 24;\n  arr[1] = v >>> 16 & 0xff;\n  arr[2] = v >>> 8 & 0xff;\n  arr[3] = v & 0xff; // Parse ........-####-....-....-............\n\n  arr[4] = (v = parseInt(uuid.slice(9, 13), 16)) >>> 8;\n  arr[5] = v & 0xff; // Parse ........-....-####-....-............\n\n  arr[6] = (v = parseInt(uuid.slice(14, 18), 16)) >>> 8;\n  arr[7] = v & 0xff; // Parse ........-....-....-####-............\n\n  arr[8] = (v = parseInt(uuid.slice(19, 23), 16)) >>> 8;\n  arr[9] = v & 0xff; // Parse ........-....-....-....-############\n  // (Use \"/\" to avoid 32-bit truncation when bit-shifting high-order bytes)\n\n  arr[10] = (v = parseInt(uuid.slice(24, 36), 16)) / 0x10000000000 & 0xff;\n  arr[11] = v / 0x100000000 & 0xff;\n  arr[12] = v >>> 24 & 0xff;\n  arr[13] = v >>> 16 & 0xff;\n  arr[14] = v >>> 8 & 0xff;\n  arr[15] = v & 0xff;\n  return arr;\n}\n\nvar _default = parse;\nexports.default = _default;","\"use strict\";\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\nexports.default = void 0;\nvar _default = /^(?:[0-9a-f]{8}-[0-9a-f]{4}-[1-5][0-9a-f]{3}-[89ab][0-9a-f]{3}-[0-9a-f]{12}|00000000-0000-0000-0000-000000000000)$/i;\nexports.default = _default;","\"use strict\";\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\nexports.default = rng;\n\nvar _crypto = _interopRequireDefault(require(\"crypto\"));\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\nconst rnds8Pool = new Uint8Array(256); // # of random values to pre-allocate\n\nlet poolPtr = rnds8Pool.length;\n\nfunction rng() {\n  if (poolPtr > rnds8Pool.length - 16) {\n    _crypto.default.randomFillSync(rnds8Pool);\n\n    poolPtr = 0;\n  }\n\n  return rnds8Pool.slice(poolPtr, poolPtr += 16);\n}","\"use strict\";\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\nexports.default = void 0;\n\nvar _crypto = _interopRequireDefault(require(\"crypto\"));\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\nfunction sha1(bytes) {\n  if (Array.isArray(bytes)) {\n    bytes = Buffer.from(bytes);\n  } else if (typeof bytes === 'string') {\n    bytes = Buffer.from(bytes, 'utf8');\n  }\n\n  return _crypto.default.createHash('sha1').update(bytes).digest();\n}\n\nvar _default = sha1;\nexports.default = _default;","\"use strict\";\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\nexports.default = void 0;\n\nvar _validate = _interopRequireDefault(require(\"./validate.js\"));\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\n/**\n * Convert array of 16 byte values to UUID string format of the form:\n * XXXXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXXXX\n */\nconst byteToHex = [];\n\nfor (let i = 0; i < 256; ++i) {\n  byteToHex.push((i + 0x100).toString(16).substr(1));\n}\n\nfunction stringify(arr, offset = 0) {\n  // Note: Be careful editing this code!  It's been tuned for performance\n  // and works in ways you may not expect. See https://github.com/uuidjs/uuid/pull/434\n  const uuid = (byteToHex[arr[offset + 0]] + byteToHex[arr[offset + 1]] + byteToHex[arr[offset + 2]] + byteToHex[arr[offset + 3]] + '-' + byteToHex[arr[offset + 4]] + byteToHex[arr[offset + 5]] + '-' + byteToHex[arr[offset + 6]] + byteToHex[arr[offset + 7]] + '-' + byteToHex[arr[offset + 8]] + byteToHex[arr[offset + 9]] + '-' + byteToHex[arr[offset + 10]] + byteToHex[arr[offset + 11]] + byteToHex[arr[offset + 12]] + byteToHex[arr[offset + 13]] + byteToHex[arr[offset + 14]] + byteToHex[arr[offset + 15]]).toLowerCase(); // Consistency check for valid UUID.  If this throws, it's likely due to one\n  // of the following:\n  // - One or more input array values don't map to a hex octet (leading to\n  // \"undefined\" in the uuid)\n  // - Invalid input values for the RFC `version` or `variant` fields\n\n  if (!(0, _validate.default)(uuid)) {\n    throw TypeError('Stringified UUID is invalid');\n  }\n\n  return uuid;\n}\n\nvar _default = stringify;\nexports.default = _default;","\"use strict\";\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\nexports.default = void 0;\n\nvar _rng = _interopRequireDefault(require(\"./rng.js\"));\n\nvar _stringify = _interopRequireDefault(require(\"./stringify.js\"));\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\n// **`v1()` - Generate time-based UUID**\n//\n// Inspired by https://github.com/LiosK/UUID.js\n// and http://docs.python.org/library/uuid.html\nlet _nodeId;\n\nlet _clockseq; // Previous uuid creation time\n\n\nlet _lastMSecs = 0;\nlet _lastNSecs = 0; // See https://github.com/uuidjs/uuid for API details\n\nfunction v1(options, buf, offset) {\n  let i = buf && offset || 0;\n  const b = buf || new Array(16);\n  options = options || {};\n  let node = options.node || _nodeId;\n  let clockseq = options.clockseq !== undefined ? options.clockseq : _clockseq; // node and clockseq need to be initialized to random values if they're not\n  // specified.  We do this lazily to minimize issues related to insufficient\n  // system entropy.  See #189\n\n  if (node == null || clockseq == null) {\n    const seedBytes = options.random || (options.rng || _rng.default)();\n\n    if (node == null) {\n      // Per 4.5, create and 48-bit node id, (47 random bits + multicast bit = 1)\n      node = _nodeId = [seedBytes[0] | 0x01, seedBytes[1], seedBytes[2], seedBytes[3], seedBytes[4], seedBytes[5]];\n    }\n\n    if (clockseq == null) {\n      // Per 4.2.2, randomize (14 bit) clockseq\n      clockseq = _clockseq = (seedBytes[6] << 8 | seedBytes[7]) & 0x3fff;\n    }\n  } // UUID timestamps are 100 nano-second units since the Gregorian epoch,\n  // (1582-10-15 00:00).  JSNumbers aren't precise enough for this, so\n  // time is handled internally as 'msecs' (integer milliseconds) and 'nsecs'\n  // (100-nanoseconds offset from msecs) since unix epoch, 1970-01-01 00:00.\n\n\n  let msecs = options.msecs !== undefined ? options.msecs : Date.now(); // Per 4.2.1.2, use count of uuid's generated during the current clock\n  // cycle to simulate higher resolution clock\n\n  let nsecs = options.nsecs !== undefined ? options.nsecs : _lastNSecs + 1; // Time since last uuid creation (in msecs)\n\n  const dt = msecs - _lastMSecs + (nsecs - _lastNSecs) / 10000; // Per 4.2.1.2, Bump clockseq on clock regression\n\n  if (dt < 0 && options.clockseq === undefined) {\n    clockseq = clockseq + 1 & 0x3fff;\n  } // Reset nsecs if clock regresses (new clockseq) or we've moved onto a new\n  // time interval\n\n\n  if ((dt < 0 || msecs > _lastMSecs) && options.nsecs === undefined) {\n    nsecs = 0;\n  } // Per 4.2.1.2 Throw error if too many uuids are requested\n\n\n  if (nsecs >= 10000) {\n    throw new Error(\"uuid.v1(): Can't create more than 10M uuids/sec\");\n  }\n\n  _lastMSecs = msecs;\n  _lastNSecs = nsecs;\n  _clockseq = clockseq; // Per 4.1.4 - Convert from unix epoch to Gregorian epoch\n\n  msecs += 12219292800000; // `time_low`\n\n  const tl = ((msecs & 0xfffffff) * 10000 + nsecs) % 0x100000000;\n  b[i++] = tl >>> 24 & 0xff;\n  b[i++] = tl >>> 16 & 0xff;\n  b[i++] = tl >>> 8 & 0xff;\n  b[i++] = tl & 0xff; // `time_mid`\n\n  const tmh = msecs / 0x100000000 * 10000 & 0xfffffff;\n  b[i++] = tmh >>> 8 & 0xff;\n  b[i++] = tmh & 0xff; // `time_high_and_version`\n\n  b[i++] = tmh >>> 24 & 0xf | 0x10; // include version\n\n  b[i++] = tmh >>> 16 & 0xff; // `clock_seq_hi_and_reserved` (Per 4.2.2 - include variant)\n\n  b[i++] = clockseq >>> 8 | 0x80; // `clock_seq_low`\n\n  b[i++] = clockseq & 0xff; // `node`\n\n  for (let n = 0; n < 6; ++n) {\n    b[i + n] = node[n];\n  }\n\n  return buf || (0, _stringify.default)(b);\n}\n\nvar _default = v1;\nexports.default = _default;","\"use strict\";\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\nexports.default = void 0;\n\nvar _v = _interopRequireDefault(require(\"./v35.js\"));\n\nvar _md = _interopRequireDefault(require(\"./md5.js\"));\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\nconst v3 = (0, _v.default)('v3', 0x30, _md.default);\nvar _default = v3;\nexports.default = _default;","\"use strict\";\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\nexports.default = _default;\nexports.URL = exports.DNS = void 0;\n\nvar _stringify = _interopRequireDefault(require(\"./stringify.js\"));\n\nvar _parse = _interopRequireDefault(require(\"./parse.js\"));\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\nfunction stringToBytes(str) {\n  str = unescape(encodeURIComponent(str)); // UTF8 escape\n\n  const bytes = [];\n\n  for (let i = 0; i < str.length; ++i) {\n    bytes.push(str.charCodeAt(i));\n  }\n\n  return bytes;\n}\n\nconst DNS = '6ba7b810-9dad-11d1-80b4-00c04fd430c8';\nexports.DNS = DNS;\nconst URL = '6ba7b811-9dad-11d1-80b4-00c04fd430c8';\nexports.URL = URL;\n\nfunction _default(name, version, hashfunc) {\n  function generateUUID(value, namespace, buf, offset) {\n    if (typeof value === 'string') {\n      value = stringToBytes(value);\n    }\n\n    if (typeof namespace === 'string') {\n      namespace = (0, _parse.default)(namespace);\n    }\n\n    if (namespace.length !== 16) {\n      throw TypeError('Namespace must be array-like (16 iterable integer values, 0-255)');\n    } // Compute hash of namespace and value, Per 4.3\n    // Future: Use spread syntax when supported on all platforms, e.g. `bytes =\n    // hashfunc([...namespace, ... value])`\n\n\n    let bytes = new Uint8Array(16 + value.length);\n    bytes.set(namespace);\n    bytes.set(value, namespace.length);\n    bytes = hashfunc(bytes);\n    bytes[6] = bytes[6] & 0x0f | version;\n    bytes[8] = bytes[8] & 0x3f | 0x80;\n\n    if (buf) {\n      offset = offset || 0;\n\n      for (let i = 0; i < 16; ++i) {\n        buf[offset + i] = bytes[i];\n      }\n\n      return buf;\n    }\n\n    return (0, _stringify.default)(bytes);\n  } // Function#name is not settable on some platforms (#270)\n\n\n  try {\n    generateUUID.name = name; // eslint-disable-next-line no-empty\n  } catch (err) {} // For CommonJS default export support\n\n\n  generateUUID.DNS = DNS;\n  generateUUID.URL = URL;\n  return generateUUID;\n}","\"use strict\";\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\nexports.default = void 0;\n\nvar _rng = _interopRequireDefault(require(\"./rng.js\"));\n\nvar _stringify = _interopRequireDefault(require(\"./stringify.js\"));\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\nfunction v4(options, buf, offset) {\n  options = options || {};\n\n  const rnds = options.random || (options.rng || _rng.default)(); // Per 4.4, set bits for version and `clock_seq_hi_and_reserved`\n\n\n  rnds[6] = rnds[6] & 0x0f | 0x40;\n  rnds[8] = rnds[8] & 0x3f | 0x80; // Copy bytes to buffer, if provided\n\n  if (buf) {\n    offset = offset || 0;\n\n    for (let i = 0; i < 16; ++i) {\n      buf[offset + i] = rnds[i];\n    }\n\n    return buf;\n  }\n\n  return (0, _stringify.default)(rnds);\n}\n\nvar _default = v4;\nexports.default = _default;","\"use strict\";\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\nexports.default = void 0;\n\nvar _v = _interopRequireDefault(require(\"./v35.js\"));\n\nvar _sha = _interopRequireDefault(require(\"./sha1.js\"));\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\nconst v5 = (0, _v.default)('v5', 0x50, _sha.default);\nvar _default = v5;\nexports.default = _default;","\"use strict\";\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\nexports.default = void 0;\n\nvar _regex = _interopRequireDefault(require(\"./regex.js\"));\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\nfunction validate(uuid) {\n  return typeof uuid === 'string' && _regex.default.test(uuid);\n}\n\nvar _default = validate;\nexports.default = _default;","\"use strict\";\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\nexports.default = void 0;\n\nvar _validate = _interopRequireDefault(require(\"./validate.js\"));\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\nfunction version(uuid) {\n  if (!(0, _validate.default)(uuid)) {\n    throw TypeError('Invalid UUID');\n  }\n\n  return parseInt(uuid.substr(14, 1), 16);\n}\n\nvar _default = version;\nexports.default = _default;","\"use strict\";\n\nvar conversions = {};\nmodule.exports = conversions;\n\nfunction sign(x) {\n    return x < 0 ? -1 : 1;\n}\n\nfunction evenRound(x) {\n    // Round x to the nearest integer, choosing the even integer if it lies halfway between two.\n    if ((x % 1) === 0.5 && (x & 1) === 0) { // [even number].5; round down (i.e. floor)\n        return Math.floor(x);\n    } else {\n        return Math.round(x);\n    }\n}\n\nfunction createNumberConversion(bitLength, typeOpts) {\n    if (!typeOpts.unsigned) {\n        --bitLength;\n    }\n    const lowerBound = typeOpts.unsigned ? 0 : -Math.pow(2, bitLength);\n    const upperBound = Math.pow(2, bitLength) - 1;\n\n    const moduloVal = typeOpts.moduloBitLength ? Math.pow(2, typeOpts.moduloBitLength) : Math.pow(2, bitLength);\n    const moduloBound = typeOpts.moduloBitLength ? Math.pow(2, typeOpts.moduloBitLength - 1) : Math.pow(2, bitLength - 1);\n\n    return function(V, opts) {\n        if (!opts) opts = {};\n\n        let x = +V;\n\n        if (opts.enforceRange) {\n            if (!Number.isFinite(x)) {\n                throw new TypeError(\"Argument is not a finite number\");\n            }\n\n            x = sign(x) * Math.floor(Math.abs(x));\n            if (x < lowerBound || x > upperBound) {\n                throw new TypeError(\"Argument is not in byte range\");\n            }\n\n            return x;\n        }\n\n        if (!isNaN(x) && opts.clamp) {\n            x = evenRound(x);\n\n            if (x < lowerBound) x = lowerBound;\n            if (x > upperBound) x = upperBound;\n            return x;\n        }\n\n        if (!Number.isFinite(x) || x === 0) {\n            return 0;\n        }\n\n        x = sign(x) * Math.floor(Math.abs(x));\n        x = x % moduloVal;\n\n        if (!typeOpts.unsigned && x >= moduloBound) {\n            return x - moduloVal;\n        } else if (typeOpts.unsigned) {\n            if (x < 0) {\n              x += moduloVal;\n            } else if (x === -0) { // don't return negative zero\n              return 0;\n            }\n        }\n\n        return x;\n    }\n}\n\nconversions[\"void\"] = function () {\n    return undefined;\n};\n\nconversions[\"boolean\"] = function (val) {\n    return !!val;\n};\n\nconversions[\"byte\"] = createNumberConversion(8, { unsigned: false });\nconversions[\"octet\"] = createNumberConversion(8, { unsigned: true });\n\nconversions[\"short\"] = createNumberConversion(16, { unsigned: false });\nconversions[\"unsigned short\"] = createNumberConversion(16, { unsigned: true });\n\nconversions[\"long\"] = createNumberConversion(32, { unsigned: false });\nconversions[\"unsigned long\"] = createNumberConversion(32, { unsigned: true });\n\nconversions[\"long long\"] = createNumberConversion(32, { unsigned: false, moduloBitLength: 64 });\nconversions[\"unsigned long long\"] = createNumberConversion(32, { unsigned: true, moduloBitLength: 64 });\n\nconversions[\"double\"] = function (V) {\n    const x = +V;\n\n    if (!Number.isFinite(x)) {\n        throw new TypeError(\"Argument is not a finite floating-point value\");\n    }\n\n    return x;\n};\n\nconversions[\"unrestricted double\"] = function (V) {\n    const x = +V;\n\n    if (isNaN(x)) {\n        throw new TypeError(\"Argument is NaN\");\n    }\n\n    return x;\n};\n\n// not quite valid, but good enough for JS\nconversions[\"float\"] = conversions[\"double\"];\nconversions[\"unrestricted float\"] = conversions[\"unrestricted double\"];\n\nconversions[\"DOMString\"] = function (V, opts) {\n    if (!opts) opts = {};\n\n    if (opts.treatNullAsEmptyString && V === null) {\n        return \"\";\n    }\n\n    return String(V);\n};\n\nconversions[\"ByteString\"] = function (V, opts) {\n    const x = String(V);\n    let c = undefined;\n    for (let i = 0; (c = x.codePointAt(i)) !== undefined; ++i) {\n        if (c > 255) {\n            throw new TypeError(\"Argument is not a valid bytestring\");\n        }\n    }\n\n    return x;\n};\n\nconversions[\"USVString\"] = function (V) {\n    const S = String(V);\n    const n = S.length;\n    const U = [];\n    for (let i = 0; i < n; ++i) {\n        const c = S.charCodeAt(i);\n        if (c < 0xD800 || c > 0xDFFF) {\n            U.push(String.fromCodePoint(c));\n        } else if (0xDC00 <= c && c <= 0xDFFF) {\n            U.push(String.fromCodePoint(0xFFFD));\n        } else {\n            if (i === n - 1) {\n                U.push(String.fromCodePoint(0xFFFD));\n            } else {\n                const d = S.charCodeAt(i + 1);\n                if (0xDC00 <= d && d <= 0xDFFF) {\n                    const a = c & 0x3FF;\n                    const b = d & 0x3FF;\n                    U.push(String.fromCodePoint((2 << 15) + (2 << 9) * a + b));\n                    ++i;\n                } else {\n                    U.push(String.fromCodePoint(0xFFFD));\n                }\n            }\n        }\n    }\n\n    return U.join('');\n};\n\nconversions[\"Date\"] = function (V, opts) {\n    if (!(V instanceof Date)) {\n        throw new TypeError(\"Argument is not a Date object\");\n    }\n    if (isNaN(V)) {\n        return undefined;\n    }\n\n    return V;\n};\n\nconversions[\"RegExp\"] = function (V, opts) {\n    if (!(V instanceof RegExp)) {\n        V = new RegExp(V);\n    }\n\n    return V;\n};\n","\"use strict\";\nconst usm = require(\"./url-state-machine\");\n\nexports.implementation = class URLImpl {\n  constructor(constructorArgs) {\n    const url = constructorArgs[0];\n    const base = constructorArgs[1];\n\n    let parsedBase = null;\n    if (base !== undefined) {\n      parsedBase = usm.basicURLParse(base);\n      if (parsedBase === \"failure\") {\n        throw new TypeError(\"Invalid base URL\");\n      }\n    }\n\n    const parsedURL = usm.basicURLParse(url, { baseURL: parsedBase });\n    if (parsedURL === \"failure\") {\n      throw new TypeError(\"Invalid URL\");\n    }\n\n    this._url = parsedURL;\n\n    // TODO: query stuff\n  }\n\n  get href() {\n    return usm.serializeURL(this._url);\n  }\n\n  set href(v) {\n    const parsedURL = usm.basicURLParse(v);\n    if (parsedURL === \"failure\") {\n      throw new TypeError(\"Invalid URL\");\n    }\n\n    this._url = parsedURL;\n  }\n\n  get origin() {\n    return usm.serializeURLOrigin(this._url);\n  }\n\n  get protocol() {\n    return this._url.scheme + \":\";\n  }\n\n  set protocol(v) {\n    usm.basicURLParse(v + \":\", { url: this._url, stateOverride: \"scheme start\" });\n  }\n\n  get username() {\n    return this._url.username;\n  }\n\n  set username(v) {\n    if (usm.cannotHaveAUsernamePasswordPort(this._url)) {\n      return;\n    }\n\n    usm.setTheUsername(this._url, v);\n  }\n\n  get password() {\n    return this._url.password;\n  }\n\n  set password(v) {\n    if (usm.cannotHaveAUsernamePasswordPort(this._url)) {\n      return;\n    }\n\n    usm.setThePassword(this._url, v);\n  }\n\n  get host() {\n    const url = this._url;\n\n    if (url.host === null) {\n      return \"\";\n    }\n\n    if (url.port === null) {\n      return usm.serializeHost(url.host);\n    }\n\n    return usm.serializeHost(url.host) + \":\" + usm.serializeInteger(url.port);\n  }\n\n  set host(v) {\n    if (this._url.cannotBeABaseURL) {\n      return;\n    }\n\n    usm.basicURLParse(v, { url: this._url, stateOverride: \"host\" });\n  }\n\n  get hostname() {\n    if (this._url.host === null) {\n      return \"\";\n    }\n\n    return usm.serializeHost(this._url.host);\n  }\n\n  set hostname(v) {\n    if (this._url.cannotBeABaseURL) {\n      return;\n    }\n\n    usm.basicURLParse(v, { url: this._url, stateOverride: \"hostname\" });\n  }\n\n  get port() {\n    if (this._url.port === null) {\n      return \"\";\n    }\n\n    return usm.serializeInteger(this._url.port);\n  }\n\n  set port(v) {\n    if (usm.cannotHaveAUsernamePasswordPort(this._url)) {\n      return;\n    }\n\n    if (v === \"\") {\n      this._url.port = null;\n    } else {\n      usm.basicURLParse(v, { url: this._url, stateOverride: \"port\" });\n    }\n  }\n\n  get pathname() {\n    if (this._url.cannotBeABaseURL) {\n      return this._url.path[0];\n    }\n\n    if (this._url.path.length === 0) {\n      return \"\";\n    }\n\n    return \"/\" + this._url.path.join(\"/\");\n  }\n\n  set pathname(v) {\n    if (this._url.cannotBeABaseURL) {\n      return;\n    }\n\n    this._url.path = [];\n    usm.basicURLParse(v, { url: this._url, stateOverride: \"path start\" });\n  }\n\n  get search() {\n    if (this._url.query === null || this._url.query === \"\") {\n      return \"\";\n    }\n\n    return \"?\" + this._url.query;\n  }\n\n  set search(v) {\n    // TODO: query stuff\n\n    const url = this._url;\n\n    if (v === \"\") {\n      url.query = null;\n      return;\n    }\n\n    const input = v[0] === \"?\" ? v.substring(1) : v;\n    url.query = \"\";\n    usm.basicURLParse(input, { url, stateOverride: \"query\" });\n  }\n\n  get hash() {\n    if (this._url.fragment === null || this._url.fragment === \"\") {\n      return \"\";\n    }\n\n    return \"#\" + this._url.fragment;\n  }\n\n  set hash(v) {\n    if (v === \"\") {\n      this._url.fragment = null;\n      return;\n    }\n\n    const input = v[0] === \"#\" ? v.substring(1) : v;\n    this._url.fragment = \"\";\n    usm.basicURLParse(input, { url: this._url, stateOverride: \"fragment\" });\n  }\n\n  toJSON() {\n    return this.href;\n  }\n};\n","\"use strict\";\n\nconst conversions = require(\"webidl-conversions\");\nconst utils = require(\"./utils.js\");\nconst Impl = require(\".//URL-impl.js\");\n\nconst impl = utils.implSymbol;\n\nfunction URL(url) {\n  if (!this || this[impl] || !(this instanceof URL)) {\n    throw new TypeError(\"Failed to construct 'URL': Please use the 'new' operator, this DOM object constructor cannot be called as a function.\");\n  }\n  if (arguments.length < 1) {\n    throw new TypeError(\"Failed to construct 'URL': 1 argument required, but only \" + arguments.length + \" present.\");\n  }\n  const args = [];\n  for (let i = 0; i < arguments.length && i < 2; ++i) {\n    args[i] = arguments[i];\n  }\n  args[0] = conversions[\"USVString\"](args[0]);\n  if (args[1] !== undefined) {\n  args[1] = conversions[\"USVString\"](args[1]);\n  }\n\n  module.exports.setup(this, args);\n}\n\nURL.prototype.toJSON = function toJSON() {\n  if (!this || !module.exports.is(this)) {\n    throw new TypeError(\"Illegal invocation\");\n  }\n  const args = [];\n  for (let i = 0; i < arguments.length && i < 0; ++i) {\n    args[i] = arguments[i];\n  }\n  return this[impl].toJSON.apply(this[impl], args);\n};\nObject.defineProperty(URL.prototype, \"href\", {\n  get() {\n    return this[impl].href;\n  },\n  set(V) {\n    V = conversions[\"USVString\"](V);\n    this[impl].href = V;\n  },\n  enumerable: true,\n  configurable: true\n});\n\nURL.prototype.toString = function () {\n  if (!this || !module.exports.is(this)) {\n    throw new TypeError(\"Illegal invocation\");\n  }\n  return this.href;\n};\n\nObject.defineProperty(URL.prototype, \"origin\", {\n  get() {\n    return this[impl].origin;\n  },\n  enumerable: true,\n  configurable: true\n});\n\nObject.defineProperty(URL.prototype, \"protocol\", {\n  get() {\n    return this[impl].protocol;\n  },\n  set(V) {\n    V = conversions[\"USVString\"](V);\n    this[impl].protocol = V;\n  },\n  enumerable: true,\n  configurable: true\n});\n\nObject.defineProperty(URL.prototype, \"username\", {\n  get() {\n    return this[impl].username;\n  },\n  set(V) {\n    V = conversions[\"USVString\"](V);\n    this[impl].username = V;\n  },\n  enumerable: true,\n  configurable: true\n});\n\nObject.defineProperty(URL.prototype, \"password\", {\n  get() {\n    return this[impl].password;\n  },\n  set(V) {\n    V = conversions[\"USVString\"](V);\n    this[impl].password = V;\n  },\n  enumerable: true,\n  configurable: true\n});\n\nObject.defineProperty(URL.prototype, \"host\", {\n  get() {\n    return this[impl].host;\n  },\n  set(V) {\n    V = conversions[\"USVString\"](V);\n    this[impl].host = V;\n  },\n  enumerable: true,\n  configurable: true\n});\n\nObject.defineProperty(URL.prototype, \"hostname\", {\n  get() {\n    return this[impl].hostname;\n  },\n  set(V) {\n    V = conversions[\"USVString\"](V);\n    this[impl].hostname = V;\n  },\n  enumerable: true,\n  configurable: true\n});\n\nObject.defineProperty(URL.prototype, \"port\", {\n  get() {\n    return this[impl].port;\n  },\n  set(V) {\n    V = conversions[\"USVString\"](V);\n    this[impl].port = V;\n  },\n  enumerable: true,\n  configurable: true\n});\n\nObject.defineProperty(URL.prototype, \"pathname\", {\n  get() {\n    return this[impl].pathname;\n  },\n  set(V) {\n    V = conversions[\"USVString\"](V);\n    this[impl].pathname = V;\n  },\n  enumerable: true,\n  configurable: true\n});\n\nObject.defineProperty(URL.prototype, \"search\", {\n  get() {\n    return this[impl].search;\n  },\n  set(V) {\n    V = conversions[\"USVString\"](V);\n    this[impl].search = V;\n  },\n  enumerable: true,\n  configurable: true\n});\n\nObject.defineProperty(URL.prototype, \"hash\", {\n  get() {\n    return this[impl].hash;\n  },\n  set(V) {\n    V = conversions[\"USVString\"](V);\n    this[impl].hash = V;\n  },\n  enumerable: true,\n  configurable: true\n});\n\n\nmodule.exports = {\n  is(obj) {\n    return !!obj && obj[impl] instanceof Impl.implementation;\n  },\n  create(constructorArgs, privateData) {\n    let obj = Object.create(URL.prototype);\n    this.setup(obj, constructorArgs, privateData);\n    return obj;\n  },\n  setup(obj, constructorArgs, privateData) {\n    if (!privateData) privateData = {};\n    privateData.wrapper = obj;\n\n    obj[impl] = new Impl.implementation(constructorArgs, privateData);\n    obj[impl][utils.wrapperSymbol] = obj;\n  },\n  interface: URL,\n  expose: {\n    Window: { URL: URL },\n    Worker: { URL: URL }\n  }\n};\n\n","\"use strict\";\n\nexports.URL = require(\"./URL\").interface;\nexports.serializeURL = require(\"./url-state-machine\").serializeURL;\nexports.serializeURLOrigin = require(\"./url-state-machine\").serializeURLOrigin;\nexports.basicURLParse = require(\"./url-state-machine\").basicURLParse;\nexports.setTheUsername = require(\"./url-state-machine\").setTheUsername;\nexports.setThePassword = require(\"./url-state-machine\").setThePassword;\nexports.serializeHost = require(\"./url-state-machine\").serializeHost;\nexports.serializeInteger = require(\"./url-state-machine\").serializeInteger;\nexports.parseURL = require(\"./url-state-machine\").parseURL;\n","\"use strict\";\r\nconst punycode = require(\"punycode\");\r\nconst tr46 = require(\"tr46\");\r\n\r\nconst specialSchemes = {\r\n  ftp: 21,\r\n  file: null,\r\n  gopher: 70,\r\n  http: 80,\r\n  https: 443,\r\n  ws: 80,\r\n  wss: 443\r\n};\r\n\r\nconst failure = Symbol(\"failure\");\r\n\r\nfunction countSymbols(str) {\r\n  return punycode.ucs2.decode(str).length;\r\n}\r\n\r\nfunction at(input, idx) {\r\n  const c = input[idx];\r\n  return isNaN(c) ? undefined : String.fromCodePoint(c);\r\n}\r\n\r\nfunction isASCIIDigit(c) {\r\n  return c >= 0x30 && c <= 0x39;\r\n}\r\n\r\nfunction isASCIIAlpha(c) {\r\n  return (c >= 0x41 && c <= 0x5A) || (c >= 0x61 && c <= 0x7A);\r\n}\r\n\r\nfunction isASCIIAlphanumeric(c) {\r\n  return isASCIIAlpha(c) || isASCIIDigit(c);\r\n}\r\n\r\nfunction isASCIIHex(c) {\r\n  return isASCIIDigit(c) || (c >= 0x41 && c <= 0x46) || (c >= 0x61 && c <= 0x66);\r\n}\r\n\r\nfunction isSingleDot(buffer) {\r\n  return buffer === \".\" || buffer.toLowerCase() === \"%2e\";\r\n}\r\n\r\nfunction isDoubleDot(buffer) {\r\n  buffer = buffer.toLowerCase();\r\n  return buffer === \"..\" || buffer === \"%2e.\" || buffer === \".%2e\" || buffer === \"%2e%2e\";\r\n}\r\n\r\nfunction isWindowsDriveLetterCodePoints(cp1, cp2) {\r\n  return isASCIIAlpha(cp1) && (cp2 === 58 || cp2 === 124);\r\n}\r\n\r\nfunction isWindowsDriveLetterString(string) {\r\n  return string.length === 2 && isASCIIAlpha(string.codePointAt(0)) && (string[1] === \":\" || string[1] === \"|\");\r\n}\r\n\r\nfunction isNormalizedWindowsDriveLetterString(string) {\r\n  return string.length === 2 && isASCIIAlpha(string.codePointAt(0)) && string[1] === \":\";\r\n}\r\n\r\nfunction containsForbiddenHostCodePoint(string) {\r\n  return string.search(/\\u0000|\\u0009|\\u000A|\\u000D|\\u0020|#|%|\\/|:|\\?|@|\\[|\\\\|\\]/) !== -1;\r\n}\r\n\r\nfunction containsForbiddenHostCodePointExcludingPercent(string) {\r\n  return string.search(/\\u0000|\\u0009|\\u000A|\\u000D|\\u0020|#|\\/|:|\\?|@|\\[|\\\\|\\]/) !== -1;\r\n}\r\n\r\nfunction isSpecialScheme(scheme) {\r\n  return specialSchemes[scheme] !== undefined;\r\n}\r\n\r\nfunction isSpecial(url) {\r\n  return isSpecialScheme(url.scheme);\r\n}\r\n\r\nfunction defaultPort(scheme) {\r\n  return specialSchemes[scheme];\r\n}\r\n\r\nfunction percentEncode(c) {\r\n  let hex = c.toString(16).toUpperCase();\r\n  if (hex.length === 1) {\r\n    hex = \"0\" + hex;\r\n  }\r\n\r\n  return \"%\" + hex;\r\n}\r\n\r\nfunction utf8PercentEncode(c) {\r\n  const buf = new Buffer(c);\r\n\r\n  let str = \"\";\r\n\r\n  for (let i = 0; i < buf.length; ++i) {\r\n    str += percentEncode(buf[i]);\r\n  }\r\n\r\n  return str;\r\n}\r\n\r\nfunction utf8PercentDecode(str) {\r\n  const input = new Buffer(str);\r\n  const output = [];\r\n  for (let i = 0; i < input.length; ++i) {\r\n    if (input[i] !== 37) {\r\n      output.push(input[i]);\r\n    } else if (input[i] === 37 && isASCIIHex(input[i + 1]) && isASCIIHex(input[i + 2])) {\r\n      output.push(parseInt(input.slice(i + 1, i + 3).toString(), 16));\r\n      i += 2;\r\n    } else {\r\n      output.push(input[i]);\r\n    }\r\n  }\r\n  return new Buffer(output).toString();\r\n}\r\n\r\nfunction isC0ControlPercentEncode(c) {\r\n  return c <= 0x1F || c > 0x7E;\r\n}\r\n\r\nconst extraPathPercentEncodeSet = new Set([32, 34, 35, 60, 62, 63, 96, 123, 125]);\r\nfunction isPathPercentEncode(c) {\r\n  return isC0ControlPercentEncode(c) || extraPathPercentEncodeSet.has(c);\r\n}\r\n\r\nconst extraUserinfoPercentEncodeSet =\r\n  new Set([47, 58, 59, 61, 64, 91, 92, 93, 94, 124]);\r\nfunction isUserinfoPercentEncode(c) {\r\n  return isPathPercentEncode(c) || extraUserinfoPercentEncodeSet.has(c);\r\n}\r\n\r\nfunction percentEncodeChar(c, encodeSetPredicate) {\r\n  const cStr = String.fromCodePoint(c);\r\n\r\n  if (encodeSetPredicate(c)) {\r\n    return utf8PercentEncode(cStr);\r\n  }\r\n\r\n  return cStr;\r\n}\r\n\r\nfunction parseIPv4Number(input) {\r\n  let R = 10;\r\n\r\n  if (input.length >= 2 && input.charAt(0) === \"0\" && input.charAt(1).toLowerCase() === \"x\") {\r\n    input = input.substring(2);\r\n    R = 16;\r\n  } else if (input.length >= 2 && input.charAt(0) === \"0\") {\r\n    input = input.substring(1);\r\n    R = 8;\r\n  }\r\n\r\n  if (input === \"\") {\r\n    return 0;\r\n  }\r\n\r\n  const regex = R === 10 ? /[^0-9]/ : (R === 16 ? /[^0-9A-Fa-f]/ : /[^0-7]/);\r\n  if (regex.test(input)) {\r\n    return failure;\r\n  }\r\n\r\n  return parseInt(input, R);\r\n}\r\n\r\nfunction parseIPv4(input) {\r\n  const parts = input.split(\".\");\r\n  if (parts[parts.length - 1] === \"\") {\r\n    if (parts.length > 1) {\r\n      parts.pop();\r\n    }\r\n  }\r\n\r\n  if (parts.length > 4) {\r\n    return input;\r\n  }\r\n\r\n  const numbers = [];\r\n  for (const part of parts) {\r\n    if (part === \"\") {\r\n      return input;\r\n    }\r\n    const n = parseIPv4Number(part);\r\n    if (n === failure) {\r\n      return input;\r\n    }\r\n\r\n    numbers.push(n);\r\n  }\r\n\r\n  for (let i = 0; i < numbers.length - 1; ++i) {\r\n    if (numbers[i] > 255) {\r\n      return failure;\r\n    }\r\n  }\r\n  if (numbers[numbers.length - 1] >= Math.pow(256, 5 - numbers.length)) {\r\n    return failure;\r\n  }\r\n\r\n  let ipv4 = numbers.pop();\r\n  let counter = 0;\r\n\r\n  for (const n of numbers) {\r\n    ipv4 += n * Math.pow(256, 3 - counter);\r\n    ++counter;\r\n  }\r\n\r\n  return ipv4;\r\n}\r\n\r\nfunction serializeIPv4(address) {\r\n  let output = \"\";\r\n  let n = address;\r\n\r\n  for (let i = 1; i <= 4; ++i) {\r\n    output = String(n % 256) + output;\r\n    if (i !== 4) {\r\n      output = \".\" + output;\r\n    }\r\n    n = Math.floor(n / 256);\r\n  }\r\n\r\n  return output;\r\n}\r\n\r\nfunction parseIPv6(input) {\r\n  const address = [0, 0, 0, 0, 0, 0, 0, 0];\r\n  let pieceIndex = 0;\r\n  let compress = null;\r\n  let pointer = 0;\r\n\r\n  input = punycode.ucs2.decode(input);\r\n\r\n  if (input[pointer] === 58) {\r\n    if (input[pointer + 1] !== 58) {\r\n      return failure;\r\n    }\r\n\r\n    pointer += 2;\r\n    ++pieceIndex;\r\n    compress = pieceIndex;\r\n  }\r\n\r\n  while (pointer < input.length) {\r\n    if (pieceIndex === 8) {\r\n      return failure;\r\n    }\r\n\r\n    if (input[pointer] === 58) {\r\n      if (compress !== null) {\r\n        return failure;\r\n      }\r\n      ++pointer;\r\n      ++pieceIndex;\r\n      compress = pieceIndex;\r\n      continue;\r\n    }\r\n\r\n    let value = 0;\r\n    let length = 0;\r\n\r\n    while (length < 4 && isASCIIHex(input[pointer])) {\r\n      value = value * 0x10 + parseInt(at(input, pointer), 16);\r\n      ++pointer;\r\n      ++length;\r\n    }\r\n\r\n    if (input[pointer] === 46) {\r\n      if (length === 0) {\r\n        return failure;\r\n      }\r\n\r\n      pointer -= length;\r\n\r\n      if (pieceIndex > 6) {\r\n        return failure;\r\n      }\r\n\r\n      let numbersSeen = 0;\r\n\r\n      while (input[pointer] !== undefined) {\r\n        let ipv4Piece = null;\r\n\r\n        if (numbersSeen > 0) {\r\n          if (input[pointer] === 46 && numbersSeen < 4) {\r\n            ++pointer;\r\n          } else {\r\n            return failure;\r\n          }\r\n        }\r\n\r\n        if (!isASCIIDigit(input[pointer])) {\r\n          return failure;\r\n        }\r\n\r\n        while (isASCIIDigit(input[pointer])) {\r\n          const number = parseInt(at(input, pointer));\r\n          if (ipv4Piece === null) {\r\n            ipv4Piece = number;\r\n          } else if (ipv4Piece === 0) {\r\n            return failure;\r\n          } else {\r\n            ipv4Piece = ipv4Piece * 10 + number;\r\n          }\r\n          if (ipv4Piece > 255) {\r\n            return failure;\r\n          }\r\n          ++pointer;\r\n        }\r\n\r\n        address[pieceIndex] = address[pieceIndex] * 0x100 + ipv4Piece;\r\n\r\n        ++numbersSeen;\r\n\r\n        if (numbersSeen === 2 || numbersSeen === 4) {\r\n          ++pieceIndex;\r\n        }\r\n      }\r\n\r\n      if (numbersSeen !== 4) {\r\n        return failure;\r\n      }\r\n\r\n      break;\r\n    } else if (input[pointer] === 58) {\r\n      ++pointer;\r\n      if (input[pointer] === undefined) {\r\n        return failure;\r\n      }\r\n    } else if (input[pointer] !== undefined) {\r\n      return failure;\r\n    }\r\n\r\n    address[pieceIndex] = value;\r\n    ++pieceIndex;\r\n  }\r\n\r\n  if (compress !== null) {\r\n    let swaps = pieceIndex - compress;\r\n    pieceIndex = 7;\r\n    while (pieceIndex !== 0 && swaps > 0) {\r\n      const temp = address[compress + swaps - 1];\r\n      address[compress + swaps - 1] = address[pieceIndex];\r\n      address[pieceIndex] = temp;\r\n      --pieceIndex;\r\n      --swaps;\r\n    }\r\n  } else if (compress === null && pieceIndex !== 8) {\r\n    return failure;\r\n  }\r\n\r\n  return address;\r\n}\r\n\r\nfunction serializeIPv6(address) {\r\n  let output = \"\";\r\n  const seqResult = findLongestZeroSequence(address);\r\n  const compress = seqResult.idx;\r\n  let ignore0 = false;\r\n\r\n  for (let pieceIndex = 0; pieceIndex <= 7; ++pieceIndex) {\r\n    if (ignore0 && address[pieceIndex] === 0) {\r\n      continue;\r\n    } else if (ignore0) {\r\n      ignore0 = false;\r\n    }\r\n\r\n    if (compress === pieceIndex) {\r\n      const separator = pieceIndex === 0 ? \"::\" : \":\";\r\n      output += separator;\r\n      ignore0 = true;\r\n      continue;\r\n    }\r\n\r\n    output += address[pieceIndex].toString(16);\r\n\r\n    if (pieceIndex !== 7) {\r\n      output += \":\";\r\n    }\r\n  }\r\n\r\n  return output;\r\n}\r\n\r\nfunction parseHost(input, isSpecialArg) {\r\n  if (input[0] === \"[\") {\r\n    if (input[input.length - 1] !== \"]\") {\r\n      return failure;\r\n    }\r\n\r\n    return parseIPv6(input.substring(1, input.length - 1));\r\n  }\r\n\r\n  if (!isSpecialArg) {\r\n    return parseOpaqueHost(input);\r\n  }\r\n\r\n  const domain = utf8PercentDecode(input);\r\n  const asciiDomain = tr46.toASCII(domain, false, tr46.PROCESSING_OPTIONS.NONTRANSITIONAL, false);\r\n  if (asciiDomain === null) {\r\n    return failure;\r\n  }\r\n\r\n  if (containsForbiddenHostCodePoint(asciiDomain)) {\r\n    return failure;\r\n  }\r\n\r\n  const ipv4Host = parseIPv4(asciiDomain);\r\n  if (typeof ipv4Host === \"number\" || ipv4Host === failure) {\r\n    return ipv4Host;\r\n  }\r\n\r\n  return asciiDomain;\r\n}\r\n\r\nfunction parseOpaqueHost(input) {\r\n  if (containsForbiddenHostCodePointExcludingPercent(input)) {\r\n    return failure;\r\n  }\r\n\r\n  let output = \"\";\r\n  const decoded = punycode.ucs2.decode(input);\r\n  for (let i = 0; i < decoded.length; ++i) {\r\n    output += percentEncodeChar(decoded[i], isC0ControlPercentEncode);\r\n  }\r\n  return output;\r\n}\r\n\r\nfunction findLongestZeroSequence(arr) {\r\n  let maxIdx = null;\r\n  let maxLen = 1; // only find elements > 1\r\n  let currStart = null;\r\n  let currLen = 0;\r\n\r\n  for (let i = 0; i < arr.length; ++i) {\r\n    if (arr[i] !== 0) {\r\n      if (currLen > maxLen) {\r\n        maxIdx = currStart;\r\n        maxLen = currLen;\r\n      }\r\n\r\n      currStart = null;\r\n      currLen = 0;\r\n    } else {\r\n      if (currStart === null) {\r\n        currStart = i;\r\n      }\r\n      ++currLen;\r\n    }\r\n  }\r\n\r\n  // if trailing zeros\r\n  if (currLen > maxLen) {\r\n    maxIdx = currStart;\r\n    maxLen = currLen;\r\n  }\r\n\r\n  return {\r\n    idx: maxIdx,\r\n    len: maxLen\r\n  };\r\n}\r\n\r\nfunction serializeHost(host) {\r\n  if (typeof host === \"number\") {\r\n    return serializeIPv4(host);\r\n  }\r\n\r\n  // IPv6 serializer\r\n  if (host instanceof Array) {\r\n    return \"[\" + serializeIPv6(host) + \"]\";\r\n  }\r\n\r\n  return host;\r\n}\r\n\r\nfunction trimControlChars(url) {\r\n  return url.replace(/^[\\u0000-\\u001F\\u0020]+|[\\u0000-\\u001F\\u0020]+$/g, \"\");\r\n}\r\n\r\nfunction trimTabAndNewline(url) {\r\n  return url.replace(/\\u0009|\\u000A|\\u000D/g, \"\");\r\n}\r\n\r\nfunction shortenPath(url) {\r\n  const path = url.path;\r\n  if (path.length === 0) {\r\n    return;\r\n  }\r\n  if (url.scheme === \"file\" && path.length === 1 && isNormalizedWindowsDriveLetter(path[0])) {\r\n    return;\r\n  }\r\n\r\n  path.pop();\r\n}\r\n\r\nfunction includesCredentials(url) {\r\n  return url.username !== \"\" || url.password !== \"\";\r\n}\r\n\r\nfunction cannotHaveAUsernamePasswordPort(url) {\r\n  return url.host === null || url.host === \"\" || url.cannotBeABaseURL || url.scheme === \"file\";\r\n}\r\n\r\nfunction isNormalizedWindowsDriveLetter(string) {\r\n  return /^[A-Za-z]:$/.test(string);\r\n}\r\n\r\nfunction URLStateMachine(input, base, encodingOverride, url, stateOverride) {\r\n  this.pointer = 0;\r\n  this.input = input;\r\n  this.base = base || null;\r\n  this.encodingOverride = encodingOverride || \"utf-8\";\r\n  this.stateOverride = stateOverride;\r\n  this.url = url;\r\n  this.failure = false;\r\n  this.parseError = false;\r\n\r\n  if (!this.url) {\r\n    this.url = {\r\n      scheme: \"\",\r\n      username: \"\",\r\n      password: \"\",\r\n      host: null,\r\n      port: null,\r\n      path: [],\r\n      query: null,\r\n      fragment: null,\r\n\r\n      cannotBeABaseURL: false\r\n    };\r\n\r\n    const res = trimControlChars(this.input);\r\n    if (res !== this.input) {\r\n      this.parseError = true;\r\n    }\r\n    this.input = res;\r\n  }\r\n\r\n  const res = trimTabAndNewline(this.input);\r\n  if (res !== this.input) {\r\n    this.parseError = true;\r\n  }\r\n  this.input = res;\r\n\r\n  this.state = stateOverride || \"scheme start\";\r\n\r\n  this.buffer = \"\";\r\n  this.atFlag = false;\r\n  this.arrFlag = false;\r\n  this.passwordTokenSeenFlag = false;\r\n\r\n  this.input = punycode.ucs2.decode(this.input);\r\n\r\n  for (; this.pointer <= this.input.length; ++this.pointer) {\r\n    const c = this.input[this.pointer];\r\n    const cStr = isNaN(c) ? undefined : String.fromCodePoint(c);\r\n\r\n    // exec state machine\r\n    const ret = this[\"parse \" + this.state](c, cStr);\r\n    if (!ret) {\r\n      break; // terminate algorithm\r\n    } else if (ret === failure) {\r\n      this.failure = true;\r\n      break;\r\n    }\r\n  }\r\n}\r\n\r\nURLStateMachine.prototype[\"parse scheme start\"] = function parseSchemeStart(c, cStr) {\r\n  if (isASCIIAlpha(c)) {\r\n    this.buffer += cStr.toLowerCase();\r\n    this.state = \"scheme\";\r\n  } else if (!this.stateOverride) {\r\n    this.state = \"no scheme\";\r\n    --this.pointer;\r\n  } else {\r\n    this.parseError = true;\r\n    return failure;\r\n  }\r\n\r\n  return true;\r\n};\r\n\r\nURLStateMachine.prototype[\"parse scheme\"] = function parseScheme(c, cStr) {\r\n  if (isASCIIAlphanumeric(c) || c === 43 || c === 45 || c === 46) {\r\n    this.buffer += cStr.toLowerCase();\r\n  } else if (c === 58) {\r\n    if (this.stateOverride) {\r\n      if (isSpecial(this.url) && !isSpecialScheme(this.buffer)) {\r\n        return false;\r\n      }\r\n\r\n      if (!isSpecial(this.url) && isSpecialScheme(this.buffer)) {\r\n        return false;\r\n      }\r\n\r\n      if ((includesCredentials(this.url) || this.url.port !== null) && this.buffer === \"file\") {\r\n        return false;\r\n      }\r\n\r\n      if (this.url.scheme === \"file\" && (this.url.host === \"\" || this.url.host === null)) {\r\n        return false;\r\n      }\r\n    }\r\n    this.url.scheme = this.buffer;\r\n    this.buffer = \"\";\r\n    if (this.stateOverride) {\r\n      return false;\r\n    }\r\n    if (this.url.scheme === \"file\") {\r\n      if (this.input[this.pointer + 1] !== 47 || this.input[this.pointer + 2] !== 47) {\r\n        this.parseError = true;\r\n      }\r\n      this.state = \"file\";\r\n    } else if (isSpecial(this.url) && this.base !== null && this.base.scheme === this.url.scheme) {\r\n      this.state = \"special relative or authority\";\r\n    } else if (isSpecial(this.url)) {\r\n      this.state = \"special authority slashes\";\r\n    } else if (this.input[this.pointer + 1] === 47) {\r\n      this.state = \"path or authority\";\r\n      ++this.pointer;\r\n    } else {\r\n      this.url.cannotBeABaseURL = true;\r\n      this.url.path.push(\"\");\r\n      this.state = \"cannot-be-a-base-URL path\";\r\n    }\r\n  } else if (!this.stateOverride) {\r\n    this.buffer = \"\";\r\n    this.state = \"no scheme\";\r\n    this.pointer = -1;\r\n  } else {\r\n    this.parseError = true;\r\n    return failure;\r\n  }\r\n\r\n  return true;\r\n};\r\n\r\nURLStateMachine.prototype[\"parse no scheme\"] = function parseNoScheme(c) {\r\n  if (this.base === null || (this.base.cannotBeABaseURL && c !== 35)) {\r\n    return failure;\r\n  } else if (this.base.cannotBeABaseURL && c === 35) {\r\n    this.url.scheme = this.base.scheme;\r\n    this.url.path = this.base.path.slice();\r\n    this.url.query = this.base.query;\r\n    this.url.fragment = \"\";\r\n    this.url.cannotBeABaseURL = true;\r\n    this.state = \"fragment\";\r\n  } else if (this.base.scheme === \"file\") {\r\n    this.state = \"file\";\r\n    --this.pointer;\r\n  } else {\r\n    this.state = \"relative\";\r\n    --this.pointer;\r\n  }\r\n\r\n  return true;\r\n};\r\n\r\nURLStateMachine.prototype[\"parse special relative or authority\"] = function parseSpecialRelativeOrAuthority(c) {\r\n  if (c === 47 && this.input[this.pointer + 1] === 47) {\r\n    this.state = \"special authority ignore slashes\";\r\n    ++this.pointer;\r\n  } else {\r\n    this.parseError = true;\r\n    this.state = \"relative\";\r\n    --this.pointer;\r\n  }\r\n\r\n  return true;\r\n};\r\n\r\nURLStateMachine.prototype[\"parse path or authority\"] = function parsePathOrAuthority(c) {\r\n  if (c === 47) {\r\n    this.state = \"authority\";\r\n  } else {\r\n    this.state = \"path\";\r\n    --this.pointer;\r\n  }\r\n\r\n  return true;\r\n};\r\n\r\nURLStateMachine.prototype[\"parse relative\"] = function parseRelative(c) {\r\n  this.url.scheme = this.base.scheme;\r\n  if (isNaN(c)) {\r\n    this.url.username = this.base.username;\r\n    this.url.password = this.base.password;\r\n    this.url.host = this.base.host;\r\n    this.url.port = this.base.port;\r\n    this.url.path = this.base.path.slice();\r\n    this.url.query = this.base.query;\r\n  } else if (c === 47) {\r\n    this.state = \"relative slash\";\r\n  } else if (c === 63) {\r\n    this.url.username = this.base.username;\r\n    this.url.password = this.base.password;\r\n    this.url.host = this.base.host;\r\n    this.url.port = this.base.port;\r\n    this.url.path = this.base.path.slice();\r\n    this.url.query = \"\";\r\n    this.state = \"query\";\r\n  } else if (c === 35) {\r\n    this.url.username = this.base.username;\r\n    this.url.password = this.base.password;\r\n    this.url.host = this.base.host;\r\n    this.url.port = this.base.port;\r\n    this.url.path = this.base.path.slice();\r\n    this.url.query = this.base.query;\r\n    this.url.fragment = \"\";\r\n    this.state = \"fragment\";\r\n  } else if (isSpecial(this.url) && c === 92) {\r\n    this.parseError = true;\r\n    this.state = \"relative slash\";\r\n  } else {\r\n    this.url.username = this.base.username;\r\n    this.url.password = this.base.password;\r\n    this.url.host = this.base.host;\r\n    this.url.port = this.base.port;\r\n    this.url.path = this.base.path.slice(0, this.base.path.length - 1);\r\n\r\n    this.state = \"path\";\r\n    --this.pointer;\r\n  }\r\n\r\n  return true;\r\n};\r\n\r\nURLStateMachine.prototype[\"parse relative slash\"] = function parseRelativeSlash(c) {\r\n  if (isSpecial(this.url) && (c === 47 || c === 92)) {\r\n    if (c === 92) {\r\n      this.parseError = true;\r\n    }\r\n    this.state = \"special authority ignore slashes\";\r\n  } else if (c === 47) {\r\n    this.state = \"authority\";\r\n  } else {\r\n    this.url.username = this.base.username;\r\n    this.url.password = this.base.password;\r\n    this.url.host = this.base.host;\r\n    this.url.port = this.base.port;\r\n    this.state = \"path\";\r\n    --this.pointer;\r\n  }\r\n\r\n  return true;\r\n};\r\n\r\nURLStateMachine.prototype[\"parse special authority slashes\"] = function parseSpecialAuthoritySlashes(c) {\r\n  if (c === 47 && this.input[this.pointer + 1] === 47) {\r\n    this.state = \"special authority ignore slashes\";\r\n    ++this.pointer;\r\n  } else {\r\n    this.parseError = true;\r\n    this.state = \"special authority ignore slashes\";\r\n    --this.pointer;\r\n  }\r\n\r\n  return true;\r\n};\r\n\r\nURLStateMachine.prototype[\"parse special authority ignore slashes\"] = function parseSpecialAuthorityIgnoreSlashes(c) {\r\n  if (c !== 47 && c !== 92) {\r\n    this.state = \"authority\";\r\n    --this.pointer;\r\n  } else {\r\n    this.parseError = true;\r\n  }\r\n\r\n  return true;\r\n};\r\n\r\nURLStateMachine.prototype[\"parse authority\"] = function parseAuthority(c, cStr) {\r\n  if (c === 64) {\r\n    this.parseError = true;\r\n    if (this.atFlag) {\r\n      this.buffer = \"%40\" + this.buffer;\r\n    }\r\n    this.atFlag = true;\r\n\r\n    // careful, this is based on buffer and has its own pointer (this.pointer != pointer) and inner chars\r\n    const len = countSymbols(this.buffer);\r\n    for (let pointer = 0; pointer < len; ++pointer) {\r\n      const codePoint = this.buffer.codePointAt(pointer);\r\n\r\n      if (codePoint === 58 && !this.passwordTokenSeenFlag) {\r\n        this.passwordTokenSeenFlag = true;\r\n        continue;\r\n      }\r\n      const encodedCodePoints = percentEncodeChar(codePoint, isUserinfoPercentEncode);\r\n      if (this.passwordTokenSeenFlag) {\r\n        this.url.password += encodedCodePoints;\r\n      } else {\r\n        this.url.username += encodedCodePoints;\r\n      }\r\n    }\r\n    this.buffer = \"\";\r\n  } else if (isNaN(c) || c === 47 || c === 63 || c === 35 ||\r\n             (isSpecial(this.url) && c === 92)) {\r\n    if (this.atFlag && this.buffer === \"\") {\r\n      this.parseError = true;\r\n      return failure;\r\n    }\r\n    this.pointer -= countSymbols(this.buffer) + 1;\r\n    this.buffer = \"\";\r\n    this.state = \"host\";\r\n  } else {\r\n    this.buffer += cStr;\r\n  }\r\n\r\n  return true;\r\n};\r\n\r\nURLStateMachine.prototype[\"parse hostname\"] =\r\nURLStateMachine.prototype[\"parse host\"] = function parseHostName(c, cStr) {\r\n  if (this.stateOverride && this.url.scheme === \"file\") {\r\n    --this.pointer;\r\n    this.state = \"file host\";\r\n  } else if (c === 58 && !this.arrFlag) {\r\n    if (this.buffer === \"\") {\r\n      this.parseError = true;\r\n      return failure;\r\n    }\r\n\r\n    const host = parseHost(this.buffer, isSpecial(this.url));\r\n    if (host === failure) {\r\n      return failure;\r\n    }\r\n\r\n    this.url.host = host;\r\n    this.buffer = \"\";\r\n    this.state = \"port\";\r\n    if (this.stateOverride === \"hostname\") {\r\n      return false;\r\n    }\r\n  } else if (isNaN(c) || c === 47 || c === 63 || c === 35 ||\r\n             (isSpecial(this.url) && c === 92)) {\r\n    --this.pointer;\r\n    if (isSpecial(this.url) && this.buffer === \"\") {\r\n      this.parseError = true;\r\n      return failure;\r\n    } else if (this.stateOverride && this.buffer === \"\" &&\r\n               (includesCredentials(this.url) || this.url.port !== null)) {\r\n      this.parseError = true;\r\n      return false;\r\n    }\r\n\r\n    const host = parseHost(this.buffer, isSpecial(this.url));\r\n    if (host === failure) {\r\n      return failure;\r\n    }\r\n\r\n    this.url.host = host;\r\n    this.buffer = \"\";\r\n    this.state = \"path start\";\r\n    if (this.stateOverride) {\r\n      return false;\r\n    }\r\n  } else {\r\n    if (c === 91) {\r\n      this.arrFlag = true;\r\n    } else if (c === 93) {\r\n      this.arrFlag = false;\r\n    }\r\n    this.buffer += cStr;\r\n  }\r\n\r\n  return true;\r\n};\r\n\r\nURLStateMachine.prototype[\"parse port\"] = function parsePort(c, cStr) {\r\n  if (isASCIIDigit(c)) {\r\n    this.buffer += cStr;\r\n  } else if (isNaN(c) || c === 47 || c === 63 || c === 35 ||\r\n             (isSpecial(this.url) && c === 92) ||\r\n             this.stateOverride) {\r\n    if (this.buffer !== \"\") {\r\n      const port = parseInt(this.buffer);\r\n      if (port > Math.pow(2, 16) - 1) {\r\n        this.parseError = true;\r\n        return failure;\r\n      }\r\n      this.url.port = port === defaultPort(this.url.scheme) ? null : port;\r\n      this.buffer = \"\";\r\n    }\r\n    if (this.stateOverride) {\r\n      return false;\r\n    }\r\n    this.state = \"path start\";\r\n    --this.pointer;\r\n  } else {\r\n    this.parseError = true;\r\n    return failure;\r\n  }\r\n\r\n  return true;\r\n};\r\n\r\nconst fileOtherwiseCodePoints = new Set([47, 92, 63, 35]);\r\n\r\nURLStateMachine.prototype[\"parse file\"] = function parseFile(c) {\r\n  this.url.scheme = \"file\";\r\n\r\n  if (c === 47 || c === 92) {\r\n    if (c === 92) {\r\n      this.parseError = true;\r\n    }\r\n    this.state = \"file slash\";\r\n  } else if (this.base !== null && this.base.scheme === \"file\") {\r\n    if (isNaN(c)) {\r\n      this.url.host = this.base.host;\r\n      this.url.path = this.base.path.slice();\r\n      this.url.query = this.base.query;\r\n    } else if (c === 63) {\r\n      this.url.host = this.base.host;\r\n      this.url.path = this.base.path.slice();\r\n      this.url.query = \"\";\r\n      this.state = \"query\";\r\n    } else if (c === 35) {\r\n      this.url.host = this.base.host;\r\n      this.url.path = this.base.path.slice();\r\n      this.url.query = this.base.query;\r\n      this.url.fragment = \"\";\r\n      this.state = \"fragment\";\r\n    } else {\r\n      if (this.input.length - this.pointer - 1 === 0 || // remaining consists of 0 code points\r\n          !isWindowsDriveLetterCodePoints(c, this.input[this.pointer + 1]) ||\r\n          (this.input.length - this.pointer - 1 >= 2 && // remaining has at least 2 code points\r\n           !fileOtherwiseCodePoints.has(this.input[this.pointer + 2]))) {\r\n        this.url.host = this.base.host;\r\n        this.url.path = this.base.path.slice();\r\n        shortenPath(this.url);\r\n      } else {\r\n        this.parseError = true;\r\n      }\r\n\r\n      this.state = \"path\";\r\n      --this.pointer;\r\n    }\r\n  } else {\r\n    this.state = \"path\";\r\n    --this.pointer;\r\n  }\r\n\r\n  return true;\r\n};\r\n\r\nURLStateMachine.prototype[\"parse file slash\"] = function parseFileSlash(c) {\r\n  if (c === 47 || c === 92) {\r\n    if (c === 92) {\r\n      this.parseError = true;\r\n    }\r\n    this.state = \"file host\";\r\n  } else {\r\n    if (this.base !== null && this.base.scheme === \"file\") {\r\n      if (isNormalizedWindowsDriveLetterString(this.base.path[0])) {\r\n        this.url.path.push(this.base.path[0]);\r\n      } else {\r\n        this.url.host = this.base.host;\r\n      }\r\n    }\r\n    this.state = \"path\";\r\n    --this.pointer;\r\n  }\r\n\r\n  return true;\r\n};\r\n\r\nURLStateMachine.prototype[\"parse file host\"] = function parseFileHost(c, cStr) {\r\n  if (isNaN(c) || c === 47 || c === 92 || c === 63 || c === 35) {\r\n    --this.pointer;\r\n    if (!this.stateOverride && isWindowsDriveLetterString(this.buffer)) {\r\n      this.parseError = true;\r\n      this.state = \"path\";\r\n    } else if (this.buffer === \"\") {\r\n      this.url.host = \"\";\r\n      if (this.stateOverride) {\r\n        return false;\r\n      }\r\n      this.state = \"path start\";\r\n    } else {\r\n      let host = parseHost(this.buffer, isSpecial(this.url));\r\n      if (host === failure) {\r\n        return failure;\r\n      }\r\n      if (host === \"localhost\") {\r\n        host = \"\";\r\n      }\r\n      this.url.host = host;\r\n\r\n      if (this.stateOverride) {\r\n        return false;\r\n      }\r\n\r\n      this.buffer = \"\";\r\n      this.state = \"path start\";\r\n    }\r\n  } else {\r\n    this.buffer += cStr;\r\n  }\r\n\r\n  return true;\r\n};\r\n\r\nURLStateMachine.prototype[\"parse path start\"] = function parsePathStart(c) {\r\n  if (isSpecial(this.url)) {\r\n    if (c === 92) {\r\n      this.parseError = true;\r\n    }\r\n    this.state = \"path\";\r\n\r\n    if (c !== 47 && c !== 92) {\r\n      --this.pointer;\r\n    }\r\n  } else if (!this.stateOverride && c === 63) {\r\n    this.url.query = \"\";\r\n    this.state = \"query\";\r\n  } else if (!this.stateOverride && c === 35) {\r\n    this.url.fragment = \"\";\r\n    this.state = \"fragment\";\r\n  } else if (c !== undefined) {\r\n    this.state = \"path\";\r\n    if (c !== 47) {\r\n      --this.pointer;\r\n    }\r\n  }\r\n\r\n  return true;\r\n};\r\n\r\nURLStateMachine.prototype[\"parse path\"] = function parsePath(c) {\r\n  if (isNaN(c) || c === 47 || (isSpecial(this.url) && c === 92) ||\r\n      (!this.stateOverride && (c === 63 || c === 35))) {\r\n    if (isSpecial(this.url) && c === 92) {\r\n      this.parseError = true;\r\n    }\r\n\r\n    if (isDoubleDot(this.buffer)) {\r\n      shortenPath(this.url);\r\n      if (c !== 47 && !(isSpecial(this.url) && c === 92)) {\r\n        this.url.path.push(\"\");\r\n      }\r\n    } else if (isSingleDot(this.buffer) && c !== 47 &&\r\n               !(isSpecial(this.url) && c === 92)) {\r\n      this.url.path.push(\"\");\r\n    } else if (!isSingleDot(this.buffer)) {\r\n      if (this.url.scheme === \"file\" && this.url.path.length === 0 && isWindowsDriveLetterString(this.buffer)) {\r\n        if (this.url.host !== \"\" && this.url.host !== null) {\r\n          this.parseError = true;\r\n          this.url.host = \"\";\r\n        }\r\n        this.buffer = this.buffer[0] + \":\";\r\n      }\r\n      this.url.path.push(this.buffer);\r\n    }\r\n    this.buffer = \"\";\r\n    if (this.url.scheme === \"file\" && (c === undefined || c === 63 || c === 35)) {\r\n      while (this.url.path.length > 1 && this.url.path[0] === \"\") {\r\n        this.parseError = true;\r\n        this.url.path.shift();\r\n      }\r\n    }\r\n    if (c === 63) {\r\n      this.url.query = \"\";\r\n      this.state = \"query\";\r\n    }\r\n    if (c === 35) {\r\n      this.url.fragment = \"\";\r\n      this.state = \"fragment\";\r\n    }\r\n  } else {\r\n    // TODO: If c is not a URL code point and not \"%\", parse error.\r\n\r\n    if (c === 37 &&\r\n      (!isASCIIHex(this.input[this.pointer + 1]) ||\r\n        !isASCIIHex(this.input[this.pointer + 2]))) {\r\n      this.parseError = true;\r\n    }\r\n\r\n    this.buffer += percentEncodeChar(c, isPathPercentEncode);\r\n  }\r\n\r\n  return true;\r\n};\r\n\r\nURLStateMachine.prototype[\"parse cannot-be-a-base-URL path\"] = function parseCannotBeABaseURLPath(c) {\r\n  if (c === 63) {\r\n    this.url.query = \"\";\r\n    this.state = \"query\";\r\n  } else if (c === 35) {\r\n    this.url.fragment = \"\";\r\n    this.state = \"fragment\";\r\n  } else {\r\n    // TODO: Add: not a URL code point\r\n    if (!isNaN(c) && c !== 37) {\r\n      this.parseError = true;\r\n    }\r\n\r\n    if (c === 37 &&\r\n        (!isASCIIHex(this.input[this.pointer + 1]) ||\r\n         !isASCIIHex(this.input[this.pointer + 2]))) {\r\n      this.parseError = true;\r\n    }\r\n\r\n    if (!isNaN(c)) {\r\n      this.url.path[0] = this.url.path[0] + percentEncodeChar(c, isC0ControlPercentEncode);\r\n    }\r\n  }\r\n\r\n  return true;\r\n};\r\n\r\nURLStateMachine.prototype[\"parse query\"] = function parseQuery(c, cStr) {\r\n  if (isNaN(c) || (!this.stateOverride && c === 35)) {\r\n    if (!isSpecial(this.url) || this.url.scheme === \"ws\" || this.url.scheme === \"wss\") {\r\n      this.encodingOverride = \"utf-8\";\r\n    }\r\n\r\n    const buffer = new Buffer(this.buffer); // TODO: Use encoding override instead\r\n    for (let i = 0; i < buffer.length; ++i) {\r\n      if (buffer[i] < 0x21 || buffer[i] > 0x7E || buffer[i] === 0x22 || buffer[i] === 0x23 ||\r\n          buffer[i] === 0x3C || buffer[i] === 0x3E) {\r\n        this.url.query += percentEncode(buffer[i]);\r\n      } else {\r\n        this.url.query += String.fromCodePoint(buffer[i]);\r\n      }\r\n    }\r\n\r\n    this.buffer = \"\";\r\n    if (c === 35) {\r\n      this.url.fragment = \"\";\r\n      this.state = \"fragment\";\r\n    }\r\n  } else {\r\n    // TODO: If c is not a URL code point and not \"%\", parse error.\r\n    if (c === 37 &&\r\n      (!isASCIIHex(this.input[this.pointer + 1]) ||\r\n        !isASCIIHex(this.input[this.pointer + 2]))) {\r\n      this.parseError = true;\r\n    }\r\n\r\n    this.buffer += cStr;\r\n  }\r\n\r\n  return true;\r\n};\r\n\r\nURLStateMachine.prototype[\"parse fragment\"] = function parseFragment(c) {\r\n  if (isNaN(c)) { // do nothing\r\n  } else if (c === 0x0) {\r\n    this.parseError = true;\r\n  } else {\r\n    // TODO: If c is not a URL code point and not \"%\", parse error.\r\n    if (c === 37 &&\r\n      (!isASCIIHex(this.input[this.pointer + 1]) ||\r\n        !isASCIIHex(this.input[this.pointer + 2]))) {\r\n      this.parseError = true;\r\n    }\r\n\r\n    this.url.fragment += percentEncodeChar(c, isC0ControlPercentEncode);\r\n  }\r\n\r\n  return true;\r\n};\r\n\r\nfunction serializeURL(url, excludeFragment) {\r\n  let output = url.scheme + \":\";\r\n  if (url.host !== null) {\r\n    output += \"//\";\r\n\r\n    if (url.username !== \"\" || url.password !== \"\") {\r\n      output += url.username;\r\n      if (url.password !== \"\") {\r\n        output += \":\" + url.password;\r\n      }\r\n      output += \"@\";\r\n    }\r\n\r\n    output += serializeHost(url.host);\r\n\r\n    if (url.port !== null) {\r\n      output += \":\" + url.port;\r\n    }\r\n  } else if (url.host === null && url.scheme === \"file\") {\r\n    output += \"//\";\r\n  }\r\n\r\n  if (url.cannotBeABaseURL) {\r\n    output += url.path[0];\r\n  } else {\r\n    for (const string of url.path) {\r\n      output += \"/\" + string;\r\n    }\r\n  }\r\n\r\n  if (url.query !== null) {\r\n    output += \"?\" + url.query;\r\n  }\r\n\r\n  if (!excludeFragment && url.fragment !== null) {\r\n    output += \"#\" + url.fragment;\r\n  }\r\n\r\n  return output;\r\n}\r\n\r\nfunction serializeOrigin(tuple) {\r\n  let result = tuple.scheme + \"://\";\r\n  result += serializeHost(tuple.host);\r\n\r\n  if (tuple.port !== null) {\r\n    result += \":\" + tuple.port;\r\n  }\r\n\r\n  return result;\r\n}\r\n\r\nmodule.exports.serializeURL = serializeURL;\r\n\r\nmodule.exports.serializeURLOrigin = function (url) {\r\n  // https://url.spec.whatwg.org/#concept-url-origin\r\n  switch (url.scheme) {\r\n    case \"blob\":\r\n      try {\r\n        return module.exports.serializeURLOrigin(module.exports.parseURL(url.path[0]));\r\n      } catch (e) {\r\n        // serializing an opaque origin returns \"null\"\r\n        return \"null\";\r\n      }\r\n    case \"ftp\":\r\n    case \"gopher\":\r\n    case \"http\":\r\n    case \"https\":\r\n    case \"ws\":\r\n    case \"wss\":\r\n      return serializeOrigin({\r\n        scheme: url.scheme,\r\n        host: url.host,\r\n        port: url.port\r\n      });\r\n    case \"file\":\r\n      // spec says \"exercise to the reader\", chrome says \"file://\"\r\n      return \"file://\";\r\n    default:\r\n      // serializing an opaque origin returns \"null\"\r\n      return \"null\";\r\n  }\r\n};\r\n\r\nmodule.exports.basicURLParse = function (input, options) {\r\n  if (options === undefined) {\r\n    options = {};\r\n  }\r\n\r\n  const usm = new URLStateMachine(input, options.baseURL, options.encodingOverride, options.url, options.stateOverride);\r\n  if (usm.failure) {\r\n    return \"failure\";\r\n  }\r\n\r\n  return usm.url;\r\n};\r\n\r\nmodule.exports.setTheUsername = function (url, username) {\r\n  url.username = \"\";\r\n  const decoded = punycode.ucs2.decode(username);\r\n  for (let i = 0; i < decoded.length; ++i) {\r\n    url.username += percentEncodeChar(decoded[i], isUserinfoPercentEncode);\r\n  }\r\n};\r\n\r\nmodule.exports.setThePassword = function (url, password) {\r\n  url.password = \"\";\r\n  const decoded = punycode.ucs2.decode(password);\r\n  for (let i = 0; i < decoded.length; ++i) {\r\n    url.password += percentEncodeChar(decoded[i], isUserinfoPercentEncode);\r\n  }\r\n};\r\n\r\nmodule.exports.serializeHost = serializeHost;\r\n\r\nmodule.exports.cannotHaveAUsernamePasswordPort = cannotHaveAUsernamePasswordPort;\r\n\r\nmodule.exports.serializeInteger = function (integer) {\r\n  return String(integer);\r\n};\r\n\r\nmodule.exports.parseURL = function (input, options) {\r\n  if (options === undefined) {\r\n    options = {};\r\n  }\r\n\r\n  // We don't handle blobs, so this just delegates:\r\n  return module.exports.basicURLParse(input, { baseURL: options.baseURL, encodingOverride: options.encodingOverride });\r\n};\r\n","\"use strict\";\n\nmodule.exports.mixin = function mixin(target, source) {\n  const keys = Object.getOwnPropertyNames(source);\n  for (let i = 0; i < keys.length; ++i) {\n    Object.defineProperty(target, keys[i], Object.getOwnPropertyDescriptor(source, keys[i]));\n  }\n};\n\nmodule.exports.wrapperSymbol = Symbol(\"wrapper\");\nmodule.exports.implSymbol = Symbol(\"impl\");\n\nmodule.exports.wrapperForImpl = function (impl) {\n  return impl[module.exports.wrapperSymbol];\n};\n\nmodule.exports.implForWrapper = function (wrapper) {\n  return wrapper[module.exports.implSymbol];\n};\n\n",null,"module.exports = require(\"assert\");","module.exports = require(\"crypto\");","module.exports = require(\"events\");","module.exports = require(\"fs\");","module.exports = require(\"http\");","module.exports = require(\"https\");","module.exports = require(\"net\");","module.exports = require(\"os\");","module.exports = require(\"path\");","module.exports = require(\"punycode\");","module.exports = require(\"stream\");","module.exports = require(\"tls\");","module.exports = require(\"url\");","module.exports = require(\"util\");","module.exports = require(\"zlib\");","'use strict';\n\nvar Node = require('../nodes/Node.js');\nvar Scalar = require('../nodes/Scalar.js');\nvar resolveBlockMap = require('./resolve-block-map.js');\nvar resolveBlockSeq = require('./resolve-block-seq.js');\nvar resolveFlowCollection = require('./resolve-flow-collection.js');\n\nfunction composeCollection(CN, ctx, token, tagToken, onError) {\n    let coll;\n    switch (token.type) {\n        case 'block-map': {\n            coll = resolveBlockMap.resolveBlockMap(CN, ctx, token, onError);\n            break;\n        }\n        case 'block-seq': {\n            coll = resolveBlockSeq.resolveBlockSeq(CN, ctx, token, onError);\n            break;\n        }\n        case 'flow-collection': {\n            coll = resolveFlowCollection.resolveFlowCollection(CN, ctx, token, onError);\n            break;\n        }\n    }\n    if (!tagToken)\n        return coll;\n    const tagName = ctx.directives.tagName(tagToken.source, msg => onError(tagToken, 'TAG_RESOLVE_FAILED', msg));\n    if (!tagName)\n        return coll;\n    // Cast needed due to: https://github.com/Microsoft/TypeScript/issues/3841\n    const Coll = coll.constructor;\n    if (tagName === '!' || tagName === Coll.tagName) {\n        coll.tag = Coll.tagName;\n        return coll;\n    }\n    const expType = Node.isMap(coll) ? 'map' : 'seq';\n    let tag = ctx.schema.tags.find(t => t.collection === expType && t.tag === tagName);\n    if (!tag) {\n        const kt = ctx.schema.knownTags[tagName];\n        if (kt && kt.collection === expType) {\n            ctx.schema.tags.push(Object.assign({}, kt, { default: false }));\n            tag = kt;\n        }\n        else {\n            onError(tagToken, 'TAG_RESOLVE_FAILED', `Unresolved tag: ${tagName}`, true);\n            coll.tag = tagName;\n            return coll;\n        }\n    }\n    const res = tag.resolve(coll, msg => onError(tagToken, 'TAG_RESOLVE_FAILED', msg), ctx.options);\n    const node = Node.isNode(res)\n        ? res\n        : new Scalar.Scalar(res);\n    node.range = coll.range;\n    node.tag = tagName;\n    if (tag?.format)\n        node.format = tag.format;\n    return node;\n}\n\nexports.composeCollection = composeCollection;\n","'use strict';\n\nvar Document = require('../doc/Document.js');\nvar composeNode = require('./compose-node.js');\nvar resolveEnd = require('./resolve-end.js');\nvar resolveProps = require('./resolve-props.js');\n\nfunction composeDoc(options, directives, { offset, start, value, end }, onError) {\n    const opts = Object.assign({ _directives: directives }, options);\n    const doc = new Document.Document(undefined, opts);\n    const ctx = {\n        atRoot: true,\n        directives: doc.directives,\n        options: doc.options,\n        schema: doc.schema\n    };\n    const props = resolveProps.resolveProps(start, {\n        indicator: 'doc-start',\n        next: value ?? end?.[0],\n        offset,\n        onError,\n        startOnNewline: true\n    });\n    if (props.found) {\n        doc.directives.docStart = true;\n        if (value &&\n            (value.type === 'block-map' || value.type === 'block-seq') &&\n            !props.hasNewline)\n            onError(props.end, 'MISSING_CHAR', 'Block collection cannot start on same line with directives-end marker');\n    }\n    doc.contents = value\n        ? composeNode.composeNode(ctx, value, props, onError)\n        : composeNode.composeEmptyNode(ctx, props.end, start, null, props, onError);\n    const contentEnd = doc.contents.range[2];\n    const re = resolveEnd.resolveEnd(end, contentEnd, false, onError);\n    if (re.comment)\n        doc.comment = re.comment;\n    doc.range = [offset, contentEnd, re.offset];\n    return doc;\n}\n\nexports.composeDoc = composeDoc;\n","'use strict';\n\nvar Alias = require('../nodes/Alias.js');\nvar composeCollection = require('./compose-collection.js');\nvar composeScalar = require('./compose-scalar.js');\nvar resolveEnd = require('./resolve-end.js');\nvar utilEmptyScalarPosition = require('./util-empty-scalar-position.js');\n\nconst CN = { composeNode, composeEmptyNode };\nfunction composeNode(ctx, token, props, onError) {\n    const { spaceBefore, comment, anchor, tag } = props;\n    let node;\n    let isSrcToken = true;\n    switch (token.type) {\n        case 'alias':\n            node = composeAlias(ctx, token, onError);\n            if (anchor || tag)\n                onError(token, 'ALIAS_PROPS', 'An alias node must not specify any properties');\n            break;\n        case 'scalar':\n        case 'single-quoted-scalar':\n        case 'double-quoted-scalar':\n        case 'block-scalar':\n            node = composeScalar.composeScalar(ctx, token, tag, onError);\n            if (anchor)\n                node.anchor = anchor.source.substring(1);\n            break;\n        case 'block-map':\n        case 'block-seq':\n        case 'flow-collection':\n            node = composeCollection.composeCollection(CN, ctx, token, tag, onError);\n            if (anchor)\n                node.anchor = anchor.source.substring(1);\n            break;\n        default: {\n            const message = token.type === 'error'\n                ? token.message\n                : `Unsupported token (type: ${token.type})`;\n            onError(token, 'UNEXPECTED_TOKEN', message);\n            node = composeEmptyNode(ctx, token.offset, undefined, null, props, onError);\n            isSrcToken = false;\n        }\n    }\n    if (anchor && node.anchor === '')\n        onError(anchor, 'BAD_ALIAS', 'Anchor cannot be an empty string');\n    if (spaceBefore)\n        node.spaceBefore = true;\n    if (comment) {\n        if (token.type === 'scalar' && token.source === '')\n            node.comment = comment;\n        else\n            node.commentBefore = comment;\n    }\n    // @ts-expect-error Type checking misses meaning of isSrcToken\n    if (ctx.options.keepSourceTokens && isSrcToken)\n        node.srcToken = token;\n    return node;\n}\nfunction composeEmptyNode(ctx, offset, before, pos, { spaceBefore, comment, anchor, tag, end }, onError) {\n    const token = {\n        type: 'scalar',\n        offset: utilEmptyScalarPosition.emptyScalarPosition(offset, before, pos),\n        indent: -1,\n        source: ''\n    };\n    const node = composeScalar.composeScalar(ctx, token, tag, onError);\n    if (anchor) {\n        node.anchor = anchor.source.substring(1);\n        if (node.anchor === '')\n            onError(anchor, 'BAD_ALIAS', 'Anchor cannot be an empty string');\n    }\n    if (spaceBefore)\n        node.spaceBefore = true;\n    if (comment) {\n        node.comment = comment;\n        node.range[2] = end;\n    }\n    return node;\n}\nfunction composeAlias({ options }, { offset, source, end }, onError) {\n    const alias = new Alias.Alias(source.substring(1));\n    if (alias.source === '')\n        onError(offset, 'BAD_ALIAS', 'Alias cannot be an empty string');\n    if (alias.source.endsWith(':'))\n        onError(offset + source.length - 1, 'BAD_ALIAS', 'Alias ending in : is ambiguous', true);\n    const valueEnd = offset + source.length;\n    const re = resolveEnd.resolveEnd(end, valueEnd, options.strict, onError);\n    alias.range = [offset, valueEnd, re.offset];\n    if (re.comment)\n        alias.comment = re.comment;\n    return alias;\n}\n\nexports.composeEmptyNode = composeEmptyNode;\nexports.composeNode = composeNode;\n","'use strict';\n\nvar Node = require('../nodes/Node.js');\nvar Scalar = require('../nodes/Scalar.js');\nvar resolveBlockScalar = require('./resolve-block-scalar.js');\nvar resolveFlowScalar = require('./resolve-flow-scalar.js');\n\nfunction composeScalar(ctx, token, tagToken, onError) {\n    const { value, type, comment, range } = token.type === 'block-scalar'\n        ? resolveBlockScalar.resolveBlockScalar(token, ctx.options.strict, onError)\n        : resolveFlowScalar.resolveFlowScalar(token, ctx.options.strict, onError);\n    const tagName = tagToken\n        ? ctx.directives.tagName(tagToken.source, msg => onError(tagToken, 'TAG_RESOLVE_FAILED', msg))\n        : null;\n    const tag = tagToken && tagName\n        ? findScalarTagByName(ctx.schema, value, tagName, tagToken, onError)\n        : token.type === 'scalar'\n            ? findScalarTagByTest(ctx, value, token, onError)\n            : ctx.schema[Node.SCALAR];\n    let scalar;\n    try {\n        const res = tag.resolve(value, msg => onError(tagToken ?? token, 'TAG_RESOLVE_FAILED', msg), ctx.options);\n        scalar = Node.isScalar(res) ? res : new Scalar.Scalar(res);\n    }\n    catch (error) {\n        const msg = error instanceof Error ? error.message : String(error);\n        onError(tagToken ?? token, 'TAG_RESOLVE_FAILED', msg);\n        scalar = new Scalar.Scalar(value);\n    }\n    scalar.range = range;\n    scalar.source = value;\n    if (type)\n        scalar.type = type;\n    if (tagName)\n        scalar.tag = tagName;\n    if (tag.format)\n        scalar.format = tag.format;\n    if (comment)\n        scalar.comment = comment;\n    return scalar;\n}\nfunction findScalarTagByName(schema, value, tagName, tagToken, onError) {\n    if (tagName === '!')\n        return schema[Node.SCALAR]; // non-specific tag\n    const matchWithTest = [];\n    for (const tag of schema.tags) {\n        if (!tag.collection && tag.tag === tagName) {\n            if (tag.default && tag.test)\n                matchWithTest.push(tag);\n            else\n                return tag;\n        }\n    }\n    for (const tag of matchWithTest)\n        if (tag.test?.test(value))\n            return tag;\n    const kt = schema.knownTags[tagName];\n    if (kt && !kt.collection) {\n        // Ensure that the known tag is available for stringifying,\n        // but does not get used by default.\n        schema.tags.push(Object.assign({}, kt, { default: false, test: undefined }));\n        return kt;\n    }\n    onError(tagToken, 'TAG_RESOLVE_FAILED', `Unresolved tag: ${tagName}`, tagName !== 'tag:yaml.org,2002:str');\n    return schema[Node.SCALAR];\n}\nfunction findScalarTagByTest({ directives, schema }, value, token, onError) {\n    const tag = schema.tags.find(tag => tag.default && tag.test?.test(value)) || schema[Node.SCALAR];\n    if (schema.compat) {\n        const compat = schema.compat.find(tag => tag.default && tag.test?.test(value)) ??\n            schema[Node.SCALAR];\n        if (tag.tag !== compat.tag) {\n            const ts = directives.tagString(tag.tag);\n            const cs = directives.tagString(compat.tag);\n            const msg = `Value may be parsed as either ${ts} or ${cs}`;\n            onError(token, 'TAG_RESOLVE_FAILED', msg, true);\n        }\n    }\n    return tag;\n}\n\nexports.composeScalar = composeScalar;\n","'use strict';\n\nvar directives = require('../doc/directives.js');\nvar Document = require('../doc/Document.js');\nvar errors = require('../errors.js');\nvar Node = require('../nodes/Node.js');\nvar composeDoc = require('./compose-doc.js');\nvar resolveEnd = require('./resolve-end.js');\n\nfunction getErrorPos(src) {\n    if (typeof src === 'number')\n        return [src, src + 1];\n    if (Array.isArray(src))\n        return src.length === 2 ? src : [src[0], src[1]];\n    const { offset, source } = src;\n    return [offset, offset + (typeof source === 'string' ? source.length : 1)];\n}\nfunction parsePrelude(prelude) {\n    let comment = '';\n    let atComment = false;\n    let afterEmptyLine = false;\n    for (let i = 0; i < prelude.length; ++i) {\n        const source = prelude[i];\n        switch (source[0]) {\n            case '#':\n                comment +=\n                    (comment === '' ? '' : afterEmptyLine ? '\\n\\n' : '\\n') +\n                        (source.substring(1) || ' ');\n                atComment = true;\n                afterEmptyLine = false;\n                break;\n            case '%':\n                if (prelude[i + 1]?.[0] !== '#')\n                    i += 1;\n                atComment = false;\n                break;\n            default:\n                // This may be wrong after doc-end, but in that case it doesn't matter\n                if (!atComment)\n                    afterEmptyLine = true;\n                atComment = false;\n        }\n    }\n    return { comment, afterEmptyLine };\n}\n/**\n * Compose a stream of CST nodes into a stream of YAML Documents.\n *\n * ```ts\n * import { Composer, Parser } from 'yaml'\n *\n * const src: string = ...\n * const tokens = new Parser().parse(src)\n * const docs = new Composer().compose(tokens)\n * ```\n */\nclass Composer {\n    constructor(options = {}) {\n        this.doc = null;\n        this.atDirectives = false;\n        this.prelude = [];\n        this.errors = [];\n        this.warnings = [];\n        this.onError = (source, code, message, warning) => {\n            const pos = getErrorPos(source);\n            if (warning)\n                this.warnings.push(new errors.YAMLWarning(pos, code, message));\n            else\n                this.errors.push(new errors.YAMLParseError(pos, code, message));\n        };\n        // eslint-disable-next-line @typescript-eslint/prefer-nullish-coalescing\n        this.directives = new directives.Directives({ version: options.version || '1.2' });\n        this.options = options;\n    }\n    decorate(doc, afterDoc) {\n        const { comment, afterEmptyLine } = parsePrelude(this.prelude);\n        //console.log({ dc: doc.comment, prelude, comment })\n        if (comment) {\n            const dc = doc.contents;\n            if (afterDoc) {\n                doc.comment = doc.comment ? `${doc.comment}\\n${comment}` : comment;\n            }\n            else if (afterEmptyLine || doc.directives.docStart || !dc) {\n                doc.commentBefore = comment;\n            }\n            else if (Node.isCollection(dc) && !dc.flow && dc.items.length > 0) {\n                let it = dc.items[0];\n                if (Node.isPair(it))\n                    it = it.key;\n                const cb = it.commentBefore;\n                it.commentBefore = cb ? `${comment}\\n${cb}` : comment;\n            }\n            else {\n                const cb = dc.commentBefore;\n                dc.commentBefore = cb ? `${comment}\\n${cb}` : comment;\n            }\n        }\n        if (afterDoc) {\n            Array.prototype.push.apply(doc.errors, this.errors);\n            Array.prototype.push.apply(doc.warnings, this.warnings);\n        }\n        else {\n            doc.errors = this.errors;\n            doc.warnings = this.warnings;\n        }\n        this.prelude = [];\n        this.errors = [];\n        this.warnings = [];\n    }\n    /**\n     * Current stream status information.\n     *\n     * Mostly useful at the end of input for an empty stream.\n     */\n    streamInfo() {\n        return {\n            comment: parsePrelude(this.prelude).comment,\n            directives: this.directives,\n            errors: this.errors,\n            warnings: this.warnings\n        };\n    }\n    /**\n     * Compose tokens into documents.\n     *\n     * @param forceDoc - If the stream contains no document, still emit a final document including any comments and directives that would be applied to a subsequent document.\n     * @param endOffset - Should be set if `forceDoc` is also set, to set the document range end and to indicate errors correctly.\n     */\n    *compose(tokens, forceDoc = false, endOffset = -1) {\n        for (const token of tokens)\n            yield* this.next(token);\n        yield* this.end(forceDoc, endOffset);\n    }\n    /** Advance the composer by one CST token. */\n    *next(token) {\n        if (process.env.LOG_STREAM)\n            console.dir(token, { depth: null });\n        switch (token.type) {\n            case 'directive':\n                this.directives.add(token.source, (offset, message, warning) => {\n                    const pos = getErrorPos(token);\n                    pos[0] += offset;\n                    this.onError(pos, 'BAD_DIRECTIVE', message, warning);\n                });\n                this.prelude.push(token.source);\n                this.atDirectives = true;\n                break;\n            case 'document': {\n                const doc = composeDoc.composeDoc(this.options, this.directives, token, this.onError);\n                if (this.atDirectives && !doc.directives.docStart)\n                    this.onError(token, 'MISSING_CHAR', 'Missing directives-end/doc-start indicator line');\n                this.decorate(doc, false);\n                if (this.doc)\n                    yield this.doc;\n                this.doc = doc;\n                this.atDirectives = false;\n                break;\n            }\n            case 'byte-order-mark':\n            case 'space':\n                break;\n            case 'comment':\n            case 'newline':\n                this.prelude.push(token.source);\n                break;\n            case 'error': {\n                const msg = token.source\n                    ? `${token.message}: ${JSON.stringify(token.source)}`\n                    : token.message;\n                const error = new errors.YAMLParseError(getErrorPos(token), 'UNEXPECTED_TOKEN', msg);\n                if (this.atDirectives || !this.doc)\n                    this.errors.push(error);\n                else\n                    this.doc.errors.push(error);\n                break;\n            }\n            case 'doc-end': {\n                if (!this.doc) {\n                    const msg = 'Unexpected doc-end without preceding document';\n                    this.errors.push(new errors.YAMLParseError(getErrorPos(token), 'UNEXPECTED_TOKEN', msg));\n                    break;\n                }\n                this.doc.directives.docEnd = true;\n                const end = resolveEnd.resolveEnd(token.end, token.offset + token.source.length, this.doc.options.strict, this.onError);\n                this.decorate(this.doc, true);\n                if (end.comment) {\n                    const dc = this.doc.comment;\n                    this.doc.comment = dc ? `${dc}\\n${end.comment}` : end.comment;\n                }\n                this.doc.range[2] = end.offset;\n                break;\n            }\n            default:\n                this.errors.push(new errors.YAMLParseError(getErrorPos(token), 'UNEXPECTED_TOKEN', `Unsupported token ${token.type}`));\n        }\n    }\n    /**\n     * Call at end of input to yield any remaining document.\n     *\n     * @param forceDoc - If the stream contains no document, still emit a final document including any comments and directives that would be applied to a subsequent document.\n     * @param endOffset - Should be set if `forceDoc` is also set, to set the document range end and to indicate errors correctly.\n     */\n    *end(forceDoc = false, endOffset = -1) {\n        if (this.doc) {\n            this.decorate(this.doc, true);\n            yield this.doc;\n            this.doc = null;\n        }\n        else if (forceDoc) {\n            const opts = Object.assign({ _directives: this.directives }, this.options);\n            const doc = new Document.Document(undefined, opts);\n            if (this.atDirectives)\n                this.onError(endOffset, 'MISSING_CHAR', 'Missing directives-end indicator line');\n            doc.range = [0, endOffset, endOffset];\n            this.decorate(doc, false);\n            yield doc;\n        }\n    }\n}\n\nexports.Composer = Composer;\n","'use strict';\n\nvar Pair = require('../nodes/Pair.js');\nvar YAMLMap = require('../nodes/YAMLMap.js');\nvar resolveProps = require('./resolve-props.js');\nvar utilContainsNewline = require('./util-contains-newline.js');\nvar utilFlowIndentCheck = require('./util-flow-indent-check.js');\nvar utilMapIncludes = require('./util-map-includes.js');\n\nconst startColMsg = 'All mapping items must start at the same column';\nfunction resolveBlockMap({ composeNode, composeEmptyNode }, ctx, bm, onError) {\n    const map = new YAMLMap.YAMLMap(ctx.schema);\n    if (ctx.atRoot)\n        ctx.atRoot = false;\n    let offset = bm.offset;\n    let commentEnd = null;\n    for (const collItem of bm.items) {\n        const { start, key, sep, value } = collItem;\n        // key properties\n        const keyProps = resolveProps.resolveProps(start, {\n            indicator: 'explicit-key-ind',\n            next: key ?? sep?.[0],\n            offset,\n            onError,\n            startOnNewline: true\n        });\n        const implicitKey = !keyProps.found;\n        if (implicitKey) {\n            if (key) {\n                if (key.type === 'block-seq')\n                    onError(offset, 'BLOCK_AS_IMPLICIT_KEY', 'A block sequence may not be used as an implicit map key');\n                else if ('indent' in key && key.indent !== bm.indent)\n                    onError(offset, 'BAD_INDENT', startColMsg);\n            }\n            if (!keyProps.anchor && !keyProps.tag && !sep) {\n                commentEnd = keyProps.end;\n                if (keyProps.comment) {\n                    if (map.comment)\n                        map.comment += '\\n' + keyProps.comment;\n                    else\n                        map.comment = keyProps.comment;\n                }\n                continue;\n            }\n            if (keyProps.hasNewlineAfterProp || utilContainsNewline.containsNewline(key)) {\n                onError(key ?? start[start.length - 1], 'MULTILINE_IMPLICIT_KEY', 'Implicit keys need to be on a single line');\n            }\n        }\n        else if (keyProps.found?.indent !== bm.indent) {\n            onError(offset, 'BAD_INDENT', startColMsg);\n        }\n        // key value\n        const keyStart = keyProps.end;\n        const keyNode = key\n            ? composeNode(ctx, key, keyProps, onError)\n            : composeEmptyNode(ctx, keyStart, start, null, keyProps, onError);\n        if (ctx.schema.compat)\n            utilFlowIndentCheck.flowIndentCheck(bm.indent, key, onError);\n        if (utilMapIncludes.mapIncludes(ctx, map.items, keyNode))\n            onError(keyStart, 'DUPLICATE_KEY', 'Map keys must be unique');\n        // value properties\n        const valueProps = resolveProps.resolveProps(sep ?? [], {\n            indicator: 'map-value-ind',\n            next: value,\n            offset: keyNode.range[2],\n            onError,\n            startOnNewline: !key || key.type === 'block-scalar'\n        });\n        offset = valueProps.end;\n        if (valueProps.found) {\n            if (implicitKey) {\n                if (value?.type === 'block-map' && !valueProps.hasNewline)\n                    onError(offset, 'BLOCK_AS_IMPLICIT_KEY', 'Nested mappings are not allowed in compact mappings');\n                if (ctx.options.strict &&\n                    keyProps.start < valueProps.found.offset - 1024)\n                    onError(keyNode.range, 'KEY_OVER_1024_CHARS', 'The : indicator must be at most 1024 chars after the start of an implicit block mapping key');\n            }\n            // value value\n            const valueNode = value\n                ? composeNode(ctx, value, valueProps, onError)\n                : composeEmptyNode(ctx, offset, sep, null, valueProps, onError);\n            if (ctx.schema.compat)\n                utilFlowIndentCheck.flowIndentCheck(bm.indent, value, onError);\n            offset = valueNode.range[2];\n            const pair = new Pair.Pair(keyNode, valueNode);\n            if (ctx.options.keepSourceTokens)\n                pair.srcToken = collItem;\n            map.items.push(pair);\n        }\n        else {\n            // key with no value\n            if (implicitKey)\n                onError(keyNode.range, 'MISSING_CHAR', 'Implicit map keys need to be followed by map values');\n            if (valueProps.comment) {\n                if (keyNode.comment)\n                    keyNode.comment += '\\n' + valueProps.comment;\n                else\n                    keyNode.comment = valueProps.comment;\n            }\n            const pair = new Pair.Pair(keyNode);\n            if (ctx.options.keepSourceTokens)\n                pair.srcToken = collItem;\n            map.items.push(pair);\n        }\n    }\n    if (commentEnd && commentEnd < offset)\n        onError(commentEnd, 'IMPOSSIBLE', 'Map comment with trailing content');\n    map.range = [bm.offset, offset, commentEnd ?? offset];\n    return map;\n}\n\nexports.resolveBlockMap = resolveBlockMap;\n","'use strict';\n\nvar Scalar = require('../nodes/Scalar.js');\n\nfunction resolveBlockScalar(scalar, strict, onError) {\n    const start = scalar.offset;\n    const header = parseBlockScalarHeader(scalar, strict, onError);\n    if (!header)\n        return { value: '', type: null, comment: '', range: [start, start, start] };\n    const type = header.mode === '>' ? Scalar.Scalar.BLOCK_FOLDED : Scalar.Scalar.BLOCK_LITERAL;\n    const lines = scalar.source ? splitLines(scalar.source) : [];\n    // determine the end of content & start of chomping\n    let chompStart = lines.length;\n    for (let i = lines.length - 1; i >= 0; --i) {\n        const content = lines[i][1];\n        if (content === '' || content === '\\r')\n            chompStart = i;\n        else\n            break;\n    }\n    // shortcut for empty contents\n    if (chompStart === 0) {\n        const value = header.chomp === '+' && lines.length > 0\n            ? '\\n'.repeat(Math.max(1, lines.length - 1))\n            : '';\n        let end = start + header.length;\n        if (scalar.source)\n            end += scalar.source.length;\n        return { value, type, comment: header.comment, range: [start, end, end] };\n    }\n    // find the indentation level to trim from start\n    let trimIndent = scalar.indent + header.indent;\n    let offset = scalar.offset + header.length;\n    let contentStart = 0;\n    for (let i = 0; i < chompStart; ++i) {\n        const [indent, content] = lines[i];\n        if (content === '' || content === '\\r') {\n            if (header.indent === 0 && indent.length > trimIndent)\n                trimIndent = indent.length;\n        }\n        else {\n            if (indent.length < trimIndent) {\n                const message = 'Block scalars with more-indented leading empty lines must use an explicit indentation indicator';\n                onError(offset + indent.length, 'MISSING_CHAR', message);\n            }\n            if (header.indent === 0)\n                trimIndent = indent.length;\n            contentStart = i;\n            break;\n        }\n        offset += indent.length + content.length + 1;\n    }\n    // include trailing more-indented empty lines in content\n    for (let i = lines.length - 1; i >= chompStart; --i) {\n        if (lines[i][0].length > trimIndent)\n            chompStart = i + 1;\n    }\n    let value = '';\n    let sep = '';\n    let prevMoreIndented = false;\n    // leading whitespace is kept intact\n    for (let i = 0; i < contentStart; ++i)\n        value += lines[i][0].slice(trimIndent) + '\\n';\n    for (let i = contentStart; i < chompStart; ++i) {\n        let [indent, content] = lines[i];\n        offset += indent.length + content.length + 1;\n        const crlf = content[content.length - 1] === '\\r';\n        if (crlf)\n            content = content.slice(0, -1);\n        /* istanbul ignore if already caught in lexer */\n        if (content && indent.length < trimIndent) {\n            const src = header.indent\n                ? 'explicit indentation indicator'\n                : 'first line';\n            const message = `Block scalar lines must not be less indented than their ${src}`;\n            onError(offset - content.length - (crlf ? 2 : 1), 'BAD_INDENT', message);\n            indent = '';\n        }\n        if (type === Scalar.Scalar.BLOCK_LITERAL) {\n            value += sep + indent.slice(trimIndent) + content;\n            sep = '\\n';\n        }\n        else if (indent.length > trimIndent || content[0] === '\\t') {\n            // more-indented content within a folded block\n            if (sep === ' ')\n                sep = '\\n';\n            else if (!prevMoreIndented && sep === '\\n')\n                sep = '\\n\\n';\n            value += sep + indent.slice(trimIndent) + content;\n            sep = '\\n';\n            prevMoreIndented = true;\n        }\n        else if (content === '') {\n            // empty line\n            if (sep === '\\n')\n                value += '\\n';\n            else\n                sep = '\\n';\n        }\n        else {\n            value += sep + content;\n            sep = ' ';\n            prevMoreIndented = false;\n        }\n    }\n    switch (header.chomp) {\n        case '-':\n            break;\n        case '+':\n            for (let i = chompStart; i < lines.length; ++i)\n                value += '\\n' + lines[i][0].slice(trimIndent);\n            if (value[value.length - 1] !== '\\n')\n                value += '\\n';\n            break;\n        default:\n            value += '\\n';\n    }\n    const end = start + header.length + scalar.source.length;\n    return { value, type, comment: header.comment, range: [start, end, end] };\n}\nfunction parseBlockScalarHeader({ offset, props }, strict, onError) {\n    /* istanbul ignore if should not happen */\n    if (props[0].type !== 'block-scalar-header') {\n        onError(props[0], 'IMPOSSIBLE', 'Block scalar header not found');\n        return null;\n    }\n    const { source } = props[0];\n    const mode = source[0];\n    let indent = 0;\n    let chomp = '';\n    let error = -1;\n    for (let i = 1; i < source.length; ++i) {\n        const ch = source[i];\n        if (!chomp && (ch === '-' || ch === '+'))\n            chomp = ch;\n        else {\n            const n = Number(ch);\n            if (!indent && n)\n                indent = n;\n            else if (error === -1)\n                error = offset + i;\n        }\n    }\n    if (error !== -1)\n        onError(error, 'UNEXPECTED_TOKEN', `Block scalar header includes extra characters: ${source}`);\n    let hasSpace = false;\n    let comment = '';\n    let length = source.length;\n    for (let i = 1; i < props.length; ++i) {\n        const token = props[i];\n        switch (token.type) {\n            case 'space':\n                hasSpace = true;\n            // fallthrough\n            case 'newline':\n                length += token.source.length;\n                break;\n            case 'comment':\n                if (strict && !hasSpace) {\n                    const message = 'Comments must be separated from other tokens by white space characters';\n                    onError(token, 'MISSING_CHAR', message);\n                }\n                length += token.source.length;\n                comment = token.source.substring(1);\n                break;\n            case 'error':\n                onError(token, 'UNEXPECTED_TOKEN', token.message);\n                length += token.source.length;\n                break;\n            /* istanbul ignore next should not happen */\n            default: {\n                const message = `Unexpected token in block scalar header: ${token.type}`;\n                onError(token, 'UNEXPECTED_TOKEN', message);\n                const ts = token.source;\n                if (ts && typeof ts === 'string')\n                    length += ts.length;\n            }\n        }\n    }\n    return { mode, indent, chomp, comment, length };\n}\n/** @returns Array of lines split up as `[indent, content]` */\nfunction splitLines(source) {\n    const split = source.split(/\\n( *)/);\n    const first = split[0];\n    const m = first.match(/^( *)/);\n    const line0 = m?.[1]\n        ? [m[1], first.slice(m[1].length)]\n        : ['', first];\n    const lines = [line0];\n    for (let i = 1; i < split.length; i += 2)\n        lines.push([split[i], split[i + 1]]);\n    return lines;\n}\n\nexports.resolveBlockScalar = resolveBlockScalar;\n","'use strict';\n\nvar YAMLSeq = require('../nodes/YAMLSeq.js');\nvar resolveProps = require('./resolve-props.js');\nvar utilFlowIndentCheck = require('./util-flow-indent-check.js');\n\nfunction resolveBlockSeq({ composeNode, composeEmptyNode }, ctx, bs, onError) {\n    const seq = new YAMLSeq.YAMLSeq(ctx.schema);\n    if (ctx.atRoot)\n        ctx.atRoot = false;\n    let offset = bs.offset;\n    let commentEnd = null;\n    for (const { start, value } of bs.items) {\n        const props = resolveProps.resolveProps(start, {\n            indicator: 'seq-item-ind',\n            next: value,\n            offset,\n            onError,\n            startOnNewline: true\n        });\n        if (!props.found) {\n            if (props.anchor || props.tag || value) {\n                if (value && value.type === 'block-seq')\n                    onError(props.end, 'BAD_INDENT', 'All sequence items must start at the same column');\n                else\n                    onError(offset, 'MISSING_CHAR', 'Sequence item without - indicator');\n            }\n            else {\n                commentEnd = props.end;\n                if (props.comment)\n                    seq.comment = props.comment;\n                continue;\n            }\n        }\n        const node = value\n            ? composeNode(ctx, value, props, onError)\n            : composeEmptyNode(ctx, props.end, start, null, props, onError);\n        if (ctx.schema.compat)\n            utilFlowIndentCheck.flowIndentCheck(bs.indent, value, onError);\n        offset = node.range[2];\n        seq.items.push(node);\n    }\n    seq.range = [bs.offset, offset, commentEnd ?? offset];\n    return seq;\n}\n\nexports.resolveBlockSeq = resolveBlockSeq;\n","'use strict';\n\nfunction resolveEnd(end, offset, reqSpace, onError) {\n    let comment = '';\n    if (end) {\n        let hasSpace = false;\n        let sep = '';\n        for (const token of end) {\n            const { source, type } = token;\n            switch (type) {\n                case 'space':\n                    hasSpace = true;\n                    break;\n                case 'comment': {\n                    if (reqSpace && !hasSpace)\n                        onError(token, 'MISSING_CHAR', 'Comments must be separated from other tokens by white space characters');\n                    const cb = source.substring(1) || ' ';\n                    if (!comment)\n                        comment = cb;\n                    else\n                        comment += sep + cb;\n                    sep = '';\n                    break;\n                }\n                case 'newline':\n                    if (comment)\n                        sep += source;\n                    hasSpace = true;\n                    break;\n                default:\n                    onError(token, 'UNEXPECTED_TOKEN', `Unexpected ${type} at node end`);\n            }\n            offset += source.length;\n        }\n    }\n    return { comment, offset };\n}\n\nexports.resolveEnd = resolveEnd;\n","'use strict';\n\nvar Node = require('../nodes/Node.js');\nvar Pair = require('../nodes/Pair.js');\nvar YAMLMap = require('../nodes/YAMLMap.js');\nvar YAMLSeq = require('../nodes/YAMLSeq.js');\nvar resolveEnd = require('./resolve-end.js');\nvar resolveProps = require('./resolve-props.js');\nvar utilContainsNewline = require('./util-contains-newline.js');\nvar utilMapIncludes = require('./util-map-includes.js');\n\nconst blockMsg = 'Block collections are not allowed within flow collections';\nconst isBlock = (token) => token && (token.type === 'block-map' || token.type === 'block-seq');\nfunction resolveFlowCollection({ composeNode, composeEmptyNode }, ctx, fc, onError) {\n    const isMap = fc.start.source === '{';\n    const fcName = isMap ? 'flow map' : 'flow sequence';\n    const coll = isMap\n        ? new YAMLMap.YAMLMap(ctx.schema)\n        : new YAMLSeq.YAMLSeq(ctx.schema);\n    coll.flow = true;\n    const atRoot = ctx.atRoot;\n    if (atRoot)\n        ctx.atRoot = false;\n    let offset = fc.offset + fc.start.source.length;\n    for (let i = 0; i < fc.items.length; ++i) {\n        const collItem = fc.items[i];\n        const { start, key, sep, value } = collItem;\n        const props = resolveProps.resolveProps(start, {\n            flow: fcName,\n            indicator: 'explicit-key-ind',\n            next: key ?? sep?.[0],\n            offset,\n            onError,\n            startOnNewline: false\n        });\n        if (!props.found) {\n            if (!props.anchor && !props.tag && !sep && !value) {\n                if (i === 0 && props.comma)\n                    onError(props.comma, 'UNEXPECTED_TOKEN', `Unexpected , in ${fcName}`);\n                else if (i < fc.items.length - 1)\n                    onError(props.start, 'UNEXPECTED_TOKEN', `Unexpected empty item in ${fcName}`);\n                if (props.comment) {\n                    if (coll.comment)\n                        coll.comment += '\\n' + props.comment;\n                    else\n                        coll.comment = props.comment;\n                }\n                offset = props.end;\n                continue;\n            }\n            if (!isMap && ctx.options.strict && utilContainsNewline.containsNewline(key))\n                onError(key, // checked by containsNewline()\n                'MULTILINE_IMPLICIT_KEY', 'Implicit keys of flow sequence pairs need to be on a single line');\n        }\n        if (i === 0) {\n            if (props.comma)\n                onError(props.comma, 'UNEXPECTED_TOKEN', `Unexpected , in ${fcName}`);\n        }\n        else {\n            if (!props.comma)\n                onError(props.start, 'MISSING_CHAR', `Missing , between ${fcName} items`);\n            if (props.comment) {\n                let prevItemComment = '';\n                loop: for (const st of start) {\n                    switch (st.type) {\n                        case 'comma':\n                        case 'space':\n                            break;\n                        case 'comment':\n                            prevItemComment = st.source.substring(1);\n                            break loop;\n                        default:\n                            break loop;\n                    }\n                }\n                if (prevItemComment) {\n                    let prev = coll.items[coll.items.length - 1];\n                    if (Node.isPair(prev))\n                        prev = prev.value ?? prev.key;\n                    if (prev.comment)\n                        prev.comment += '\\n' + prevItemComment;\n                    else\n                        prev.comment = prevItemComment;\n                    props.comment = props.comment.substring(prevItemComment.length + 1);\n                }\n            }\n        }\n        if (!isMap && !sep && !props.found) {\n            // item is a value in a seq\n            // → key & sep are empty, start does not include ? or :\n            const valueNode = value\n                ? composeNode(ctx, value, props, onError)\n                : composeEmptyNode(ctx, props.end, sep, null, props, onError);\n            coll.items.push(valueNode);\n            offset = valueNode.range[2];\n            if (isBlock(value))\n                onError(valueNode.range, 'BLOCK_IN_FLOW', blockMsg);\n        }\n        else {\n            // item is a key+value pair\n            // key value\n            const keyStart = props.end;\n            const keyNode = key\n                ? composeNode(ctx, key, props, onError)\n                : composeEmptyNode(ctx, keyStart, start, null, props, onError);\n            if (isBlock(key))\n                onError(keyNode.range, 'BLOCK_IN_FLOW', blockMsg);\n            // value properties\n            const valueProps = resolveProps.resolveProps(sep ?? [], {\n                flow: fcName,\n                indicator: 'map-value-ind',\n                next: value,\n                offset: keyNode.range[2],\n                onError,\n                startOnNewline: false\n            });\n            if (valueProps.found) {\n                if (!isMap && !props.found && ctx.options.strict) {\n                    if (sep)\n                        for (const st of sep) {\n                            if (st === valueProps.found)\n                                break;\n                            if (st.type === 'newline') {\n                                onError(st, 'MULTILINE_IMPLICIT_KEY', 'Implicit keys of flow sequence pairs need to be on a single line');\n                                break;\n                            }\n                        }\n                    if (props.start < valueProps.found.offset - 1024)\n                        onError(valueProps.found, 'KEY_OVER_1024_CHARS', 'The : indicator must be at most 1024 chars after the start of an implicit flow sequence key');\n                }\n            }\n            else if (value) {\n                if ('source' in value && value.source && value.source[0] === ':')\n                    onError(value, 'MISSING_CHAR', `Missing space after : in ${fcName}`);\n                else\n                    onError(valueProps.start, 'MISSING_CHAR', `Missing , or : between ${fcName} items`);\n            }\n            // value value\n            const valueNode = value\n                ? composeNode(ctx, value, valueProps, onError)\n                : valueProps.found\n                    ? composeEmptyNode(ctx, valueProps.end, sep, null, valueProps, onError)\n                    : null;\n            if (valueNode) {\n                if (isBlock(value))\n                    onError(valueNode.range, 'BLOCK_IN_FLOW', blockMsg);\n            }\n            else if (valueProps.comment) {\n                if (keyNode.comment)\n                    keyNode.comment += '\\n' + valueProps.comment;\n                else\n                    keyNode.comment = valueProps.comment;\n            }\n            const pair = new Pair.Pair(keyNode, valueNode);\n            if (ctx.options.keepSourceTokens)\n                pair.srcToken = collItem;\n            if (isMap) {\n                const map = coll;\n                if (utilMapIncludes.mapIncludes(ctx, map.items, keyNode))\n                    onError(keyStart, 'DUPLICATE_KEY', 'Map keys must be unique');\n                map.items.push(pair);\n            }\n            else {\n                const map = new YAMLMap.YAMLMap(ctx.schema);\n                map.flow = true;\n                map.items.push(pair);\n                coll.items.push(map);\n            }\n            offset = valueNode ? valueNode.range[2] : valueProps.end;\n        }\n    }\n    const expectedEnd = isMap ? '}' : ']';\n    const [ce, ...ee] = fc.end;\n    let cePos = offset;\n    if (ce && ce.source === expectedEnd)\n        cePos = ce.offset + ce.source.length;\n    else {\n        const name = fcName[0].toUpperCase() + fcName.substring(1);\n        const msg = atRoot\n            ? `${name} must end with a ${expectedEnd}`\n            : `${name} in block collection must be sufficiently indented and end with a ${expectedEnd}`;\n        onError(offset, atRoot ? 'MISSING_CHAR' : 'BAD_INDENT', msg);\n        if (ce && ce.source.length !== 1)\n            ee.unshift(ce);\n    }\n    if (ee.length > 0) {\n        const end = resolveEnd.resolveEnd(ee, cePos, ctx.options.strict, onError);\n        if (end.comment) {\n            if (coll.comment)\n                coll.comment += '\\n' + end.comment;\n            else\n                coll.comment = end.comment;\n        }\n        coll.range = [fc.offset, cePos, end.offset];\n    }\n    else {\n        coll.range = [fc.offset, cePos, cePos];\n    }\n    return coll;\n}\n\nexports.resolveFlowCollection = resolveFlowCollection;\n","'use strict';\n\nvar Scalar = require('../nodes/Scalar.js');\nvar resolveEnd = require('./resolve-end.js');\n\nfunction resolveFlowScalar(scalar, strict, onError) {\n    const { offset, type, source, end } = scalar;\n    let _type;\n    let value;\n    const _onError = (rel, code, msg) => onError(offset + rel, code, msg);\n    switch (type) {\n        case 'scalar':\n            _type = Scalar.Scalar.PLAIN;\n            value = plainValue(source, _onError);\n            break;\n        case 'single-quoted-scalar':\n            _type = Scalar.Scalar.QUOTE_SINGLE;\n            value = singleQuotedValue(source, _onError);\n            break;\n        case 'double-quoted-scalar':\n            _type = Scalar.Scalar.QUOTE_DOUBLE;\n            value = doubleQuotedValue(source, _onError);\n            break;\n        /* istanbul ignore next should not happen */\n        default:\n            onError(scalar, 'UNEXPECTED_TOKEN', `Expected a flow scalar value, but found: ${type}`);\n            return {\n                value: '',\n                type: null,\n                comment: '',\n                range: [offset, offset + source.length, offset + source.length]\n            };\n    }\n    const valueEnd = offset + source.length;\n    const re = resolveEnd.resolveEnd(end, valueEnd, strict, onError);\n    return {\n        value,\n        type: _type,\n        comment: re.comment,\n        range: [offset, valueEnd, re.offset]\n    };\n}\nfunction plainValue(source, onError) {\n    let badChar = '';\n    switch (source[0]) {\n        /* istanbul ignore next should not happen */\n        case '\\t':\n            badChar = 'a tab character';\n            break;\n        case ',':\n            badChar = 'flow indicator character ,';\n            break;\n        case '%':\n            badChar = 'directive indicator character %';\n            break;\n        case '|':\n        case '>': {\n            badChar = `block scalar indicator ${source[0]}`;\n            break;\n        }\n        case '@':\n        case '`': {\n            badChar = `reserved character ${source[0]}`;\n            break;\n        }\n    }\n    if (badChar)\n        onError(0, 'BAD_SCALAR_START', `Plain value cannot start with ${badChar}`);\n    return foldLines(source);\n}\nfunction singleQuotedValue(source, onError) {\n    if (source[source.length - 1] !== \"'\" || source.length === 1)\n        onError(source.length, 'MISSING_CHAR', \"Missing closing 'quote\");\n    return foldLines(source.slice(1, -1)).replace(/''/g, \"'\");\n}\nfunction foldLines(source) {\n    /**\n     * The negative lookbehind here and in the `re` RegExp is to\n     * prevent causing a polynomial search time in certain cases.\n     *\n     * The try-catch is for Safari, which doesn't support this yet:\n     * https://caniuse.com/js-regexp-lookbehind\n     */\n    let first, line;\n    try {\n        first = new RegExp('(.*?)(?<![ \\t])[ \\t]*\\r?\\n', 'sy');\n        line = new RegExp('[ \\t]*(.*?)(?:(?<![ \\t])[ \\t]*)?\\r?\\n', 'sy');\n    }\n    catch (_) {\n        first = /(.*?)[ \\t]*\\r?\\n/sy;\n        line = /[ \\t]*(.*?)[ \\t]*\\r?\\n/sy;\n    }\n    let match = first.exec(source);\n    if (!match)\n        return source;\n    let res = match[1];\n    let sep = ' ';\n    let pos = first.lastIndex;\n    line.lastIndex = pos;\n    while ((match = line.exec(source))) {\n        if (match[1] === '') {\n            if (sep === '\\n')\n                res += sep;\n            else\n                sep = '\\n';\n        }\n        else {\n            res += sep + match[1];\n            sep = ' ';\n        }\n        pos = line.lastIndex;\n    }\n    const last = /[ \\t]*(.*)/sy;\n    last.lastIndex = pos;\n    match = last.exec(source);\n    return res + sep + (match?.[1] ?? '');\n}\nfunction doubleQuotedValue(source, onError) {\n    let res = '';\n    for (let i = 1; i < source.length - 1; ++i) {\n        const ch = source[i];\n        if (ch === '\\r' && source[i + 1] === '\\n')\n            continue;\n        if (ch === '\\n') {\n            const { fold, offset } = foldNewline(source, i);\n            res += fold;\n            i = offset;\n        }\n        else if (ch === '\\\\') {\n            let next = source[++i];\n            const cc = escapeCodes[next];\n            if (cc)\n                res += cc;\n            else if (next === '\\n') {\n                // skip escaped newlines, but still trim the following line\n                next = source[i + 1];\n                while (next === ' ' || next === '\\t')\n                    next = source[++i + 1];\n            }\n            else if (next === '\\r' && source[i + 1] === '\\n') {\n                // skip escaped CRLF newlines, but still trim the following line\n                next = source[++i + 1];\n                while (next === ' ' || next === '\\t')\n                    next = source[++i + 1];\n            }\n            else if (next === 'x' || next === 'u' || next === 'U') {\n                const length = { x: 2, u: 4, U: 8 }[next];\n                res += parseCharCode(source, i + 1, length, onError);\n                i += length;\n            }\n            else {\n                const raw = source.substr(i - 1, 2);\n                onError(i - 1, 'BAD_DQ_ESCAPE', `Invalid escape sequence ${raw}`);\n                res += raw;\n            }\n        }\n        else if (ch === ' ' || ch === '\\t') {\n            // trim trailing whitespace\n            const wsStart = i;\n            let next = source[i + 1];\n            while (next === ' ' || next === '\\t')\n                next = source[++i + 1];\n            if (next !== '\\n' && !(next === '\\r' && source[i + 2] === '\\n'))\n                res += i > wsStart ? source.slice(wsStart, i + 1) : ch;\n        }\n        else {\n            res += ch;\n        }\n    }\n    if (source[source.length - 1] !== '\"' || source.length === 1)\n        onError(source.length, 'MISSING_CHAR', 'Missing closing \"quote');\n    return res;\n}\n/**\n * Fold a single newline into a space, multiple newlines to N - 1 newlines.\n * Presumes `source[offset] === '\\n'`\n */\nfunction foldNewline(source, offset) {\n    let fold = '';\n    let ch = source[offset + 1];\n    while (ch === ' ' || ch === '\\t' || ch === '\\n' || ch === '\\r') {\n        if (ch === '\\r' && source[offset + 2] !== '\\n')\n            break;\n        if (ch === '\\n')\n            fold += '\\n';\n        offset += 1;\n        ch = source[offset + 1];\n    }\n    if (!fold)\n        fold = ' ';\n    return { fold, offset };\n}\nconst escapeCodes = {\n    '0': '\\0',\n    a: '\\x07',\n    b: '\\b',\n    e: '\\x1b',\n    f: '\\f',\n    n: '\\n',\n    r: '\\r',\n    t: '\\t',\n    v: '\\v',\n    N: '\\u0085',\n    _: '\\u00a0',\n    L: '\\u2028',\n    P: '\\u2029',\n    ' ': ' ',\n    '\"': '\"',\n    '/': '/',\n    '\\\\': '\\\\',\n    '\\t': '\\t'\n};\nfunction parseCharCode(source, offset, length, onError) {\n    const cc = source.substr(offset, length);\n    const ok = cc.length === length && /^[0-9a-fA-F]+$/.test(cc);\n    const code = ok ? parseInt(cc, 16) : NaN;\n    if (isNaN(code)) {\n        const raw = source.substr(offset - 2, length + 2);\n        onError(offset - 2, 'BAD_DQ_ESCAPE', `Invalid escape sequence ${raw}`);\n        return raw;\n    }\n    return String.fromCodePoint(code);\n}\n\nexports.resolveFlowScalar = resolveFlowScalar;\n","'use strict';\n\nfunction resolveProps(tokens, { flow, indicator, next, offset, onError, startOnNewline }) {\n    let spaceBefore = false;\n    let atNewline = startOnNewline;\n    let hasSpace = startOnNewline;\n    let comment = '';\n    let commentSep = '';\n    let hasNewline = false;\n    let hasNewlineAfterProp = false;\n    let reqSpace = false;\n    let anchor = null;\n    let tag = null;\n    let comma = null;\n    let found = null;\n    let start = null;\n    for (const token of tokens) {\n        if (reqSpace) {\n            if (token.type !== 'space' &&\n                token.type !== 'newline' &&\n                token.type !== 'comma')\n                onError(token.offset, 'MISSING_CHAR', 'Tags and anchors must be separated from the next token by white space');\n            reqSpace = false;\n        }\n        switch (token.type) {\n            case 'space':\n                // At the doc level, tabs at line start may be parsed\n                // as leading white space rather than indentation.\n                // In a flow collection, only the parser handles indent.\n                if (!flow &&\n                    atNewline &&\n                    indicator !== 'doc-start' &&\n                    token.source[0] === '\\t')\n                    onError(token, 'TAB_AS_INDENT', 'Tabs are not allowed as indentation');\n                hasSpace = true;\n                break;\n            case 'comment': {\n                if (!hasSpace)\n                    onError(token, 'MISSING_CHAR', 'Comments must be separated from other tokens by white space characters');\n                const cb = token.source.substring(1) || ' ';\n                if (!comment)\n                    comment = cb;\n                else\n                    comment += commentSep + cb;\n                commentSep = '';\n                atNewline = false;\n                break;\n            }\n            case 'newline':\n                if (atNewline) {\n                    if (comment)\n                        comment += token.source;\n                    else\n                        spaceBefore = true;\n                }\n                else\n                    commentSep += token.source;\n                atNewline = true;\n                hasNewline = true;\n                if (anchor || tag)\n                    hasNewlineAfterProp = true;\n                hasSpace = true;\n                break;\n            case 'anchor':\n                if (anchor)\n                    onError(token, 'MULTIPLE_ANCHORS', 'A node can have at most one anchor');\n                if (token.source.endsWith(':'))\n                    onError(token.offset + token.source.length - 1, 'BAD_ALIAS', 'Anchor ending in : is ambiguous', true);\n                anchor = token;\n                if (start === null)\n                    start = token.offset;\n                atNewline = false;\n                hasSpace = false;\n                reqSpace = true;\n                break;\n            case 'tag': {\n                if (tag)\n                    onError(token, 'MULTIPLE_TAGS', 'A node can have at most one tag');\n                tag = token;\n                if (start === null)\n                    start = token.offset;\n                atNewline = false;\n                hasSpace = false;\n                reqSpace = true;\n                break;\n            }\n            case indicator:\n                // Could here handle preceding comments differently\n                if (anchor || tag)\n                    onError(token, 'BAD_PROP_ORDER', `Anchors and tags must be after the ${token.source} indicator`);\n                if (found)\n                    onError(token, 'UNEXPECTED_TOKEN', `Unexpected ${token.source} in ${flow ?? 'collection'}`);\n                found = token;\n                atNewline = false;\n                hasSpace = false;\n                break;\n            case 'comma':\n                if (flow) {\n                    if (comma)\n                        onError(token, 'UNEXPECTED_TOKEN', `Unexpected , in ${flow}`);\n                    comma = token;\n                    atNewline = false;\n                    hasSpace = false;\n                    break;\n                }\n            // else fallthrough\n            default:\n                onError(token, 'UNEXPECTED_TOKEN', `Unexpected ${token.type} token`);\n                atNewline = false;\n                hasSpace = false;\n        }\n    }\n    const last = tokens[tokens.length - 1];\n    const end = last ? last.offset + last.source.length : offset;\n    if (reqSpace &&\n        next &&\n        next.type !== 'space' &&\n        next.type !== 'newline' &&\n        next.type !== 'comma' &&\n        (next.type !== 'scalar' || next.source !== ''))\n        onError(next.offset, 'MISSING_CHAR', 'Tags and anchors must be separated from the next token by white space');\n    return {\n        comma,\n        found,\n        spaceBefore,\n        comment,\n        hasNewline,\n        hasNewlineAfterProp,\n        anchor,\n        tag,\n        end,\n        start: start ?? end\n    };\n}\n\nexports.resolveProps = resolveProps;\n","'use strict';\n\nfunction containsNewline(key) {\n    if (!key)\n        return null;\n    switch (key.type) {\n        case 'alias':\n        case 'scalar':\n        case 'double-quoted-scalar':\n        case 'single-quoted-scalar':\n            if (key.source.includes('\\n'))\n                return true;\n            if (key.end)\n                for (const st of key.end)\n                    if (st.type === 'newline')\n                        return true;\n            return false;\n        case 'flow-collection':\n            for (const it of key.items) {\n                for (const st of it.start)\n                    if (st.type === 'newline')\n                        return true;\n                if (it.sep)\n                    for (const st of it.sep)\n                        if (st.type === 'newline')\n                            return true;\n                if (containsNewline(it.key) || containsNewline(it.value))\n                    return true;\n            }\n            return false;\n        default:\n            return true;\n    }\n}\n\nexports.containsNewline = containsNewline;\n","'use strict';\n\nfunction emptyScalarPosition(offset, before, pos) {\n    if (before) {\n        if (pos === null)\n            pos = before.length;\n        for (let i = pos - 1; i >= 0; --i) {\n            let st = before[i];\n            switch (st.type) {\n                case 'space':\n                case 'comment':\n                case 'newline':\n                    offset -= st.source.length;\n                    continue;\n            }\n            // Technically, an empty scalar is immediately after the last non-empty\n            // node, but it's more useful to place it after any whitespace.\n            st = before[++i];\n            while (st?.type === 'space') {\n                offset += st.source.length;\n                st = before[++i];\n            }\n            break;\n        }\n    }\n    return offset;\n}\n\nexports.emptyScalarPosition = emptyScalarPosition;\n","'use strict';\n\nvar utilContainsNewline = require('./util-contains-newline.js');\n\nfunction flowIndentCheck(indent, fc, onError) {\n    if (fc?.type === 'flow-collection') {\n        const end = fc.end[0];\n        if (end.indent === indent &&\n            (end.source === ']' || end.source === '}') &&\n            utilContainsNewline.containsNewline(fc)) {\n            const msg = 'Flow end indicator should be more indented than parent';\n            onError(end, 'BAD_INDENT', msg, true);\n        }\n    }\n}\n\nexports.flowIndentCheck = flowIndentCheck;\n","'use strict';\n\nvar Node = require('../nodes/Node.js');\n\nfunction mapIncludes(ctx, items, search) {\n    const { uniqueKeys } = ctx.options;\n    if (uniqueKeys === false)\n        return false;\n    const isEqual = typeof uniqueKeys === 'function'\n        ? uniqueKeys\n        : (a, b) => a === b ||\n            (Node.isScalar(a) &&\n                Node.isScalar(b) &&\n                a.value === b.value &&\n                !(a.value === '<<' && ctx.schema.merge));\n    return items.some(pair => isEqual(pair.key, search));\n}\n\nexports.mapIncludes = mapIncludes;\n","'use strict';\n\nvar Alias = require('../nodes/Alias.js');\nvar Collection = require('../nodes/Collection.js');\nvar Node = require('../nodes/Node.js');\nvar Pair = require('../nodes/Pair.js');\nvar toJS = require('../nodes/toJS.js');\nvar Schema = require('../schema/Schema.js');\nvar stringify = require('../stringify/stringify.js');\nvar stringifyDocument = require('../stringify/stringifyDocument.js');\nvar anchors = require('./anchors.js');\nvar applyReviver = require('./applyReviver.js');\nvar createNode = require('./createNode.js');\nvar directives = require('./directives.js');\n\nclass Document {\n    constructor(value, replacer, options) {\n        /** A comment before this Document */\n        this.commentBefore = null;\n        /** A comment immediately after this Document */\n        this.comment = null;\n        /** Errors encountered during parsing. */\n        this.errors = [];\n        /** Warnings encountered during parsing. */\n        this.warnings = [];\n        Object.defineProperty(this, Node.NODE_TYPE, { value: Node.DOC });\n        let _replacer = null;\n        if (typeof replacer === 'function' || Array.isArray(replacer)) {\n            _replacer = replacer;\n        }\n        else if (options === undefined && replacer) {\n            options = replacer;\n            replacer = undefined;\n        }\n        const opt = Object.assign({\n            intAsBigInt: false,\n            keepSourceTokens: false,\n            logLevel: 'warn',\n            prettyErrors: true,\n            strict: true,\n            uniqueKeys: true,\n            version: '1.2'\n        }, options);\n        this.options = opt;\n        let { version } = opt;\n        if (options?._directives) {\n            this.directives = options._directives.atDocument();\n            if (this.directives.yaml.explicit)\n                version = this.directives.yaml.version;\n        }\n        else\n            this.directives = new directives.Directives({ version });\n        this.setSchema(version, options);\n        if (value === undefined)\n            this.contents = null;\n        else {\n            this.contents = this.createNode(value, _replacer, options);\n        }\n    }\n    /**\n     * Create a deep copy of this Document and its contents.\n     *\n     * Custom Node values that inherit from `Object` still refer to their original instances.\n     */\n    clone() {\n        const copy = Object.create(Document.prototype, {\n            [Node.NODE_TYPE]: { value: Node.DOC }\n        });\n        copy.commentBefore = this.commentBefore;\n        copy.comment = this.comment;\n        copy.errors = this.errors.slice();\n        copy.warnings = this.warnings.slice();\n        copy.options = Object.assign({}, this.options);\n        if (this.directives)\n            copy.directives = this.directives.clone();\n        copy.schema = this.schema.clone();\n        copy.contents = Node.isNode(this.contents)\n            ? this.contents.clone(copy.schema)\n            : this.contents;\n        if (this.range)\n            copy.range = this.range.slice();\n        return copy;\n    }\n    /** Adds a value to the document. */\n    add(value) {\n        if (assertCollection(this.contents))\n            this.contents.add(value);\n    }\n    /** Adds a value to the document. */\n    addIn(path, value) {\n        if (assertCollection(this.contents))\n            this.contents.addIn(path, value);\n    }\n    /**\n     * Create a new `Alias` node, ensuring that the target `node` has the required anchor.\n     *\n     * If `node` already has an anchor, `name` is ignored.\n     * Otherwise, the `node.anchor` value will be set to `name`,\n     * or if an anchor with that name is already present in the document,\n     * `name` will be used as a prefix for a new unique anchor.\n     * If `name` is undefined, the generated anchor will use 'a' as a prefix.\n     */\n    createAlias(node, name) {\n        if (!node.anchor) {\n            const prev = anchors.anchorNames(this);\n            node.anchor =\n                // eslint-disable-next-line @typescript-eslint/prefer-nullish-coalescing\n                !name || prev.has(name) ? anchors.findNewAnchor(name || 'a', prev) : name;\n        }\n        return new Alias.Alias(node.anchor);\n    }\n    createNode(value, replacer, options) {\n        let _replacer = undefined;\n        if (typeof replacer === 'function') {\n            value = replacer.call({ '': value }, '', value);\n            _replacer = replacer;\n        }\n        else if (Array.isArray(replacer)) {\n            const keyToStr = (v) => typeof v === 'number' || v instanceof String || v instanceof Number;\n            const asStr = replacer.filter(keyToStr).map(String);\n            if (asStr.length > 0)\n                replacer = replacer.concat(asStr);\n            _replacer = replacer;\n        }\n        else if (options === undefined && replacer) {\n            options = replacer;\n            replacer = undefined;\n        }\n        const { aliasDuplicateObjects, anchorPrefix, flow, keepUndefined, onTagObj, tag } = options ?? {};\n        const { onAnchor, setAnchors, sourceObjects } = anchors.createNodeAnchors(this, \n        // eslint-disable-next-line @typescript-eslint/prefer-nullish-coalescing\n        anchorPrefix || 'a');\n        const ctx = {\n            aliasDuplicateObjects: aliasDuplicateObjects ?? true,\n            keepUndefined: keepUndefined ?? false,\n            onAnchor,\n            onTagObj,\n            replacer: _replacer,\n            schema: this.schema,\n            sourceObjects\n        };\n        const node = createNode.createNode(value, tag, ctx);\n        if (flow && Node.isCollection(node))\n            node.flow = true;\n        setAnchors();\n        return node;\n    }\n    /**\n     * Convert a key and a value into a `Pair` using the current schema,\n     * recursively wrapping all values as `Scalar` or `Collection` nodes.\n     */\n    createPair(key, value, options = {}) {\n        const k = this.createNode(key, null, options);\n        const v = this.createNode(value, null, options);\n        return new Pair.Pair(k, v);\n    }\n    /**\n     * Removes a value from the document.\n     * @returns `true` if the item was found and removed.\n     */\n    delete(key) {\n        return assertCollection(this.contents) ? this.contents.delete(key) : false;\n    }\n    /**\n     * Removes a value from the document.\n     * @returns `true` if the item was found and removed.\n     */\n    deleteIn(path) {\n        if (Collection.isEmptyPath(path)) {\n            if (this.contents == null)\n                return false;\n            this.contents = null;\n            return true;\n        }\n        return assertCollection(this.contents)\n            ? this.contents.deleteIn(path)\n            : false;\n    }\n    /**\n     * Returns item at `key`, or `undefined` if not found. By default unwraps\n     * scalar values from their surrounding node; to disable set `keepScalar` to\n     * `true` (collections are always returned intact).\n     */\n    get(key, keepScalar) {\n        return Node.isCollection(this.contents)\n            ? this.contents.get(key, keepScalar)\n            : undefined;\n    }\n    /**\n     * Returns item at `path`, or `undefined` if not found. By default unwraps\n     * scalar values from their surrounding node; to disable set `keepScalar` to\n     * `true` (collections are always returned intact).\n     */\n    getIn(path, keepScalar) {\n        if (Collection.isEmptyPath(path))\n            return !keepScalar && Node.isScalar(this.contents)\n                ? this.contents.value\n                : this.contents;\n        return Node.isCollection(this.contents)\n            ? this.contents.getIn(path, keepScalar)\n            : undefined;\n    }\n    /**\n     * Checks if the document includes a value with the key `key`.\n     */\n    has(key) {\n        return Node.isCollection(this.contents) ? this.contents.has(key) : false;\n    }\n    /**\n     * Checks if the document includes a value at `path`.\n     */\n    hasIn(path) {\n        if (Collection.isEmptyPath(path))\n            return this.contents !== undefined;\n        return Node.isCollection(this.contents) ? this.contents.hasIn(path) : false;\n    }\n    /**\n     * Sets a value in this document. For `!!set`, `value` needs to be a\n     * boolean to add/remove the item from the set.\n     */\n    set(key, value) {\n        if (this.contents == null) {\n            this.contents = Collection.collectionFromPath(this.schema, [key], value);\n        }\n        else if (assertCollection(this.contents)) {\n            this.contents.set(key, value);\n        }\n    }\n    /**\n     * Sets a value in this document. For `!!set`, `value` needs to be a\n     * boolean to add/remove the item from the set.\n     */\n    setIn(path, value) {\n        if (Collection.isEmptyPath(path))\n            this.contents = value;\n        else if (this.contents == null) {\n            this.contents = Collection.collectionFromPath(this.schema, Array.from(path), value);\n        }\n        else if (assertCollection(this.contents)) {\n            this.contents.setIn(path, value);\n        }\n    }\n    /**\n     * Change the YAML version and schema used by the document.\n     * A `null` version disables support for directives, explicit tags, anchors, and aliases.\n     * It also requires the `schema` option to be given as a `Schema` instance value.\n     *\n     * Overrides all previously set schema options.\n     */\n    setSchema(version, options = {}) {\n        if (typeof version === 'number')\n            version = String(version);\n        let opt;\n        switch (version) {\n            case '1.1':\n                if (this.directives)\n                    this.directives.yaml.version = '1.1';\n                else\n                    this.directives = new directives.Directives({ version: '1.1' });\n                opt = { merge: true, resolveKnownTags: false, schema: 'yaml-1.1' };\n                break;\n            case '1.2':\n            case 'next':\n                if (this.directives)\n                    this.directives.yaml.version = version;\n                else\n                    this.directives = new directives.Directives({ version });\n                opt = { merge: false, resolveKnownTags: true, schema: 'core' };\n                break;\n            case null:\n                if (this.directives)\n                    delete this.directives;\n                opt = null;\n                break;\n            default: {\n                const sv = JSON.stringify(version);\n                throw new Error(`Expected '1.1', '1.2' or null as first argument, but found: ${sv}`);\n            }\n        }\n        // Not using `instanceof Schema` to allow for duck typing\n        if (options.schema instanceof Object)\n            this.schema = options.schema;\n        else if (opt)\n            this.schema = new Schema.Schema(Object.assign(opt, options));\n        else\n            throw new Error(`With a null YAML version, the { schema: Schema } option is required`);\n    }\n    // json & jsonArg are only used from toJSON()\n    toJS({ json, jsonArg, mapAsMap, maxAliasCount, onAnchor, reviver } = {}) {\n        const ctx = {\n            anchors: new Map(),\n            doc: this,\n            keep: !json,\n            mapAsMap: mapAsMap === true,\n            mapKeyWarned: false,\n            maxAliasCount: typeof maxAliasCount === 'number' ? maxAliasCount : 100,\n            stringify: stringify.stringify\n        };\n        const res = toJS.toJS(this.contents, jsonArg ?? '', ctx);\n        if (typeof onAnchor === 'function')\n            for (const { count, res } of ctx.anchors.values())\n                onAnchor(res, count);\n        return typeof reviver === 'function'\n            ? applyReviver.applyReviver(reviver, { '': res }, '', res)\n            : res;\n    }\n    /**\n     * A JSON representation of the document `contents`.\n     *\n     * @param jsonArg Used by `JSON.stringify` to indicate the array index or\n     *   property name.\n     */\n    toJSON(jsonArg, onAnchor) {\n        return this.toJS({ json: true, jsonArg, mapAsMap: false, onAnchor });\n    }\n    /** A YAML representation of the document. */\n    toString(options = {}) {\n        if (this.errors.length > 0)\n            throw new Error('Document with errors cannot be stringified');\n        if ('indent' in options &&\n            (!Number.isInteger(options.indent) || Number(options.indent) <= 0)) {\n            const s = JSON.stringify(options.indent);\n            throw new Error(`\"indent\" option must be a positive integer, not ${s}`);\n        }\n        return stringifyDocument.stringifyDocument(this, options);\n    }\n}\nfunction assertCollection(contents) {\n    if (Node.isCollection(contents))\n        return true;\n    throw new Error('Expected a YAML collection as document contents');\n}\n\nexports.Document = Document;\n","'use strict';\n\nvar Node = require('../nodes/Node.js');\nvar visit = require('../visit.js');\n\n/**\n * Verify that the input string is a valid anchor.\n *\n * Will throw on errors.\n */\nfunction anchorIsValid(anchor) {\n    if (/[\\x00-\\x19\\s,[\\]{}]/.test(anchor)) {\n        const sa = JSON.stringify(anchor);\n        const msg = `Anchor must not contain whitespace or control characters: ${sa}`;\n        throw new Error(msg);\n    }\n    return true;\n}\nfunction anchorNames(root) {\n    const anchors = new Set();\n    visit.visit(root, {\n        Value(_key, node) {\n            if (node.anchor)\n                anchors.add(node.anchor);\n        }\n    });\n    return anchors;\n}\n/** Find a new anchor name with the given `prefix` and a one-indexed suffix. */\nfunction findNewAnchor(prefix, exclude) {\n    for (let i = 1; true; ++i) {\n        const name = `${prefix}${i}`;\n        if (!exclude.has(name))\n            return name;\n    }\n}\nfunction createNodeAnchors(doc, prefix) {\n    const aliasObjects = [];\n    const sourceObjects = new Map();\n    let prevAnchors = null;\n    return {\n        onAnchor: (source) => {\n            aliasObjects.push(source);\n            if (!prevAnchors)\n                prevAnchors = anchorNames(doc);\n            const anchor = findNewAnchor(prefix, prevAnchors);\n            prevAnchors.add(anchor);\n            return anchor;\n        },\n        /**\n         * With circular references, the source node is only resolved after all\n         * of its child nodes are. This is why anchors are set only after all of\n         * the nodes have been created.\n         */\n        setAnchors: () => {\n            for (const source of aliasObjects) {\n                const ref = sourceObjects.get(source);\n                if (typeof ref === 'object' &&\n                    ref.anchor &&\n                    (Node.isScalar(ref.node) || Node.isCollection(ref.node))) {\n                    ref.node.anchor = ref.anchor;\n                }\n                else {\n                    const error = new Error('Failed to resolve repeated object (this should not happen)');\n                    error.source = source;\n                    throw error;\n                }\n            }\n        },\n        sourceObjects\n    };\n}\n\nexports.anchorIsValid = anchorIsValid;\nexports.anchorNames = anchorNames;\nexports.createNodeAnchors = createNodeAnchors;\nexports.findNewAnchor = findNewAnchor;\n","'use strict';\n\n/**\n * Applies the JSON.parse reviver algorithm as defined in the ECMA-262 spec,\n * in section 24.5.1.1 \"Runtime Semantics: InternalizeJSONProperty\" of the\n * 2021 edition: https://tc39.es/ecma262/#sec-json.parse\n *\n * Includes extensions for handling Map and Set objects.\n */\nfunction applyReviver(reviver, obj, key, val) {\n    if (val && typeof val === 'object') {\n        if (Array.isArray(val)) {\n            for (let i = 0, len = val.length; i < len; ++i) {\n                const v0 = val[i];\n                const v1 = applyReviver(reviver, val, String(i), v0);\n                if (v1 === undefined)\n                    delete val[i];\n                else if (v1 !== v0)\n                    val[i] = v1;\n            }\n        }\n        else if (val instanceof Map) {\n            for (const k of Array.from(val.keys())) {\n                const v0 = val.get(k);\n                const v1 = applyReviver(reviver, val, k, v0);\n                if (v1 === undefined)\n                    val.delete(k);\n                else if (v1 !== v0)\n                    val.set(k, v1);\n            }\n        }\n        else if (val instanceof Set) {\n            for (const v0 of Array.from(val)) {\n                const v1 = applyReviver(reviver, val, v0, v0);\n                if (v1 === undefined)\n                    val.delete(v0);\n                else if (v1 !== v0) {\n                    val.delete(v0);\n                    val.add(v1);\n                }\n            }\n        }\n        else {\n            for (const [k, v0] of Object.entries(val)) {\n                const v1 = applyReviver(reviver, val, k, v0);\n                if (v1 === undefined)\n                    delete val[k];\n                else if (v1 !== v0)\n                    val[k] = v1;\n            }\n        }\n    }\n    return reviver.call(obj, key, val);\n}\n\nexports.applyReviver = applyReviver;\n","'use strict';\n\nvar Alias = require('../nodes/Alias.js');\nvar Node = require('../nodes/Node.js');\nvar Scalar = require('../nodes/Scalar.js');\n\nconst defaultTagPrefix = 'tag:yaml.org,2002:';\nfunction findTagObject(value, tagName, tags) {\n    if (tagName) {\n        const match = tags.filter(t => t.tag === tagName);\n        const tagObj = match.find(t => !t.format) ?? match[0];\n        if (!tagObj)\n            throw new Error(`Tag ${tagName} not found`);\n        return tagObj;\n    }\n    return tags.find(t => t.identify?.(value) && !t.format);\n}\nfunction createNode(value, tagName, ctx) {\n    if (Node.isDocument(value))\n        value = value.contents;\n    if (Node.isNode(value))\n        return value;\n    if (Node.isPair(value)) {\n        const map = ctx.schema[Node.MAP].createNode?.(ctx.schema, null, ctx);\n        map.items.push(value);\n        return map;\n    }\n    if (value instanceof String ||\n        value instanceof Number ||\n        value instanceof Boolean ||\n        (typeof BigInt !== 'undefined' && value instanceof BigInt) // not supported everywhere\n    ) {\n        // https://tc39.es/ecma262/#sec-serializejsonproperty\n        value = value.valueOf();\n    }\n    const { aliasDuplicateObjects, onAnchor, onTagObj, schema, sourceObjects } = ctx;\n    // Detect duplicate references to the same object & use Alias nodes for all\n    // after first. The `ref` wrapper allows for circular references to resolve.\n    let ref = undefined;\n    if (aliasDuplicateObjects && value && typeof value === 'object') {\n        ref = sourceObjects.get(value);\n        if (ref) {\n            if (!ref.anchor)\n                ref.anchor = onAnchor(value);\n            return new Alias.Alias(ref.anchor);\n        }\n        else {\n            ref = { anchor: null, node: null };\n            sourceObjects.set(value, ref);\n        }\n    }\n    if (tagName?.startsWith('!!'))\n        tagName = defaultTagPrefix + tagName.slice(2);\n    let tagObj = findTagObject(value, tagName, schema.tags);\n    if (!tagObj) {\n        if (value && typeof value.toJSON === 'function') {\n            // eslint-disable-next-line @typescript-eslint/no-unsafe-call\n            value = value.toJSON();\n        }\n        if (!value || typeof value !== 'object') {\n            const node = new Scalar.Scalar(value);\n            if (ref)\n                ref.node = node;\n            return node;\n        }\n        tagObj =\n            value instanceof Map\n                ? schema[Node.MAP]\n                : Symbol.iterator in Object(value)\n                    ? schema[Node.SEQ]\n                    : schema[Node.MAP];\n    }\n    if (onTagObj) {\n        onTagObj(tagObj);\n        delete ctx.onTagObj;\n    }\n    const node = tagObj?.createNode\n        ? tagObj.createNode(ctx.schema, value, ctx)\n        : new Scalar.Scalar(value);\n    if (tagName)\n        node.tag = tagName;\n    if (ref)\n        ref.node = node;\n    return node;\n}\n\nexports.createNode = createNode;\n","'use strict';\n\nvar Node = require('../nodes/Node.js');\nvar visit = require('../visit.js');\n\nconst escapeChars = {\n    '!': '%21',\n    ',': '%2C',\n    '[': '%5B',\n    ']': '%5D',\n    '{': '%7B',\n    '}': '%7D'\n};\nconst escapeTagName = (tn) => tn.replace(/[!,[\\]{}]/g, ch => escapeChars[ch]);\nclass Directives {\n    constructor(yaml, tags) {\n        /**\n         * The directives-end/doc-start marker `---`. If `null`, a marker may still be\n         * included in the document's stringified representation.\n         */\n        this.docStart = null;\n        /** The doc-end marker `...`.  */\n        this.docEnd = false;\n        this.yaml = Object.assign({}, Directives.defaultYaml, yaml);\n        this.tags = Object.assign({}, Directives.defaultTags, tags);\n    }\n    clone() {\n        const copy = new Directives(this.yaml, this.tags);\n        copy.docStart = this.docStart;\n        return copy;\n    }\n    /**\n     * During parsing, get a Directives instance for the current document and\n     * update the stream state according to the current version's spec.\n     */\n    atDocument() {\n        const res = new Directives(this.yaml, this.tags);\n        switch (this.yaml.version) {\n            case '1.1':\n                this.atNextDocument = true;\n                break;\n            case '1.2':\n                this.atNextDocument = false;\n                this.yaml = {\n                    explicit: Directives.defaultYaml.explicit,\n                    version: '1.2'\n                };\n                this.tags = Object.assign({}, Directives.defaultTags);\n                break;\n        }\n        return res;\n    }\n    /**\n     * @param onError - May be called even if the action was successful\n     * @returns `true` on success\n     */\n    add(line, onError) {\n        if (this.atNextDocument) {\n            this.yaml = { explicit: Directives.defaultYaml.explicit, version: '1.1' };\n            this.tags = Object.assign({}, Directives.defaultTags);\n            this.atNextDocument = false;\n        }\n        const parts = line.trim().split(/[ \\t]+/);\n        const name = parts.shift();\n        switch (name) {\n            case '%TAG': {\n                if (parts.length !== 2) {\n                    onError(0, '%TAG directive should contain exactly two parts');\n                    if (parts.length < 2)\n                        return false;\n                }\n                const [handle, prefix] = parts;\n                this.tags[handle] = prefix;\n                return true;\n            }\n            case '%YAML': {\n                this.yaml.explicit = true;\n                if (parts.length !== 1) {\n                    onError(0, '%YAML directive should contain exactly one part');\n                    return false;\n                }\n                const [version] = parts;\n                if (version === '1.1' || version === '1.2') {\n                    this.yaml.version = version;\n                    return true;\n                }\n                else {\n                    const isValid = /^\\d+\\.\\d+$/.test(version);\n                    onError(6, `Unsupported YAML version ${version}`, isValid);\n                    return false;\n                }\n            }\n            default:\n                onError(0, `Unknown directive ${name}`, true);\n                return false;\n        }\n    }\n    /**\n     * Resolves a tag, matching handles to those defined in %TAG directives.\n     *\n     * @returns Resolved tag, which may also be the non-specific tag `'!'` or a\n     *   `'!local'` tag, or `null` if unresolvable.\n     */\n    tagName(source, onError) {\n        if (source === '!')\n            return '!'; // non-specific tag\n        if (source[0] !== '!') {\n            onError(`Not a valid tag: ${source}`);\n            return null;\n        }\n        if (source[1] === '<') {\n            const verbatim = source.slice(2, -1);\n            if (verbatim === '!' || verbatim === '!!') {\n                onError(`Verbatim tags aren't resolved, so ${source} is invalid.`);\n                return null;\n            }\n            if (source[source.length - 1] !== '>')\n                onError('Verbatim tags must end with a >');\n            return verbatim;\n        }\n        const [, handle, suffix] = source.match(/^(.*!)([^!]*)$/);\n        if (!suffix)\n            onError(`The ${source} tag has no suffix`);\n        const prefix = this.tags[handle];\n        if (prefix)\n            return prefix + decodeURIComponent(suffix);\n        if (handle === '!')\n            return source; // local tag\n        onError(`Could not resolve tag: ${source}`);\n        return null;\n    }\n    /**\n     * Given a fully resolved tag, returns its printable string form,\n     * taking into account current tag prefixes and defaults.\n     */\n    tagString(tag) {\n        for (const [handle, prefix] of Object.entries(this.tags)) {\n            if (tag.startsWith(prefix))\n                return handle + escapeTagName(tag.substring(prefix.length));\n        }\n        return tag[0] === '!' ? tag : `!<${tag}>`;\n    }\n    toString(doc) {\n        const lines = this.yaml.explicit\n            ? [`%YAML ${this.yaml.version || '1.2'}`]\n            : [];\n        const tagEntries = Object.entries(this.tags);\n        let tagNames;\n        if (doc && tagEntries.length > 0 && Node.isNode(doc.contents)) {\n            const tags = {};\n            visit.visit(doc.contents, (_key, node) => {\n                if (Node.isNode(node) && node.tag)\n                    tags[node.tag] = true;\n            });\n            tagNames = Object.keys(tags);\n        }\n        else\n            tagNames = [];\n        for (const [handle, prefix] of tagEntries) {\n            if (handle === '!!' && prefix === 'tag:yaml.org,2002:')\n                continue;\n            if (!doc || tagNames.some(tn => tn.startsWith(prefix)))\n                lines.push(`%TAG ${handle} ${prefix}`);\n        }\n        return lines.join('\\n');\n    }\n}\nDirectives.defaultYaml = { explicit: false, version: '1.2' };\nDirectives.defaultTags = { '!!': 'tag:yaml.org,2002:' };\n\nexports.Directives = Directives;\n","'use strict';\n\nclass YAMLError extends Error {\n    constructor(name, pos, code, message) {\n        super();\n        this.name = name;\n        this.code = code;\n        this.message = message;\n        this.pos = pos;\n    }\n}\nclass YAMLParseError extends YAMLError {\n    constructor(pos, code, message) {\n        super('YAMLParseError', pos, code, message);\n    }\n}\nclass YAMLWarning extends YAMLError {\n    constructor(pos, code, message) {\n        super('YAMLWarning', pos, code, message);\n    }\n}\nconst prettifyError = (src, lc) => (error) => {\n    if (error.pos[0] === -1)\n        return;\n    error.linePos = error.pos.map(pos => lc.linePos(pos));\n    const { line, col } = error.linePos[0];\n    error.message += ` at line ${line}, column ${col}`;\n    let ci = col - 1;\n    let lineStr = src\n        .substring(lc.lineStarts[line - 1], lc.lineStarts[line])\n        .replace(/[\\n\\r]+$/, '');\n    // Trim to max 80 chars, keeping col position near the middle\n    if (ci >= 60 && lineStr.length > 80) {\n        const trimStart = Math.min(ci - 39, lineStr.length - 79);\n        lineStr = '…' + lineStr.substring(trimStart);\n        ci -= trimStart - 1;\n    }\n    if (lineStr.length > 80)\n        lineStr = lineStr.substring(0, 79) + '…';\n    // Include previous line in context if pointing at line start\n    if (line > 1 && /^ *$/.test(lineStr.substring(0, ci))) {\n        // Regexp won't match if start is trimmed\n        let prev = src.substring(lc.lineStarts[line - 2], lc.lineStarts[line - 1]);\n        if (prev.length > 80)\n            prev = prev.substring(0, 79) + '…\\n';\n        lineStr = prev + lineStr;\n    }\n    if (/[^ ]/.test(lineStr)) {\n        let count = 1;\n        const end = error.linePos[1];\n        if (end && end.line === line && end.col > col) {\n            count = Math.min(end.col - col, 80 - ci);\n        }\n        const pointer = ' '.repeat(ci) + '^'.repeat(count);\n        error.message += `:\\n\\n${lineStr}\\n${pointer}\\n`;\n    }\n};\n\nexports.YAMLError = YAMLError;\nexports.YAMLParseError = YAMLParseError;\nexports.YAMLWarning = YAMLWarning;\nexports.prettifyError = prettifyError;\n","'use strict';\n\nvar composer = require('./compose/composer.js');\nvar Document = require('./doc/Document.js');\nvar Schema = require('./schema/Schema.js');\nvar errors = require('./errors.js');\nvar Alias = require('./nodes/Alias.js');\nvar Node = require('./nodes/Node.js');\nvar Pair = require('./nodes/Pair.js');\nvar Scalar = require('./nodes/Scalar.js');\nvar YAMLMap = require('./nodes/YAMLMap.js');\nvar YAMLSeq = require('./nodes/YAMLSeq.js');\nvar cst = require('./parse/cst.js');\nvar lexer = require('./parse/lexer.js');\nvar lineCounter = require('./parse/line-counter.js');\nvar parser = require('./parse/parser.js');\nvar publicApi = require('./public-api.js');\nvar visit = require('./visit.js');\n\n\n\nexports.Composer = composer.Composer;\nexports.Document = Document.Document;\nexports.Schema = Schema.Schema;\nexports.YAMLError = errors.YAMLError;\nexports.YAMLParseError = errors.YAMLParseError;\nexports.YAMLWarning = errors.YAMLWarning;\nexports.Alias = Alias.Alias;\nexports.isAlias = Node.isAlias;\nexports.isCollection = Node.isCollection;\nexports.isDocument = Node.isDocument;\nexports.isMap = Node.isMap;\nexports.isNode = Node.isNode;\nexports.isPair = Node.isPair;\nexports.isScalar = Node.isScalar;\nexports.isSeq = Node.isSeq;\nexports.Pair = Pair.Pair;\nexports.Scalar = Scalar.Scalar;\nexports.YAMLMap = YAMLMap.YAMLMap;\nexports.YAMLSeq = YAMLSeq.YAMLSeq;\nexports.CST = cst;\nexports.Lexer = lexer.Lexer;\nexports.LineCounter = lineCounter.LineCounter;\nexports.Parser = parser.Parser;\nexports.parse = publicApi.parse;\nexports.parseAllDocuments = publicApi.parseAllDocuments;\nexports.parseDocument = publicApi.parseDocument;\nexports.stringify = publicApi.stringify;\nexports.visit = visit.visit;\nexports.visitAsync = visit.visitAsync;\n","'use strict';\n\nfunction debug(logLevel, ...messages) {\n    if (logLevel === 'debug')\n        console.log(...messages);\n}\nfunction warn(logLevel, warning) {\n    if (logLevel === 'debug' || logLevel === 'warn') {\n        if (typeof process !== 'undefined' && process.emitWarning)\n            process.emitWarning(warning);\n        else\n            console.warn(warning);\n    }\n}\n\nexports.debug = debug;\nexports.warn = warn;\n","'use strict';\n\nvar anchors = require('../doc/anchors.js');\nvar visit = require('../visit.js');\nvar Node = require('./Node.js');\n\nclass Alias extends Node.NodeBase {\n    constructor(source) {\n        super(Node.ALIAS);\n        this.source = source;\n        Object.defineProperty(this, 'tag', {\n            set() {\n                throw new Error('Alias nodes cannot have tags');\n            }\n        });\n    }\n    /**\n     * Resolve the value of this alias within `doc`, finding the last\n     * instance of the `source` anchor before this node.\n     */\n    resolve(doc) {\n        let found = undefined;\n        visit.visit(doc, {\n            Node: (_key, node) => {\n                if (node === this)\n                    return visit.visit.BREAK;\n                if (node.anchor === this.source)\n                    found = node;\n            }\n        });\n        return found;\n    }\n    toJSON(_arg, ctx) {\n        if (!ctx)\n            return { source: this.source };\n        const { anchors, doc, maxAliasCount } = ctx;\n        const source = this.resolve(doc);\n        if (!source) {\n            const msg = `Unresolved alias (the anchor must be set before the alias): ${this.source}`;\n            throw new ReferenceError(msg);\n        }\n        const data = anchors.get(source);\n        /* istanbul ignore if */\n        if (!data || data.res === undefined) {\n            const msg = 'This should not happen: Alias anchor was not resolved?';\n            throw new ReferenceError(msg);\n        }\n        if (maxAliasCount >= 0) {\n            data.count += 1;\n            if (data.aliasCount === 0)\n                data.aliasCount = getAliasCount(doc, source, anchors);\n            if (data.count * data.aliasCount > maxAliasCount) {\n                const msg = 'Excessive alias count indicates a resource exhaustion attack';\n                throw new ReferenceError(msg);\n            }\n        }\n        return data.res;\n    }\n    toString(ctx, _onComment, _onChompKeep) {\n        const src = `*${this.source}`;\n        if (ctx) {\n            anchors.anchorIsValid(this.source);\n            if (ctx.options.verifyAliasOrder && !ctx.anchors.has(this.source)) {\n                const msg = `Unresolved alias (the anchor must be set before the alias): ${this.source}`;\n                throw new Error(msg);\n            }\n            if (ctx.implicitKey)\n                return `${src} `;\n        }\n        return src;\n    }\n}\nfunction getAliasCount(doc, node, anchors) {\n    if (Node.isAlias(node)) {\n        const source = node.resolve(doc);\n        const anchor = anchors && source && anchors.get(source);\n        return anchor ? anchor.count * anchor.aliasCount : 0;\n    }\n    else if (Node.isCollection(node)) {\n        let count = 0;\n        for (const item of node.items) {\n            const c = getAliasCount(doc, item, anchors);\n            if (c > count)\n                count = c;\n        }\n        return count;\n    }\n    else if (Node.isPair(node)) {\n        const kc = getAliasCount(doc, node.key, anchors);\n        const vc = getAliasCount(doc, node.value, anchors);\n        return Math.max(kc, vc);\n    }\n    return 1;\n}\n\nexports.Alias = Alias;\n","'use strict';\n\nvar createNode = require('../doc/createNode.js');\nvar Node = require('./Node.js');\n\nfunction collectionFromPath(schema, path, value) {\n    let v = value;\n    for (let i = path.length - 1; i >= 0; --i) {\n        const k = path[i];\n        if (typeof k === 'number' && Number.isInteger(k) && k >= 0) {\n            const a = [];\n            a[k] = v;\n            v = a;\n        }\n        else {\n            v = new Map([[k, v]]);\n        }\n    }\n    return createNode.createNode(v, undefined, {\n        aliasDuplicateObjects: false,\n        keepUndefined: false,\n        onAnchor: () => {\n            throw new Error('This should not happen, please report a bug.');\n        },\n        schema,\n        sourceObjects: new Map()\n    });\n}\n// Type guard is intentionally a little wrong so as to be more useful,\n// as it does not cover untypable empty non-string iterables (e.g. []).\nconst isEmptyPath = (path) => path == null ||\n    (typeof path === 'object' && !!path[Symbol.iterator]().next().done);\nclass Collection extends Node.NodeBase {\n    constructor(type, schema) {\n        super(type);\n        Object.defineProperty(this, 'schema', {\n            value: schema,\n            configurable: true,\n            enumerable: false,\n            writable: true\n        });\n    }\n    /**\n     * Create a copy of this collection.\n     *\n     * @param schema - If defined, overwrites the original's schema\n     */\n    clone(schema) {\n        const copy = Object.create(Object.getPrototypeOf(this), Object.getOwnPropertyDescriptors(this));\n        if (schema)\n            copy.schema = schema;\n        copy.items = copy.items.map(it => Node.isNode(it) || Node.isPair(it) ? it.clone(schema) : it);\n        if (this.range)\n            copy.range = this.range.slice();\n        return copy;\n    }\n    /**\n     * Adds a value to the collection. For `!!map` and `!!omap` the value must\n     * be a Pair instance or a `{ key, value }` object, which may not have a key\n     * that already exists in the map.\n     */\n    addIn(path, value) {\n        if (isEmptyPath(path))\n            this.add(value);\n        else {\n            const [key, ...rest] = path;\n            const node = this.get(key, true);\n            if (Node.isCollection(node))\n                node.addIn(rest, value);\n            else if (node === undefined && this.schema)\n                this.set(key, collectionFromPath(this.schema, rest, value));\n            else\n                throw new Error(`Expected YAML collection at ${key}. Remaining path: ${rest}`);\n        }\n    }\n    /**\n     * Removes a value from the collection.\n     * @returns `true` if the item was found and removed.\n     */\n    deleteIn(path) {\n        const [key, ...rest] = path;\n        if (rest.length === 0)\n            return this.delete(key);\n        const node = this.get(key, true);\n        if (Node.isCollection(node))\n            return node.deleteIn(rest);\n        else\n            throw new Error(`Expected YAML collection at ${key}. Remaining path: ${rest}`);\n    }\n    /**\n     * Returns item at `key`, or `undefined` if not found. By default unwraps\n     * scalar values from their surrounding node; to disable set `keepScalar` to\n     * `true` (collections are always returned intact).\n     */\n    getIn(path, keepScalar) {\n        const [key, ...rest] = path;\n        const node = this.get(key, true);\n        if (rest.length === 0)\n            return !keepScalar && Node.isScalar(node) ? node.value : node;\n        else\n            return Node.isCollection(node) ? node.getIn(rest, keepScalar) : undefined;\n    }\n    hasAllNullValues(allowScalar) {\n        return this.items.every(node => {\n            if (!Node.isPair(node))\n                return false;\n            const n = node.value;\n            return (n == null ||\n                (allowScalar &&\n                    Node.isScalar(n) &&\n                    n.value == null &&\n                    !n.commentBefore &&\n                    !n.comment &&\n                    !n.tag));\n        });\n    }\n    /**\n     * Checks if the collection includes a value with the key `key`.\n     */\n    hasIn(path) {\n        const [key, ...rest] = path;\n        if (rest.length === 0)\n            return this.has(key);\n        const node = this.get(key, true);\n        return Node.isCollection(node) ? node.hasIn(rest) : false;\n    }\n    /**\n     * Sets a value in this collection. For `!!set`, `value` needs to be a\n     * boolean to add/remove the item from the set.\n     */\n    setIn(path, value) {\n        const [key, ...rest] = path;\n        if (rest.length === 0) {\n            this.set(key, value);\n        }\n        else {\n            const node = this.get(key, true);\n            if (Node.isCollection(node))\n                node.setIn(rest, value);\n            else if (node === undefined && this.schema)\n                this.set(key, collectionFromPath(this.schema, rest, value));\n            else\n                throw new Error(`Expected YAML collection at ${key}. Remaining path: ${rest}`);\n        }\n    }\n}\nCollection.maxFlowStringSingleLineLength = 60;\n\nexports.Collection = Collection;\nexports.collectionFromPath = collectionFromPath;\nexports.isEmptyPath = isEmptyPath;\n","'use strict';\n\nconst ALIAS = Symbol.for('yaml.alias');\nconst DOC = Symbol.for('yaml.document');\nconst MAP = Symbol.for('yaml.map');\nconst PAIR = Symbol.for('yaml.pair');\nconst SCALAR = Symbol.for('yaml.scalar');\nconst SEQ = Symbol.for('yaml.seq');\nconst NODE_TYPE = Symbol.for('yaml.node.type');\nconst isAlias = (node) => !!node && typeof node === 'object' && node[NODE_TYPE] === ALIAS;\nconst isDocument = (node) => !!node && typeof node === 'object' && node[NODE_TYPE] === DOC;\nconst isMap = (node) => !!node && typeof node === 'object' && node[NODE_TYPE] === MAP;\nconst isPair = (node) => !!node && typeof node === 'object' && node[NODE_TYPE] === PAIR;\nconst isScalar = (node) => !!node && typeof node === 'object' && node[NODE_TYPE] === SCALAR;\nconst isSeq = (node) => !!node && typeof node === 'object' && node[NODE_TYPE] === SEQ;\nfunction isCollection(node) {\n    if (node && typeof node === 'object')\n        switch (node[NODE_TYPE]) {\n            case MAP:\n            case SEQ:\n                return true;\n        }\n    return false;\n}\nfunction isNode(node) {\n    if (node && typeof node === 'object')\n        switch (node[NODE_TYPE]) {\n            case ALIAS:\n            case MAP:\n            case SCALAR:\n            case SEQ:\n                return true;\n        }\n    return false;\n}\nconst hasAnchor = (node) => (isScalar(node) || isCollection(node)) && !!node.anchor;\nclass NodeBase {\n    constructor(type) {\n        Object.defineProperty(this, NODE_TYPE, { value: type });\n    }\n    /** Create a copy of this node.  */\n    clone() {\n        const copy = Object.create(Object.getPrototypeOf(this), Object.getOwnPropertyDescriptors(this));\n        if (this.range)\n            copy.range = this.range.slice();\n        return copy;\n    }\n}\n\nexports.ALIAS = ALIAS;\nexports.DOC = DOC;\nexports.MAP = MAP;\nexports.NODE_TYPE = NODE_TYPE;\nexports.NodeBase = NodeBase;\nexports.PAIR = PAIR;\nexports.SCALAR = SCALAR;\nexports.SEQ = SEQ;\nexports.hasAnchor = hasAnchor;\nexports.isAlias = isAlias;\nexports.isCollection = isCollection;\nexports.isDocument = isDocument;\nexports.isMap = isMap;\nexports.isNode = isNode;\nexports.isPair = isPair;\nexports.isScalar = isScalar;\nexports.isSeq = isSeq;\n","'use strict';\n\nvar createNode = require('../doc/createNode.js');\nvar stringifyPair = require('../stringify/stringifyPair.js');\nvar addPairToJSMap = require('./addPairToJSMap.js');\nvar Node = require('./Node.js');\n\nfunction createPair(key, value, ctx) {\n    const k = createNode.createNode(key, undefined, ctx);\n    const v = createNode.createNode(value, undefined, ctx);\n    return new Pair(k, v);\n}\nclass Pair {\n    constructor(key, value = null) {\n        Object.defineProperty(this, Node.NODE_TYPE, { value: Node.PAIR });\n        this.key = key;\n        this.value = value;\n    }\n    clone(schema) {\n        let { key, value } = this;\n        if (Node.isNode(key))\n            key = key.clone(schema);\n        if (Node.isNode(value))\n            value = value.clone(schema);\n        return new Pair(key, value);\n    }\n    toJSON(_, ctx) {\n        const pair = ctx?.mapAsMap ? new Map() : {};\n        return addPairToJSMap.addPairToJSMap(ctx, pair, this);\n    }\n    toString(ctx, onComment, onChompKeep) {\n        return ctx?.doc\n            ? stringifyPair.stringifyPair(this, ctx, onComment, onChompKeep)\n            : JSON.stringify(this);\n    }\n}\n\nexports.Pair = Pair;\nexports.createPair = createPair;\n","'use strict';\n\nvar Node = require('./Node.js');\nvar toJS = require('./toJS.js');\n\nconst isScalarValue = (value) => !value || (typeof value !== 'function' && typeof value !== 'object');\nclass Scalar extends Node.NodeBase {\n    constructor(value) {\n        super(Node.SCALAR);\n        this.value = value;\n    }\n    toJSON(arg, ctx) {\n        return ctx?.keep ? this.value : toJS.toJS(this.value, arg, ctx);\n    }\n    toString() {\n        return String(this.value);\n    }\n}\nScalar.BLOCK_FOLDED = 'BLOCK_FOLDED';\nScalar.BLOCK_LITERAL = 'BLOCK_LITERAL';\nScalar.PLAIN = 'PLAIN';\nScalar.QUOTE_DOUBLE = 'QUOTE_DOUBLE';\nScalar.QUOTE_SINGLE = 'QUOTE_SINGLE';\n\nexports.Scalar = Scalar;\nexports.isScalarValue = isScalarValue;\n","'use strict';\n\nvar stringifyCollection = require('../stringify/stringifyCollection.js');\nvar addPairToJSMap = require('./addPairToJSMap.js');\nvar Collection = require('./Collection.js');\nvar Node = require('./Node.js');\nvar Pair = require('./Pair.js');\nvar Scalar = require('./Scalar.js');\n\nfunction findPair(items, key) {\n    const k = Node.isScalar(key) ? key.value : key;\n    for (const it of items) {\n        if (Node.isPair(it)) {\n            if (it.key === key || it.key === k)\n                return it;\n            if (Node.isScalar(it.key) && it.key.value === k)\n                return it;\n        }\n    }\n    return undefined;\n}\nclass YAMLMap extends Collection.Collection {\n    constructor(schema) {\n        super(Node.MAP, schema);\n        this.items = [];\n    }\n    static get tagName() {\n        return 'tag:yaml.org,2002:map';\n    }\n    /**\n     * Adds a value to the collection.\n     *\n     * @param overwrite - If not set `true`, using a key that is already in the\n     *   collection will throw. Otherwise, overwrites the previous value.\n     */\n    add(pair, overwrite) {\n        let _pair;\n        if (Node.isPair(pair))\n            _pair = pair;\n        else if (!pair || typeof pair !== 'object' || !('key' in pair)) {\n            // In TypeScript, this never happens.\n            _pair = new Pair.Pair(pair, pair?.value);\n        }\n        else\n            _pair = new Pair.Pair(pair.key, pair.value);\n        const prev = findPair(this.items, _pair.key);\n        const sortEntries = this.schema?.sortMapEntries;\n        if (prev) {\n            if (!overwrite)\n                throw new Error(`Key ${_pair.key} already set`);\n            // For scalars, keep the old node & its comments and anchors\n            if (Node.isScalar(prev.value) && Scalar.isScalarValue(_pair.value))\n                prev.value.value = _pair.value;\n            else\n                prev.value = _pair.value;\n        }\n        else if (sortEntries) {\n            const i = this.items.findIndex(item => sortEntries(_pair, item) < 0);\n            if (i === -1)\n                this.items.push(_pair);\n            else\n                this.items.splice(i, 0, _pair);\n        }\n        else {\n            this.items.push(_pair);\n        }\n    }\n    delete(key) {\n        const it = findPair(this.items, key);\n        if (!it)\n            return false;\n        const del = this.items.splice(this.items.indexOf(it), 1);\n        return del.length > 0;\n    }\n    get(key, keepScalar) {\n        const it = findPair(this.items, key);\n        const node = it?.value;\n        return (!keepScalar && Node.isScalar(node) ? node.value : node) ?? undefined;\n    }\n    has(key) {\n        return !!findPair(this.items, key);\n    }\n    set(key, value) {\n        this.add(new Pair.Pair(key, value), true);\n    }\n    /**\n     * @param ctx - Conversion context, originally set in Document#toJS()\n     * @param {Class} Type - If set, forces the returned collection type\n     * @returns Instance of Type, Map, or Object\n     */\n    toJSON(_, ctx, Type) {\n        const map = Type ? new Type() : ctx?.mapAsMap ? new Map() : {};\n        if (ctx?.onCreate)\n            ctx.onCreate(map);\n        for (const item of this.items)\n            addPairToJSMap.addPairToJSMap(ctx, map, item);\n        return map;\n    }\n    toString(ctx, onComment, onChompKeep) {\n        if (!ctx)\n            return JSON.stringify(this);\n        for (const item of this.items) {\n            if (!Node.isPair(item))\n                throw new Error(`Map items must all be pairs; found ${JSON.stringify(item)} instead`);\n        }\n        if (!ctx.allNullValues && this.hasAllNullValues(false))\n            ctx = Object.assign({}, ctx, { allNullValues: true });\n        return stringifyCollection.stringifyCollection(this, ctx, {\n            blockItemPrefix: '',\n            flowChars: { start: '{', end: '}' },\n            itemIndent: ctx.indent || '',\n            onChompKeep,\n            onComment\n        });\n    }\n}\n\nexports.YAMLMap = YAMLMap;\nexports.findPair = findPair;\n","'use strict';\n\nvar stringifyCollection = require('../stringify/stringifyCollection.js');\nvar Collection = require('./Collection.js');\nvar Node = require('./Node.js');\nvar Scalar = require('./Scalar.js');\nvar toJS = require('./toJS.js');\n\nclass YAMLSeq extends Collection.Collection {\n    constructor(schema) {\n        super(Node.SEQ, schema);\n        this.items = [];\n    }\n    static get tagName() {\n        return 'tag:yaml.org,2002:seq';\n    }\n    add(value) {\n        this.items.push(value);\n    }\n    /**\n     * Removes a value from the collection.\n     *\n     * `key` must contain a representation of an integer for this to succeed.\n     * It may be wrapped in a `Scalar`.\n     *\n     * @returns `true` if the item was found and removed.\n     */\n    delete(key) {\n        const idx = asItemIndex(key);\n        if (typeof idx !== 'number')\n            return false;\n        const del = this.items.splice(idx, 1);\n        return del.length > 0;\n    }\n    get(key, keepScalar) {\n        const idx = asItemIndex(key);\n        if (typeof idx !== 'number')\n            return undefined;\n        const it = this.items[idx];\n        return !keepScalar && Node.isScalar(it) ? it.value : it;\n    }\n    /**\n     * Checks if the collection includes a value with the key `key`.\n     *\n     * `key` must contain a representation of an integer for this to succeed.\n     * It may be wrapped in a `Scalar`.\n     */\n    has(key) {\n        const idx = asItemIndex(key);\n        return typeof idx === 'number' && idx < this.items.length;\n    }\n    /**\n     * Sets a value in this collection. For `!!set`, `value` needs to be a\n     * boolean to add/remove the item from the set.\n     *\n     * If `key` does not contain a representation of an integer, this will throw.\n     * It may be wrapped in a `Scalar`.\n     */\n    set(key, value) {\n        const idx = asItemIndex(key);\n        if (typeof idx !== 'number')\n            throw new Error(`Expected a valid index, not ${key}.`);\n        const prev = this.items[idx];\n        if (Node.isScalar(prev) && Scalar.isScalarValue(value))\n            prev.value = value;\n        else\n            this.items[idx] = value;\n    }\n    toJSON(_, ctx) {\n        const seq = [];\n        if (ctx?.onCreate)\n            ctx.onCreate(seq);\n        let i = 0;\n        for (const item of this.items)\n            seq.push(toJS.toJS(item, String(i++), ctx));\n        return seq;\n    }\n    toString(ctx, onComment, onChompKeep) {\n        if (!ctx)\n            return JSON.stringify(this);\n        return stringifyCollection.stringifyCollection(this, ctx, {\n            blockItemPrefix: '- ',\n            flowChars: { start: '[', end: ']' },\n            itemIndent: (ctx.indent || '') + '  ',\n            onChompKeep,\n            onComment\n        });\n    }\n}\nfunction asItemIndex(key) {\n    let idx = Node.isScalar(key) ? key.value : key;\n    if (idx && typeof idx === 'string')\n        idx = Number(idx);\n    return typeof idx === 'number' && Number.isInteger(idx) && idx >= 0\n        ? idx\n        : null;\n}\n\nexports.YAMLSeq = YAMLSeq;\n","'use strict';\n\nvar log = require('../log.js');\nvar stringify = require('../stringify/stringify.js');\nvar Node = require('./Node.js');\nvar Scalar = require('./Scalar.js');\nvar toJS = require('./toJS.js');\n\nconst MERGE_KEY = '<<';\nfunction addPairToJSMap(ctx, map, { key, value }) {\n    if (ctx?.doc.schema.merge && isMergeKey(key)) {\n        value = Node.isAlias(value) ? value.resolve(ctx.doc) : value;\n        if (Node.isSeq(value))\n            for (const it of value.items)\n                mergeToJSMap(ctx, map, it);\n        else if (Array.isArray(value))\n            for (const it of value)\n                mergeToJSMap(ctx, map, it);\n        else\n            mergeToJSMap(ctx, map, value);\n    }\n    else {\n        const jsKey = toJS.toJS(key, '', ctx);\n        if (map instanceof Map) {\n            map.set(jsKey, toJS.toJS(value, jsKey, ctx));\n        }\n        else if (map instanceof Set) {\n            map.add(jsKey);\n        }\n        else {\n            const stringKey = stringifyKey(key, jsKey, ctx);\n            const jsValue = toJS.toJS(value, stringKey, ctx);\n            if (stringKey in map)\n                Object.defineProperty(map, stringKey, {\n                    value: jsValue,\n                    writable: true,\n                    enumerable: true,\n                    configurable: true\n                });\n            else\n                map[stringKey] = jsValue;\n        }\n    }\n    return map;\n}\nconst isMergeKey = (key) => key === MERGE_KEY ||\n    (Node.isScalar(key) &&\n        key.value === MERGE_KEY &&\n        (!key.type || key.type === Scalar.Scalar.PLAIN));\n// If the value associated with a merge key is a single mapping node, each of\n// its key/value pairs is inserted into the current mapping, unless the key\n// already exists in it. If the value associated with the merge key is a\n// sequence, then this sequence is expected to contain mapping nodes and each\n// of these nodes is merged in turn according to its order in the sequence.\n// Keys in mapping nodes earlier in the sequence override keys specified in\n// later mapping nodes. -- http://yaml.org/type/merge.html\nfunction mergeToJSMap(ctx, map, value) {\n    const source = ctx && Node.isAlias(value) ? value.resolve(ctx.doc) : value;\n    if (!Node.isMap(source))\n        throw new Error('Merge sources must be maps or map aliases');\n    const srcMap = source.toJSON(null, ctx, Map);\n    for (const [key, value] of srcMap) {\n        if (map instanceof Map) {\n            if (!map.has(key))\n                map.set(key, value);\n        }\n        else if (map instanceof Set) {\n            map.add(key);\n        }\n        else if (!Object.prototype.hasOwnProperty.call(map, key)) {\n            Object.defineProperty(map, key, {\n                value,\n                writable: true,\n                enumerable: true,\n                configurable: true\n            });\n        }\n    }\n    return map;\n}\nfunction stringifyKey(key, jsKey, ctx) {\n    if (jsKey === null)\n        return '';\n    if (typeof jsKey !== 'object')\n        return String(jsKey);\n    if (Node.isNode(key) && ctx && ctx.doc) {\n        const strCtx = stringify.createStringifyContext(ctx.doc, {});\n        strCtx.anchors = new Set();\n        for (const node of ctx.anchors.keys())\n            strCtx.anchors.add(node.anchor);\n        strCtx.inFlow = true;\n        strCtx.inStringifyKey = true;\n        const strKey = key.toString(strCtx);\n        if (!ctx.mapKeyWarned) {\n            let jsonStr = JSON.stringify(strKey);\n            if (jsonStr.length > 40)\n                jsonStr = jsonStr.substring(0, 36) + '...\"';\n            log.warn(ctx.doc.options.logLevel, `Keys with collection values will be stringified due to JS Object restrictions: ${jsonStr}. Set mapAsMap: true to use object keys.`);\n            ctx.mapKeyWarned = true;\n        }\n        return strKey;\n    }\n    return JSON.stringify(jsKey);\n}\n\nexports.addPairToJSMap = addPairToJSMap;\n","'use strict';\n\nvar Node = require('./Node.js');\n\n/**\n * Recursively convert any node or its contents to native JavaScript\n *\n * @param value - The input value\n * @param arg - If `value` defines a `toJSON()` method, use this\n *   as its first argument\n * @param ctx - Conversion context, originally set in Document#toJS(). If\n *   `{ keep: true }` is not set, output should be suitable for JSON\n *   stringification.\n */\nfunction toJS(value, arg, ctx) {\n    // eslint-disable-next-line @typescript-eslint/no-unsafe-return\n    if (Array.isArray(value))\n        return value.map((v, i) => toJS(v, String(i), ctx));\n    if (value && typeof value.toJSON === 'function') {\n        // eslint-disable-next-line @typescript-eslint/no-unsafe-call\n        if (!ctx || !Node.hasAnchor(value))\n            return value.toJSON(arg, ctx);\n        const data = { aliasCount: 0, count: 1, res: undefined };\n        ctx.anchors.set(value, data);\n        ctx.onCreate = res => {\n            data.res = res;\n            delete ctx.onCreate;\n        };\n        const res = value.toJSON(arg, ctx);\n        if (ctx.onCreate)\n            ctx.onCreate(res);\n        return res;\n    }\n    if (typeof value === 'bigint' && !ctx?.keep)\n        return Number(value);\n    return value;\n}\n\nexports.toJS = toJS;\n","'use strict';\n\nvar resolveBlockScalar = require('../compose/resolve-block-scalar.js');\nvar resolveFlowScalar = require('../compose/resolve-flow-scalar.js');\nvar errors = require('../errors.js');\nvar stringifyString = require('../stringify/stringifyString.js');\n\nfunction resolveAsScalar(token, strict = true, onError) {\n    if (token) {\n        const _onError = (pos, code, message) => {\n            const offset = typeof pos === 'number' ? pos : Array.isArray(pos) ? pos[0] : pos.offset;\n            if (onError)\n                onError(offset, code, message);\n            else\n                throw new errors.YAMLParseError([offset, offset + 1], code, message);\n        };\n        switch (token.type) {\n            case 'scalar':\n            case 'single-quoted-scalar':\n            case 'double-quoted-scalar':\n                return resolveFlowScalar.resolveFlowScalar(token, strict, _onError);\n            case 'block-scalar':\n                return resolveBlockScalar.resolveBlockScalar(token, strict, _onError);\n        }\n    }\n    return null;\n}\n/**\n * Create a new scalar token with `value`\n *\n * Values that represent an actual string but may be parsed as a different type should use a `type` other than `'PLAIN'`,\n * as this function does not support any schema operations and won't check for such conflicts.\n *\n * @param value The string representation of the value, which will have its content properly indented.\n * @param context.end Comments and whitespace after the end of the value, or after the block scalar header. If undefined, a newline will be added.\n * @param context.implicitKey Being within an implicit key may affect the resolved type of the token's value.\n * @param context.indent The indent level of the token.\n * @param context.inFlow Is this scalar within a flow collection? This may affect the resolved type of the token's value.\n * @param context.offset The offset position of the token.\n * @param context.type The preferred type of the scalar token. If undefined, the previous type of the `token` will be used, defaulting to `'PLAIN'`.\n */\nfunction createScalarToken(value, context) {\n    const { implicitKey = false, indent, inFlow = false, offset = -1, type = 'PLAIN' } = context;\n    const source = stringifyString.stringifyString({ type, value }, {\n        implicitKey,\n        indent: indent > 0 ? ' '.repeat(indent) : '',\n        inFlow,\n        options: { blockQuote: true, lineWidth: -1 }\n    });\n    const end = context.end ?? [\n        { type: 'newline', offset: -1, indent, source: '\\n' }\n    ];\n    switch (source[0]) {\n        case '|':\n        case '>': {\n            const he = source.indexOf('\\n');\n            const head = source.substring(0, he);\n            const body = source.substring(he + 1) + '\\n';\n            const props = [\n                { type: 'block-scalar-header', offset, indent, source: head }\n            ];\n            if (!addEndtoBlockProps(props, end))\n                props.push({ type: 'newline', offset: -1, indent, source: '\\n' });\n            return { type: 'block-scalar', offset, indent, props, source: body };\n        }\n        case '\"':\n            return { type: 'double-quoted-scalar', offset, indent, source, end };\n        case \"'\":\n            return { type: 'single-quoted-scalar', offset, indent, source, end };\n        default:\n            return { type: 'scalar', offset, indent, source, end };\n    }\n}\n/**\n * Set the value of `token` to the given string `value`, overwriting any previous contents and type that it may have.\n *\n * Best efforts are made to retain any comments previously associated with the `token`,\n * though all contents within a collection's `items` will be overwritten.\n *\n * Values that represent an actual string but may be parsed as a different type should use a `type` other than `'PLAIN'`,\n * as this function does not support any schema operations and won't check for such conflicts.\n *\n * @param token Any token. If it does not include an `indent` value, the value will be stringified as if it were an implicit key.\n * @param value The string representation of the value, which will have its content properly indented.\n * @param context.afterKey In most cases, values after a key should have an additional level of indentation.\n * @param context.implicitKey Being within an implicit key may affect the resolved type of the token's value.\n * @param context.inFlow Being within a flow collection may affect the resolved type of the token's value.\n * @param context.type The preferred type of the scalar token. If undefined, the previous type of the `token` will be used, defaulting to `'PLAIN'`.\n */\nfunction setScalarValue(token, value, context = {}) {\n    let { afterKey = false, implicitKey = false, inFlow = false, type } = context;\n    let indent = 'indent' in token ? token.indent : null;\n    if (afterKey && typeof indent === 'number')\n        indent += 2;\n    if (!type)\n        switch (token.type) {\n            case 'single-quoted-scalar':\n                type = 'QUOTE_SINGLE';\n                break;\n            case 'double-quoted-scalar':\n                type = 'QUOTE_DOUBLE';\n                break;\n            case 'block-scalar': {\n                const header = token.props[0];\n                if (header.type !== 'block-scalar-header')\n                    throw new Error('Invalid block scalar header');\n                type = header.source[0] === '>' ? 'BLOCK_FOLDED' : 'BLOCK_LITERAL';\n                break;\n            }\n            default:\n                type = 'PLAIN';\n        }\n    const source = stringifyString.stringifyString({ type, value }, {\n        implicitKey: implicitKey || indent === null,\n        indent: indent !== null && indent > 0 ? ' '.repeat(indent) : '',\n        inFlow,\n        options: { blockQuote: true, lineWidth: -1 }\n    });\n    switch (source[0]) {\n        case '|':\n        case '>':\n            setBlockScalarValue(token, source);\n            break;\n        case '\"':\n            setFlowScalarValue(token, source, 'double-quoted-scalar');\n            break;\n        case \"'\":\n            setFlowScalarValue(token, source, 'single-quoted-scalar');\n            break;\n        default:\n            setFlowScalarValue(token, source, 'scalar');\n    }\n}\nfunction setBlockScalarValue(token, source) {\n    const he = source.indexOf('\\n');\n    const head = source.substring(0, he);\n    const body = source.substring(he + 1) + '\\n';\n    if (token.type === 'block-scalar') {\n        const header = token.props[0];\n        if (header.type !== 'block-scalar-header')\n            throw new Error('Invalid block scalar header');\n        header.source = head;\n        token.source = body;\n    }\n    else {\n        const { offset } = token;\n        const indent = 'indent' in token ? token.indent : -1;\n        const props = [\n            { type: 'block-scalar-header', offset, indent, source: head }\n        ];\n        if (!addEndtoBlockProps(props, 'end' in token ? token.end : undefined))\n            props.push({ type: 'newline', offset: -1, indent, source: '\\n' });\n        for (const key of Object.keys(token))\n            if (key !== 'type' && key !== 'offset')\n                delete token[key];\n        Object.assign(token, { type: 'block-scalar', indent, props, source: body });\n    }\n}\n/** @returns `true` if last token is a newline */\nfunction addEndtoBlockProps(props, end) {\n    if (end)\n        for (const st of end)\n            switch (st.type) {\n                case 'space':\n                case 'comment':\n                    props.push(st);\n                    break;\n                case 'newline':\n                    props.push(st);\n                    return true;\n            }\n    return false;\n}\nfunction setFlowScalarValue(token, source, type) {\n    switch (token.type) {\n        case 'scalar':\n        case 'double-quoted-scalar':\n        case 'single-quoted-scalar':\n            token.type = type;\n            token.source = source;\n            break;\n        case 'block-scalar': {\n            const end = token.props.slice(1);\n            let oa = source.length;\n            if (token.props[0].type === 'block-scalar-header')\n                oa -= token.props[0].source.length;\n            for (const tok of end)\n                tok.offset += oa;\n            delete token.props;\n            Object.assign(token, { type, source, end });\n            break;\n        }\n        case 'block-map':\n        case 'block-seq': {\n            const offset = token.offset + source.length;\n            const nl = { type: 'newline', offset, indent: token.indent, source: '\\n' };\n            delete token.items;\n            Object.assign(token, { type, source, end: [nl] });\n            break;\n        }\n        default: {\n            const indent = 'indent' in token ? token.indent : -1;\n            const end = 'end' in token && Array.isArray(token.end)\n                ? token.end.filter(st => st.type === 'space' ||\n                    st.type === 'comment' ||\n                    st.type === 'newline')\n                : [];\n            for (const key of Object.keys(token))\n                if (key !== 'type' && key !== 'offset')\n                    delete token[key];\n            Object.assign(token, { type, indent, source, end });\n        }\n    }\n}\n\nexports.createScalarToken = createScalarToken;\nexports.resolveAsScalar = resolveAsScalar;\nexports.setScalarValue = setScalarValue;\n","'use strict';\n\n/**\n * Stringify a CST document, token, or collection item\n *\n * Fair warning: This applies no validation whatsoever, and\n * simply concatenates the sources in their logical order.\n */\nconst stringify = (cst) => 'type' in cst ? stringifyToken(cst) : stringifyItem(cst);\nfunction stringifyToken(token) {\n    switch (token.type) {\n        case 'block-scalar': {\n            let res = '';\n            for (const tok of token.props)\n                res += stringifyToken(tok);\n            return res + token.source;\n        }\n        case 'block-map':\n        case 'block-seq': {\n            let res = '';\n            for (const item of token.items)\n                res += stringifyItem(item);\n            return res;\n        }\n        case 'flow-collection': {\n            let res = token.start.source;\n            for (const item of token.items)\n                res += stringifyItem(item);\n            for (const st of token.end)\n                res += st.source;\n            return res;\n        }\n        case 'document': {\n            let res = stringifyItem(token);\n            if (token.end)\n                for (const st of token.end)\n                    res += st.source;\n            return res;\n        }\n        default: {\n            let res = token.source;\n            if ('end' in token && token.end)\n                for (const st of token.end)\n                    res += st.source;\n            return res;\n        }\n    }\n}\nfunction stringifyItem({ start, key, sep, value }) {\n    let res = '';\n    for (const st of start)\n        res += st.source;\n    if (key)\n        res += stringifyToken(key);\n    if (sep)\n        for (const st of sep)\n            res += st.source;\n    if (value)\n        res += stringifyToken(value);\n    return res;\n}\n\nexports.stringify = stringify;\n","'use strict';\n\nconst BREAK = Symbol('break visit');\nconst SKIP = Symbol('skip children');\nconst REMOVE = Symbol('remove item');\n/**\n * Apply a visitor to a CST document or item.\n *\n * Walks through the tree (depth-first) starting from the root, calling a\n * `visitor` function with two arguments when entering each item:\n *   - `item`: The current item, which included the following members:\n *     - `start: SourceToken[]` – Source tokens before the key or value,\n *       possibly including its anchor or tag.\n *     - `key?: Token | null` – Set for pair values. May then be `null`, if\n *       the key before the `:` separator is empty.\n *     - `sep?: SourceToken[]` – Source tokens between the key and the value,\n *       which should include the `:` map value indicator if `value` is set.\n *     - `value?: Token` – The value of a sequence item, or of a map pair.\n *   - `path`: The steps from the root to the current node, as an array of\n *     `['key' | 'value', number]` tuples.\n *\n * The return value of the visitor may be used to control the traversal:\n *   - `undefined` (default): Do nothing and continue\n *   - `visit.SKIP`: Do not visit the children of this token, continue with\n *      next sibling\n *   - `visit.BREAK`: Terminate traversal completely\n *   - `visit.REMOVE`: Remove the current item, then continue with the next one\n *   - `number`: Set the index of the next step. This is useful especially if\n *     the index of the current token has changed.\n *   - `function`: Define the next visitor for this item. After the original\n *     visitor is called on item entry, next visitors are called after handling\n *     a non-empty `key` and when exiting the item.\n */\nfunction visit(cst, visitor) {\n    if ('type' in cst && cst.type === 'document')\n        cst = { start: cst.start, value: cst.value };\n    _visit(Object.freeze([]), cst, visitor);\n}\n// Without the `as symbol` casts, TS declares these in the `visit`\n// namespace using `var`, but then complains about that because\n// `unique symbol` must be `const`.\n/** Terminate visit traversal completely */\nvisit.BREAK = BREAK;\n/** Do not visit the children of the current item */\nvisit.SKIP = SKIP;\n/** Remove the current item */\nvisit.REMOVE = REMOVE;\n/** Find the item at `path` from `cst` as the root */\nvisit.itemAtPath = (cst, path) => {\n    let item = cst;\n    for (const [field, index] of path) {\n        const tok = item?.[field];\n        if (tok && 'items' in tok) {\n            item = tok.items[index];\n        }\n        else\n            return undefined;\n    }\n    return item;\n};\n/**\n * Get the immediate parent collection of the item at `path` from `cst` as the root.\n *\n * Throws an error if the collection is not found, which should never happen if the item itself exists.\n */\nvisit.parentCollection = (cst, path) => {\n    const parent = visit.itemAtPath(cst, path.slice(0, -1));\n    const field = path[path.length - 1][0];\n    const coll = parent?.[field];\n    if (coll && 'items' in coll)\n        return coll;\n    throw new Error('Parent collection not found');\n};\nfunction _visit(path, item, visitor) {\n    let ctrl = visitor(item, path);\n    if (typeof ctrl === 'symbol')\n        return ctrl;\n    for (const field of ['key', 'value']) {\n        const token = item[field];\n        if (token && 'items' in token) {\n            for (let i = 0; i < token.items.length; ++i) {\n                const ci = _visit(Object.freeze(path.concat([[field, i]])), token.items[i], visitor);\n                if (typeof ci === 'number')\n                    i = ci - 1;\n                else if (ci === BREAK)\n                    return BREAK;\n                else if (ci === REMOVE) {\n                    token.items.splice(i, 1);\n                    i -= 1;\n                }\n            }\n            if (typeof ctrl === 'function' && field === 'key')\n                ctrl = ctrl(item, path);\n        }\n    }\n    return typeof ctrl === 'function' ? ctrl(item, path) : ctrl;\n}\n\nexports.visit = visit;\n","'use strict';\n\nvar cstScalar = require('./cst-scalar.js');\nvar cstStringify = require('./cst-stringify.js');\nvar cstVisit = require('./cst-visit.js');\n\n/** The byte order mark */\nconst BOM = '\\u{FEFF}';\n/** Start of doc-mode */\nconst DOCUMENT = '\\x02'; // C0: Start of Text\n/** Unexpected end of flow-mode */\nconst FLOW_END = '\\x18'; // C0: Cancel\n/** Next token is a scalar value */\nconst SCALAR = '\\x1f'; // C0: Unit Separator\n/** @returns `true` if `token` is a flow or block collection */\nconst isCollection = (token) => !!token && 'items' in token;\n/** @returns `true` if `token` is a flow or block scalar; not an alias */\nconst isScalar = (token) => !!token &&\n    (token.type === 'scalar' ||\n        token.type === 'single-quoted-scalar' ||\n        token.type === 'double-quoted-scalar' ||\n        token.type === 'block-scalar');\n/* istanbul ignore next */\n/** Get a printable representation of a lexer token */\nfunction prettyToken(token) {\n    switch (token) {\n        case BOM:\n            return '<BOM>';\n        case DOCUMENT:\n            return '<DOC>';\n        case FLOW_END:\n            return '<FLOW_END>';\n        case SCALAR:\n            return '<SCALAR>';\n        default:\n            return JSON.stringify(token);\n    }\n}\n/** Identify the type of a lexer token. May return `null` for unknown tokens. */\nfunction tokenType(source) {\n    switch (source) {\n        case BOM:\n            return 'byte-order-mark';\n        case DOCUMENT:\n            return 'doc-mode';\n        case FLOW_END:\n            return 'flow-error-end';\n        case SCALAR:\n            return 'scalar';\n        case '---':\n            return 'doc-start';\n        case '...':\n            return 'doc-end';\n        case '':\n        case '\\n':\n        case '\\r\\n':\n            return 'newline';\n        case '-':\n            return 'seq-item-ind';\n        case '?':\n            return 'explicit-key-ind';\n        case ':':\n            return 'map-value-ind';\n        case '{':\n            return 'flow-map-start';\n        case '}':\n            return 'flow-map-end';\n        case '[':\n            return 'flow-seq-start';\n        case ']':\n            return 'flow-seq-end';\n        case ',':\n            return 'comma';\n    }\n    switch (source[0]) {\n        case ' ':\n        case '\\t':\n            return 'space';\n        case '#':\n            return 'comment';\n        case '%':\n            return 'directive-line';\n        case '*':\n            return 'alias';\n        case '&':\n            return 'anchor';\n        case '!':\n            return 'tag';\n        case \"'\":\n            return 'single-quoted-scalar';\n        case '\"':\n            return 'double-quoted-scalar';\n        case '|':\n        case '>':\n            return 'block-scalar-header';\n    }\n    return null;\n}\n\nexports.createScalarToken = cstScalar.createScalarToken;\nexports.resolveAsScalar = cstScalar.resolveAsScalar;\nexports.setScalarValue = cstScalar.setScalarValue;\nexports.stringify = cstStringify.stringify;\nexports.visit = cstVisit.visit;\nexports.BOM = BOM;\nexports.DOCUMENT = DOCUMENT;\nexports.FLOW_END = FLOW_END;\nexports.SCALAR = SCALAR;\nexports.isCollection = isCollection;\nexports.isScalar = isScalar;\nexports.prettyToken = prettyToken;\nexports.tokenType = tokenType;\n","'use strict';\n\nvar cst = require('./cst.js');\n\n/*\nSTART -> stream\n\nstream\n  directive -> line-end -> stream\n  indent + line-end -> stream\n  [else] -> line-start\n\nline-end\n  comment -> line-end\n  newline -> .\n  input-end -> END\n\nline-start\n  doc-start -> doc\n  doc-end -> stream\n  [else] -> indent -> block-start\n\nblock-start\n  seq-item-start -> block-start\n  explicit-key-start -> block-start\n  map-value-start -> block-start\n  [else] -> doc\n\ndoc\n  line-end -> line-start\n  spaces -> doc\n  anchor -> doc\n  tag -> doc\n  flow-start -> flow -> doc\n  flow-end -> error -> doc\n  seq-item-start -> error -> doc\n  explicit-key-start -> error -> doc\n  map-value-start -> doc\n  alias -> doc\n  quote-start -> quoted-scalar -> doc\n  block-scalar-header -> line-end -> block-scalar(min) -> line-start\n  [else] -> plain-scalar(false, min) -> doc\n\nflow\n  line-end -> flow\n  spaces -> flow\n  anchor -> flow\n  tag -> flow\n  flow-start -> flow -> flow\n  flow-end -> .\n  seq-item-start -> error -> flow\n  explicit-key-start -> flow\n  map-value-start -> flow\n  alias -> flow\n  quote-start -> quoted-scalar -> flow\n  comma -> flow\n  [else] -> plain-scalar(true, 0) -> flow\n\nquoted-scalar\n  quote-end -> .\n  [else] -> quoted-scalar\n\nblock-scalar(min)\n  newline + peek(indent < min) -> .\n  [else] -> block-scalar(min)\n\nplain-scalar(is-flow, min)\n  scalar-end(is-flow) -> .\n  peek(newline + (indent < min)) -> .\n  [else] -> plain-scalar(min)\n*/\nfunction isEmpty(ch) {\n    switch (ch) {\n        case undefined:\n        case ' ':\n        case '\\n':\n        case '\\r':\n        case '\\t':\n            return true;\n        default:\n            return false;\n    }\n}\nconst hexDigits = '0123456789ABCDEFabcdef'.split('');\nconst tagChars = \"0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz-#;/?:@&=+$_.!~*'()\".split('');\nconst invalidFlowScalarChars = ',[]{}'.split('');\nconst invalidAnchorChars = ' ,[]{}\\n\\r\\t'.split('');\nconst isNotAnchorChar = (ch) => !ch || invalidAnchorChars.includes(ch);\n/**\n * Splits an input string into lexical tokens, i.e. smaller strings that are\n * easily identifiable by `tokens.tokenType()`.\n *\n * Lexing starts always in a \"stream\" context. Incomplete input may be buffered\n * until a complete token can be emitted.\n *\n * In addition to slices of the original input, the following control characters\n * may also be emitted:\n *\n * - `\\x02` (Start of Text): A document starts with the next token\n * - `\\x18` (Cancel): Unexpected end of flow-mode (indicates an error)\n * - `\\x1f` (Unit Separator): Next token is a scalar value\n * - `\\u{FEFF}` (Byte order mark): Emitted separately outside documents\n */\nclass Lexer {\n    constructor() {\n        /**\n         * Flag indicating whether the end of the current buffer marks the end of\n         * all input\n         */\n        this.atEnd = false;\n        /**\n         * Explicit indent set in block scalar header, as an offset from the current\n         * minimum indent, so e.g. set to 1 from a header `|2+`. Set to -1 if not\n         * explicitly set.\n         */\n        this.blockScalarIndent = -1;\n        /**\n         * Block scalars that include a + (keep) chomping indicator in their header\n         * include trailing empty lines, which are otherwise excluded from the\n         * scalar's contents.\n         */\n        this.blockScalarKeep = false;\n        /** Current input */\n        this.buffer = '';\n        /**\n         * Flag noting whether the map value indicator : can immediately follow this\n         * node within a flow context.\n         */\n        this.flowKey = false;\n        /** Count of surrounding flow collection levels. */\n        this.flowLevel = 0;\n        /**\n         * Minimum level of indentation required for next lines to be parsed as a\n         * part of the current scalar value.\n         */\n        this.indentNext = 0;\n        /** Indentation level of the current line. */\n        this.indentValue = 0;\n        /** Position of the next \\n character. */\n        this.lineEndPos = null;\n        /** Stores the state of the lexer if reaching the end of incpomplete input */\n        this.next = null;\n        /** A pointer to `buffer`; the current position of the lexer. */\n        this.pos = 0;\n    }\n    /**\n     * Generate YAML tokens from the `source` string. If `incomplete`,\n     * a part of the last line may be left as a buffer for the next call.\n     *\n     * @returns A generator of lexical tokens\n     */\n    *lex(source, incomplete = false) {\n        if (source) {\n            this.buffer = this.buffer ? this.buffer + source : source;\n            this.lineEndPos = null;\n        }\n        this.atEnd = !incomplete;\n        let next = this.next ?? 'stream';\n        while (next && (incomplete || this.hasChars(1)))\n            next = yield* this.parseNext(next);\n    }\n    atLineEnd() {\n        let i = this.pos;\n        let ch = this.buffer[i];\n        while (ch === ' ' || ch === '\\t')\n            ch = this.buffer[++i];\n        if (!ch || ch === '#' || ch === '\\n')\n            return true;\n        if (ch === '\\r')\n            return this.buffer[i + 1] === '\\n';\n        return false;\n    }\n    charAt(n) {\n        return this.buffer[this.pos + n];\n    }\n    continueScalar(offset) {\n        let ch = this.buffer[offset];\n        if (this.indentNext > 0) {\n            let indent = 0;\n            while (ch === ' ')\n                ch = this.buffer[++indent + offset];\n            if (ch === '\\r') {\n                const next = this.buffer[indent + offset + 1];\n                if (next === '\\n' || (!next && !this.atEnd))\n                    return offset + indent + 1;\n            }\n            return ch === '\\n' || indent >= this.indentNext || (!ch && !this.atEnd)\n                ? offset + indent\n                : -1;\n        }\n        if (ch === '-' || ch === '.') {\n            const dt = this.buffer.substr(offset, 3);\n            if ((dt === '---' || dt === '...') && isEmpty(this.buffer[offset + 3]))\n                return -1;\n        }\n        return offset;\n    }\n    getLine() {\n        let end = this.lineEndPos;\n        if (typeof end !== 'number' || (end !== -1 && end < this.pos)) {\n            end = this.buffer.indexOf('\\n', this.pos);\n            this.lineEndPos = end;\n        }\n        if (end === -1)\n            return this.atEnd ? this.buffer.substring(this.pos) : null;\n        if (this.buffer[end - 1] === '\\r')\n            end -= 1;\n        return this.buffer.substring(this.pos, end);\n    }\n    hasChars(n) {\n        return this.pos + n <= this.buffer.length;\n    }\n    setNext(state) {\n        this.buffer = this.buffer.substring(this.pos);\n        this.pos = 0;\n        this.lineEndPos = null;\n        this.next = state;\n        return null;\n    }\n    peek(n) {\n        return this.buffer.substr(this.pos, n);\n    }\n    *parseNext(next) {\n        switch (next) {\n            case 'stream':\n                return yield* this.parseStream();\n            case 'line-start':\n                return yield* this.parseLineStart();\n            case 'block-start':\n                return yield* this.parseBlockStart();\n            case 'doc':\n                return yield* this.parseDocument();\n            case 'flow':\n                return yield* this.parseFlowCollection();\n            case 'quoted-scalar':\n                return yield* this.parseQuotedScalar();\n            case 'block-scalar':\n                return yield* this.parseBlockScalar();\n            case 'plain-scalar':\n                return yield* this.parsePlainScalar();\n        }\n    }\n    *parseStream() {\n        let line = this.getLine();\n        if (line === null)\n            return this.setNext('stream');\n        if (line[0] === cst.BOM) {\n            yield* this.pushCount(1);\n            line = line.substring(1);\n        }\n        if (line[0] === '%') {\n            let dirEnd = line.length;\n            const cs = line.indexOf('#');\n            if (cs !== -1) {\n                const ch = line[cs - 1];\n                if (ch === ' ' || ch === '\\t')\n                    dirEnd = cs - 1;\n            }\n            while (true) {\n                const ch = line[dirEnd - 1];\n                if (ch === ' ' || ch === '\\t')\n                    dirEnd -= 1;\n                else\n                    break;\n            }\n            const n = (yield* this.pushCount(dirEnd)) + (yield* this.pushSpaces(true));\n            yield* this.pushCount(line.length - n); // possible comment\n            this.pushNewline();\n            return 'stream';\n        }\n        if (this.atLineEnd()) {\n            const sp = yield* this.pushSpaces(true);\n            yield* this.pushCount(line.length - sp);\n            yield* this.pushNewline();\n            return 'stream';\n        }\n        yield cst.DOCUMENT;\n        return yield* this.parseLineStart();\n    }\n    *parseLineStart() {\n        const ch = this.charAt(0);\n        if (!ch && !this.atEnd)\n            return this.setNext('line-start');\n        if (ch === '-' || ch === '.') {\n            if (!this.atEnd && !this.hasChars(4))\n                return this.setNext('line-start');\n            const s = this.peek(3);\n            if (s === '---' && isEmpty(this.charAt(3))) {\n                yield* this.pushCount(3);\n                this.indentValue = 0;\n                this.indentNext = 0;\n                return 'doc';\n            }\n            else if (s === '...' && isEmpty(this.charAt(3))) {\n                yield* this.pushCount(3);\n                return 'stream';\n            }\n        }\n        this.indentValue = yield* this.pushSpaces(false);\n        if (this.indentNext > this.indentValue && !isEmpty(this.charAt(1)))\n            this.indentNext = this.indentValue;\n        return yield* this.parseBlockStart();\n    }\n    *parseBlockStart() {\n        const [ch0, ch1] = this.peek(2);\n        if (!ch1 && !this.atEnd)\n            return this.setNext('block-start');\n        if ((ch0 === '-' || ch0 === '?' || ch0 === ':') && isEmpty(ch1)) {\n            const n = (yield* this.pushCount(1)) + (yield* this.pushSpaces(true));\n            this.indentNext = this.indentValue + 1;\n            this.indentValue += n;\n            return yield* this.parseBlockStart();\n        }\n        return 'doc';\n    }\n    *parseDocument() {\n        yield* this.pushSpaces(true);\n        const line = this.getLine();\n        if (line === null)\n            return this.setNext('doc');\n        let n = yield* this.pushIndicators();\n        switch (line[n]) {\n            case '#':\n                yield* this.pushCount(line.length - n);\n            // fallthrough\n            case undefined:\n                yield* this.pushNewline();\n                return yield* this.parseLineStart();\n            case '{':\n            case '[':\n                yield* this.pushCount(1);\n                this.flowKey = false;\n                this.flowLevel = 1;\n                return 'flow';\n            case '}':\n            case ']':\n                // this is an error\n                yield* this.pushCount(1);\n                return 'doc';\n            case '*':\n                yield* this.pushUntil(isNotAnchorChar);\n                return 'doc';\n            case '\"':\n            case \"'\":\n                return yield* this.parseQuotedScalar();\n            case '|':\n            case '>':\n                n += yield* this.parseBlockScalarHeader();\n                n += yield* this.pushSpaces(true);\n                yield* this.pushCount(line.length - n);\n                yield* this.pushNewline();\n                return yield* this.parseBlockScalar();\n            default:\n                return yield* this.parsePlainScalar();\n        }\n    }\n    *parseFlowCollection() {\n        let nl, sp;\n        let indent = -1;\n        do {\n            nl = yield* this.pushNewline();\n            if (nl > 0) {\n                sp = yield* this.pushSpaces(false);\n                this.indentValue = indent = sp;\n            }\n            else {\n                sp = 0;\n            }\n            sp += yield* this.pushSpaces(true);\n        } while (nl + sp > 0);\n        const line = this.getLine();\n        if (line === null)\n            return this.setNext('flow');\n        if ((indent !== -1 && indent < this.indentNext && line[0] !== '#') ||\n            (indent === 0 &&\n                (line.startsWith('---') || line.startsWith('...')) &&\n                isEmpty(line[3]))) {\n            // Allowing for the terminal ] or } at the same (rather than greater)\n            // indent level as the initial [ or { is technically invalid, but\n            // failing here would be surprising to users.\n            const atFlowEndMarker = indent === this.indentNext - 1 &&\n                this.flowLevel === 1 &&\n                (line[0] === ']' || line[0] === '}');\n            if (!atFlowEndMarker) {\n                // this is an error\n                this.flowLevel = 0;\n                yield cst.FLOW_END;\n                return yield* this.parseLineStart();\n            }\n        }\n        let n = 0;\n        while (line[n] === ',') {\n            n += yield* this.pushCount(1);\n            n += yield* this.pushSpaces(true);\n            this.flowKey = false;\n        }\n        n += yield* this.pushIndicators();\n        switch (line[n]) {\n            case undefined:\n                return 'flow';\n            case '#':\n                yield* this.pushCount(line.length - n);\n                return 'flow';\n            case '{':\n            case '[':\n                yield* this.pushCount(1);\n                this.flowKey = false;\n                this.flowLevel += 1;\n                return 'flow';\n            case '}':\n            case ']':\n                yield* this.pushCount(1);\n                this.flowKey = true;\n                this.flowLevel -= 1;\n                return this.flowLevel ? 'flow' : 'doc';\n            case '*':\n                yield* this.pushUntil(isNotAnchorChar);\n                return 'flow';\n            case '\"':\n            case \"'\":\n                this.flowKey = true;\n                return yield* this.parseQuotedScalar();\n            case ':': {\n                const next = this.charAt(1);\n                if (this.flowKey || isEmpty(next) || next === ',') {\n                    this.flowKey = false;\n                    yield* this.pushCount(1);\n                    yield* this.pushSpaces(true);\n                    return 'flow';\n                }\n            }\n            // fallthrough\n            default:\n                this.flowKey = false;\n                return yield* this.parsePlainScalar();\n        }\n    }\n    *parseQuotedScalar() {\n        const quote = this.charAt(0);\n        let end = this.buffer.indexOf(quote, this.pos + 1);\n        if (quote === \"'\") {\n            while (end !== -1 && this.buffer[end + 1] === \"'\")\n                end = this.buffer.indexOf(\"'\", end + 2);\n        }\n        else {\n            // double-quote\n            while (end !== -1) {\n                let n = 0;\n                while (this.buffer[end - 1 - n] === '\\\\')\n                    n += 1;\n                if (n % 2 === 0)\n                    break;\n                end = this.buffer.indexOf('\"', end + 1);\n            }\n        }\n        // Only looking for newlines within the quotes\n        const qb = this.buffer.substring(0, end);\n        let nl = qb.indexOf('\\n', this.pos);\n        if (nl !== -1) {\n            while (nl !== -1) {\n                const cs = this.continueScalar(nl + 1);\n                if (cs === -1)\n                    break;\n                nl = qb.indexOf('\\n', cs);\n            }\n            if (nl !== -1) {\n                // this is an error caused by an unexpected unindent\n                end = nl - (qb[nl - 1] === '\\r' ? 2 : 1);\n            }\n        }\n        if (end === -1) {\n            if (!this.atEnd)\n                return this.setNext('quoted-scalar');\n            end = this.buffer.length;\n        }\n        yield* this.pushToIndex(end + 1, false);\n        return this.flowLevel ? 'flow' : 'doc';\n    }\n    *parseBlockScalarHeader() {\n        this.blockScalarIndent = -1;\n        this.blockScalarKeep = false;\n        let i = this.pos;\n        while (true) {\n            const ch = this.buffer[++i];\n            if (ch === '+')\n                this.blockScalarKeep = true;\n            else if (ch > '0' && ch <= '9')\n                this.blockScalarIndent = Number(ch) - 1;\n            else if (ch !== '-')\n                break;\n        }\n        return yield* this.pushUntil(ch => isEmpty(ch) || ch === '#');\n    }\n    *parseBlockScalar() {\n        let nl = this.pos - 1; // may be -1 if this.pos === 0\n        let indent = 0;\n        let ch;\n        loop: for (let i = this.pos; (ch = this.buffer[i]); ++i) {\n            switch (ch) {\n                case ' ':\n                    indent += 1;\n                    break;\n                case '\\n':\n                    nl = i;\n                    indent = 0;\n                    break;\n                case '\\r': {\n                    const next = this.buffer[i + 1];\n                    if (!next && !this.atEnd)\n                        return this.setNext('block-scalar');\n                    if (next === '\\n')\n                        break;\n                } // fallthrough\n                default:\n                    break loop;\n            }\n        }\n        if (!ch && !this.atEnd)\n            return this.setNext('block-scalar');\n        if (indent >= this.indentNext) {\n            if (this.blockScalarIndent === -1)\n                this.indentNext = indent;\n            else\n                this.indentNext += this.blockScalarIndent;\n            do {\n                const cs = this.continueScalar(nl + 1);\n                if (cs === -1)\n                    break;\n                nl = this.buffer.indexOf('\\n', cs);\n            } while (nl !== -1);\n            if (nl === -1) {\n                if (!this.atEnd)\n                    return this.setNext('block-scalar');\n                nl = this.buffer.length;\n            }\n        }\n        if (!this.blockScalarKeep) {\n            do {\n                let i = nl - 1;\n                let ch = this.buffer[i];\n                if (ch === '\\r')\n                    ch = this.buffer[--i];\n                const lastChar = i; // Drop the line if last char not more indented\n                while (ch === ' ' || ch === '\\t')\n                    ch = this.buffer[--i];\n                if (ch === '\\n' && i >= this.pos && i + 1 + indent > lastChar)\n                    nl = i;\n                else\n                    break;\n            } while (true);\n        }\n        yield cst.SCALAR;\n        yield* this.pushToIndex(nl + 1, true);\n        return yield* this.parseLineStart();\n    }\n    *parsePlainScalar() {\n        const inFlow = this.flowLevel > 0;\n        let end = this.pos - 1;\n        let i = this.pos - 1;\n        let ch;\n        while ((ch = this.buffer[++i])) {\n            if (ch === ':') {\n                const next = this.buffer[i + 1];\n                if (isEmpty(next) || (inFlow && next === ','))\n                    break;\n                end = i;\n            }\n            else if (isEmpty(ch)) {\n                let next = this.buffer[i + 1];\n                if (ch === '\\r') {\n                    if (next === '\\n') {\n                        i += 1;\n                        ch = '\\n';\n                        next = this.buffer[i + 1];\n                    }\n                    else\n                        end = i;\n                }\n                if (next === '#' || (inFlow && invalidFlowScalarChars.includes(next)))\n                    break;\n                if (ch === '\\n') {\n                    const cs = this.continueScalar(i + 1);\n                    if (cs === -1)\n                        break;\n                    i = Math.max(i, cs - 2); // to advance, but still account for ' #'\n                }\n            }\n            else {\n                if (inFlow && invalidFlowScalarChars.includes(ch))\n                    break;\n                end = i;\n            }\n        }\n        if (!ch && !this.atEnd)\n            return this.setNext('plain-scalar');\n        yield cst.SCALAR;\n        yield* this.pushToIndex(end + 1, true);\n        return inFlow ? 'flow' : 'doc';\n    }\n    *pushCount(n) {\n        if (n > 0) {\n            yield this.buffer.substr(this.pos, n);\n            this.pos += n;\n            return n;\n        }\n        return 0;\n    }\n    *pushToIndex(i, allowEmpty) {\n        const s = this.buffer.slice(this.pos, i);\n        if (s) {\n            yield s;\n            this.pos += s.length;\n            return s.length;\n        }\n        else if (allowEmpty)\n            yield '';\n        return 0;\n    }\n    *pushIndicators() {\n        switch (this.charAt(0)) {\n            case '!':\n                return ((yield* this.pushTag()) +\n                    (yield* this.pushSpaces(true)) +\n                    (yield* this.pushIndicators()));\n            case '&':\n                return ((yield* this.pushUntil(isNotAnchorChar)) +\n                    (yield* this.pushSpaces(true)) +\n                    (yield* this.pushIndicators()));\n            case '-': // this is an error\n            case '?': // this is an error outside flow collections\n            case ':': {\n                const inFlow = this.flowLevel > 0;\n                const ch1 = this.charAt(1);\n                if (isEmpty(ch1) || (inFlow && invalidFlowScalarChars.includes(ch1))) {\n                    if (!inFlow)\n                        this.indentNext = this.indentValue + 1;\n                    else if (this.flowKey)\n                        this.flowKey = false;\n                    return ((yield* this.pushCount(1)) +\n                        (yield* this.pushSpaces(true)) +\n                        (yield* this.pushIndicators()));\n                }\n            }\n        }\n        return 0;\n    }\n    *pushTag() {\n        if (this.charAt(1) === '<') {\n            let i = this.pos + 2;\n            let ch = this.buffer[i];\n            while (!isEmpty(ch) && ch !== '>')\n                ch = this.buffer[++i];\n            return yield* this.pushToIndex(ch === '>' ? i + 1 : i, false);\n        }\n        else {\n            let i = this.pos + 1;\n            let ch = this.buffer[i];\n            while (ch) {\n                if (tagChars.includes(ch))\n                    ch = this.buffer[++i];\n                else if (ch === '%' &&\n                    hexDigits.includes(this.buffer[i + 1]) &&\n                    hexDigits.includes(this.buffer[i + 2])) {\n                    ch = this.buffer[(i += 3)];\n                }\n                else\n                    break;\n            }\n            return yield* this.pushToIndex(i, false);\n        }\n    }\n    *pushNewline() {\n        const ch = this.buffer[this.pos];\n        if (ch === '\\n')\n            return yield* this.pushCount(1);\n        else if (ch === '\\r' && this.charAt(1) === '\\n')\n            return yield* this.pushCount(2);\n        else\n            return 0;\n    }\n    *pushSpaces(allowTabs) {\n        let i = this.pos - 1;\n        let ch;\n        do {\n            ch = this.buffer[++i];\n        } while (ch === ' ' || (allowTabs && ch === '\\t'));\n        const n = i - this.pos;\n        if (n > 0) {\n            yield this.buffer.substr(this.pos, n);\n            this.pos = i;\n        }\n        return n;\n    }\n    *pushUntil(test) {\n        let i = this.pos;\n        let ch = this.buffer[i];\n        while (!test(ch))\n            ch = this.buffer[++i];\n        return yield* this.pushToIndex(i, false);\n    }\n}\n\nexports.Lexer = Lexer;\n","'use strict';\n\n/**\n * Tracks newlines during parsing in order to provide an efficient API for\n * determining the one-indexed `{ line, col }` position for any offset\n * within the input.\n */\nclass LineCounter {\n    constructor() {\n        this.lineStarts = [];\n        /**\n         * Should be called in ascending order. Otherwise, call\n         * `lineCounter.lineStarts.sort()` before calling `linePos()`.\n         */\n        this.addNewLine = (offset) => this.lineStarts.push(offset);\n        /**\n         * Performs a binary search and returns the 1-indexed { line, col }\n         * position of `offset`. If `line === 0`, `addNewLine` has never been\n         * called or `offset` is before the first known newline.\n         */\n        this.linePos = (offset) => {\n            let low = 0;\n            let high = this.lineStarts.length;\n            while (low < high) {\n                const mid = (low + high) >> 1; // Math.floor((low + high) / 2)\n                if (this.lineStarts[mid] < offset)\n                    low = mid + 1;\n                else\n                    high = mid;\n            }\n            if (this.lineStarts[low] === offset)\n                return { line: low + 1, col: 1 };\n            if (low === 0)\n                return { line: 0, col: offset };\n            const start = this.lineStarts[low - 1];\n            return { line: low, col: offset - start + 1 };\n        };\n    }\n}\n\nexports.LineCounter = LineCounter;\n","'use strict';\n\nvar cst = require('./cst.js');\nvar lexer = require('./lexer.js');\n\nfunction includesToken(list, type) {\n    for (let i = 0; i < list.length; ++i)\n        if (list[i].type === type)\n            return true;\n    return false;\n}\nfunction findNonEmptyIndex(list) {\n    for (let i = 0; i < list.length; ++i) {\n        switch (list[i].type) {\n            case 'space':\n            case 'comment':\n            case 'newline':\n                break;\n            default:\n                return i;\n        }\n    }\n    return -1;\n}\nfunction isFlowToken(token) {\n    switch (token?.type) {\n        case 'alias':\n        case 'scalar':\n        case 'single-quoted-scalar':\n        case 'double-quoted-scalar':\n        case 'flow-collection':\n            return true;\n        default:\n            return false;\n    }\n}\nfunction getPrevProps(parent) {\n    switch (parent.type) {\n        case 'document':\n            return parent.start;\n        case 'block-map': {\n            const it = parent.items[parent.items.length - 1];\n            return it.sep ?? it.start;\n        }\n        case 'block-seq':\n            return parent.items[parent.items.length - 1].start;\n        /* istanbul ignore next should not happen */\n        default:\n            return [];\n    }\n}\n/** Note: May modify input array */\nfunction getFirstKeyStartProps(prev) {\n    if (prev.length === 0)\n        return [];\n    let i = prev.length;\n    loop: while (--i >= 0) {\n        switch (prev[i].type) {\n            case 'doc-start':\n            case 'explicit-key-ind':\n            case 'map-value-ind':\n            case 'seq-item-ind':\n            case 'newline':\n                break loop;\n        }\n    }\n    while (prev[++i]?.type === 'space') {\n        /* loop */\n    }\n    return prev.splice(i, prev.length);\n}\nfunction fixFlowSeqItems(fc) {\n    if (fc.start.type === 'flow-seq-start') {\n        for (const it of fc.items) {\n            if (it.sep &&\n                !it.value &&\n                !includesToken(it.start, 'explicit-key-ind') &&\n                !includesToken(it.sep, 'map-value-ind')) {\n                if (it.key)\n                    it.value = it.key;\n                delete it.key;\n                if (isFlowToken(it.value)) {\n                    if (it.value.end)\n                        Array.prototype.push.apply(it.value.end, it.sep);\n                    else\n                        it.value.end = it.sep;\n                }\n                else\n                    Array.prototype.push.apply(it.start, it.sep);\n                delete it.sep;\n            }\n        }\n    }\n}\n/**\n * A YAML concrete syntax tree (CST) parser\n *\n * ```ts\n * const src: string = ...\n * for (const token of new Parser().parse(src)) {\n *   // token: Token\n * }\n * ```\n *\n * To use the parser with a user-provided lexer:\n *\n * ```ts\n * function* parse(source: string, lexer: Lexer) {\n *   const parser = new Parser()\n *   for (const lexeme of lexer.lex(source))\n *     yield* parser.next(lexeme)\n *   yield* parser.end()\n * }\n *\n * const src: string = ...\n * const lexer = new Lexer()\n * for (const token of parse(src, lexer)) {\n *   // token: Token\n * }\n * ```\n */\nclass Parser {\n    /**\n     * @param onNewLine - If defined, called separately with the start position of\n     *   each new line (in `parse()`, including the start of input).\n     */\n    constructor(onNewLine) {\n        /** If true, space and sequence indicators count as indentation */\n        this.atNewLine = true;\n        /** If true, next token is a scalar value */\n        this.atScalar = false;\n        /** Current indentation level */\n        this.indent = 0;\n        /** Current offset since the start of parsing */\n        this.offset = 0;\n        /** On the same line with a block map key */\n        this.onKeyLine = false;\n        /** Top indicates the node that's currently being built */\n        this.stack = [];\n        /** The source of the current token, set in parse() */\n        this.source = '';\n        /** The type of the current token, set in parse() */\n        this.type = '';\n        // Must be defined after `next()`\n        this.lexer = new lexer.Lexer();\n        this.onNewLine = onNewLine;\n    }\n    /**\n     * Parse `source` as a YAML stream.\n     * If `incomplete`, a part of the last line may be left as a buffer for the next call.\n     *\n     * Errors are not thrown, but yielded as `{ type: 'error', message }` tokens.\n     *\n     * @returns A generator of tokens representing each directive, document, and other structure.\n     */\n    *parse(source, incomplete = false) {\n        if (this.onNewLine && this.offset === 0)\n            this.onNewLine(0);\n        for (const lexeme of this.lexer.lex(source, incomplete))\n            yield* this.next(lexeme);\n        if (!incomplete)\n            yield* this.end();\n    }\n    /**\n     * Advance the parser by the `source` of one lexical token.\n     */\n    *next(source) {\n        this.source = source;\n        if (process.env.LOG_TOKENS)\n            console.log('|', cst.prettyToken(source));\n        if (this.atScalar) {\n            this.atScalar = false;\n            yield* this.step();\n            this.offset += source.length;\n            return;\n        }\n        const type = cst.tokenType(source);\n        if (!type) {\n            const message = `Not a YAML token: ${source}`;\n            yield* this.pop({ type: 'error', offset: this.offset, message, source });\n            this.offset += source.length;\n        }\n        else if (type === 'scalar') {\n            this.atNewLine = false;\n            this.atScalar = true;\n            this.type = 'scalar';\n        }\n        else {\n            this.type = type;\n            yield* this.step();\n            switch (type) {\n                case 'newline':\n                    this.atNewLine = true;\n                    this.indent = 0;\n                    if (this.onNewLine)\n                        this.onNewLine(this.offset + source.length);\n                    break;\n                case 'space':\n                    if (this.atNewLine && source[0] === ' ')\n                        this.indent += source.length;\n                    break;\n                case 'explicit-key-ind':\n                case 'map-value-ind':\n                case 'seq-item-ind':\n                    if (this.atNewLine)\n                        this.indent += source.length;\n                    break;\n                case 'doc-mode':\n                case 'flow-error-end':\n                    return;\n                default:\n                    this.atNewLine = false;\n            }\n            this.offset += source.length;\n        }\n    }\n    /** Call at end of input to push out any remaining constructions */\n    *end() {\n        while (this.stack.length > 0)\n            yield* this.pop();\n    }\n    get sourceToken() {\n        const st = {\n            type: this.type,\n            offset: this.offset,\n            indent: this.indent,\n            source: this.source\n        };\n        return st;\n    }\n    *step() {\n        const top = this.peek(1);\n        if (this.type === 'doc-end' && (!top || top.type !== 'doc-end')) {\n            while (this.stack.length > 0)\n                yield* this.pop();\n            this.stack.push({\n                type: 'doc-end',\n                offset: this.offset,\n                source: this.source\n            });\n            return;\n        }\n        if (!top)\n            return yield* this.stream();\n        switch (top.type) {\n            case 'document':\n                return yield* this.document(top);\n            case 'alias':\n            case 'scalar':\n            case 'single-quoted-scalar':\n            case 'double-quoted-scalar':\n                return yield* this.scalar(top);\n            case 'block-scalar':\n                return yield* this.blockScalar(top);\n            case 'block-map':\n                return yield* this.blockMap(top);\n            case 'block-seq':\n                return yield* this.blockSequence(top);\n            case 'flow-collection':\n                return yield* this.flowCollection(top);\n            case 'doc-end':\n                return yield* this.documentEnd(top);\n        }\n        /* istanbul ignore next should not happen */\n        yield* this.pop();\n    }\n    peek(n) {\n        return this.stack[this.stack.length - n];\n    }\n    *pop(error) {\n        const token = error ?? this.stack.pop();\n        /* istanbul ignore if should not happen */\n        if (!token) {\n            const message = 'Tried to pop an empty stack';\n            yield { type: 'error', offset: this.offset, source: '', message };\n        }\n        else if (this.stack.length === 0) {\n            yield token;\n        }\n        else {\n            const top = this.peek(1);\n            if (token.type === 'block-scalar') {\n                // Block scalars use their parent rather than header indent\n                token.indent = 'indent' in top ? top.indent : 0;\n            }\n            else if (token.type === 'flow-collection' && top.type === 'document') {\n                // Ignore all indent for top-level flow collections\n                token.indent = 0;\n            }\n            if (token.type === 'flow-collection')\n                fixFlowSeqItems(token);\n            switch (top.type) {\n                case 'document':\n                    top.value = token;\n                    break;\n                case 'block-scalar':\n                    top.props.push(token); // error\n                    break;\n                case 'block-map': {\n                    const it = top.items[top.items.length - 1];\n                    if (it.value) {\n                        top.items.push({ start: [], key: token, sep: [] });\n                        this.onKeyLine = true;\n                        return;\n                    }\n                    else if (it.sep) {\n                        it.value = token;\n                    }\n                    else {\n                        Object.assign(it, { key: token, sep: [] });\n                        this.onKeyLine = !includesToken(it.start, 'explicit-key-ind');\n                        return;\n                    }\n                    break;\n                }\n                case 'block-seq': {\n                    const it = top.items[top.items.length - 1];\n                    if (it.value)\n                        top.items.push({ start: [], value: token });\n                    else\n                        it.value = token;\n                    break;\n                }\n                case 'flow-collection': {\n                    const it = top.items[top.items.length - 1];\n                    if (!it || it.value)\n                        top.items.push({ start: [], key: token, sep: [] });\n                    else if (it.sep)\n                        it.value = token;\n                    else\n                        Object.assign(it, { key: token, sep: [] });\n                    return;\n                }\n                /* istanbul ignore next should not happen */\n                default:\n                    yield* this.pop();\n                    yield* this.pop(token);\n            }\n            if ((top.type === 'document' ||\n                top.type === 'block-map' ||\n                top.type === 'block-seq') &&\n                (token.type === 'block-map' || token.type === 'block-seq')) {\n                const last = token.items[token.items.length - 1];\n                if (last &&\n                    !last.sep &&\n                    !last.value &&\n                    last.start.length > 0 &&\n                    findNonEmptyIndex(last.start) === -1 &&\n                    (token.indent === 0 ||\n                        last.start.every(st => st.type !== 'comment' || st.indent < token.indent))) {\n                    if (top.type === 'document')\n                        top.end = last.start;\n                    else\n                        top.items.push({ start: last.start });\n                    token.items.splice(-1, 1);\n                }\n            }\n        }\n    }\n    *stream() {\n        switch (this.type) {\n            case 'directive-line':\n                yield { type: 'directive', offset: this.offset, source: this.source };\n                return;\n            case 'byte-order-mark':\n            case 'space':\n            case 'comment':\n            case 'newline':\n                yield this.sourceToken;\n                return;\n            case 'doc-mode':\n            case 'doc-start': {\n                const doc = {\n                    type: 'document',\n                    offset: this.offset,\n                    start: []\n                };\n                if (this.type === 'doc-start')\n                    doc.start.push(this.sourceToken);\n                this.stack.push(doc);\n                return;\n            }\n        }\n        yield {\n            type: 'error',\n            offset: this.offset,\n            message: `Unexpected ${this.type} token in YAML stream`,\n            source: this.source\n        };\n    }\n    *document(doc) {\n        if (doc.value)\n            return yield* this.lineEnd(doc);\n        switch (this.type) {\n            case 'doc-start': {\n                if (findNonEmptyIndex(doc.start) !== -1) {\n                    yield* this.pop();\n                    yield* this.step();\n                }\n                else\n                    doc.start.push(this.sourceToken);\n                return;\n            }\n            case 'anchor':\n            case 'tag':\n            case 'space':\n            case 'comment':\n            case 'newline':\n                doc.start.push(this.sourceToken);\n                return;\n        }\n        const bv = this.startBlockValue(doc);\n        if (bv)\n            this.stack.push(bv);\n        else {\n            yield {\n                type: 'error',\n                offset: this.offset,\n                message: `Unexpected ${this.type} token in YAML document`,\n                source: this.source\n            };\n        }\n    }\n    *scalar(scalar) {\n        if (this.type === 'map-value-ind') {\n            const prev = getPrevProps(this.peek(2));\n            const start = getFirstKeyStartProps(prev);\n            let sep;\n            if (scalar.end) {\n                sep = scalar.end;\n                sep.push(this.sourceToken);\n                delete scalar.end;\n            }\n            else\n                sep = [this.sourceToken];\n            const map = {\n                type: 'block-map',\n                offset: scalar.offset,\n                indent: scalar.indent,\n                items: [{ start, key: scalar, sep }]\n            };\n            this.onKeyLine = true;\n            this.stack[this.stack.length - 1] = map;\n        }\n        else\n            yield* this.lineEnd(scalar);\n    }\n    *blockScalar(scalar) {\n        switch (this.type) {\n            case 'space':\n            case 'comment':\n            case 'newline':\n                scalar.props.push(this.sourceToken);\n                return;\n            case 'scalar':\n                scalar.source = this.source;\n                // block-scalar source includes trailing newline\n                this.atNewLine = true;\n                this.indent = 0;\n                if (this.onNewLine) {\n                    let nl = this.source.indexOf('\\n') + 1;\n                    while (nl !== 0) {\n                        this.onNewLine(this.offset + nl);\n                        nl = this.source.indexOf('\\n', nl) + 1;\n                    }\n                }\n                yield* this.pop();\n                break;\n            /* istanbul ignore next should not happen */\n            default:\n                yield* this.pop();\n                yield* this.step();\n        }\n    }\n    *blockMap(map) {\n        const it = map.items[map.items.length - 1];\n        // it.sep is true-ish if pair already has key or : separator\n        switch (this.type) {\n            case 'newline':\n                this.onKeyLine = false;\n                if (it.value) {\n                    const end = 'end' in it.value ? it.value.end : undefined;\n                    const last = Array.isArray(end) ? end[end.length - 1] : undefined;\n                    if (last?.type === 'comment')\n                        end?.push(this.sourceToken);\n                    else\n                        map.items.push({ start: [this.sourceToken] });\n                }\n                else if (it.sep) {\n                    it.sep.push(this.sourceToken);\n                }\n                else {\n                    it.start.push(this.sourceToken);\n                }\n                return;\n            case 'space':\n            case 'comment':\n                if (it.value) {\n                    map.items.push({ start: [this.sourceToken] });\n                }\n                else if (it.sep) {\n                    it.sep.push(this.sourceToken);\n                }\n                else {\n                    if (this.atIndentedComment(it.start, map.indent)) {\n                        const prev = map.items[map.items.length - 2];\n                        const end = prev?.value?.end;\n                        if (Array.isArray(end)) {\n                            Array.prototype.push.apply(end, it.start);\n                            end.push(this.sourceToken);\n                            map.items.pop();\n                            return;\n                        }\n                    }\n                    it.start.push(this.sourceToken);\n                }\n                return;\n        }\n        if (this.indent >= map.indent) {\n            const atNextItem = !this.onKeyLine && this.indent === map.indent && it.sep;\n            // For empty nodes, assign newline-separated not indented empty tokens to following node\n            let start = [];\n            if (atNextItem && it.sep && !it.value) {\n                const nl = [];\n                for (let i = 0; i < it.sep.length; ++i) {\n                    const st = it.sep[i];\n                    switch (st.type) {\n                        case 'newline':\n                            nl.push(i);\n                            break;\n                        case 'space':\n                            break;\n                        case 'comment':\n                            if (st.indent > map.indent)\n                                nl.length = 0;\n                            break;\n                        default:\n                            nl.length = 0;\n                    }\n                }\n                if (nl.length >= 2)\n                    start = it.sep.splice(nl[1]);\n            }\n            switch (this.type) {\n                case 'anchor':\n                case 'tag':\n                    if (atNextItem || it.value) {\n                        start.push(this.sourceToken);\n                        map.items.push({ start });\n                        this.onKeyLine = true;\n                    }\n                    else if (it.sep) {\n                        it.sep.push(this.sourceToken);\n                    }\n                    else {\n                        it.start.push(this.sourceToken);\n                    }\n                    return;\n                case 'explicit-key-ind':\n                    if (!it.sep && !includesToken(it.start, 'explicit-key-ind')) {\n                        it.start.push(this.sourceToken);\n                    }\n                    else if (atNextItem || it.value) {\n                        start.push(this.sourceToken);\n                        map.items.push({ start });\n                    }\n                    else {\n                        this.stack.push({\n                            type: 'block-map',\n                            offset: this.offset,\n                            indent: this.indent,\n                            items: [{ start: [this.sourceToken] }]\n                        });\n                    }\n                    this.onKeyLine = true;\n                    return;\n                case 'map-value-ind':\n                    if (includesToken(it.start, 'explicit-key-ind')) {\n                        if (!it.sep) {\n                            if (includesToken(it.start, 'newline')) {\n                                Object.assign(it, { key: null, sep: [this.sourceToken] });\n                            }\n                            else {\n                                const start = getFirstKeyStartProps(it.start);\n                                this.stack.push({\n                                    type: 'block-map',\n                                    offset: this.offset,\n                                    indent: this.indent,\n                                    items: [{ start, key: null, sep: [this.sourceToken] }]\n                                });\n                            }\n                        }\n                        else if (it.value) {\n                            map.items.push({ start: [], key: null, sep: [this.sourceToken] });\n                        }\n                        else if (includesToken(it.sep, 'map-value-ind')) {\n                            this.stack.push({\n                                type: 'block-map',\n                                offset: this.offset,\n                                indent: this.indent,\n                                items: [{ start, key: null, sep: [this.sourceToken] }]\n                            });\n                        }\n                        else if (isFlowToken(it.key) &&\n                            !includesToken(it.sep, 'newline')) {\n                            const start = getFirstKeyStartProps(it.start);\n                            const key = it.key;\n                            const sep = it.sep;\n                            sep.push(this.sourceToken);\n                            // @ts-expect-error type guard is wrong here\n                            delete it.key, delete it.sep;\n                            this.stack.push({\n                                type: 'block-map',\n                                offset: this.offset,\n                                indent: this.indent,\n                                items: [{ start, key, sep }]\n                            });\n                        }\n                        else if (start.length > 0) {\n                            // Not actually at next item\n                            it.sep = it.sep.concat(start, this.sourceToken);\n                        }\n                        else {\n                            it.sep.push(this.sourceToken);\n                        }\n                    }\n                    else {\n                        if (!it.sep) {\n                            Object.assign(it, { key: null, sep: [this.sourceToken] });\n                        }\n                        else if (it.value || atNextItem) {\n                            map.items.push({ start, key: null, sep: [this.sourceToken] });\n                        }\n                        else if (includesToken(it.sep, 'map-value-ind')) {\n                            this.stack.push({\n                                type: 'block-map',\n                                offset: this.offset,\n                                indent: this.indent,\n                                items: [{ start: [], key: null, sep: [this.sourceToken] }]\n                            });\n                        }\n                        else {\n                            it.sep.push(this.sourceToken);\n                        }\n                    }\n                    this.onKeyLine = true;\n                    return;\n                case 'alias':\n                case 'scalar':\n                case 'single-quoted-scalar':\n                case 'double-quoted-scalar': {\n                    const fs = this.flowScalar(this.type);\n                    if (atNextItem || it.value) {\n                        map.items.push({ start, key: fs, sep: [] });\n                        this.onKeyLine = true;\n                    }\n                    else if (it.sep) {\n                        this.stack.push(fs);\n                    }\n                    else {\n                        Object.assign(it, { key: fs, sep: [] });\n                        this.onKeyLine = true;\n                    }\n                    return;\n                }\n                default: {\n                    const bv = this.startBlockValue(map);\n                    if (bv) {\n                        if (atNextItem &&\n                            bv.type !== 'block-seq' &&\n                            includesToken(it.start, 'explicit-key-ind')) {\n                            map.items.push({ start });\n                        }\n                        this.stack.push(bv);\n                        return;\n                    }\n                }\n            }\n        }\n        yield* this.pop();\n        yield* this.step();\n    }\n    *blockSequence(seq) {\n        const it = seq.items[seq.items.length - 1];\n        switch (this.type) {\n            case 'newline':\n                if (it.value) {\n                    const end = 'end' in it.value ? it.value.end : undefined;\n                    const last = Array.isArray(end) ? end[end.length - 1] : undefined;\n                    if (last?.type === 'comment')\n                        end?.push(this.sourceToken);\n                    else\n                        seq.items.push({ start: [this.sourceToken] });\n                }\n                else\n                    it.start.push(this.sourceToken);\n                return;\n            case 'space':\n            case 'comment':\n                if (it.value)\n                    seq.items.push({ start: [this.sourceToken] });\n                else {\n                    if (this.atIndentedComment(it.start, seq.indent)) {\n                        const prev = seq.items[seq.items.length - 2];\n                        const end = prev?.value?.end;\n                        if (Array.isArray(end)) {\n                            Array.prototype.push.apply(end, it.start);\n                            end.push(this.sourceToken);\n                            seq.items.pop();\n                            return;\n                        }\n                    }\n                    it.start.push(this.sourceToken);\n                }\n                return;\n            case 'anchor':\n            case 'tag':\n                if (it.value || this.indent <= seq.indent)\n                    break;\n                it.start.push(this.sourceToken);\n                return;\n            case 'seq-item-ind':\n                if (this.indent !== seq.indent)\n                    break;\n                if (it.value || includesToken(it.start, 'seq-item-ind'))\n                    seq.items.push({ start: [this.sourceToken] });\n                else\n                    it.start.push(this.sourceToken);\n                return;\n        }\n        if (this.indent > seq.indent) {\n            const bv = this.startBlockValue(seq);\n            if (bv) {\n                this.stack.push(bv);\n                return;\n            }\n        }\n        yield* this.pop();\n        yield* this.step();\n    }\n    *flowCollection(fc) {\n        const it = fc.items[fc.items.length - 1];\n        if (this.type === 'flow-error-end') {\n            let top;\n            do {\n                yield* this.pop();\n                top = this.peek(1);\n            } while (top && top.type === 'flow-collection');\n        }\n        else if (fc.end.length === 0) {\n            switch (this.type) {\n                case 'comma':\n                case 'explicit-key-ind':\n                    if (!it || it.sep)\n                        fc.items.push({ start: [this.sourceToken] });\n                    else\n                        it.start.push(this.sourceToken);\n                    return;\n                case 'map-value-ind':\n                    if (!it || it.value)\n                        fc.items.push({ start: [], key: null, sep: [this.sourceToken] });\n                    else if (it.sep)\n                        it.sep.push(this.sourceToken);\n                    else\n                        Object.assign(it, { key: null, sep: [this.sourceToken] });\n                    return;\n                case 'space':\n                case 'comment':\n                case 'newline':\n                case 'anchor':\n                case 'tag':\n                    if (!it || it.value)\n                        fc.items.push({ start: [this.sourceToken] });\n                    else if (it.sep)\n                        it.sep.push(this.sourceToken);\n                    else\n                        it.start.push(this.sourceToken);\n                    return;\n                case 'alias':\n                case 'scalar':\n                case 'single-quoted-scalar':\n                case 'double-quoted-scalar': {\n                    const fs = this.flowScalar(this.type);\n                    if (!it || it.value)\n                        fc.items.push({ start: [], key: fs, sep: [] });\n                    else if (it.sep)\n                        this.stack.push(fs);\n                    else\n                        Object.assign(it, { key: fs, sep: [] });\n                    return;\n                }\n                case 'flow-map-end':\n                case 'flow-seq-end':\n                    fc.end.push(this.sourceToken);\n                    return;\n            }\n            const bv = this.startBlockValue(fc);\n            /* istanbul ignore else should not happen */\n            if (bv)\n                this.stack.push(bv);\n            else {\n                yield* this.pop();\n                yield* this.step();\n            }\n        }\n        else {\n            const parent = this.peek(2);\n            if (parent.type === 'block-map' &&\n                ((this.type === 'map-value-ind' && parent.indent === fc.indent) ||\n                    (this.type === 'newline' &&\n                        !parent.items[parent.items.length - 1].sep))) {\n                yield* this.pop();\n                yield* this.step();\n            }\n            else if (this.type === 'map-value-ind' &&\n                parent.type !== 'flow-collection') {\n                const prev = getPrevProps(parent);\n                const start = getFirstKeyStartProps(prev);\n                fixFlowSeqItems(fc);\n                const sep = fc.end.splice(1, fc.end.length);\n                sep.push(this.sourceToken);\n                const map = {\n                    type: 'block-map',\n                    offset: fc.offset,\n                    indent: fc.indent,\n                    items: [{ start, key: fc, sep }]\n                };\n                this.onKeyLine = true;\n                this.stack[this.stack.length - 1] = map;\n            }\n            else {\n                yield* this.lineEnd(fc);\n            }\n        }\n    }\n    flowScalar(type) {\n        if (this.onNewLine) {\n            let nl = this.source.indexOf('\\n') + 1;\n            while (nl !== 0) {\n                this.onNewLine(this.offset + nl);\n                nl = this.source.indexOf('\\n', nl) + 1;\n            }\n        }\n        return {\n            type,\n            offset: this.offset,\n            indent: this.indent,\n            source: this.source\n        };\n    }\n    startBlockValue(parent) {\n        switch (this.type) {\n            case 'alias':\n            case 'scalar':\n            case 'single-quoted-scalar':\n            case 'double-quoted-scalar':\n                return this.flowScalar(this.type);\n            case 'block-scalar-header':\n                return {\n                    type: 'block-scalar',\n                    offset: this.offset,\n                    indent: this.indent,\n                    props: [this.sourceToken],\n                    source: ''\n                };\n            case 'flow-map-start':\n            case 'flow-seq-start':\n                return {\n                    type: 'flow-collection',\n                    offset: this.offset,\n                    indent: this.indent,\n                    start: this.sourceToken,\n                    items: [],\n                    end: []\n                };\n            case 'seq-item-ind':\n                return {\n                    type: 'block-seq',\n                    offset: this.offset,\n                    indent: this.indent,\n                    items: [{ start: [this.sourceToken] }]\n                };\n            case 'explicit-key-ind': {\n                this.onKeyLine = true;\n                const prev = getPrevProps(parent);\n                const start = getFirstKeyStartProps(prev);\n                start.push(this.sourceToken);\n                return {\n                    type: 'block-map',\n                    offset: this.offset,\n                    indent: this.indent,\n                    items: [{ start }]\n                };\n            }\n            case 'map-value-ind': {\n                this.onKeyLine = true;\n                const prev = getPrevProps(parent);\n                const start = getFirstKeyStartProps(prev);\n                return {\n                    type: 'block-map',\n                    offset: this.offset,\n                    indent: this.indent,\n                    items: [{ start, key: null, sep: [this.sourceToken] }]\n                };\n            }\n        }\n        return null;\n    }\n    atIndentedComment(start, indent) {\n        if (this.type !== 'comment')\n            return false;\n        if (this.indent <= indent)\n            return false;\n        return start.every(st => st.type === 'newline' || st.type === 'space');\n    }\n    *documentEnd(docEnd) {\n        if (this.type !== 'doc-mode') {\n            if (docEnd.end)\n                docEnd.end.push(this.sourceToken);\n            else\n                docEnd.end = [this.sourceToken];\n            if (this.type === 'newline')\n                yield* this.pop();\n        }\n    }\n    *lineEnd(token) {\n        switch (this.type) {\n            case 'comma':\n            case 'doc-start':\n            case 'doc-end':\n            case 'flow-seq-end':\n            case 'flow-map-end':\n            case 'map-value-ind':\n                yield* this.pop();\n                yield* this.step();\n                break;\n            case 'newline':\n                this.onKeyLine = false;\n            // fallthrough\n            case 'space':\n            case 'comment':\n            default:\n                // all other values are errors\n                if (token.end)\n                    token.end.push(this.sourceToken);\n                else\n                    token.end = [this.sourceToken];\n                if (this.type === 'newline')\n                    yield* this.pop();\n        }\n    }\n}\n\nexports.Parser = Parser;\n","'use strict';\n\nvar composer = require('./compose/composer.js');\nvar Document = require('./doc/Document.js');\nvar errors = require('./errors.js');\nvar log = require('./log.js');\nvar lineCounter = require('./parse/line-counter.js');\nvar parser = require('./parse/parser.js');\n\nfunction parseOptions(options) {\n    const prettyErrors = options.prettyErrors !== false;\n    const lineCounter$1 = options.lineCounter || (prettyErrors && new lineCounter.LineCounter()) || null;\n    return { lineCounter: lineCounter$1, prettyErrors };\n}\n/**\n * Parse the input as a stream of YAML documents.\n *\n * Documents should be separated from each other by `...` or `---` marker lines.\n *\n * @returns If an empty `docs` array is returned, it will be of type\n *   EmptyStream and contain additional stream information. In\n *   TypeScript, you should use `'empty' in docs` as a type guard for it.\n */\nfunction parseAllDocuments(source, options = {}) {\n    const { lineCounter, prettyErrors } = parseOptions(options);\n    const parser$1 = new parser.Parser(lineCounter?.addNewLine);\n    const composer$1 = new composer.Composer(options);\n    const docs = Array.from(composer$1.compose(parser$1.parse(source)));\n    if (prettyErrors && lineCounter)\n        for (const doc of docs) {\n            doc.errors.forEach(errors.prettifyError(source, lineCounter));\n            doc.warnings.forEach(errors.prettifyError(source, lineCounter));\n        }\n    if (docs.length > 0)\n        return docs;\n    return Object.assign([], { empty: true }, composer$1.streamInfo());\n}\n/** Parse an input string into a single YAML.Document */\nfunction parseDocument(source, options = {}) {\n    const { lineCounter, prettyErrors } = parseOptions(options);\n    const parser$1 = new parser.Parser(lineCounter?.addNewLine);\n    const composer$1 = new composer.Composer(options);\n    // `doc` is always set by compose.end(true) at the very latest\n    let doc = null;\n    for (const _doc of composer$1.compose(parser$1.parse(source), true, source.length)) {\n        if (!doc)\n            doc = _doc;\n        else if (doc.options.logLevel !== 'silent') {\n            doc.errors.push(new errors.YAMLParseError(_doc.range.slice(0, 2), 'MULTIPLE_DOCS', 'Source contains multiple documents; please use YAML.parseAllDocuments()'));\n            break;\n        }\n    }\n    if (prettyErrors && lineCounter) {\n        doc.errors.forEach(errors.prettifyError(source, lineCounter));\n        doc.warnings.forEach(errors.prettifyError(source, lineCounter));\n    }\n    return doc;\n}\nfunction parse(src, reviver, options) {\n    let _reviver = undefined;\n    if (typeof reviver === 'function') {\n        _reviver = reviver;\n    }\n    else if (options === undefined && reviver && typeof reviver === 'object') {\n        options = reviver;\n    }\n    const doc = parseDocument(src, options);\n    if (!doc)\n        return null;\n    doc.warnings.forEach(warning => log.warn(doc.options.logLevel, warning));\n    if (doc.errors.length > 0) {\n        if (doc.options.logLevel !== 'silent')\n            throw doc.errors[0];\n        else\n            doc.errors = [];\n    }\n    return doc.toJS(Object.assign({ reviver: _reviver }, options));\n}\nfunction stringify(value, replacer, options) {\n    let _replacer = null;\n    if (typeof replacer === 'function' || Array.isArray(replacer)) {\n        _replacer = replacer;\n    }\n    else if (options === undefined && replacer) {\n        options = replacer;\n    }\n    if (typeof options === 'string')\n        options = options.length;\n    if (typeof options === 'number') {\n        const indent = Math.round(options);\n        options = indent < 1 ? undefined : indent > 8 ? { indent: 8 } : { indent };\n    }\n    if (value === undefined) {\n        const { keepUndefined } = options ?? replacer ?? {};\n        if (!keepUndefined)\n            return undefined;\n    }\n    return new Document.Document(value, _replacer, options).toString(options);\n}\n\nexports.parse = parse;\nexports.parseAllDocuments = parseAllDocuments;\nexports.parseDocument = parseDocument;\nexports.stringify = stringify;\n","'use strict';\n\nvar Node = require('../nodes/Node.js');\nvar map = require('./common/map.js');\nvar seq = require('./common/seq.js');\nvar string = require('./common/string.js');\nvar tags = require('./tags.js');\n\nconst sortMapEntriesByKey = (a, b) => a.key < b.key ? -1 : a.key > b.key ? 1 : 0;\nclass Schema {\n    constructor({ compat, customTags, merge, resolveKnownTags, schema, sortMapEntries, toStringDefaults }) {\n        this.compat = Array.isArray(compat)\n            ? tags.getTags(compat, 'compat')\n            : compat\n                ? tags.getTags(null, compat)\n                : null;\n        this.merge = !!merge;\n        this.name = (typeof schema === 'string' && schema) || 'core';\n        this.knownTags = resolveKnownTags ? tags.coreKnownTags : {};\n        this.tags = tags.getTags(customTags, this.name);\n        this.toStringOptions = toStringDefaults ?? null;\n        Object.defineProperty(this, Node.MAP, { value: map.map });\n        Object.defineProperty(this, Node.SCALAR, { value: string.string });\n        Object.defineProperty(this, Node.SEQ, { value: seq.seq });\n        // Used by createMap()\n        this.sortMapEntries =\n            typeof sortMapEntries === 'function'\n                ? sortMapEntries\n                : sortMapEntries === true\n                    ? sortMapEntriesByKey\n                    : null;\n    }\n    clone() {\n        const copy = Object.create(Schema.prototype, Object.getOwnPropertyDescriptors(this));\n        copy.tags = this.tags.slice();\n        return copy;\n    }\n}\n\nexports.Schema = Schema;\n","'use strict';\n\nvar Node = require('../../nodes/Node.js');\nvar Pair = require('../../nodes/Pair.js');\nvar YAMLMap = require('../../nodes/YAMLMap.js');\n\nfunction createMap(schema, obj, ctx) {\n    const { keepUndefined, replacer } = ctx;\n    const map = new YAMLMap.YAMLMap(schema);\n    const add = (key, value) => {\n        if (typeof replacer === 'function')\n            value = replacer.call(obj, key, value);\n        else if (Array.isArray(replacer) && !replacer.includes(key))\n            return;\n        if (value !== undefined || keepUndefined)\n            map.items.push(Pair.createPair(key, value, ctx));\n    };\n    if (obj instanceof Map) {\n        for (const [key, value] of obj)\n            add(key, value);\n    }\n    else if (obj && typeof obj === 'object') {\n        for (const key of Object.keys(obj))\n            add(key, obj[key]);\n    }\n    if (typeof schema.sortMapEntries === 'function') {\n        map.items.sort(schema.sortMapEntries);\n    }\n    return map;\n}\nconst map = {\n    collection: 'map',\n    createNode: createMap,\n    default: true,\n    nodeClass: YAMLMap.YAMLMap,\n    tag: 'tag:yaml.org,2002:map',\n    resolve(map, onError) {\n        if (!Node.isMap(map))\n            onError('Expected a mapping for this tag');\n        return map;\n    }\n};\n\nexports.map = map;\n","'use strict';\n\nvar Scalar = require('../../nodes/Scalar.js');\n\nconst nullTag = {\n    identify: value => value == null,\n    createNode: () => new Scalar.Scalar(null),\n    default: true,\n    tag: 'tag:yaml.org,2002:null',\n    test: /^(?:~|[Nn]ull|NULL)?$/,\n    resolve: () => new Scalar.Scalar(null),\n    stringify: ({ source }, ctx) => typeof source === 'string' && nullTag.test.test(source)\n        ? source\n        : ctx.options.nullStr\n};\n\nexports.nullTag = nullTag;\n","'use strict';\n\nvar createNode = require('../../doc/createNode.js');\nvar Node = require('../../nodes/Node.js');\nvar YAMLSeq = require('../../nodes/YAMLSeq.js');\n\nfunction createSeq(schema, obj, ctx) {\n    const { replacer } = ctx;\n    const seq = new YAMLSeq.YAMLSeq(schema);\n    if (obj && Symbol.iterator in Object(obj)) {\n        let i = 0;\n        for (let it of obj) {\n            if (typeof replacer === 'function') {\n                const key = obj instanceof Set ? it : String(i++);\n                it = replacer.call(obj, key, it);\n            }\n            seq.items.push(createNode.createNode(it, undefined, ctx));\n        }\n    }\n    return seq;\n}\nconst seq = {\n    collection: 'seq',\n    createNode: createSeq,\n    default: true,\n    nodeClass: YAMLSeq.YAMLSeq,\n    tag: 'tag:yaml.org,2002:seq',\n    resolve(seq, onError) {\n        if (!Node.isSeq(seq))\n            onError('Expected a sequence for this tag');\n        return seq;\n    }\n};\n\nexports.seq = seq;\n","'use strict';\n\nvar stringifyString = require('../../stringify/stringifyString.js');\n\nconst string = {\n    identify: value => typeof value === 'string',\n    default: true,\n    tag: 'tag:yaml.org,2002:str',\n    resolve: str => str,\n    stringify(item, ctx, onComment, onChompKeep) {\n        ctx = Object.assign({ actualString: true }, ctx);\n        return stringifyString.stringifyString(item, ctx, onComment, onChompKeep);\n    }\n};\n\nexports.string = string;\n","'use strict';\n\nvar Scalar = require('../../nodes/Scalar.js');\n\nconst boolTag = {\n    identify: value => typeof value === 'boolean',\n    default: true,\n    tag: 'tag:yaml.org,2002:bool',\n    test: /^(?:[Tt]rue|TRUE|[Ff]alse|FALSE)$/,\n    resolve: str => new Scalar.Scalar(str[0] === 't' || str[0] === 'T'),\n    stringify({ source, value }, ctx) {\n        if (source && boolTag.test.test(source)) {\n            const sv = source[0] === 't' || source[0] === 'T';\n            if (value === sv)\n                return source;\n        }\n        return value ? ctx.options.trueStr : ctx.options.falseStr;\n    }\n};\n\nexports.boolTag = boolTag;\n","'use strict';\n\nvar Scalar = require('../../nodes/Scalar.js');\nvar stringifyNumber = require('../../stringify/stringifyNumber.js');\n\nconst floatNaN = {\n    identify: value => typeof value === 'number',\n    default: true,\n    tag: 'tag:yaml.org,2002:float',\n    test: /^(?:[-+]?\\.(?:inf|Inf|INF|nan|NaN|NAN))$/,\n    resolve: str => str.slice(-3).toLowerCase() === 'nan'\n        ? NaN\n        : str[0] === '-'\n            ? Number.NEGATIVE_INFINITY\n            : Number.POSITIVE_INFINITY,\n    stringify: stringifyNumber.stringifyNumber\n};\nconst floatExp = {\n    identify: value => typeof value === 'number',\n    default: true,\n    tag: 'tag:yaml.org,2002:float',\n    format: 'EXP',\n    test: /^[-+]?(?:\\.[0-9]+|[0-9]+(?:\\.[0-9]*)?)[eE][-+]?[0-9]+$/,\n    resolve: str => parseFloat(str),\n    stringify(node) {\n        const num = Number(node.value);\n        return isFinite(num) ? num.toExponential() : stringifyNumber.stringifyNumber(node);\n    }\n};\nconst float = {\n    identify: value => typeof value === 'number',\n    default: true,\n    tag: 'tag:yaml.org,2002:float',\n    test: /^[-+]?(?:\\.[0-9]+|[0-9]+\\.[0-9]*)$/,\n    resolve(str) {\n        const node = new Scalar.Scalar(parseFloat(str));\n        const dot = str.indexOf('.');\n        if (dot !== -1 && str[str.length - 1] === '0')\n            node.minFractionDigits = str.length - dot - 1;\n        return node;\n    },\n    stringify: stringifyNumber.stringifyNumber\n};\n\nexports.float = float;\nexports.floatExp = floatExp;\nexports.floatNaN = floatNaN;\n","'use strict';\n\nvar stringifyNumber = require('../../stringify/stringifyNumber.js');\n\nconst intIdentify = (value) => typeof value === 'bigint' || Number.isInteger(value);\nconst intResolve = (str, offset, radix, { intAsBigInt }) => (intAsBigInt ? BigInt(str) : parseInt(str.substring(offset), radix));\nfunction intStringify(node, radix, prefix) {\n    const { value } = node;\n    if (intIdentify(value) && value >= 0)\n        return prefix + value.toString(radix);\n    return stringifyNumber.stringifyNumber(node);\n}\nconst intOct = {\n    identify: value => intIdentify(value) && value >= 0,\n    default: true,\n    tag: 'tag:yaml.org,2002:int',\n    format: 'OCT',\n    test: /^0o[0-7]+$/,\n    resolve: (str, _onError, opt) => intResolve(str, 2, 8, opt),\n    stringify: node => intStringify(node, 8, '0o')\n};\nconst int = {\n    identify: intIdentify,\n    default: true,\n    tag: 'tag:yaml.org,2002:int',\n    test: /^[-+]?[0-9]+$/,\n    resolve: (str, _onError, opt) => intResolve(str, 0, 10, opt),\n    stringify: stringifyNumber.stringifyNumber\n};\nconst intHex = {\n    identify: value => intIdentify(value) && value >= 0,\n    default: true,\n    tag: 'tag:yaml.org,2002:int',\n    format: 'HEX',\n    test: /^0x[0-9a-fA-F]+$/,\n    resolve: (str, _onError, opt) => intResolve(str, 2, 16, opt),\n    stringify: node => intStringify(node, 16, '0x')\n};\n\nexports.int = int;\nexports.intHex = intHex;\nexports.intOct = intOct;\n","'use strict';\n\nvar map = require('../common/map.js');\nvar _null = require('../common/null.js');\nvar seq = require('../common/seq.js');\nvar string = require('../common/string.js');\nvar bool = require('./bool.js');\nvar float = require('./float.js');\nvar int = require('./int.js');\n\nconst schema = [\n    map.map,\n    seq.seq,\n    string.string,\n    _null.nullTag,\n    bool.boolTag,\n    int.intOct,\n    int.int,\n    int.intHex,\n    float.floatNaN,\n    float.floatExp,\n    float.float\n];\n\nexports.schema = schema;\n","'use strict';\n\nvar Scalar = require('../../nodes/Scalar.js');\nvar map = require('../common/map.js');\nvar seq = require('../common/seq.js');\n\nfunction intIdentify(value) {\n    return typeof value === 'bigint' || Number.isInteger(value);\n}\nconst stringifyJSON = ({ value }) => JSON.stringify(value);\nconst jsonScalars = [\n    {\n        identify: value => typeof value === 'string',\n        default: true,\n        tag: 'tag:yaml.org,2002:str',\n        resolve: str => str,\n        stringify: stringifyJSON\n    },\n    {\n        identify: value => value == null,\n        createNode: () => new Scalar.Scalar(null),\n        default: true,\n        tag: 'tag:yaml.org,2002:null',\n        test: /^null$/,\n        resolve: () => null,\n        stringify: stringifyJSON\n    },\n    {\n        identify: value => typeof value === 'boolean',\n        default: true,\n        tag: 'tag:yaml.org,2002:bool',\n        test: /^true|false$/,\n        resolve: str => str === 'true',\n        stringify: stringifyJSON\n    },\n    {\n        identify: intIdentify,\n        default: true,\n        tag: 'tag:yaml.org,2002:int',\n        test: /^-?(?:0|[1-9][0-9]*)$/,\n        resolve: (str, _onError, { intAsBigInt }) => intAsBigInt ? BigInt(str) : parseInt(str, 10),\n        stringify: ({ value }) => intIdentify(value) ? value.toString() : JSON.stringify(value)\n    },\n    {\n        identify: value => typeof value === 'number',\n        default: true,\n        tag: 'tag:yaml.org,2002:float',\n        test: /^-?(?:0|[1-9][0-9]*)(?:\\.[0-9]*)?(?:[eE][-+]?[0-9]+)?$/,\n        resolve: str => parseFloat(str),\n        stringify: stringifyJSON\n    }\n];\nconst jsonError = {\n    default: true,\n    tag: '',\n    test: /^/,\n    resolve(str, onError) {\n        onError(`Unresolved plain scalar ${JSON.stringify(str)}`);\n        return str;\n    }\n};\nconst schema = [map.map, seq.seq].concat(jsonScalars, jsonError);\n\nexports.schema = schema;\n","'use strict';\n\nvar map = require('./common/map.js');\nvar _null = require('./common/null.js');\nvar seq = require('./common/seq.js');\nvar string = require('./common/string.js');\nvar bool = require('./core/bool.js');\nvar float = require('./core/float.js');\nvar int = require('./core/int.js');\nvar schema = require('./core/schema.js');\nvar schema$1 = require('./json/schema.js');\nvar binary = require('./yaml-1.1/binary.js');\nvar omap = require('./yaml-1.1/omap.js');\nvar pairs = require('./yaml-1.1/pairs.js');\nvar schema$2 = require('./yaml-1.1/schema.js');\nvar set = require('./yaml-1.1/set.js');\nvar timestamp = require('./yaml-1.1/timestamp.js');\n\nconst schemas = new Map([\n    ['core', schema.schema],\n    ['failsafe', [map.map, seq.seq, string.string]],\n    ['json', schema$1.schema],\n    ['yaml11', schema$2.schema],\n    ['yaml-1.1', schema$2.schema]\n]);\nconst tagsByName = {\n    binary: binary.binary,\n    bool: bool.boolTag,\n    float: float.float,\n    floatExp: float.floatExp,\n    floatNaN: float.floatNaN,\n    floatTime: timestamp.floatTime,\n    int: int.int,\n    intHex: int.intHex,\n    intOct: int.intOct,\n    intTime: timestamp.intTime,\n    map: map.map,\n    null: _null.nullTag,\n    omap: omap.omap,\n    pairs: pairs.pairs,\n    seq: seq.seq,\n    set: set.set,\n    timestamp: timestamp.timestamp\n};\nconst coreKnownTags = {\n    'tag:yaml.org,2002:binary': binary.binary,\n    'tag:yaml.org,2002:omap': omap.omap,\n    'tag:yaml.org,2002:pairs': pairs.pairs,\n    'tag:yaml.org,2002:set': set.set,\n    'tag:yaml.org,2002:timestamp': timestamp.timestamp\n};\nfunction getTags(customTags, schemaName) {\n    let tags = schemas.get(schemaName);\n    if (!tags) {\n        if (Array.isArray(customTags))\n            tags = [];\n        else {\n            const keys = Array.from(schemas.keys())\n                .filter(key => key !== 'yaml11')\n                .map(key => JSON.stringify(key))\n                .join(', ');\n            throw new Error(`Unknown schema \"${schemaName}\"; use one of ${keys} or define customTags array`);\n        }\n    }\n    if (Array.isArray(customTags)) {\n        for (const tag of customTags)\n            tags = tags.concat(tag);\n    }\n    else if (typeof customTags === 'function') {\n        tags = customTags(tags.slice());\n    }\n    return tags.map(tag => {\n        if (typeof tag !== 'string')\n            return tag;\n        const tagObj = tagsByName[tag];\n        if (tagObj)\n            return tagObj;\n        const keys = Object.keys(tagsByName)\n            .map(key => JSON.stringify(key))\n            .join(', ');\n        throw new Error(`Unknown custom tag \"${tag}\"; use one of ${keys}`);\n    });\n}\n\nexports.coreKnownTags = coreKnownTags;\nexports.getTags = getTags;\n","'use strict';\n\nvar Scalar = require('../../nodes/Scalar.js');\nvar stringifyString = require('../../stringify/stringifyString.js');\n\nconst binary = {\n    identify: value => value instanceof Uint8Array,\n    default: false,\n    tag: 'tag:yaml.org,2002:binary',\n    /**\n     * Returns a Buffer in node and an Uint8Array in browsers\n     *\n     * To use the resulting buffer as an image, you'll want to do something like:\n     *\n     *   const blob = new Blob([buffer], { type: 'image/jpeg' })\n     *   document.querySelector('#photo').src = URL.createObjectURL(blob)\n     */\n    resolve(src, onError) {\n        if (typeof Buffer === 'function') {\n            return Buffer.from(src, 'base64');\n        }\n        else if (typeof atob === 'function') {\n            // On IE 11, atob() can't handle newlines\n            const str = atob(src.replace(/[\\n\\r]/g, ''));\n            const buffer = new Uint8Array(str.length);\n            for (let i = 0; i < str.length; ++i)\n                buffer[i] = str.charCodeAt(i);\n            return buffer;\n        }\n        else {\n            onError('This environment does not support reading binary tags; either Buffer or atob is required');\n            return src;\n        }\n    },\n    stringify({ comment, type, value }, ctx, onComment, onChompKeep) {\n        const buf = value; // checked earlier by binary.identify()\n        let str;\n        if (typeof Buffer === 'function') {\n            str =\n                buf instanceof Buffer\n                    ? buf.toString('base64')\n                    : Buffer.from(buf.buffer).toString('base64');\n        }\n        else if (typeof btoa === 'function') {\n            let s = '';\n            for (let i = 0; i < buf.length; ++i)\n                s += String.fromCharCode(buf[i]);\n            str = btoa(s);\n        }\n        else {\n            throw new Error('This environment does not support writing binary tags; either Buffer or btoa is required');\n        }\n        if (!type)\n            type = Scalar.Scalar.BLOCK_LITERAL;\n        if (type !== Scalar.Scalar.QUOTE_DOUBLE) {\n            const lineWidth = Math.max(ctx.options.lineWidth - ctx.indent.length, ctx.options.minContentWidth);\n            const n = Math.ceil(str.length / lineWidth);\n            const lines = new Array(n);\n            for (let i = 0, o = 0; i < n; ++i, o += lineWidth) {\n                lines[i] = str.substr(o, lineWidth);\n            }\n            str = lines.join(type === Scalar.Scalar.BLOCK_LITERAL ? '\\n' : ' ');\n        }\n        return stringifyString.stringifyString({ comment, type, value: str }, ctx, onComment, onChompKeep);\n    }\n};\n\nexports.binary = binary;\n","'use strict';\n\nvar Scalar = require('../../nodes/Scalar.js');\n\nfunction boolStringify({ value, source }, ctx) {\n    const boolObj = value ? trueTag : falseTag;\n    if (source && boolObj.test.test(source))\n        return source;\n    return value ? ctx.options.trueStr : ctx.options.falseStr;\n}\nconst trueTag = {\n    identify: value => value === true,\n    default: true,\n    tag: 'tag:yaml.org,2002:bool',\n    test: /^(?:Y|y|[Yy]es|YES|[Tt]rue|TRUE|[Oo]n|ON)$/,\n    resolve: () => new Scalar.Scalar(true),\n    stringify: boolStringify\n};\nconst falseTag = {\n    identify: value => value === false,\n    default: true,\n    tag: 'tag:yaml.org,2002:bool',\n    test: /^(?:N|n|[Nn]o|NO|[Ff]alse|FALSE|[Oo]ff|OFF)$/i,\n    resolve: () => new Scalar.Scalar(false),\n    stringify: boolStringify\n};\n\nexports.falseTag = falseTag;\nexports.trueTag = trueTag;\n","'use strict';\n\nvar Scalar = require('../../nodes/Scalar.js');\nvar stringifyNumber = require('../../stringify/stringifyNumber.js');\n\nconst floatNaN = {\n    identify: value => typeof value === 'number',\n    default: true,\n    tag: 'tag:yaml.org,2002:float',\n    test: /^[-+]?\\.(?:inf|Inf|INF|nan|NaN|NAN)$/,\n    resolve: (str) => str.slice(-3).toLowerCase() === 'nan'\n        ? NaN\n        : str[0] === '-'\n            ? Number.NEGATIVE_INFINITY\n            : Number.POSITIVE_INFINITY,\n    stringify: stringifyNumber.stringifyNumber\n};\nconst floatExp = {\n    identify: value => typeof value === 'number',\n    default: true,\n    tag: 'tag:yaml.org,2002:float',\n    format: 'EXP',\n    test: /^[-+]?(?:[0-9][0-9_]*)?(?:\\.[0-9_]*)?[eE][-+]?[0-9]+$/,\n    resolve: (str) => parseFloat(str.replace(/_/g, '')),\n    stringify(node) {\n        const num = Number(node.value);\n        return isFinite(num) ? num.toExponential() : stringifyNumber.stringifyNumber(node);\n    }\n};\nconst float = {\n    identify: value => typeof value === 'number',\n    default: true,\n    tag: 'tag:yaml.org,2002:float',\n    test: /^[-+]?(?:[0-9][0-9_]*)?\\.[0-9_]*$/,\n    resolve(str) {\n        const node = new Scalar.Scalar(parseFloat(str.replace(/_/g, '')));\n        const dot = str.indexOf('.');\n        if (dot !== -1) {\n            const f = str.substring(dot + 1).replace(/_/g, '');\n            if (f[f.length - 1] === '0')\n                node.minFractionDigits = f.length;\n        }\n        return node;\n    },\n    stringify: stringifyNumber.stringifyNumber\n};\n\nexports.float = float;\nexports.floatExp = floatExp;\nexports.floatNaN = floatNaN;\n","'use strict';\n\nvar stringifyNumber = require('../../stringify/stringifyNumber.js');\n\nconst intIdentify = (value) => typeof value === 'bigint' || Number.isInteger(value);\nfunction intResolve(str, offset, radix, { intAsBigInt }) {\n    const sign = str[0];\n    if (sign === '-' || sign === '+')\n        offset += 1;\n    str = str.substring(offset).replace(/_/g, '');\n    if (intAsBigInt) {\n        switch (radix) {\n            case 2:\n                str = `0b${str}`;\n                break;\n            case 8:\n                str = `0o${str}`;\n                break;\n            case 16:\n                str = `0x${str}`;\n                break;\n        }\n        const n = BigInt(str);\n        return sign === '-' ? BigInt(-1) * n : n;\n    }\n    const n = parseInt(str, radix);\n    return sign === '-' ? -1 * n : n;\n}\nfunction intStringify(node, radix, prefix) {\n    const { value } = node;\n    if (intIdentify(value)) {\n        const str = value.toString(radix);\n        return value < 0 ? '-' + prefix + str.substr(1) : prefix + str;\n    }\n    return stringifyNumber.stringifyNumber(node);\n}\nconst intBin = {\n    identify: intIdentify,\n    default: true,\n    tag: 'tag:yaml.org,2002:int',\n    format: 'BIN',\n    test: /^[-+]?0b[0-1_]+$/,\n    resolve: (str, _onError, opt) => intResolve(str, 2, 2, opt),\n    stringify: node => intStringify(node, 2, '0b')\n};\nconst intOct = {\n    identify: intIdentify,\n    default: true,\n    tag: 'tag:yaml.org,2002:int',\n    format: 'OCT',\n    test: /^[-+]?0[0-7_]+$/,\n    resolve: (str, _onError, opt) => intResolve(str, 1, 8, opt),\n    stringify: node => intStringify(node, 8, '0')\n};\nconst int = {\n    identify: intIdentify,\n    default: true,\n    tag: 'tag:yaml.org,2002:int',\n    test: /^[-+]?[0-9][0-9_]*$/,\n    resolve: (str, _onError, opt) => intResolve(str, 0, 10, opt),\n    stringify: stringifyNumber.stringifyNumber\n};\nconst intHex = {\n    identify: intIdentify,\n    default: true,\n    tag: 'tag:yaml.org,2002:int',\n    format: 'HEX',\n    test: /^[-+]?0x[0-9a-fA-F_]+$/,\n    resolve: (str, _onError, opt) => intResolve(str, 2, 16, opt),\n    stringify: node => intStringify(node, 16, '0x')\n};\n\nexports.int = int;\nexports.intBin = intBin;\nexports.intHex = intHex;\nexports.intOct = intOct;\n","'use strict';\n\nvar YAMLSeq = require('../../nodes/YAMLSeq.js');\nvar toJS = require('../../nodes/toJS.js');\nvar Node = require('../../nodes/Node.js');\nvar YAMLMap = require('../../nodes/YAMLMap.js');\nvar pairs = require('./pairs.js');\n\nclass YAMLOMap extends YAMLSeq.YAMLSeq {\n    constructor() {\n        super();\n        this.add = YAMLMap.YAMLMap.prototype.add.bind(this);\n        this.delete = YAMLMap.YAMLMap.prototype.delete.bind(this);\n        this.get = YAMLMap.YAMLMap.prototype.get.bind(this);\n        this.has = YAMLMap.YAMLMap.prototype.has.bind(this);\n        this.set = YAMLMap.YAMLMap.prototype.set.bind(this);\n        this.tag = YAMLOMap.tag;\n    }\n    /**\n     * If `ctx` is given, the return type is actually `Map<unknown, unknown>`,\n     * but TypeScript won't allow widening the signature of a child method.\n     */\n    toJSON(_, ctx) {\n        if (!ctx)\n            return super.toJSON(_);\n        const map = new Map();\n        if (ctx?.onCreate)\n            ctx.onCreate(map);\n        for (const pair of this.items) {\n            let key, value;\n            if (Node.isPair(pair)) {\n                key = toJS.toJS(pair.key, '', ctx);\n                value = toJS.toJS(pair.value, key, ctx);\n            }\n            else {\n                key = toJS.toJS(pair, '', ctx);\n            }\n            if (map.has(key))\n                throw new Error('Ordered maps must not include duplicate keys');\n            map.set(key, value);\n        }\n        return map;\n    }\n}\nYAMLOMap.tag = 'tag:yaml.org,2002:omap';\nconst omap = {\n    collection: 'seq',\n    identify: value => value instanceof Map,\n    nodeClass: YAMLOMap,\n    default: false,\n    tag: 'tag:yaml.org,2002:omap',\n    resolve(seq, onError) {\n        const pairs$1 = pairs.resolvePairs(seq, onError);\n        const seenKeys = [];\n        for (const { key } of pairs$1.items) {\n            if (Node.isScalar(key)) {\n                if (seenKeys.includes(key.value)) {\n                    onError(`Ordered maps must not include duplicate keys: ${key.value}`);\n                }\n                else {\n                    seenKeys.push(key.value);\n                }\n            }\n        }\n        return Object.assign(new YAMLOMap(), pairs$1);\n    },\n    createNode(schema, iterable, ctx) {\n        const pairs$1 = pairs.createPairs(schema, iterable, ctx);\n        const omap = new YAMLOMap();\n        omap.items = pairs$1.items;\n        return omap;\n    }\n};\n\nexports.YAMLOMap = YAMLOMap;\nexports.omap = omap;\n","'use strict';\n\nvar Node = require('../../nodes/Node.js');\nvar Pair = require('../../nodes/Pair.js');\nvar Scalar = require('../../nodes/Scalar.js');\nvar YAMLSeq = require('../../nodes/YAMLSeq.js');\n\nfunction resolvePairs(seq, onError) {\n    if (Node.isSeq(seq)) {\n        for (let i = 0; i < seq.items.length; ++i) {\n            let item = seq.items[i];\n            if (Node.isPair(item))\n                continue;\n            else if (Node.isMap(item)) {\n                if (item.items.length > 1)\n                    onError('Each pair must have its own sequence indicator');\n                const pair = item.items[0] || new Pair.Pair(new Scalar.Scalar(null));\n                if (item.commentBefore)\n                    pair.key.commentBefore = pair.key.commentBefore\n                        ? `${item.commentBefore}\\n${pair.key.commentBefore}`\n                        : item.commentBefore;\n                if (item.comment) {\n                    const cn = pair.value ?? pair.key;\n                    cn.comment = cn.comment\n                        ? `${item.comment}\\n${cn.comment}`\n                        : item.comment;\n                }\n                item = pair;\n            }\n            seq.items[i] = Node.isPair(item) ? item : new Pair.Pair(item);\n        }\n    }\n    else\n        onError('Expected a sequence for this tag');\n    return seq;\n}\nfunction createPairs(schema, iterable, ctx) {\n    const { replacer } = ctx;\n    const pairs = new YAMLSeq.YAMLSeq(schema);\n    pairs.tag = 'tag:yaml.org,2002:pairs';\n    let i = 0;\n    if (iterable && Symbol.iterator in Object(iterable))\n        for (let it of iterable) {\n            if (typeof replacer === 'function')\n                it = replacer.call(iterable, String(i++), it);\n            let key, value;\n            if (Array.isArray(it)) {\n                if (it.length === 2) {\n                    key = it[0];\n                    value = it[1];\n                }\n                else\n                    throw new TypeError(`Expected [key, value] tuple: ${it}`);\n            }\n            else if (it && it instanceof Object) {\n                const keys = Object.keys(it);\n                if (keys.length === 1) {\n                    key = keys[0];\n                    value = it[key];\n                }\n                else\n                    throw new TypeError(`Expected { key: value } tuple: ${it}`);\n            }\n            else {\n                key = it;\n            }\n            pairs.items.push(Pair.createPair(key, value, ctx));\n        }\n    return pairs;\n}\nconst pairs = {\n    collection: 'seq',\n    default: false,\n    tag: 'tag:yaml.org,2002:pairs',\n    resolve: resolvePairs,\n    createNode: createPairs\n};\n\nexports.createPairs = createPairs;\nexports.pairs = pairs;\nexports.resolvePairs = resolvePairs;\n","'use strict';\n\nvar map = require('../common/map.js');\nvar _null = require('../common/null.js');\nvar seq = require('../common/seq.js');\nvar string = require('../common/string.js');\nvar binary = require('./binary.js');\nvar bool = require('./bool.js');\nvar float = require('./float.js');\nvar int = require('./int.js');\nvar omap = require('./omap.js');\nvar pairs = require('./pairs.js');\nvar set = require('./set.js');\nvar timestamp = require('./timestamp.js');\n\nconst schema = [\n    map.map,\n    seq.seq,\n    string.string,\n    _null.nullTag,\n    bool.trueTag,\n    bool.falseTag,\n    int.intBin,\n    int.intOct,\n    int.int,\n    int.intHex,\n    float.floatNaN,\n    float.floatExp,\n    float.float,\n    binary.binary,\n    omap.omap,\n    pairs.pairs,\n    set.set,\n    timestamp.intTime,\n    timestamp.floatTime,\n    timestamp.timestamp\n];\n\nexports.schema = schema;\n","'use strict';\n\nvar Node = require('../../nodes/Node.js');\nvar Pair = require('../../nodes/Pair.js');\nvar YAMLMap = require('../../nodes/YAMLMap.js');\n\nclass YAMLSet extends YAMLMap.YAMLMap {\n    constructor(schema) {\n        super(schema);\n        this.tag = YAMLSet.tag;\n    }\n    add(key) {\n        let pair;\n        if (Node.isPair(key))\n            pair = key;\n        else if (key &&\n            typeof key === 'object' &&\n            'key' in key &&\n            'value' in key &&\n            key.value === null)\n            pair = new Pair.Pair(key.key, null);\n        else\n            pair = new Pair.Pair(key, null);\n        const prev = YAMLMap.findPair(this.items, pair.key);\n        if (!prev)\n            this.items.push(pair);\n    }\n    /**\n     * If `keepPair` is `true`, returns the Pair matching `key`.\n     * Otherwise, returns the value of that Pair's key.\n     */\n    get(key, keepPair) {\n        const pair = YAMLMap.findPair(this.items, key);\n        return !keepPair && Node.isPair(pair)\n            ? Node.isScalar(pair.key)\n                ? pair.key.value\n                : pair.key\n            : pair;\n    }\n    set(key, value) {\n        if (typeof value !== 'boolean')\n            throw new Error(`Expected boolean value for set(key, value) in a YAML set, not ${typeof value}`);\n        const prev = YAMLMap.findPair(this.items, key);\n        if (prev && !value) {\n            this.items.splice(this.items.indexOf(prev), 1);\n        }\n        else if (!prev && value) {\n            this.items.push(new Pair.Pair(key));\n        }\n    }\n    toJSON(_, ctx) {\n        return super.toJSON(_, ctx, Set);\n    }\n    toString(ctx, onComment, onChompKeep) {\n        if (!ctx)\n            return JSON.stringify(this);\n        if (this.hasAllNullValues(true))\n            return super.toString(Object.assign({}, ctx, { allNullValues: true }), onComment, onChompKeep);\n        else\n            throw new Error('Set items must all have null values');\n    }\n}\nYAMLSet.tag = 'tag:yaml.org,2002:set';\nconst set = {\n    collection: 'map',\n    identify: value => value instanceof Set,\n    nodeClass: YAMLSet,\n    default: false,\n    tag: 'tag:yaml.org,2002:set',\n    resolve(map, onError) {\n        if (Node.isMap(map)) {\n            if (map.hasAllNullValues(true))\n                return Object.assign(new YAMLSet(), map);\n            else\n                onError('Set items must all have null values');\n        }\n        else\n            onError('Expected a mapping for this tag');\n        return map;\n    },\n    createNode(schema, iterable, ctx) {\n        const { replacer } = ctx;\n        const set = new YAMLSet(schema);\n        if (iterable && Symbol.iterator in Object(iterable))\n            for (let value of iterable) {\n                if (typeof replacer === 'function')\n                    value = replacer.call(iterable, value, value);\n                set.items.push(Pair.createPair(value, null, ctx));\n            }\n        return set;\n    }\n};\n\nexports.YAMLSet = YAMLSet;\nexports.set = set;\n","'use strict';\n\nvar stringifyNumber = require('../../stringify/stringifyNumber.js');\n\n/** Internal types handle bigint as number, because TS can't figure it out. */\nfunction parseSexagesimal(str, asBigInt) {\n    const sign = str[0];\n    const parts = sign === '-' || sign === '+' ? str.substring(1) : str;\n    const num = (n) => asBigInt ? BigInt(n) : Number(n);\n    const res = parts\n        .replace(/_/g, '')\n        .split(':')\n        .reduce((res, p) => res * num(60) + num(p), num(0));\n    return (sign === '-' ? num(-1) * res : res);\n}\n/**\n * hhhh:mm:ss.sss\n *\n * Internal types handle bigint as number, because TS can't figure it out.\n */\nfunction stringifySexagesimal(node) {\n    let { value } = node;\n    let num = (n) => n;\n    if (typeof value === 'bigint')\n        num = n => BigInt(n);\n    else if (isNaN(value) || !isFinite(value))\n        return stringifyNumber.stringifyNumber(node);\n    let sign = '';\n    if (value < 0) {\n        sign = '-';\n        value *= num(-1);\n    }\n    const _60 = num(60);\n    const parts = [value % _60]; // seconds, including ms\n    if (value < 60) {\n        parts.unshift(0); // at least one : is required\n    }\n    else {\n        value = (value - parts[0]) / _60;\n        parts.unshift(value % _60); // minutes\n        if (value >= 60) {\n            value = (value - parts[0]) / _60;\n            parts.unshift(value); // hours\n        }\n    }\n    return (sign +\n        parts\n            .map(n => (n < 10 ? '0' + String(n) : String(n)))\n            .join(':')\n            .replace(/000000\\d*$/, '') // % 60 may introduce error\n    );\n}\nconst intTime = {\n    identify: value => typeof value === 'bigint' || Number.isInteger(value),\n    default: true,\n    tag: 'tag:yaml.org,2002:int',\n    format: 'TIME',\n    test: /^[-+]?[0-9][0-9_]*(?::[0-5]?[0-9])+$/,\n    resolve: (str, _onError, { intAsBigInt }) => parseSexagesimal(str, intAsBigInt),\n    stringify: stringifySexagesimal\n};\nconst floatTime = {\n    identify: value => typeof value === 'number',\n    default: true,\n    tag: 'tag:yaml.org,2002:float',\n    format: 'TIME',\n    test: /^[-+]?[0-9][0-9_]*(?::[0-5]?[0-9])+\\.[0-9_]*$/,\n    resolve: str => parseSexagesimal(str, false),\n    stringify: stringifySexagesimal\n};\nconst timestamp = {\n    identify: value => value instanceof Date,\n    default: true,\n    tag: 'tag:yaml.org,2002:timestamp',\n    // If the time zone is omitted, the timestamp is assumed to be specified in UTC. The time part\n    // may be omitted altogether, resulting in a date format. In such a case, the time part is\n    // assumed to be 00:00:00Z (start of day, UTC).\n    test: RegExp('^([0-9]{4})-([0-9]{1,2})-([0-9]{1,2})' + // YYYY-Mm-Dd\n        '(?:' + // time is optional\n        '(?:t|T|[ \\\\t]+)' + // t | T | whitespace\n        '([0-9]{1,2}):([0-9]{1,2}):([0-9]{1,2}(\\\\.[0-9]+)?)' + // Hh:Mm:Ss(.ss)?\n        '(?:[ \\\\t]*(Z|[-+][012]?[0-9](?::[0-9]{2})?))?' + // Z | +5 | -03:30\n        ')?$'),\n    resolve(str) {\n        const match = str.match(timestamp.test);\n        if (!match)\n            throw new Error('!!timestamp expects a date, starting with yyyy-mm-dd');\n        const [, year, month, day, hour, minute, second] = match.map(Number);\n        const millisec = match[7] ? Number((match[7] + '00').substr(1, 3)) : 0;\n        let date = Date.UTC(year, month - 1, day, hour || 0, minute || 0, second || 0, millisec);\n        const tz = match[8];\n        if (tz && tz !== 'Z') {\n            let d = parseSexagesimal(tz, false);\n            if (Math.abs(d) < 30)\n                d *= 60;\n            date -= 60000 * d;\n        }\n        return new Date(date);\n    },\n    stringify: ({ value }) => value.toISOString().replace(/((T00:00)?:00)?\\.000Z$/, '')\n};\n\nexports.floatTime = floatTime;\nexports.intTime = intTime;\nexports.timestamp = timestamp;\n","'use strict';\n\nconst FOLD_FLOW = 'flow';\nconst FOLD_BLOCK = 'block';\nconst FOLD_QUOTED = 'quoted';\n/**\n * Tries to keep input at up to `lineWidth` characters, splitting only on spaces\n * not followed by newlines or spaces unless `mode` is `'quoted'`. Lines are\n * terminated with `\\n` and started with `indent`.\n */\nfunction foldFlowLines(text, indent, mode = 'flow', { indentAtStart, lineWidth = 80, minContentWidth = 20, onFold, onOverflow } = {}) {\n    if (!lineWidth || lineWidth < 0)\n        return text;\n    const endStep = Math.max(1 + minContentWidth, 1 + lineWidth - indent.length);\n    if (text.length <= endStep)\n        return text;\n    const folds = [];\n    const escapedFolds = {};\n    let end = lineWidth - indent.length;\n    if (typeof indentAtStart === 'number') {\n        if (indentAtStart > lineWidth - Math.max(2, minContentWidth))\n            folds.push(0);\n        else\n            end = lineWidth - indentAtStart;\n    }\n    let split = undefined;\n    let prev = undefined;\n    let overflow = false;\n    let i = -1;\n    let escStart = -1;\n    let escEnd = -1;\n    if (mode === FOLD_BLOCK) {\n        i = consumeMoreIndentedLines(text, i);\n        if (i !== -1)\n            end = i + endStep;\n    }\n    for (let ch; (ch = text[(i += 1)]);) {\n        if (mode === FOLD_QUOTED && ch === '\\\\') {\n            escStart = i;\n            switch (text[i + 1]) {\n                case 'x':\n                    i += 3;\n                    break;\n                case 'u':\n                    i += 5;\n                    break;\n                case 'U':\n                    i += 9;\n                    break;\n                default:\n                    i += 1;\n            }\n            escEnd = i;\n        }\n        if (ch === '\\n') {\n            if (mode === FOLD_BLOCK)\n                i = consumeMoreIndentedLines(text, i);\n            end = i + endStep;\n            split = undefined;\n        }\n        else {\n            if (ch === ' ' &&\n                prev &&\n                prev !== ' ' &&\n                prev !== '\\n' &&\n                prev !== '\\t') {\n                // space surrounded by non-space can be replaced with newline + indent\n                const next = text[i + 1];\n                if (next && next !== ' ' && next !== '\\n' && next !== '\\t')\n                    split = i;\n            }\n            if (i >= end) {\n                if (split) {\n                    folds.push(split);\n                    end = split + endStep;\n                    split = undefined;\n                }\n                else if (mode === FOLD_QUOTED) {\n                    // white-space collected at end may stretch past lineWidth\n                    while (prev === ' ' || prev === '\\t') {\n                        prev = ch;\n                        ch = text[(i += 1)];\n                        overflow = true;\n                    }\n                    // Account for newline escape, but don't break preceding escape\n                    const j = i > escEnd + 1 ? i - 2 : escStart - 1;\n                    // Bail out if lineWidth & minContentWidth are shorter than an escape string\n                    if (escapedFolds[j])\n                        return text;\n                    folds.push(j);\n                    escapedFolds[j] = true;\n                    end = j + endStep;\n                    split = undefined;\n                }\n                else {\n                    overflow = true;\n                }\n            }\n        }\n        prev = ch;\n    }\n    if (overflow && onOverflow)\n        onOverflow();\n    if (folds.length === 0)\n        return text;\n    if (onFold)\n        onFold();\n    let res = text.slice(0, folds[0]);\n    for (let i = 0; i < folds.length; ++i) {\n        const fold = folds[i];\n        const end = folds[i + 1] || text.length;\n        if (fold === 0)\n            res = `\\n${indent}${text.slice(0, end)}`;\n        else {\n            if (mode === FOLD_QUOTED && escapedFolds[fold])\n                res += `${text[fold]}\\\\`;\n            res += `\\n${indent}${text.slice(fold + 1, end)}`;\n        }\n    }\n    return res;\n}\n/**\n * Presumes `i + 1` is at the start of a line\n * @returns index of last newline in more-indented block\n */\nfunction consumeMoreIndentedLines(text, i) {\n    let ch = text[i + 1];\n    while (ch === ' ' || ch === '\\t') {\n        do {\n            ch = text[(i += 1)];\n        } while (ch && ch !== '\\n');\n        ch = text[i + 1];\n    }\n    return i;\n}\n\nexports.FOLD_BLOCK = FOLD_BLOCK;\nexports.FOLD_FLOW = FOLD_FLOW;\nexports.FOLD_QUOTED = FOLD_QUOTED;\nexports.foldFlowLines = foldFlowLines;\n","'use strict';\n\nvar anchors = require('../doc/anchors.js');\nvar Node = require('../nodes/Node.js');\nvar stringifyComment = require('./stringifyComment.js');\nvar stringifyString = require('./stringifyString.js');\n\nfunction createStringifyContext(doc, options) {\n    const opt = Object.assign({\n        blockQuote: true,\n        commentString: stringifyComment.stringifyComment,\n        defaultKeyType: null,\n        defaultStringType: 'PLAIN',\n        directives: null,\n        doubleQuotedAsJSON: false,\n        doubleQuotedMinMultiLineLength: 40,\n        falseStr: 'false',\n        indentSeq: true,\n        lineWidth: 80,\n        minContentWidth: 20,\n        nullStr: 'null',\n        simpleKeys: false,\n        singleQuote: null,\n        trueStr: 'true',\n        verifyAliasOrder: true\n    }, doc.schema.toStringOptions, options);\n    let inFlow;\n    switch (opt.collectionStyle) {\n        case 'block':\n            inFlow = false;\n            break;\n        case 'flow':\n            inFlow = true;\n            break;\n        default:\n            inFlow = null;\n    }\n    return {\n        anchors: new Set(),\n        doc,\n        indent: '',\n        indentStep: typeof opt.indent === 'number' ? ' '.repeat(opt.indent) : '  ',\n        inFlow,\n        options: opt\n    };\n}\nfunction getTagObject(tags, item) {\n    if (item.tag) {\n        const match = tags.filter(t => t.tag === item.tag);\n        if (match.length > 0)\n            return match.find(t => t.format === item.format) ?? match[0];\n    }\n    let tagObj = undefined;\n    let obj;\n    if (Node.isScalar(item)) {\n        obj = item.value;\n        const match = tags.filter(t => t.identify?.(obj));\n        tagObj =\n            match.find(t => t.format === item.format) ?? match.find(t => !t.format);\n    }\n    else {\n        obj = item;\n        tagObj = tags.find(t => t.nodeClass && obj instanceof t.nodeClass);\n    }\n    if (!tagObj) {\n        const name = obj?.constructor?.name ?? typeof obj;\n        throw new Error(`Tag not resolved for ${name} value`);\n    }\n    return tagObj;\n}\n// needs to be called before value stringifier to allow for circular anchor refs\nfunction stringifyProps(node, tagObj, { anchors: anchors$1, doc }) {\n    if (!doc.directives)\n        return '';\n    const props = [];\n    const anchor = (Node.isScalar(node) || Node.isCollection(node)) && node.anchor;\n    if (anchor && anchors.anchorIsValid(anchor)) {\n        anchors$1.add(anchor);\n        props.push(`&${anchor}`);\n    }\n    const tag = node.tag ? node.tag : tagObj.default ? null : tagObj.tag;\n    if (tag)\n        props.push(doc.directives.tagString(tag));\n    return props.join(' ');\n}\nfunction stringify(item, ctx, onComment, onChompKeep) {\n    if (Node.isPair(item))\n        return item.toString(ctx, onComment, onChompKeep);\n    if (Node.isAlias(item)) {\n        if (ctx.doc.directives)\n            return item.toString(ctx);\n        if (ctx.resolvedAliases?.has(item)) {\n            throw new TypeError(`Cannot stringify circular structure without alias nodes`);\n        }\n        else {\n            if (ctx.resolvedAliases)\n                ctx.resolvedAliases.add(item);\n            else\n                ctx.resolvedAliases = new Set([item]);\n            item = item.resolve(ctx.doc);\n        }\n    }\n    let tagObj = undefined;\n    const node = Node.isNode(item)\n        ? item\n        : ctx.doc.createNode(item, { onTagObj: o => (tagObj = o) });\n    if (!tagObj)\n        tagObj = getTagObject(ctx.doc.schema.tags, node);\n    const props = stringifyProps(node, tagObj, ctx);\n    if (props.length > 0)\n        ctx.indentAtStart = (ctx.indentAtStart ?? 0) + props.length + 1;\n    const str = typeof tagObj.stringify === 'function'\n        ? tagObj.stringify(node, ctx, onComment, onChompKeep)\n        : Node.isScalar(node)\n            ? stringifyString.stringifyString(node, ctx, onComment, onChompKeep)\n            : node.toString(ctx, onComment, onChompKeep);\n    if (!props)\n        return str;\n    return Node.isScalar(node) || str[0] === '{' || str[0] === '['\n        ? `${props} ${str}`\n        : `${props}\\n${ctx.indent}${str}`;\n}\n\nexports.createStringifyContext = createStringifyContext;\nexports.stringify = stringify;\n","'use strict';\n\nvar Collection = require('../nodes/Collection.js');\nvar Node = require('../nodes/Node.js');\nvar stringify = require('./stringify.js');\nvar stringifyComment = require('./stringifyComment.js');\n\nfunction stringifyCollection(collection, ctx, options) {\n    const flow = ctx.inFlow ?? collection.flow;\n    const stringify = flow ? stringifyFlowCollection : stringifyBlockCollection;\n    return stringify(collection, ctx, options);\n}\nfunction stringifyBlockCollection({ comment, items }, ctx, { blockItemPrefix, flowChars, itemIndent, onChompKeep, onComment }) {\n    const { indent, options: { commentString } } = ctx;\n    const itemCtx = Object.assign({}, ctx, { indent: itemIndent, type: null });\n    let chompKeep = false; // flag for the preceding node's status\n    const lines = [];\n    for (let i = 0; i < items.length; ++i) {\n        const item = items[i];\n        let comment = null;\n        if (Node.isNode(item)) {\n            if (!chompKeep && item.spaceBefore)\n                lines.push('');\n            addCommentBefore(ctx, lines, item.commentBefore, chompKeep);\n            if (item.comment)\n                comment = item.comment;\n        }\n        else if (Node.isPair(item)) {\n            const ik = Node.isNode(item.key) ? item.key : null;\n            if (ik) {\n                if (!chompKeep && ik.spaceBefore)\n                    lines.push('');\n                addCommentBefore(ctx, lines, ik.commentBefore, chompKeep);\n            }\n        }\n        chompKeep = false;\n        let str = stringify.stringify(item, itemCtx, () => (comment = null), () => (chompKeep = true));\n        if (comment)\n            str += stringifyComment.lineComment(str, itemIndent, commentString(comment));\n        if (chompKeep && comment)\n            chompKeep = false;\n        lines.push(blockItemPrefix + str);\n    }\n    let str;\n    if (lines.length === 0) {\n        str = flowChars.start + flowChars.end;\n    }\n    else {\n        str = lines[0];\n        for (let i = 1; i < lines.length; ++i) {\n            const line = lines[i];\n            str += line ? `\\n${indent}${line}` : '\\n';\n        }\n    }\n    if (comment) {\n        str += '\\n' + stringifyComment.indentComment(commentString(comment), indent);\n        if (onComment)\n            onComment();\n    }\n    else if (chompKeep && onChompKeep)\n        onChompKeep();\n    return str;\n}\nfunction stringifyFlowCollection({ comment, items }, ctx, { flowChars, itemIndent, onComment }) {\n    const { indent, indentStep, options: { commentString } } = ctx;\n    itemIndent += indentStep;\n    const itemCtx = Object.assign({}, ctx, {\n        indent: itemIndent,\n        inFlow: true,\n        type: null\n    });\n    let reqNewline = false;\n    let linesAtValue = 0;\n    const lines = [];\n    for (let i = 0; i < items.length; ++i) {\n        const item = items[i];\n        let comment = null;\n        if (Node.isNode(item)) {\n            if (item.spaceBefore)\n                lines.push('');\n            addCommentBefore(ctx, lines, item.commentBefore, false);\n            if (item.comment)\n                comment = item.comment;\n        }\n        else if (Node.isPair(item)) {\n            const ik = Node.isNode(item.key) ? item.key : null;\n            if (ik) {\n                if (ik.spaceBefore)\n                    lines.push('');\n                addCommentBefore(ctx, lines, ik.commentBefore, false);\n                if (ik.comment)\n                    reqNewline = true;\n            }\n            const iv = Node.isNode(item.value) ? item.value : null;\n            if (iv) {\n                if (iv.comment)\n                    comment = iv.comment;\n                if (iv.commentBefore)\n                    reqNewline = true;\n            }\n            else if (item.value == null && ik && ik.comment) {\n                comment = ik.comment;\n            }\n        }\n        if (comment)\n            reqNewline = true;\n        let str = stringify.stringify(item, itemCtx, () => (comment = null));\n        if (i < items.length - 1)\n            str += ',';\n        if (comment)\n            str += stringifyComment.lineComment(str, itemIndent, commentString(comment));\n        if (!reqNewline && (lines.length > linesAtValue || str.includes('\\n')))\n            reqNewline = true;\n        lines.push(str);\n        linesAtValue = lines.length;\n    }\n    let str;\n    const { start, end } = flowChars;\n    if (lines.length === 0) {\n        str = start + end;\n    }\n    else {\n        if (!reqNewline) {\n            const len = lines.reduce((sum, line) => sum + line.length + 2, 2);\n            reqNewline = len > Collection.Collection.maxFlowStringSingleLineLength;\n        }\n        if (reqNewline) {\n            str = start;\n            for (const line of lines)\n                str += line ? `\\n${indentStep}${indent}${line}` : '\\n';\n            str += `\\n${indent}${end}`;\n        }\n        else {\n            str = `${start} ${lines.join(' ')} ${end}`;\n        }\n    }\n    if (comment) {\n        str += stringifyComment.lineComment(str, commentString(comment), indent);\n        if (onComment)\n            onComment();\n    }\n    return str;\n}\nfunction addCommentBefore({ indent, options: { commentString } }, lines, comment, chompKeep) {\n    if (comment && chompKeep)\n        comment = comment.replace(/^\\n+/, '');\n    if (comment) {\n        const ic = stringifyComment.indentComment(commentString(comment), indent);\n        lines.push(ic.trimStart()); // Avoid double indent on first line\n    }\n}\n\nexports.stringifyCollection = stringifyCollection;\n","'use strict';\n\n/**\n * Stringifies a comment.\n *\n * Empty comment lines are left empty,\n * lines consisting of a single space are replaced by `#`,\n * and all other lines are prefixed with a `#`.\n */\nconst stringifyComment = (str) => str.replace(/^(?!$)(?: $)?/gm, '#');\nfunction indentComment(comment, indent) {\n    if (/^\\n+$/.test(comment))\n        return comment.substring(1);\n    return indent ? comment.replace(/^(?! *$)/gm, indent) : comment;\n}\nconst lineComment = (str, indent, comment) => str.endsWith('\\n')\n    ? indentComment(comment, indent)\n    : comment.includes('\\n')\n        ? '\\n' + indentComment(comment, indent)\n        : (str.endsWith(' ') ? '' : ' ') + comment;\n\nexports.indentComment = indentComment;\nexports.lineComment = lineComment;\nexports.stringifyComment = stringifyComment;\n","'use strict';\n\nvar Node = require('../nodes/Node.js');\nvar stringify = require('./stringify.js');\nvar stringifyComment = require('./stringifyComment.js');\n\nfunction stringifyDocument(doc, options) {\n    const lines = [];\n    let hasDirectives = options.directives === true;\n    if (options.directives !== false && doc.directives) {\n        const dir = doc.directives.toString(doc);\n        if (dir) {\n            lines.push(dir);\n            hasDirectives = true;\n        }\n        else if (doc.directives.docStart)\n            hasDirectives = true;\n    }\n    if (hasDirectives)\n        lines.push('---');\n    const ctx = stringify.createStringifyContext(doc, options);\n    const { commentString } = ctx.options;\n    if (doc.commentBefore) {\n        if (lines.length !== 1)\n            lines.unshift('');\n        const cs = commentString(doc.commentBefore);\n        lines.unshift(stringifyComment.indentComment(cs, ''));\n    }\n    let chompKeep = false;\n    let contentComment = null;\n    if (doc.contents) {\n        if (Node.isNode(doc.contents)) {\n            if (doc.contents.spaceBefore && hasDirectives)\n                lines.push('');\n            if (doc.contents.commentBefore) {\n                const cs = commentString(doc.contents.commentBefore);\n                lines.push(stringifyComment.indentComment(cs, ''));\n            }\n            // top-level block scalars need to be indented if followed by a comment\n            ctx.forceBlockIndent = !!doc.comment;\n            contentComment = doc.contents.comment;\n        }\n        const onChompKeep = contentComment ? undefined : () => (chompKeep = true);\n        let body = stringify.stringify(doc.contents, ctx, () => (contentComment = null), onChompKeep);\n        if (contentComment)\n            body += stringifyComment.lineComment(body, '', commentString(contentComment));\n        if ((body[0] === '|' || body[0] === '>') &&\n            lines[lines.length - 1] === '---') {\n            // Top-level block scalars with a preceding doc marker ought to use the\n            // same line for their header.\n            lines[lines.length - 1] = `--- ${body}`;\n        }\n        else\n            lines.push(body);\n    }\n    else {\n        lines.push(stringify.stringify(doc.contents, ctx));\n    }\n    if (doc.directives?.docEnd) {\n        if (doc.comment) {\n            const cs = commentString(doc.comment);\n            if (cs.includes('\\n')) {\n                lines.push('...');\n                lines.push(stringifyComment.indentComment(cs, ''));\n            }\n            else {\n                lines.push(`... ${cs}`);\n            }\n        }\n        else {\n            lines.push('...');\n        }\n    }\n    else {\n        let dc = doc.comment;\n        if (dc && chompKeep)\n            dc = dc.replace(/^\\n+/, '');\n        if (dc) {\n            if ((!chompKeep || contentComment) && lines[lines.length - 1] !== '')\n                lines.push('');\n            lines.push(stringifyComment.indentComment(commentString(dc), ''));\n        }\n    }\n    return lines.join('\\n') + '\\n';\n}\n\nexports.stringifyDocument = stringifyDocument;\n","'use strict';\n\nfunction stringifyNumber({ format, minFractionDigits, tag, value }) {\n    if (typeof value === 'bigint')\n        return String(value);\n    const num = typeof value === 'number' ? value : Number(value);\n    if (!isFinite(num))\n        return isNaN(num) ? '.nan' : num < 0 ? '-.inf' : '.inf';\n    let n = JSON.stringify(value);\n    if (!format &&\n        minFractionDigits &&\n        (!tag || tag === 'tag:yaml.org,2002:float') &&\n        /^\\d/.test(n)) {\n        let i = n.indexOf('.');\n        if (i < 0) {\n            i = n.length;\n            n += '.';\n        }\n        let d = minFractionDigits - (n.length - i - 1);\n        while (d-- > 0)\n            n += '0';\n    }\n    return n;\n}\n\nexports.stringifyNumber = stringifyNumber;\n","'use strict';\n\nvar Node = require('../nodes/Node.js');\nvar Scalar = require('../nodes/Scalar.js');\nvar stringify = require('./stringify.js');\nvar stringifyComment = require('./stringifyComment.js');\n\nfunction stringifyPair({ key, value }, ctx, onComment, onChompKeep) {\n    const { allNullValues, doc, indent, indentStep, options: { commentString, indentSeq, simpleKeys } } = ctx;\n    let keyComment = (Node.isNode(key) && key.comment) || null;\n    if (simpleKeys) {\n        if (keyComment) {\n            throw new Error('With simple keys, key nodes cannot have comments');\n        }\n        if (Node.isCollection(key)) {\n            const msg = 'With simple keys, collection cannot be used as a key value';\n            throw new Error(msg);\n        }\n    }\n    let explicitKey = !simpleKeys &&\n        (!key ||\n            (keyComment && value == null && !ctx.inFlow) ||\n            Node.isCollection(key) ||\n            (Node.isScalar(key)\n                ? key.type === Scalar.Scalar.BLOCK_FOLDED || key.type === Scalar.Scalar.BLOCK_LITERAL\n                : typeof key === 'object'));\n    ctx = Object.assign({}, ctx, {\n        allNullValues: false,\n        implicitKey: !explicitKey && (simpleKeys || !allNullValues),\n        indent: indent + indentStep\n    });\n    let keyCommentDone = false;\n    let chompKeep = false;\n    let str = stringify.stringify(key, ctx, () => (keyCommentDone = true), () => (chompKeep = true));\n    if (!explicitKey && !ctx.inFlow && str.length > 1024) {\n        if (simpleKeys)\n            throw new Error('With simple keys, single line scalar must not span more than 1024 characters');\n        explicitKey = true;\n    }\n    if (ctx.inFlow) {\n        if (allNullValues || value == null) {\n            if (keyCommentDone && onComment)\n                onComment();\n            return str === '' ? '?' : explicitKey ? `? ${str}` : str;\n        }\n    }\n    else if ((allNullValues && !simpleKeys) || (value == null && explicitKey)) {\n        str = `? ${str}`;\n        if (keyComment && !keyCommentDone) {\n            str += stringifyComment.lineComment(str, ctx.indent, commentString(keyComment));\n        }\n        else if (chompKeep && onChompKeep)\n            onChompKeep();\n        return str;\n    }\n    if (keyCommentDone)\n        keyComment = null;\n    if (explicitKey) {\n        if (keyComment)\n            str += stringifyComment.lineComment(str, ctx.indent, commentString(keyComment));\n        str = `? ${str}\\n${indent}:`;\n    }\n    else {\n        str = `${str}:`;\n        if (keyComment)\n            str += stringifyComment.lineComment(str, ctx.indent, commentString(keyComment));\n    }\n    let vcb = '';\n    let valueComment = null;\n    if (Node.isNode(value)) {\n        if (value.spaceBefore)\n            vcb = '\\n';\n        if (value.commentBefore) {\n            const cs = commentString(value.commentBefore);\n            vcb += `\\n${stringifyComment.indentComment(cs, ctx.indent)}`;\n        }\n        valueComment = value.comment;\n    }\n    else if (value && typeof value === 'object') {\n        value = doc.createNode(value);\n    }\n    ctx.implicitKey = false;\n    if (!explicitKey && !keyComment && Node.isScalar(value))\n        ctx.indentAtStart = str.length + 1;\n    chompKeep = false;\n    if (!indentSeq &&\n        indentStep.length >= 2 &&\n        !ctx.inFlow &&\n        !explicitKey &&\n        Node.isSeq(value) &&\n        !value.flow &&\n        !value.tag &&\n        !value.anchor) {\n        // If indentSeq === false, consider '- ' as part of indentation where possible\n        ctx.indent = ctx.indent.substr(2);\n    }\n    let valueCommentDone = false;\n    const valueStr = stringify.stringify(value, ctx, () => (valueCommentDone = true), () => (chompKeep = true));\n    let ws = ' ';\n    if (vcb || keyComment) {\n        if (valueStr === '' && !ctx.inFlow)\n            ws = vcb === '\\n' ? '\\n\\n' : vcb;\n        else\n            ws = `${vcb}\\n${ctx.indent}`;\n    }\n    else if (!explicitKey && Node.isCollection(value)) {\n        const flow = valueStr[0] === '[' || valueStr[0] === '{';\n        if (!flow || valueStr.includes('\\n'))\n            ws = `\\n${ctx.indent}`;\n    }\n    else if (valueStr === '' || valueStr[0] === '\\n')\n        ws = '';\n    str += ws + valueStr;\n    if (ctx.inFlow) {\n        if (valueCommentDone && onComment)\n            onComment();\n    }\n    else if (valueComment && !valueCommentDone) {\n        str += stringifyComment.lineComment(str, ctx.indent, commentString(valueComment));\n    }\n    else if (chompKeep && onChompKeep) {\n        onChompKeep();\n    }\n    return str;\n}\n\nexports.stringifyPair = stringifyPair;\n","'use strict';\n\nvar Scalar = require('../nodes/Scalar.js');\nvar foldFlowLines = require('./foldFlowLines.js');\n\nconst getFoldOptions = (ctx) => ({\n    indentAtStart: ctx.indentAtStart,\n    lineWidth: ctx.options.lineWidth,\n    minContentWidth: ctx.options.minContentWidth\n});\n// Also checks for lines starting with %, as parsing the output as YAML 1.1 will\n// presume that's starting a new document.\nconst containsDocumentMarker = (str) => /^(%|---|\\.\\.\\.)/m.test(str);\nfunction lineLengthOverLimit(str, lineWidth, indentLength) {\n    if (!lineWidth || lineWidth < 0)\n        return false;\n    const limit = lineWidth - indentLength;\n    const strLen = str.length;\n    if (strLen <= limit)\n        return false;\n    for (let i = 0, start = 0; i < strLen; ++i) {\n        if (str[i] === '\\n') {\n            if (i - start > limit)\n                return true;\n            start = i + 1;\n            if (strLen - start <= limit)\n                return false;\n        }\n    }\n    return true;\n}\nfunction doubleQuotedString(value, ctx) {\n    const json = JSON.stringify(value);\n    if (ctx.options.doubleQuotedAsJSON)\n        return json;\n    const { implicitKey } = ctx;\n    const minMultiLineLength = ctx.options.doubleQuotedMinMultiLineLength;\n    const indent = ctx.indent || (containsDocumentMarker(value) ? '  ' : '');\n    let str = '';\n    let start = 0;\n    for (let i = 0, ch = json[i]; ch; ch = json[++i]) {\n        if (ch === ' ' && json[i + 1] === '\\\\' && json[i + 2] === 'n') {\n            // space before newline needs to be escaped to not be folded\n            str += json.slice(start, i) + '\\\\ ';\n            i += 1;\n            start = i;\n            ch = '\\\\';\n        }\n        if (ch === '\\\\')\n            switch (json[i + 1]) {\n                case 'u':\n                    {\n                        str += json.slice(start, i);\n                        const code = json.substr(i + 2, 4);\n                        switch (code) {\n                            case '0000':\n                                str += '\\\\0';\n                                break;\n                            case '0007':\n                                str += '\\\\a';\n                                break;\n                            case '000b':\n                                str += '\\\\v';\n                                break;\n                            case '001b':\n                                str += '\\\\e';\n                                break;\n                            case '0085':\n                                str += '\\\\N';\n                                break;\n                            case '00a0':\n                                str += '\\\\_';\n                                break;\n                            case '2028':\n                                str += '\\\\L';\n                                break;\n                            case '2029':\n                                str += '\\\\P';\n                                break;\n                            default:\n                                if (code.substr(0, 2) === '00')\n                                    str += '\\\\x' + code.substr(2);\n                                else\n                                    str += json.substr(i, 6);\n                        }\n                        i += 5;\n                        start = i + 1;\n                    }\n                    break;\n                case 'n':\n                    if (implicitKey ||\n                        json[i + 2] === '\"' ||\n                        json.length < minMultiLineLength) {\n                        i += 1;\n                    }\n                    else {\n                        // folding will eat first newline\n                        str += json.slice(start, i) + '\\n\\n';\n                        while (json[i + 2] === '\\\\' &&\n                            json[i + 3] === 'n' &&\n                            json[i + 4] !== '\"') {\n                            str += '\\n';\n                            i += 2;\n                        }\n                        str += indent;\n                        // space after newline needs to be escaped to not be folded\n                        if (json[i + 2] === ' ')\n                            str += '\\\\';\n                        i += 1;\n                        start = i + 1;\n                    }\n                    break;\n                default:\n                    i += 1;\n            }\n    }\n    str = start ? str + json.slice(start) : json;\n    return implicitKey\n        ? str\n        : foldFlowLines.foldFlowLines(str, indent, foldFlowLines.FOLD_QUOTED, getFoldOptions(ctx));\n}\nfunction singleQuotedString(value, ctx) {\n    if (ctx.options.singleQuote === false ||\n        (ctx.implicitKey && value.includes('\\n')) ||\n        /[ \\t]\\n|\\n[ \\t]/.test(value) // single quoted string can't have leading or trailing whitespace around newline\n    )\n        return doubleQuotedString(value, ctx);\n    const indent = ctx.indent || (containsDocumentMarker(value) ? '  ' : '');\n    const res = \"'\" + value.replace(/'/g, \"''\").replace(/\\n+/g, `$&\\n${indent}`) + \"'\";\n    return ctx.implicitKey\n        ? res\n        : foldFlowLines.foldFlowLines(res, indent, foldFlowLines.FOLD_FLOW, getFoldOptions(ctx));\n}\nfunction quotedString(value, ctx) {\n    const { singleQuote } = ctx.options;\n    let qs;\n    if (singleQuote === false)\n        qs = doubleQuotedString;\n    else {\n        const hasDouble = value.includes('\"');\n        const hasSingle = value.includes(\"'\");\n        if (hasDouble && !hasSingle)\n            qs = singleQuotedString;\n        else if (hasSingle && !hasDouble)\n            qs = doubleQuotedString;\n        else\n            qs = singleQuote ? singleQuotedString : doubleQuotedString;\n    }\n    return qs(value, ctx);\n}\nfunction blockString({ comment, type, value }, ctx, onComment, onChompKeep) {\n    const { blockQuote, commentString, lineWidth } = ctx.options;\n    // 1. Block can't end in whitespace unless the last line is non-empty.\n    // 2. Strings consisting of only whitespace are best rendered explicitly.\n    if (!blockQuote || /\\n[\\t ]+$/.test(value) || /^\\s*$/.test(value)) {\n        return quotedString(value, ctx);\n    }\n    const indent = ctx.indent ||\n        (ctx.forceBlockIndent || containsDocumentMarker(value) ? '  ' : '');\n    const literal = blockQuote === 'literal'\n        ? true\n        : blockQuote === 'folded' || type === Scalar.Scalar.BLOCK_FOLDED\n            ? false\n            : type === Scalar.Scalar.BLOCK_LITERAL\n                ? true\n                : !lineLengthOverLimit(value, lineWidth, indent.length);\n    if (!value)\n        return literal ? '|\\n' : '>\\n';\n    // determine chomping from whitespace at value end\n    let chomp;\n    let endStart;\n    for (endStart = value.length; endStart > 0; --endStart) {\n        const ch = value[endStart - 1];\n        if (ch !== '\\n' && ch !== '\\t' && ch !== ' ')\n            break;\n    }\n    let end = value.substring(endStart);\n    const endNlPos = end.indexOf('\\n');\n    if (endNlPos === -1) {\n        chomp = '-'; // strip\n    }\n    else if (value === end || endNlPos !== end.length - 1) {\n        chomp = '+'; // keep\n        if (onChompKeep)\n            onChompKeep();\n    }\n    else {\n        chomp = ''; // clip\n    }\n    if (end) {\n        value = value.slice(0, -end.length);\n        if (end[end.length - 1] === '\\n')\n            end = end.slice(0, -1);\n        end = end.replace(/\\n+(?!\\n|$)/g, `$&${indent}`);\n    }\n    // determine indent indicator from whitespace at value start\n    let startWithSpace = false;\n    let startEnd;\n    let startNlPos = -1;\n    for (startEnd = 0; startEnd < value.length; ++startEnd) {\n        const ch = value[startEnd];\n        if (ch === ' ')\n            startWithSpace = true;\n        else if (ch === '\\n')\n            startNlPos = startEnd;\n        else\n            break;\n    }\n    let start = value.substring(0, startNlPos < startEnd ? startNlPos + 1 : startEnd);\n    if (start) {\n        value = value.substring(start.length);\n        start = start.replace(/\\n+/g, `$&${indent}`);\n    }\n    const indentSize = indent ? '2' : '1'; // root is at -1\n    let header = (literal ? '|' : '>') + (startWithSpace ? indentSize : '') + chomp;\n    if (comment) {\n        header += ' ' + commentString(comment.replace(/ ?[\\r\\n]+/g, ' '));\n        if (onComment)\n            onComment();\n    }\n    if (literal) {\n        value = value.replace(/\\n+/g, `$&${indent}`);\n        return `${header}\\n${indent}${start}${value}${end}`;\n    }\n    value = value\n        .replace(/\\n+/g, '\\n$&')\n        .replace(/(?:^|\\n)([\\t ].*)(?:([\\n\\t ]*)\\n(?![\\n\\t ]))?/g, '$1$2') // more-indented lines aren't folded\n        //                ^ more-ind. ^ empty     ^ capture next empty lines only at end of indent\n        .replace(/\\n+/g, `$&${indent}`);\n    const body = foldFlowLines.foldFlowLines(`${start}${value}${end}`, indent, foldFlowLines.FOLD_BLOCK, getFoldOptions(ctx));\n    return `${header}\\n${indent}${body}`;\n}\nfunction plainString(item, ctx, onComment, onChompKeep) {\n    const { type, value } = item;\n    const { actualString, implicitKey, indent, inFlow } = ctx;\n    if ((implicitKey && /[\\n[\\]{},]/.test(value)) ||\n        (inFlow && /[[\\]{},]/.test(value))) {\n        return quotedString(value, ctx);\n    }\n    if (!value ||\n        /^[\\n\\t ,[\\]{}#&*!|>'\"%@`]|^[?-]$|^[?-][ \\t]|[\\n:][ \\t]|[ \\t]\\n|[\\n\\t ]#|[\\n\\t :]$/.test(value)) {\n        // not allowed:\n        // - empty string, '-' or '?'\n        // - start with an indicator character (except [?:-]) or /[?-] /\n        // - '\\n ', ': ' or ' \\n' anywhere\n        // - '#' not preceded by a non-space char\n        // - end with ' ' or ':'\n        return implicitKey || inFlow || !value.includes('\\n')\n            ? quotedString(value, ctx)\n            : blockString(item, ctx, onComment, onChompKeep);\n    }\n    if (!implicitKey &&\n        !inFlow &&\n        type !== Scalar.Scalar.PLAIN &&\n        value.includes('\\n')) {\n        // Where allowed & type not set explicitly, prefer block style for multiline strings\n        return blockString(item, ctx, onComment, onChompKeep);\n    }\n    if (indent === '' && containsDocumentMarker(value)) {\n        ctx.forceBlockIndent = true;\n        return blockString(item, ctx, onComment, onChompKeep);\n    }\n    const str = value.replace(/\\n+/g, `$&\\n${indent}`);\n    // Verify that output will be parsed as a string, as e.g. plain numbers and\n    // booleans get parsed with those types in v1.2 (e.g. '42', 'true' & '0.9e-3'),\n    // and others in v1.1.\n    if (actualString) {\n        const test = (tag) => tag.default && tag.tag !== 'tag:yaml.org,2002:str' && tag.test?.test(str);\n        const { compat, tags } = ctx.doc.schema;\n        if (tags.some(test) || compat?.some(test))\n            return quotedString(value, ctx);\n    }\n    return implicitKey\n        ? str\n        : foldFlowLines.foldFlowLines(str, indent, foldFlowLines.FOLD_FLOW, getFoldOptions(ctx));\n}\nfunction stringifyString(item, ctx, onComment, onChompKeep) {\n    const { implicitKey, inFlow } = ctx;\n    const ss = typeof item.value === 'string'\n        ? item\n        : Object.assign({}, item, { value: String(item.value) });\n    let { type } = item;\n    if (type !== Scalar.Scalar.QUOTE_DOUBLE) {\n        // force double quotes on control characters & unpaired surrogates\n        if (/[\\x00-\\x08\\x0b-\\x1f\\x7f-\\x9f\\u{D800}-\\u{DFFF}]/u.test(ss.value))\n            type = Scalar.Scalar.QUOTE_DOUBLE;\n    }\n    const _stringify = (_type) => {\n        switch (_type) {\n            case Scalar.Scalar.BLOCK_FOLDED:\n            case Scalar.Scalar.BLOCK_LITERAL:\n                return implicitKey || inFlow\n                    ? quotedString(ss.value, ctx) // blocks are not valid inside flow containers\n                    : blockString(ss, ctx, onComment, onChompKeep);\n            case Scalar.Scalar.QUOTE_DOUBLE:\n                return doubleQuotedString(ss.value, ctx);\n            case Scalar.Scalar.QUOTE_SINGLE:\n                return singleQuotedString(ss.value, ctx);\n            case Scalar.Scalar.PLAIN:\n                return plainString(ss, ctx, onComment, onChompKeep);\n            default:\n                return null;\n        }\n    };\n    let res = _stringify(type);\n    if (res === null) {\n        const { defaultKeyType, defaultStringType } = ctx.options;\n        const t = (implicitKey && defaultKeyType) || defaultStringType;\n        res = _stringify(t);\n        if (res === null)\n            throw new Error(`Unsupported default string type ${t}`);\n    }\n    return res;\n}\n\nexports.stringifyString = stringifyString;\n","'use strict';\n\nvar Node = require('./nodes/Node.js');\n\nconst BREAK = Symbol('break visit');\nconst SKIP = Symbol('skip children');\nconst REMOVE = Symbol('remove node');\n/**\n * Apply a visitor to an AST node or document.\n *\n * Walks through the tree (depth-first) starting from `node`, calling a\n * `visitor` function with three arguments:\n *   - `key`: For sequence values and map `Pair`, the node's index in the\n *     collection. Within a `Pair`, `'key'` or `'value'`, correspondingly.\n *     `null` for the root node.\n *   - `node`: The current node.\n *   - `path`: The ancestry of the current node.\n *\n * The return value of the visitor may be used to control the traversal:\n *   - `undefined` (default): Do nothing and continue\n *   - `visit.SKIP`: Do not visit the children of this node, continue with next\n *     sibling\n *   - `visit.BREAK`: Terminate traversal completely\n *   - `visit.REMOVE`: Remove the current node, then continue with the next one\n *   - `Node`: Replace the current node, then continue by visiting it\n *   - `number`: While iterating the items of a sequence or map, set the index\n *     of the next step. This is useful especially if the index of the current\n *     node has changed.\n *\n * If `visitor` is a single function, it will be called with all values\n * encountered in the tree, including e.g. `null` values. Alternatively,\n * separate visitor functions may be defined for each `Map`, `Pair`, `Seq`,\n * `Alias` and `Scalar` node. To define the same visitor function for more than\n * one node type, use the `Collection` (map and seq), `Value` (map, seq & scalar)\n * and `Node` (alias, map, seq & scalar) targets. Of all these, only the most\n * specific defined one will be used for each node.\n */\nfunction visit(node, visitor) {\n    const visitor_ = initVisitor(visitor);\n    if (Node.isDocument(node)) {\n        const cd = visit_(null, node.contents, visitor_, Object.freeze([node]));\n        if (cd === REMOVE)\n            node.contents = null;\n    }\n    else\n        visit_(null, node, visitor_, Object.freeze([]));\n}\n// Without the `as symbol` casts, TS declares these in the `visit`\n// namespace using `var`, but then complains about that because\n// `unique symbol` must be `const`.\n/** Terminate visit traversal completely */\nvisit.BREAK = BREAK;\n/** Do not visit the children of the current node */\nvisit.SKIP = SKIP;\n/** Remove the current node */\nvisit.REMOVE = REMOVE;\nfunction visit_(key, node, visitor, path) {\n    const ctrl = callVisitor(key, node, visitor, path);\n    if (Node.isNode(ctrl) || Node.isPair(ctrl)) {\n        replaceNode(key, path, ctrl);\n        return visit_(key, ctrl, visitor, path);\n    }\n    if (typeof ctrl !== 'symbol') {\n        if (Node.isCollection(node)) {\n            path = Object.freeze(path.concat(node));\n            for (let i = 0; i < node.items.length; ++i) {\n                const ci = visit_(i, node.items[i], visitor, path);\n                if (typeof ci === 'number')\n                    i = ci - 1;\n                else if (ci === BREAK)\n                    return BREAK;\n                else if (ci === REMOVE) {\n                    node.items.splice(i, 1);\n                    i -= 1;\n                }\n            }\n        }\n        else if (Node.isPair(node)) {\n            path = Object.freeze(path.concat(node));\n            const ck = visit_('key', node.key, visitor, path);\n            if (ck === BREAK)\n                return BREAK;\n            else if (ck === REMOVE)\n                node.key = null;\n            const cv = visit_('value', node.value, visitor, path);\n            if (cv === BREAK)\n                return BREAK;\n            else if (cv === REMOVE)\n                node.value = null;\n        }\n    }\n    return ctrl;\n}\n/**\n * Apply an async visitor to an AST node or document.\n *\n * Walks through the tree (depth-first) starting from `node`, calling a\n * `visitor` function with three arguments:\n *   - `key`: For sequence values and map `Pair`, the node's index in the\n *     collection. Within a `Pair`, `'key'` or `'value'`, correspondingly.\n *     `null` for the root node.\n *   - `node`: The current node.\n *   - `path`: The ancestry of the current node.\n *\n * The return value of the visitor may be used to control the traversal:\n *   - `Promise`: Must resolve to one of the following values\n *   - `undefined` (default): Do nothing and continue\n *   - `visit.SKIP`: Do not visit the children of this node, continue with next\n *     sibling\n *   - `visit.BREAK`: Terminate traversal completely\n *   - `visit.REMOVE`: Remove the current node, then continue with the next one\n *   - `Node`: Replace the current node, then continue by visiting it\n *   - `number`: While iterating the items of a sequence or map, set the index\n *     of the next step. This is useful especially if the index of the current\n *     node has changed.\n *\n * If `visitor` is a single function, it will be called with all values\n * encountered in the tree, including e.g. `null` values. Alternatively,\n * separate visitor functions may be defined for each `Map`, `Pair`, `Seq`,\n * `Alias` and `Scalar` node. To define the same visitor function for more than\n * one node type, use the `Collection` (map and seq), `Value` (map, seq & scalar)\n * and `Node` (alias, map, seq & scalar) targets. Of all these, only the most\n * specific defined one will be used for each node.\n */\nasync function visitAsync(node, visitor) {\n    const visitor_ = initVisitor(visitor);\n    if (Node.isDocument(node)) {\n        const cd = await visitAsync_(null, node.contents, visitor_, Object.freeze([node]));\n        if (cd === REMOVE)\n            node.contents = null;\n    }\n    else\n        await visitAsync_(null, node, visitor_, Object.freeze([]));\n}\n// Without the `as symbol` casts, TS declares these in the `visit`\n// namespace using `var`, but then complains about that because\n// `unique symbol` must be `const`.\n/** Terminate visit traversal completely */\nvisitAsync.BREAK = BREAK;\n/** Do not visit the children of the current node */\nvisitAsync.SKIP = SKIP;\n/** Remove the current node */\nvisitAsync.REMOVE = REMOVE;\nasync function visitAsync_(key, node, visitor, path) {\n    const ctrl = await callVisitor(key, node, visitor, path);\n    if (Node.isNode(ctrl) || Node.isPair(ctrl)) {\n        replaceNode(key, path, ctrl);\n        return visitAsync_(key, ctrl, visitor, path);\n    }\n    if (typeof ctrl !== 'symbol') {\n        if (Node.isCollection(node)) {\n            path = Object.freeze(path.concat(node));\n            for (let i = 0; i < node.items.length; ++i) {\n                const ci = await visitAsync_(i, node.items[i], visitor, path);\n                if (typeof ci === 'number')\n                    i = ci - 1;\n                else if (ci === BREAK)\n                    return BREAK;\n                else if (ci === REMOVE) {\n                    node.items.splice(i, 1);\n                    i -= 1;\n                }\n            }\n        }\n        else if (Node.isPair(node)) {\n            path = Object.freeze(path.concat(node));\n            const ck = await visitAsync_('key', node.key, visitor, path);\n            if (ck === BREAK)\n                return BREAK;\n            else if (ck === REMOVE)\n                node.key = null;\n            const cv = await visitAsync_('value', node.value, visitor, path);\n            if (cv === BREAK)\n                return BREAK;\n            else if (cv === REMOVE)\n                node.value = null;\n        }\n    }\n    return ctrl;\n}\nfunction initVisitor(visitor) {\n    if (typeof visitor === 'object' &&\n        (visitor.Collection || visitor.Node || visitor.Value)) {\n        return Object.assign({\n            Alias: visitor.Node,\n            Map: visitor.Node,\n            Scalar: visitor.Node,\n            Seq: visitor.Node\n        }, visitor.Value && {\n            Map: visitor.Value,\n            Scalar: visitor.Value,\n            Seq: visitor.Value\n        }, visitor.Collection && {\n            Map: visitor.Collection,\n            Seq: visitor.Collection\n        }, visitor);\n    }\n    return visitor;\n}\nfunction callVisitor(key, node, visitor, path) {\n    if (typeof visitor === 'function')\n        return visitor(key, node, path);\n    if (Node.isMap(node))\n        return visitor.Map?.(key, node, path);\n    if (Node.isSeq(node))\n        return visitor.Seq?.(key, node, path);\n    if (Node.isPair(node))\n        return visitor.Pair?.(key, node, path);\n    if (Node.isScalar(node))\n        return visitor.Scalar?.(key, node, path);\n    if (Node.isAlias(node))\n        return visitor.Alias?.(key, node, path);\n    return undefined;\n}\nfunction replaceNode(key, path, node) {\n    const parent = path[path.length - 1];\n    if (Node.isCollection(parent)) {\n        parent.items[key] = node;\n    }\n    else if (Node.isPair(parent)) {\n        if (key === 'key')\n            parent.key = node;\n        else\n            parent.value = node;\n    }\n    else if (Node.isDocument(parent)) {\n        parent.contents = node;\n    }\n    else {\n        const pt = Node.isAlias(parent) ? 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console.log('Possible transitions:')\n      transitions.forEach((t) => {\n        console.log(`{ id: ${t.id}, name: ${t.name} } transitions issue to '${t.to.name}' status.`)\n      })\n\n      return\n    }\n\n    console.log(`Selected transition:${JSON.stringify(transitionToApply, null, 4)}`)\n\n    await this.Jira.transitionIssue(issueId, {\n      transition: {\n        id: transitionToApply.id,\n      },\n    })\n\n    const transitionedIssue = await this.Jira.getIssue(issueId)\n\n    // console.log(`transitionedIssue:${JSON.stringify(transitionedIssue, null, 4)}`)\n    console.log(`Changed ${issueId} status to : ${_.get(transitionedIssue, 'fields.status.name')} .`)\n    console.log(`Link to issue: ${this.config.baseUrl}/browse/${issueId}`)\n\n    return {}\n  }\n}\n","const { get } = require('lodash')\n\nconst serviceName = 'jira'\nconst { format } = require('url')\nconst client = require('./client')(serviceName)\n\nclass Jira {\n  constructor ({ baseUrl, token, email }) {\n    this.baseUrl = baseUrl\n    this.token = token\n    this.email = email\n  }\n\n  async getIssue (issueId, query = {}) {\n    const { fields = [], expand = [] } = query\n\n    try {\n      return this.fetch('getIssue', {\n        pathname: `/rest/api/2/issue/${issueId}`,\n        query: {\n          fields: fields.join(','),\n          expand: expand.join(','),\n        },\n      })\n    } catch (error) {\n      if (get(error, 'res.status') === 404) {\n        return\n      }\n\n      throw error\n    }\n  }\n\n  async getIssueTransitions (issueId) {\n    return this.fetch('getIssueTransitions', {\n      pathname: `/rest/api/2/issue/${issueId}/transitions`,\n    }, {\n      method: 'GET',\n    })\n  }\n\n  async transitionIssue (issueId, data) {\n    return this.fetch('transitionIssue', {\n      pathname: `/rest/api/2/issue/${issueId}/transitions`,\n    }, {\n      method: 'POST',\n      body: data,\n    })\n  }\n\n  async fetch (apiMethodName,\n    { host, pathname, query },\n    { method, body, headers = {} } = {}) {\n    const url = format({\n      host: host || this.baseUrl,\n      pathname,\n      query,\n    })\n\n    if (!method) {\n      method = 'GET'\n    }\n\n    if (headers['Content-Type'] === undefined) {\n      headers['Content-Type'] = 'application/json'\n    }\n\n    if (headers.Authorization === undefined) {\n      headers.Authorization = `Basic ${Buffer.from(`${this.email}:${this.token}`).toString('base64')}`\n    }\n\n    // strong check for undefined\n    // cause body variable can be 'false' boolean value\n    if (body && headers['Content-Type'] === 'application/json') {\n      body = JSON.stringify(body)\n    }\n\n    const state = {\n      req: {\n        method,\n        headers,\n        body,\n        url,\n      },\n    }\n\n    try {\n      await client(state, `${serviceName}:${apiMethodName}`)\n    } catch (error) {\n      const fields = {\n        originError: error,\n        source: 'jira',\n      }\n\n      delete state.req.headers\n\n      throw Object.assign(\n        new Error('Jira API error'),\n        state,\n        fields\n      )\n    }\n\n    return state.res.body\n  }\n}\n\nmodule.exports = Jira\n","const fetch = require('node-fetch')\n// const moment = require('moment')\n\nmodule.exports = serviceName => async (state, apiMethod = 'unknown') => {\n  // const startTime = moment.now()\n\n  const response = await fetch(state.req.url, state.req)\n\n  state.res = {\n    headers: response.headers.raw(),\n    status: response.status,\n  }\n\n  // const totalTime = moment.now() - startTime\n  // const tags = {\n  //   api_method: apiMethod,\n  //   method: state.req.method || 'GET',\n  //   response_code: response.status,\n  //   service: serviceName,\n  // }\n\n  state.res.body = await response.text()\n\n  const isJSON = (response.headers.get('content-type') || '').includes('application/json')\n\n  if (isJSON && state.res.body) {\n    state.res.body = JSON.parse(state.res.body)\n  }\n\n  if (!response.ok) {\n    throw new Error(response.statusText)\n  }\n\n  return state\n}\n","\"use strict\";\nvar __createBinding = (this && this.__createBinding) || (Object.create ? (function(o, m, k, k2) {\n    if (k2 === undefined) k2 = k;\n    Object.defineProperty(o, k2, { enumerable: true, get: function() { return m[k]; } });\n}) : (function(o, m, k, k2) {\n    if (k2 === undefined) k2 = k;\n    o[k2] = m[k];\n}));\nvar __setModuleDefault = (this && this.__setModuleDefault) || (Object.create ? (function(o, v) {\n    Object.defineProperty(o, \"default\", { enumerable: true, value: v });\n}) : function(o, v) {\n    o[\"default\"] = v;\n});\nvar __importStar = (this && this.__importStar) || function (mod) {\n    if (mod && mod.__esModule) return mod;\n    var result = {};\n    if (mod != null) for (var k in mod) if (k !== \"default\" && Object.hasOwnProperty.call(mod, k)) __createBinding(result, mod, k);\n    __setModuleDefault(result, mod);\n    return result;\n};\nObject.defineProperty(exports, \"__esModule\", { value: true });\nexports.issue = exports.issueCommand = void 0;\nconst os = __importStar(require(\"os\"));\nconst utils_1 = require(\"./utils\");\n/**\n * Commands\n *\n * Command Format:\n *   ::name key=value,key=value::message\n *\n * Examples:\n *   ::warning::This is the message\n *   ::set-env name=MY_VAR::some value\n */\nfunction issueCommand(command, properties, message) {\n    const cmd = new Command(command, properties, message);\n    process.stdout.write(cmd.toString() + os.EOL);\n}\nexports.issueCommand = issueCommand;\nfunction issue(name, message = '') {\n    issueCommand(name, {}, message);\n}\nexports.issue = issue;\nconst CMD_STRING = '::';\nclass Command {\n    constructor(command, properties, message) {\n        if (!command) {\n            command = 'missing.command';\n        }\n        this.command = command;\n        this.properties = properties;\n        this.message = message;\n    }\n    toString() {\n        let cmdStr = CMD_STRING + this.command;\n        if (this.properties && Object.keys(this.properties).length > 0) {\n            cmdStr += ' ';\n            let first = true;\n            for (const key in this.properties) {\n                if (this.properties.hasOwnProperty(key)) {\n                    const val = this.properties[key];\n                    if (val) {\n                        if (first) {\n                            first = false;\n                        }\n                        else {\n                            cmdStr += ',';\n                        }\n                        cmdStr += `${key}=${escapeProperty(val)}`;\n                    }\n                }\n            }\n        }\n        cmdStr += `${CMD_STRING}${escapeData(this.message)}`;\n        return cmdStr;\n    }\n}\nfunction escapeData(s) {\n    return utils_1.toCommandValue(s)\n        .replace(/%/g, '%25')\n        .replace(/\\r/g, '%0D')\n        .replace(/\\n/g, '%0A');\n}\nfunction escapeProperty(s) {\n    return utils_1.toCommandValue(s)\n        .replace(/%/g, '%25')\n        .replace(/\\r/g, '%0D')\n        .replace(/\\n/g, '%0A')\n        .replace(/:/g, '%3A')\n        .replace(/,/g, '%2C');\n}\n//# sourceMappingURL=command.js.map","\"use strict\";\nvar __createBinding = (this && this.__createBinding) || (Object.create ? (function(o, m, k, k2) {\n    if (k2 === undefined) k2 = k;\n    Object.defineProperty(o, k2, { enumerable: true, get: function() { return m[k]; } });\n}) : (function(o, m, k, k2) {\n    if (k2 === undefined) k2 = k;\n    o[k2] = m[k];\n}));\nvar __setModuleDefault = (this && this.__setModuleDefault) || (Object.create ? (function(o, v) {\n    Object.defineProperty(o, \"default\", { enumerable: true, value: v });\n}) : function(o, v) {\n    o[\"default\"] = v;\n});\nvar __importStar = (this && this.__importStar) || function (mod) {\n    if (mod && mod.__esModule) return mod;\n    var result = {};\n    if (mod != null) for (var k in mod) if (k !== \"default\" && Object.hasOwnProperty.call(mod, k)) __createBinding(result, mod, k);\n    __setModuleDefault(result, mod);\n    return result;\n};\nvar __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) {\n    function adopt(value) { return value instanceof P ? value : new P(function (resolve) { resolve(value); }); }\n    return new (P || (P = Promise))(function (resolve, reject) {\n        function fulfilled(value) { try { step(generator.next(value)); } catch (e) { reject(e); } }\n        function rejected(value) { try { step(generator[\"throw\"](value)); } catch (e) { reject(e); } }\n        function step(result) { result.done ? resolve(result.value) : adopt(result.value).then(fulfilled, rejected); }\n        step((generator = generator.apply(thisArg, _arguments || [])).next());\n    });\n};\nObject.defineProperty(exports, \"__esModule\", { value: true });\nexports.getIDToken = exports.getState = exports.saveState = exports.group = exports.endGroup = exports.startGroup = exports.info = exports.notice = exports.warning = exports.error = exports.debug = exports.isDebug = exports.setFailed = exports.setCommandEcho = exports.setOutput = exports.getBooleanInput = exports.getMultilineInput = exports.getInput = exports.addPath = exports.setSecret = exports.exportVariable = exports.ExitCode = void 0;\nconst command_1 = require(\"./command\");\nconst file_command_1 = require(\"./file-command\");\nconst utils_1 = require(\"./utils\");\nconst os = __importStar(require(\"os\"));\nconst path = __importStar(require(\"path\"));\nconst oidc_utils_1 = require(\"./oidc-utils\");\n/**\n * The code to exit an action\n */\nvar ExitCode;\n(function (ExitCode) {\n    /**\n     * A code indicating that the action was successful\n     */\n    ExitCode[ExitCode[\"Success\"] = 0] = \"Success\";\n    /**\n     * A code indicating that the action was a failure\n     */\n    ExitCode[ExitCode[\"Failure\"] = 1] = \"Failure\";\n})(ExitCode = exports.ExitCode || (exports.ExitCode = {}));\n//-----------------------------------------------------------------------\n// Variables\n//-----------------------------------------------------------------------\n/**\n * Sets env variable for this action and future actions in the job\n * @param name the name of the variable to set\n * @param val the value of the variable. Non-string values will be converted to a string via JSON.stringify\n */\n// eslint-disable-next-line @typescript-eslint/no-explicit-any\nfunction exportVariable(name, val) {\n    const convertedVal = utils_1.toCommandValue(val);\n    process.env[name] = convertedVal;\n    const filePath = process.env['GITHUB_ENV'] || '';\n    if (filePath) {\n        return file_command_1.issueFileCommand('ENV', file_command_1.prepareKeyValueMessage(name, val));\n    }\n    command_1.issueCommand('set-env', { name }, convertedVal);\n}\nexports.exportVariable = exportVariable;\n/**\n * Registers a secret which will get masked from logs\n * @param secret value of the secret\n */\nfunction setSecret(secret) {\n    command_1.issueCommand('add-mask', {}, secret);\n}\nexports.setSecret = setSecret;\n/**\n * Prepends inputPath to the PATH (for this action and future actions)\n * @param inputPath\n */\nfunction addPath(inputPath) {\n    const filePath = process.env['GITHUB_PATH'] || '';\n    if (filePath) {\n        file_command_1.issueFileCommand('PATH', inputPath);\n    }\n    else {\n        command_1.issueCommand('add-path', {}, inputPath);\n    }\n    process.env['PATH'] = `${inputPath}${path.delimiter}${process.env['PATH']}`;\n}\nexports.addPath = addPath;\n/**\n * Gets the value of an input.\n * Unless trimWhitespace is set to false in InputOptions, the value is also trimmed.\n * Returns an empty string if the value is not defined.\n *\n * @param     name     name of the input to get\n * @param     options  optional. See InputOptions.\n * @returns   string\n */\nfunction getInput(name, options) {\n    const val = process.env[`INPUT_${name.replace(/ /g, '_').toUpperCase()}`] || '';\n    if (options && options.required && !val) {\n        throw new Error(`Input required and not supplied: ${name}`);\n    }\n    if (options && options.trimWhitespace === false) {\n        return val;\n    }\n    return val.trim();\n}\nexports.getInput = getInput;\n/**\n * Gets the values of an multiline input.  Each value is also trimmed.\n *\n * @param     name     name of the input to get\n * @param     options  optional. See InputOptions.\n * @returns   string[]\n *\n */\nfunction getMultilineInput(name, options) {\n    const inputs = getInput(name, options)\n        .split('\\n')\n        .filter(x => x !== '');\n    if (options && options.trimWhitespace === false) {\n        return inputs;\n    }\n    return inputs.map(input => input.trim());\n}\nexports.getMultilineInput = getMultilineInput;\n/**\n * Gets the input value of the boolean type in the YAML 1.2 \"core schema\" specification.\n * Support boolean input list: `true | True | TRUE | false | False | FALSE` .\n * The return value is also in boolean type.\n * ref: https://yaml.org/spec/1.2/spec.html#id2804923\n *\n * @param     name     name of the input to get\n * @param     options  optional. See InputOptions.\n * @returns   boolean\n */\nfunction getBooleanInput(name, options) {\n    const trueValue = ['true', 'True', 'TRUE'];\n    const falseValue = ['false', 'False', 'FALSE'];\n    const val = getInput(name, options);\n    if (trueValue.includes(val))\n        return true;\n    if (falseValue.includes(val))\n        return false;\n    throw new TypeError(`Input does not meet YAML 1.2 \"Core Schema\" specification: ${name}\\n` +\n        `Support boolean input list: \\`true | True | TRUE | false | False | FALSE\\``);\n}\nexports.getBooleanInput = getBooleanInput;\n/**\n * Sets the value of an output.\n *\n * @param     name     name of the output to set\n * @param     value    value to store. Non-string values will be converted to a string via JSON.stringify\n */\n// eslint-disable-next-line @typescript-eslint/no-explicit-any\nfunction setOutput(name, value) {\n    const filePath = process.env['GITHUB_OUTPUT'] || '';\n    if (filePath) {\n        return file_command_1.issueFileCommand('OUTPUT', file_command_1.prepareKeyValueMessage(name, value));\n    }\n    process.stdout.write(os.EOL);\n    command_1.issueCommand('set-output', { name }, utils_1.toCommandValue(value));\n}\nexports.setOutput = setOutput;\n/**\n * Enables or disables the echoing of commands into stdout for the rest of the step.\n * Echoing is disabled by default if ACTIONS_STEP_DEBUG is not set.\n *\n */\nfunction setCommandEcho(enabled) {\n    command_1.issue('echo', enabled ? 'on' : 'off');\n}\nexports.setCommandEcho = setCommandEcho;\n//-----------------------------------------------------------------------\n// Results\n//-----------------------------------------------------------------------\n/**\n * Sets the action status to failed.\n * When the action exits it will be with an exit code of 1\n * @param message add error issue message\n */\nfunction setFailed(message) {\n    process.exitCode = ExitCode.Failure;\n    error(message);\n}\nexports.setFailed = setFailed;\n//-----------------------------------------------------------------------\n// Logging Commands\n//-----------------------------------------------------------------------\n/**\n * Gets whether Actions Step Debug is on or not\n */\nfunction isDebug() {\n    return process.env['RUNNER_DEBUG'] === '1';\n}\nexports.isDebug = isDebug;\n/**\n * Writes debug message to user log\n * @param message debug message\n */\nfunction debug(message) {\n    command_1.issueCommand('debug', {}, message);\n}\nexports.debug = debug;\n/**\n * Adds an error issue\n * @param message error issue message. Errors will be converted to string via toString()\n * @param properties optional properties to add to the annotation.\n */\nfunction error(message, properties = {}) {\n    command_1.issueCommand('error', utils_1.toCommandProperties(properties), message instanceof Error ? message.toString() : message);\n}\nexports.error = error;\n/**\n * Adds a warning issue\n * @param message warning issue message. Errors will be converted to string via toString()\n * @param properties optional properties to add to the annotation.\n */\nfunction warning(message, properties = {}) {\n    command_1.issueCommand('warning', utils_1.toCommandProperties(properties), message instanceof Error ? message.toString() : message);\n}\nexports.warning = warning;\n/**\n * Adds a notice issue\n * @param message notice issue message. Errors will be converted to string via toString()\n * @param properties optional properties to add to the annotation.\n */\nfunction notice(message, properties = {}) {\n    command_1.issueCommand('notice', utils_1.toCommandProperties(properties), message instanceof Error ? message.toString() : message);\n}\nexports.notice = notice;\n/**\n * Writes info to log with console.log.\n * @param message info message\n */\nfunction info(message) {\n    process.stdout.write(message + os.EOL);\n}\nexports.info = info;\n/**\n * Begin an output group.\n *\n * Output until the next `groupEnd` will be foldable in this group\n *\n * @param name The name of the output group\n */\nfunction startGroup(name) {\n    command_1.issue('group', name);\n}\nexports.startGroup = startGroup;\n/**\n * End an output group.\n */\nfunction endGroup() {\n    command_1.issue('endgroup');\n}\nexports.endGroup = endGroup;\n/**\n * Wrap an asynchronous function call in a group.\n *\n * Returns the same type as the function itself.\n *\n * @param name The name of the group\n * @param fn The function to wrap in the group\n */\nfunction group(name, fn) {\n    return __awaiter(this, void 0, void 0, function* () {\n        startGroup(name);\n        let result;\n        try {\n            result = yield fn();\n        }\n        finally {\n            endGroup();\n        }\n        return result;\n    });\n}\nexports.group = group;\n//-----------------------------------------------------------------------\n// Wrapper action state\n//-----------------------------------------------------------------------\n/**\n * Saves state for current action, the state can only be retrieved by this action's post job execution.\n *\n * @param     name     name of the state to store\n * @param     value    value to store. Non-string values will be converted to a string via JSON.stringify\n */\n// eslint-disable-next-line @typescript-eslint/no-explicit-any\nfunction saveState(name, value) {\n    const filePath = process.env['GITHUB_STATE'] || '';\n    if (filePath) {\n        return file_command_1.issueFileCommand('STATE', file_command_1.prepareKeyValueMessage(name, value));\n    }\n    command_1.issueCommand('save-state', { name }, utils_1.toCommandValue(value));\n}\nexports.saveState = saveState;\n/**\n * Gets the value of an state set by this action's main execution.\n *\n * @param     name     name of the state to get\n * @returns   string\n */\nfunction getState(name) {\n    return process.env[`STATE_${name}`] || '';\n}\nexports.getState = getState;\nfunction getIDToken(aud) {\n    return __awaiter(this, void 0, void 0, function* () {\n        return yield oidc_utils_1.OidcClient.getIDToken(aud);\n    });\n}\nexports.getIDToken = getIDToken;\n/**\n * Summary exports\n */\nvar summary_1 = require(\"./summary\");\nObject.defineProperty(exports, \"summary\", { enumerable: true, get: function () { return summary_1.summary; } });\n/**\n * @deprecated use core.summary\n */\nvar summary_2 = require(\"./summary\");\nObject.defineProperty(exports, \"markdownSummary\", { enumerable: true, get: function () { return summary_2.markdownSummary; } });\n/**\n * Path exports\n */\nvar path_utils_1 = require(\"./path-utils\");\nObject.defineProperty(exports, \"toPosixPath\", { enumerable: true, get: function () { return path_utils_1.toPosixPath; } });\nObject.defineProperty(exports, \"toWin32Path\", { enumerable: true, get: function () { return path_utils_1.toWin32Path; } });\nObject.defineProperty(exports, \"toPlatformPath\", { enumerable: true, get: function () { return path_utils_1.toPlatformPath; } });\n//# sourceMappingURL=core.js.map","\"use strict\";\n// For internal use, subject to change.\nvar __createBinding = (this && this.__createBinding) || (Object.create ? (function(o, m, k, k2) {\n    if (k2 === undefined) k2 = k;\n    Object.defineProperty(o, k2, { enumerable: true, get: function() { return m[k]; } });\n}) : (function(o, m, k, k2) {\n    if (k2 === undefined) k2 = k;\n    o[k2] = m[k];\n}));\nvar __setModuleDefault = (this && this.__setModuleDefault) || (Object.create ? (function(o, v) {\n    Object.defineProperty(o, \"default\", { enumerable: true, value: v });\n}) : function(o, v) {\n    o[\"default\"] = v;\n});\nvar __importStar = (this && this.__importStar) || function (mod) {\n    if (mod && mod.__esModule) return mod;\n    var result = {};\n    if (mod != null) for (var k in mod) if (k !== \"default\" && Object.hasOwnProperty.call(mod, k)) __createBinding(result, mod, k);\n    __setModuleDefault(result, mod);\n    return result;\n};\nObject.defineProperty(exports, \"__esModule\", { value: true });\nexports.prepareKeyValueMessage = exports.issueFileCommand = void 0;\n// We use any as a valid input type\n/* eslint-disable @typescript-eslint/no-explicit-any */\nconst fs = __importStar(require(\"fs\"));\nconst os = __importStar(require(\"os\"));\nconst uuid_1 = require(\"uuid\");\nconst utils_1 = require(\"./utils\");\nfunction issueFileCommand(command, message) {\n    const filePath = process.env[`GITHUB_${command}`];\n    if (!filePath) {\n        throw new Error(`Unable to find environment variable for file command ${command}`);\n    }\n    if (!fs.existsSync(filePath)) {\n        throw new Error(`Missing file at path: ${filePath}`);\n    }\n    fs.appendFileSync(filePath, `${utils_1.toCommandValue(message)}${os.EOL}`, {\n        encoding: 'utf8'\n    });\n}\nexports.issueFileCommand = issueFileCommand;\nfunction prepareKeyValueMessage(key, value) {\n    const delimiter = `ghadelimiter_${uuid_1.v4()}`;\n    const convertedValue = utils_1.toCommandValue(value);\n    // These should realistically never happen, but just in case someone finds a\n    // way to exploit uuid generation let's not allow keys or values that contain\n    // the delimiter.\n    if (key.includes(delimiter)) {\n        throw new Error(`Unexpected input: name should not contain the delimiter \"${delimiter}\"`);\n    }\n    if (convertedValue.includes(delimiter)) {\n        throw new Error(`Unexpected input: value should not contain the delimiter \"${delimiter}\"`);\n    }\n    return `${key}<<${delimiter}${os.EOL}${convertedValue}${os.EOL}${delimiter}`;\n}\nexports.prepareKeyValueMessage = prepareKeyValueMessage;\n//# sourceMappingURL=file-command.js.map","\"use strict\";\nvar __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) {\n    function adopt(value) { return value instanceof P ? value : new P(function (resolve) { resolve(value); }); }\n    return new (P || (P = Promise))(function (resolve, reject) {\n        function fulfilled(value) { try { step(generator.next(value)); } catch (e) { reject(e); } }\n        function rejected(value) { try { step(generator[\"throw\"](value)); } catch (e) { reject(e); } }\n        function step(result) { result.done ? resolve(result.value) : adopt(result.value).then(fulfilled, rejected); }\n        step((generator = generator.apply(thisArg, _arguments || [])).next());\n    });\n};\nObject.defineProperty(exports, \"__esModule\", { value: true });\nexports.OidcClient = void 0;\nconst http_client_1 = require(\"@actions/http-client\");\nconst auth_1 = require(\"@actions/http-client/lib/auth\");\nconst core_1 = require(\"./core\");\nclass OidcClient {\n    static createHttpClient(allowRetry = true, maxRetry = 10) {\n        const requestOptions = {\n            allowRetries: allowRetry,\n            maxRetries: maxRetry\n        };\n        return new http_client_1.HttpClient('actions/oidc-client', [new auth_1.BearerCredentialHandler(OidcClient.getRequestToken())], requestOptions);\n    }\n    static getRequestToken() {\n        const token = process.env['ACTIONS_ID_TOKEN_REQUEST_TOKEN'];\n        if (!token) {\n            throw new Error('Unable to get ACTIONS_ID_TOKEN_REQUEST_TOKEN env variable');\n        }\n        return token;\n    }\n    static getIDTokenUrl() {\n        const runtimeUrl = process.env['ACTIONS_ID_TOKEN_REQUEST_URL'];\n        if (!runtimeUrl) {\n            throw new Error('Unable to get ACTIONS_ID_TOKEN_REQUEST_URL env variable');\n        }\n        return runtimeUrl;\n    }\n    static getCall(id_token_url) {\n        var _a;\n        return __awaiter(this, void 0, void 0, function* () {\n            const httpclient = OidcClient.createHttpClient();\n            const res = yield httpclient\n                .getJson(id_token_url)\n                .catch(error => {\n                throw new Error(`Failed to get ID Token. \\n \n        Error Code : ${error.statusCode}\\n \n        Error Message: ${error.result.message}`);\n            });\n            const id_token = (_a = res.result) === null || _a === void 0 ? void 0 : _a.value;\n            if (!id_token) {\n                throw new Error('Response json body do not have ID Token field');\n            }\n            return id_token;\n        });\n    }\n    static getIDToken(audience) {\n        return __awaiter(this, void 0, void 0, function* () {\n            try {\n                // New ID Token is requested from action service\n                let id_token_url = OidcClient.getIDTokenUrl();\n                if (audience) {\n                    const encodedAudience = encodeURIComponent(audience);\n                    id_token_url = `${id_token_url}&audience=${encodedAudience}`;\n                }\n                core_1.debug(`ID token url is ${id_token_url}`);\n                const id_token = yield OidcClient.getCall(id_token_url);\n                core_1.setSecret(id_token);\n                return id_token;\n            }\n            catch (error) {\n                throw new Error(`Error message: ${error.message}`);\n            }\n        });\n    }\n}\nexports.OidcClient = OidcClient;\n//# sourceMappingURL=oidc-utils.js.map","\"use strict\";\nvar __createBinding = (this && this.__createBinding) || (Object.create ? (function(o, m, k, k2) {\n    if (k2 === undefined) k2 = k;\n    Object.defineProperty(o, k2, { enumerable: true, get: function() { return m[k]; } });\n}) : (function(o, m, k, k2) {\n    if (k2 === undefined) k2 = k;\n    o[k2] = m[k];\n}));\nvar __setModuleDefault = (this && this.__setModuleDefault) || (Object.create ? (function(o, v) {\n    Object.defineProperty(o, \"default\", { enumerable: true, value: v });\n}) : function(o, v) {\n    o[\"default\"] = v;\n});\nvar __importStar = (this && this.__importStar) || function (mod) {\n    if (mod && mod.__esModule) return mod;\n    var result = {};\n    if (mod != null) for (var k in mod) if (k !== \"default\" && Object.hasOwnProperty.call(mod, k)) __createBinding(result, mod, k);\n    __setModuleDefault(result, mod);\n    return result;\n};\nObject.defineProperty(exports, \"__esModule\", { value: true });\nexports.toPlatformPath = exports.toWin32Path = exports.toPosixPath = void 0;\nconst path = __importStar(require(\"path\"));\n/**\n * toPosixPath converts the given path to the posix form. On Windows, \\\\ will be\n * replaced with /.\n *\n * @param pth. Path to transform.\n * @return string Posix path.\n */\nfunction toPosixPath(pth) {\n    return pth.replace(/[\\\\]/g, '/');\n}\nexports.toPosixPath = toPosixPath;\n/**\n * toWin32Path converts the given path to the win32 form. On Linux, / will be\n * replaced with \\\\.\n *\n * @param pth. Path to transform.\n * @return string Win32 path.\n */\nfunction toWin32Path(pth) {\n    return pth.replace(/[/]/g, '\\\\');\n}\nexports.toWin32Path = toWin32Path;\n/**\n * toPlatformPath converts the given path to a platform-specific path. It does\n * this by replacing instances of / and \\ with the platform-specific path\n * separator.\n *\n * @param pth The path to platformize.\n * @return string The platform-specific path.\n */\nfunction toPlatformPath(pth) {\n    return pth.replace(/[/\\\\]/g, path.sep);\n}\nexports.toPlatformPath = toPlatformPath;\n//# sourceMappingURL=path-utils.js.map","\"use strict\";\nvar __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) {\n    function adopt(value) { return value instanceof P ? value : new P(function (resolve) { resolve(value); }); }\n    return new (P || (P = Promise))(function (resolve, reject) {\n        function fulfilled(value) { try { step(generator.next(value)); } catch (e) { reject(e); } }\n        function rejected(value) { try { step(generator[\"throw\"](value)); } catch (e) { reject(e); } }\n        function step(result) { result.done ? resolve(result.value) : adopt(result.value).then(fulfilled, rejected); }\n        step((generator = generator.apply(thisArg, _arguments || [])).next());\n    });\n};\nObject.defineProperty(exports, \"__esModule\", { value: true });\nexports.summary = exports.markdownSummary = exports.SUMMARY_DOCS_URL = exports.SUMMARY_ENV_VAR = void 0;\nconst os_1 = require(\"os\");\nconst fs_1 = require(\"fs\");\nconst { access, appendFile, writeFile } = fs_1.promises;\nexports.SUMMARY_ENV_VAR = 'GITHUB_STEP_SUMMARY';\nexports.SUMMARY_DOCS_URL = 'https://docs.github.com/actions/using-workflows/workflow-commands-for-github-actions#adding-a-job-summary';\nclass Summary {\n    constructor() {\n        this._buffer = '';\n    }\n    /**\n     * Finds the summary file path from the environment, rejects if env var is not found or file does not exist\n     * Also checks r/w permissions.\n     *\n     * @returns step summary file path\n     */\n    filePath() {\n        return __awaiter(this, void 0, void 0, function* () {\n            if (this._filePath) {\n                return this._filePath;\n            }\n            const pathFromEnv = process.env[exports.SUMMARY_ENV_VAR];\n            if (!pathFromEnv) {\n                throw new Error(`Unable to find environment variable for $${exports.SUMMARY_ENV_VAR}. Check if your runtime environment supports job summaries.`);\n            }\n            try {\n                yield access(pathFromEnv, fs_1.constants.R_OK | fs_1.constants.W_OK);\n            }\n            catch (_a) {\n                throw new Error(`Unable to access summary file: '${pathFromEnv}'. Check if the file has correct read/write permissions.`);\n            }\n            this._filePath = pathFromEnv;\n            return this._filePath;\n        });\n    }\n    /**\n     * Wraps content in an HTML tag, adding any HTML attributes\n     *\n     * @param {string} tag HTML tag to wrap\n     * @param {string | null} content content within the tag\n     * @param {[attribute: string]: string} attrs key-value list of HTML attributes to add\n     *\n     * @returns {string} content wrapped in HTML element\n     */\n    wrap(tag, content, attrs = {}) {\n        const htmlAttrs = Object.entries(attrs)\n            .map(([key, value]) => ` ${key}=\"${value}\"`)\n            .join('');\n        if (!content) {\n            return `<${tag}${htmlAttrs}>`;\n        }\n        return `<${tag}${htmlAttrs}>${content}</${tag}>`;\n    }\n    /**\n     * Writes text in the buffer to the summary buffer file and empties buffer. Will append by default.\n     *\n     * @param {SummaryWriteOptions} [options] (optional) options for write operation\n     *\n     * @returns {Promise<Summary>} summary instance\n     */\n    write(options) {\n        return __awaiter(this, void 0, void 0, function* () {\n            const overwrite = !!(options === null || options === void 0 ? void 0 : options.overwrite);\n            const filePath = yield this.filePath();\n            const writeFunc = overwrite ? writeFile : appendFile;\n            yield writeFunc(filePath, this._buffer, { encoding: 'utf8' });\n            return this.emptyBuffer();\n        });\n    }\n    /**\n     * Clears the summary buffer and wipes the summary file\n     *\n     * @returns {Summary} summary instance\n     */\n    clear() {\n        return __awaiter(this, void 0, void 0, function* () {\n            return this.emptyBuffer().write({ overwrite: true });\n        });\n    }\n    /**\n     * Returns the current summary buffer as a string\n     *\n     * @returns {string} string of summary buffer\n     */\n    stringify() {\n        return this._buffer;\n    }\n    /**\n     * If the summary buffer is empty\n     *\n     * @returns {boolen} true if the buffer is empty\n     */\n    isEmptyBuffer() {\n        return this._buffer.length === 0;\n    }\n    /**\n     * Resets the summary buffer without writing to summary file\n     *\n     * @returns {Summary} summary instance\n     */\n    emptyBuffer() {\n        this._buffer = '';\n        return this;\n    }\n    /**\n     * Adds raw text to the summary buffer\n     *\n     * @param {string} text content to add\n     * @param {boolean} [addEOL=false] (optional) append an EOL to the raw text (default: false)\n     *\n     * @returns {Summary} summary instance\n     */\n    addRaw(text, addEOL = false) {\n        this._buffer += text;\n        return addEOL ? this.addEOL() : this;\n    }\n    /**\n     * Adds the operating system-specific end-of-line marker to the buffer\n     *\n     * @returns {Summary} summary instance\n     */\n    addEOL() {\n        return this.addRaw(os_1.EOL);\n    }\n    /**\n     * Adds an HTML codeblock to the summary buffer\n     *\n     * @param {string} code content to render within fenced code block\n     * @param {string} lang (optional) language to syntax highlight code\n     *\n     * @returns {Summary} summary instance\n     */\n    addCodeBlock(code, lang) {\n        const attrs = Object.assign({}, (lang && { lang }));\n        const element = this.wrap('pre', this.wrap('code', code), attrs);\n        return this.addRaw(element).addEOL();\n    }\n    /**\n     * Adds an HTML list to the summary buffer\n     *\n     * @param {string[]} items list of items to render\n     * @param {boolean} [ordered=false] (optional) if the rendered list should be ordered or not (default: false)\n     *\n     * @returns {Summary} summary instance\n     */\n    addList(items, ordered = false) {\n        const tag = ordered ? 'ol' : 'ul';\n        const listItems = items.map(item => this.wrap('li', item)).join('');\n        const element = this.wrap(tag, listItems);\n        return this.addRaw(element).addEOL();\n    }\n    /**\n     * Adds an HTML table to the summary buffer\n     *\n     * @param {SummaryTableCell[]} rows table rows\n     *\n     * @returns {Summary} summary instance\n     */\n    addTable(rows) {\n        const tableBody = rows\n            .map(row => {\n            const cells = row\n                .map(cell => {\n                if (typeof cell === 'string') {\n                    return this.wrap('td', cell);\n                }\n                const { header, data, colspan, rowspan } = cell;\n                const tag = header ? 'th' : 'td';\n                const attrs = Object.assign(Object.assign({}, (colspan && { colspan })), (rowspan && { rowspan }));\n                return this.wrap(tag, data, attrs);\n            })\n                .join('');\n            return this.wrap('tr', cells);\n        })\n            .join('');\n        const element = this.wrap('table', tableBody);\n        return this.addRaw(element).addEOL();\n    }\n    /**\n     * Adds a collapsable HTML details element to the summary buffer\n     *\n     * @param {string} label text for the closed state\n     * @param {string} content collapsable content\n     *\n     * @returns {Summary} summary instance\n     */\n    addDetails(label, content) {\n        const element = this.wrap('details', this.wrap('summary', label) + content);\n        return this.addRaw(element).addEOL();\n    }\n    /**\n     * Adds an HTML image tag to the summary buffer\n     *\n     * @param {string} src path to the image you to embed\n     * @param {string} alt text description of the image\n     * @param {SummaryImageOptions} options (optional) addition image attributes\n     *\n     * @returns {Summary} summary instance\n     */\n    addImage(src, alt, options) {\n        const { width, height } = options || {};\n        const attrs = Object.assign(Object.assign({}, (width && { width })), (height && { height }));\n        const element = this.wrap('img', null, Object.assign({ src, alt }, attrs));\n        return this.addRaw(element).addEOL();\n    }\n    /**\n     * Adds an HTML section heading element\n     *\n     * @param {string} text heading text\n     * @param {number | string} [level=1] (optional) the heading level, default: 1\n     *\n     * @returns {Summary} summary instance\n     */\n    addHeading(text, level) {\n        const tag = `h${level}`;\n        const allowedTag = ['h1', 'h2', 'h3', 'h4', 'h5', 'h6'].includes(tag)\n            ? tag\n            : 'h1';\n        const element = this.wrap(allowedTag, text);\n        return this.addRaw(element).addEOL();\n    }\n    /**\n     * Adds an HTML thematic break (<hr>) to the summary buffer\n     *\n     * @returns {Summary} summary instance\n     */\n    addSeparator() {\n        const element = this.wrap('hr', null);\n        return this.addRaw(element).addEOL();\n    }\n    /**\n     * Adds an HTML line break (<br>) to the summary buffer\n     *\n     * @returns {Summary} summary instance\n     */\n    addBreak() {\n        const element = this.wrap('br', null);\n        return this.addRaw(element).addEOL();\n    }\n    /**\n     * Adds an HTML blockquote to the summary buffer\n     *\n     * @param {string} text quote text\n     * @param {string} cite (optional) citation url\n     *\n     * @returns {Summary} summary instance\n     */\n    addQuote(text, cite) {\n        const attrs = Object.assign({}, (cite && { cite }));\n        const element = this.wrap('blockquote', text, attrs);\n        return this.addRaw(element).addEOL();\n    }\n    /**\n     * Adds an HTML anchor tag to the summary buffer\n     *\n     * @param {string} text link text/content\n     * @param {string} href hyperlink\n     *\n     * @returns {Summary} summary instance\n     */\n    addLink(text, href) {\n        const element = this.wrap('a', text, { href });\n        return this.addRaw(element).addEOL();\n    }\n}\nconst _summary = new Summary();\n/**\n * @deprecated use `core.summary`\n */\nexports.markdownSummary = _summary;\nexports.summary = _summary;\n//# sourceMappingURL=summary.js.map","\"use strict\";\n// We use any as a valid input type\n/* eslint-disable @typescript-eslint/no-explicit-any */\nObject.defineProperty(exports, \"__esModule\", { value: true });\nexports.toCommandProperties = exports.toCommandValue = void 0;\n/**\n * Sanitizes an input into a string so it can be passed into issueCommand safely\n * @param input input to sanitize into a string\n */\nfunction toCommandValue(input) {\n    if (input === null || input === undefined) {\n        return '';\n    }\n    else if (typeof input === 'string' || input instanceof String) {\n        return input;\n    }\n    return JSON.stringify(input);\n}\nexports.toCommandValue = toCommandValue;\n/**\n *\n * @param annotationProperties\n * @returns The command properties to send with the actual annotation command\n * See IssueCommandProperties: https://github.com/actions/runner/blob/main/src/Runner.Worker/ActionCommandManager.cs#L646\n */\nfunction toCommandProperties(annotationProperties) {\n    if (!Object.keys(annotationProperties).length) {\n        return {};\n    }\n    return {\n        title: annotationProperties.title,\n        file: annotationProperties.file,\n        line: annotationProperties.startLine,\n        endLine: annotationProperties.endLine,\n        col: annotationProperties.startColumn,\n        endColumn: annotationProperties.endColumn\n    };\n}\nexports.toCommandProperties = toCommandProperties;\n//# sourceMappingURL=utils.js.map","\"use strict\";\nvar __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) {\n    function adopt(value) { return value instanceof P ? value : new P(function (resolve) { resolve(value); }); }\n    return new (P || (P = Promise))(function (resolve, reject) {\n        function fulfilled(value) { try { step(generator.next(value)); } catch (e) { reject(e); } }\n        function rejected(value) { try { step(generator[\"throw\"](value)); } catch (e) { reject(e); } }\n        function step(result) { result.done ? resolve(result.value) : adopt(result.value).then(fulfilled, rejected); }\n        step((generator = generator.apply(thisArg, _arguments || [])).next());\n    });\n};\nObject.defineProperty(exports, \"__esModule\", { value: true });\nexports.PersonalAccessTokenCredentialHandler = exports.BearerCredentialHandler = exports.BasicCredentialHandler = void 0;\nclass BasicCredentialHandler {\n    constructor(username, password) {\n        this.username = username;\n        this.password = password;\n    }\n    prepareRequest(options) {\n        if (!options.headers) {\n            throw Error('The request has no headers');\n        }\n        options.headers['Authorization'] = `Basic ${Buffer.from(`${this.username}:${this.password}`).toString('base64')}`;\n    }\n    // This handler cannot handle 401\n    canHandleAuthentication() {\n        return false;\n    }\n    handleAuthentication() {\n        return __awaiter(this, void 0, void 0, function* () {\n            throw new Error('not implemented');\n        });\n    }\n}\nexports.BasicCredentialHandler = BasicCredentialHandler;\nclass BearerCredentialHandler {\n    constructor(token) {\n        this.token = token;\n    }\n    // currently implements pre-authorization\n    // TODO: support preAuth = false where it hooks on 401\n    prepareRequest(options) {\n        if (!options.headers) {\n            throw Error('The request has no headers');\n        }\n        options.headers['Authorization'] = `Bearer ${this.token}`;\n    }\n    // This handler cannot handle 401\n    canHandleAuthentication() {\n        return false;\n    }\n    handleAuthentication() {\n        return __awaiter(this, void 0, void 0, function* () {\n            throw new Error('not implemented');\n        });\n    }\n}\nexports.BearerCredentialHandler = BearerCredentialHandler;\nclass PersonalAccessTokenCredentialHandler {\n    constructor(token) {\n        this.token = token;\n    }\n    // currently implements pre-authorization\n    // TODO: support preAuth = false where it hooks on 401\n    prepareRequest(options) {\n        if (!options.headers) {\n            throw Error('The request has no headers');\n        }\n        options.headers['Authorization'] = `Basic ${Buffer.from(`PAT:${this.token}`).toString('base64')}`;\n    }\n    // This handler cannot handle 401\n    canHandleAuthentication() {\n        return false;\n    }\n    handleAuthentication() {\n        return __awaiter(this, void 0, void 0, function* () {\n            throw new Error('not implemented');\n        });\n    }\n}\nexports.PersonalAccessTokenCredentialHandler = PersonalAccessTokenCredentialHandler;\n//# sourceMappingURL=auth.js.map","\"use strict\";\n/* eslint-disable @typescript-eslint/no-explicit-any */\nvar __createBinding = (this && this.__createBinding) || (Object.create ? (function(o, m, k, k2) {\n    if (k2 === undefined) k2 = k;\n    Object.defineProperty(o, k2, { enumerable: true, get: function() { return m[k]; } });\n}) : (function(o, m, k, k2) {\n    if (k2 === undefined) k2 = k;\n    o[k2] = m[k];\n}));\nvar __setModuleDefault = (this && this.__setModuleDefault) || (Object.create ? (function(o, v) {\n    Object.defineProperty(o, \"default\", { enumerable: true, value: v });\n}) : function(o, v) {\n    o[\"default\"] = v;\n});\nvar __importStar = (this && this.__importStar) || function (mod) {\n    if (mod && mod.__esModule) return mod;\n    var result = {};\n    if (mod != null) for (var k in mod) if (k !== \"default\" && Object.hasOwnProperty.call(mod, k)) __createBinding(result, mod, k);\n    __setModuleDefault(result, mod);\n    return result;\n};\nvar __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) {\n    function adopt(value) { return value instanceof P ? value : new P(function (resolve) { resolve(value); }); }\n    return new (P || (P = Promise))(function (resolve, reject) {\n        function fulfilled(value) { try { step(generator.next(value)); } catch (e) { reject(e); } }\n        function rejected(value) { try { step(generator[\"throw\"](value)); } catch (e) { reject(e); } }\n        function step(result) { result.done ? resolve(result.value) : adopt(result.value).then(fulfilled, rejected); }\n        step((generator = generator.apply(thisArg, _arguments || [])).next());\n    });\n};\nObject.defineProperty(exports, \"__esModule\", { value: true });\nexports.HttpClient = exports.isHttps = exports.HttpClientResponse = exports.HttpClientError = exports.getProxyUrl = exports.MediaTypes = exports.Headers = exports.HttpCodes = void 0;\nconst http = __importStar(require(\"http\"));\nconst https = __importStar(require(\"https\"));\nconst pm = __importStar(require(\"./proxy\"));\nconst tunnel = __importStar(require(\"tunnel\"));\nvar HttpCodes;\n(function (HttpCodes) {\n    HttpCodes[HttpCodes[\"OK\"] = 200] = \"OK\";\n    HttpCodes[HttpCodes[\"MultipleChoices\"] = 300] = \"MultipleChoices\";\n    HttpCodes[HttpCodes[\"MovedPermanently\"] = 301] = \"MovedPermanently\";\n    HttpCodes[HttpCodes[\"ResourceMoved\"] = 302] = \"ResourceMoved\";\n    HttpCodes[HttpCodes[\"SeeOther\"] = 303] = \"SeeOther\";\n    HttpCodes[HttpCodes[\"NotModified\"] = 304] = \"NotModified\";\n    HttpCodes[HttpCodes[\"UseProxy\"] = 305] = \"UseProxy\";\n    HttpCodes[HttpCodes[\"SwitchProxy\"] = 306] = \"SwitchProxy\";\n    HttpCodes[HttpCodes[\"TemporaryRedirect\"] = 307] = \"TemporaryRedirect\";\n    HttpCodes[HttpCodes[\"PermanentRedirect\"] = 308] = \"PermanentRedirect\";\n    HttpCodes[HttpCodes[\"BadRequest\"] = 400] = \"BadRequest\";\n    HttpCodes[HttpCodes[\"Unauthorized\"] = 401] = \"Unauthorized\";\n    HttpCodes[HttpCodes[\"PaymentRequired\"] = 402] = \"PaymentRequired\";\n    HttpCodes[HttpCodes[\"Forbidden\"] = 403] = \"Forbidden\";\n    HttpCodes[HttpCodes[\"NotFound\"] = 404] = \"NotFound\";\n    HttpCodes[HttpCodes[\"MethodNotAllowed\"] = 405] = \"MethodNotAllowed\";\n    HttpCodes[HttpCodes[\"NotAcceptable\"] = 406] = \"NotAcceptable\";\n    HttpCodes[HttpCodes[\"ProxyAuthenticationRequired\"] = 407] = \"ProxyAuthenticationRequired\";\n    HttpCodes[HttpCodes[\"RequestTimeout\"] = 408] = \"RequestTimeout\";\n    HttpCodes[HttpCodes[\"Conflict\"] = 409] = \"Conflict\";\n    HttpCodes[HttpCodes[\"Gone\"] = 410] = \"Gone\";\n    HttpCodes[HttpCodes[\"TooManyRequests\"] = 429] = \"TooManyRequests\";\n    HttpCodes[HttpCodes[\"InternalServerError\"] = 500] = \"InternalServerError\";\n    HttpCodes[HttpCodes[\"NotImplemented\"] = 501] = \"NotImplemented\";\n    HttpCodes[HttpCodes[\"BadGateway\"] = 502] = \"BadGateway\";\n    HttpCodes[HttpCodes[\"ServiceUnavailable\"] = 503] = \"ServiceUnavailable\";\n    HttpCodes[HttpCodes[\"GatewayTimeout\"] = 504] = \"GatewayTimeout\";\n})(HttpCodes = exports.HttpCodes || (exports.HttpCodes = {}));\nvar Headers;\n(function (Headers) {\n    Headers[\"Accept\"] = \"accept\";\n    Headers[\"ContentType\"] = \"content-type\";\n})(Headers = exports.Headers || (exports.Headers = {}));\nvar MediaTypes;\n(function (MediaTypes) {\n    MediaTypes[\"ApplicationJson\"] = \"application/json\";\n})(MediaTypes = exports.MediaTypes || (exports.MediaTypes = {}));\n/**\n * Returns the proxy URL, depending upon the supplied url and proxy environment variables.\n * @param serverUrl  The server URL where the request will be sent. For example, https://api.github.com\n */\nfunction getProxyUrl(serverUrl) {\n    const proxyUrl = pm.getProxyUrl(new URL(serverUrl));\n    return proxyUrl ? proxyUrl.href : '';\n}\nexports.getProxyUrl = getProxyUrl;\nconst HttpRedirectCodes = [\n    HttpCodes.MovedPermanently,\n    HttpCodes.ResourceMoved,\n    HttpCodes.SeeOther,\n    HttpCodes.TemporaryRedirect,\n    HttpCodes.PermanentRedirect\n];\nconst HttpResponseRetryCodes = [\n    HttpCodes.BadGateway,\n    HttpCodes.ServiceUnavailable,\n    HttpCodes.GatewayTimeout\n];\nconst RetryableHttpVerbs = ['OPTIONS', 'GET', 'DELETE', 'HEAD'];\nconst ExponentialBackoffCeiling = 10;\nconst ExponentialBackoffTimeSlice = 5;\nclass HttpClientError extends Error {\n    constructor(message, statusCode) {\n        super(message);\n        this.name = 'HttpClientError';\n        this.statusCode = statusCode;\n        Object.setPrototypeOf(this, HttpClientError.prototype);\n    }\n}\nexports.HttpClientError = HttpClientError;\nclass HttpClientResponse {\n    constructor(message) {\n        this.message = message;\n    }\n    readBody() {\n        return __awaiter(this, void 0, void 0, function* () {\n            return new Promise((resolve) => __awaiter(this, void 0, void 0, function* () {\n                let output = Buffer.alloc(0);\n                this.message.on('data', (chunk) => {\n                    output = Buffer.concat([output, chunk]);\n                });\n                this.message.on('end', () => {\n                    resolve(output.toString());\n                });\n            }));\n        });\n    }\n}\nexports.HttpClientResponse = HttpClientResponse;\nfunction isHttps(requestUrl) {\n    const parsedUrl = new URL(requestUrl);\n    return parsedUrl.protocol === 'https:';\n}\nexports.isHttps = isHttps;\nclass HttpClient {\n    constructor(userAgent, handlers, requestOptions) {\n        this._ignoreSslError = false;\n        this._allowRedirects = true;\n        this._allowRedirectDowngrade = false;\n        this._maxRedirects = 50;\n        this._allowRetries = false;\n        this._maxRetries = 1;\n        this._keepAlive = false;\n        this._disposed = false;\n        this.userAgent = userAgent;\n        this.handlers = handlers || [];\n        this.requestOptions = requestOptions;\n        if (requestOptions) {\n            if (requestOptions.ignoreSslError != null) {\n                this._ignoreSslError = requestOptions.ignoreSslError;\n            }\n            this._socketTimeout = requestOptions.socketTimeout;\n            if (requestOptions.allowRedirects != null) {\n                this._allowRedirects = requestOptions.allowRedirects;\n            }\n            if (requestOptions.allowRedirectDowngrade != null) {\n                this._allowRedirectDowngrade = requestOptions.allowRedirectDowngrade;\n            }\n            if (requestOptions.maxRedirects != null) {\n                this._maxRedirects = Math.max(requestOptions.maxRedirects, 0);\n            }\n            if (requestOptions.keepAlive != null) {\n                this._keepAlive = requestOptions.keepAlive;\n            }\n            if (requestOptions.allowRetries != null) {\n                this._allowRetries = requestOptions.allowRetries;\n            }\n            if (requestOptions.maxRetries != null) {\n                this._maxRetries = requestOptions.maxRetries;\n            }\n        }\n    }\n    options(requestUrl, additionalHeaders) {\n        return __awaiter(this, void 0, void 0, function* () {\n            return this.request('OPTIONS', requestUrl, null, additionalHeaders || {});\n        });\n    }\n    get(requestUrl, additionalHeaders) {\n        return __awaiter(this, void 0, void 0, function* () {\n            return this.request('GET', requestUrl, null, additionalHeaders || {});\n        });\n    }\n    del(requestUrl, additionalHeaders) {\n        return __awaiter(this, void 0, void 0, function* () {\n            return this.request('DELETE', requestUrl, null, additionalHeaders || {});\n        });\n    }\n    post(requestUrl, data, additionalHeaders) {\n        return __awaiter(this, void 0, void 0, function* () {\n            return this.request('POST', requestUrl, data, additionalHeaders || {});\n        });\n    }\n    patch(requestUrl, data, additionalHeaders) {\n        return __awaiter(this, void 0, void 0, function* () {\n            return this.request('PATCH', requestUrl, data, additionalHeaders || {});\n        });\n    }\n    put(requestUrl, data, additionalHeaders) {\n        return __awaiter(this, void 0, void 0, function* () {\n            return this.request('PUT', requestUrl, data, additionalHeaders || {});\n        });\n    }\n    head(requestUrl, additionalHeaders) {\n        return __awaiter(this, void 0, void 0, function* () {\n            return this.request('HEAD', requestUrl, null, additionalHeaders || {});\n        });\n    }\n    sendStream(verb, requestUrl, stream, additionalHeaders) {\n        return __awaiter(this, void 0, void 0, function* () {\n            return this.request(verb, requestUrl, stream, additionalHeaders);\n        });\n    }\n    /**\n     * Gets a typed object from an endpoint\n     * Be aware that not found returns a null.  Other errors (4xx, 5xx) reject the promise\n     */\n    getJson(requestUrl, additionalHeaders = {}) {\n        return __awaiter(this, void 0, void 0, function* () {\n            additionalHeaders[Headers.Accept] = this._getExistingOrDefaultHeader(additionalHeaders, Headers.Accept, MediaTypes.ApplicationJson);\n            const res = yield this.get(requestUrl, additionalHeaders);\n            return this._processResponse(res, this.requestOptions);\n        });\n    }\n    postJson(requestUrl, obj, additionalHeaders = {}) {\n        return __awaiter(this, void 0, void 0, function* () {\n            const data = JSON.stringify(obj, null, 2);\n            additionalHeaders[Headers.Accept] = this._getExistingOrDefaultHeader(additionalHeaders, Headers.Accept, MediaTypes.ApplicationJson);\n            additionalHeaders[Headers.ContentType] = this._getExistingOrDefaultHeader(additionalHeaders, Headers.ContentType, MediaTypes.ApplicationJson);\n            const res = yield this.post(requestUrl, data, additionalHeaders);\n            return this._processResponse(res, this.requestOptions);\n        });\n    }\n    putJson(requestUrl, obj, additionalHeaders = {}) {\n        return __awaiter(this, void 0, void 0, function* () {\n            const data = JSON.stringify(obj, null, 2);\n            additionalHeaders[Headers.Accept] = this._getExistingOrDefaultHeader(additionalHeaders, Headers.Accept, MediaTypes.ApplicationJson);\n            additionalHeaders[Headers.ContentType] = this._getExistingOrDefaultHeader(additionalHeaders, Headers.ContentType, MediaTypes.ApplicationJson);\n            const res = yield this.put(requestUrl, data, additionalHeaders);\n            return this._processResponse(res, this.requestOptions);\n        });\n    }\n    patchJson(requestUrl, obj, additionalHeaders = {}) {\n        return __awaiter(this, void 0, void 0, function* () {\n            const data = JSON.stringify(obj, null, 2);\n            additionalHeaders[Headers.Accept] = this._getExistingOrDefaultHeader(additionalHeaders, Headers.Accept, MediaTypes.ApplicationJson);\n            additionalHeaders[Headers.ContentType] = this._getExistingOrDefaultHeader(additionalHeaders, Headers.ContentType, MediaTypes.ApplicationJson);\n            const res = yield this.patch(requestUrl, data, additionalHeaders);\n            return this._processResponse(res, this.requestOptions);\n        });\n    }\n    /**\n     * Makes a raw http request.\n     * All other methods such as get, post, patch, and request ultimately call this.\n     * Prefer get, del, post and patch\n     */\n    request(verb, requestUrl, data, headers) {\n        return __awaiter(this, void 0, void 0, function* () {\n            if (this._disposed) {\n                throw new Error('Client has already been disposed.');\n            }\n            const parsedUrl = new URL(requestUrl);\n            let info = this._prepareRequest(verb, parsedUrl, headers);\n            // Only perform retries on reads since writes may not be idempotent.\n            const maxTries = this._allowRetries && RetryableHttpVerbs.includes(verb)\n                ? this._maxRetries + 1\n                : 1;\n            let numTries = 0;\n            let response;\n            do {\n                response = yield this.requestRaw(info, data);\n                // Check if it's an authentication challenge\n                if (response &&\n                    response.message &&\n                    response.message.statusCode === HttpCodes.Unauthorized) {\n                    let authenticationHandler;\n                    for (const handler of this.handlers) {\n                        if (handler.canHandleAuthentication(response)) {\n                            authenticationHandler = handler;\n                            break;\n                        }\n                    }\n                    if (authenticationHandler) {\n                        return authenticationHandler.handleAuthentication(this, info, data);\n                    }\n                    else {\n                        // We have received an unauthorized response but have no handlers to handle it.\n                        // Let the response return to the caller.\n                        return response;\n                    }\n                }\n                let redirectsRemaining = this._maxRedirects;\n                while (response.message.statusCode &&\n                    HttpRedirectCodes.includes(response.message.statusCode) &&\n                    this._allowRedirects &&\n                    redirectsRemaining > 0) {\n                    const redirectUrl = response.message.headers['location'];\n                    if (!redirectUrl) {\n                        // if there's no location to redirect to, we won't\n                        break;\n                    }\n                    const parsedRedirectUrl = new URL(redirectUrl);\n                    if (parsedUrl.protocol === 'https:' &&\n                        parsedUrl.protocol !== parsedRedirectUrl.protocol &&\n                        !this._allowRedirectDowngrade) {\n                        throw new Error('Redirect from HTTPS to HTTP protocol. This downgrade is not allowed for security reasons. If you want to allow this behavior, set the allowRedirectDowngrade option to true.');\n                    }\n                    // we need to finish reading the response before reassigning response\n                    // which will leak the open socket.\n                    yield response.readBody();\n                    // strip authorization header if redirected to a different hostname\n                    if (parsedRedirectUrl.hostname !== parsedUrl.hostname) {\n                        for (const header in headers) {\n                            // header names are case insensitive\n                            if (header.toLowerCase() === 'authorization') {\n                                delete headers[header];\n                            }\n                        }\n                    }\n                    // let's make the request with the new redirectUrl\n                    info = this._prepareRequest(verb, parsedRedirectUrl, headers);\n                    response = yield this.requestRaw(info, data);\n                    redirectsRemaining--;\n                }\n                if (!response.message.statusCode ||\n                    !HttpResponseRetryCodes.includes(response.message.statusCode)) {\n                    // If not a retry code, return immediately instead of retrying\n                    return response;\n                }\n                numTries += 1;\n                if (numTries < maxTries) {\n                    yield response.readBody();\n                    yield this._performExponentialBackoff(numTries);\n                }\n            } while (numTries < maxTries);\n            return response;\n        });\n    }\n    /**\n     * Needs to be called if keepAlive is set to true in request options.\n     */\n    dispose() {\n        if (this._agent) {\n            this._agent.destroy();\n        }\n        this._disposed = true;\n    }\n    /**\n     * Raw request.\n     * @param info\n     * @param data\n     */\n    requestRaw(info, data) {\n        return __awaiter(this, void 0, void 0, function* () {\n            return new Promise((resolve, reject) => {\n                function callbackForResult(err, res) {\n                    if (err) {\n                        reject(err);\n                    }\n                    else if (!res) {\n                        // If `err` is not passed, then `res` must be passed.\n                        reject(new Error('Unknown error'));\n                    }\n                    else {\n                        resolve(res);\n                    }\n                }\n                this.requestRawWithCallback(info, data, callbackForResult);\n            });\n        });\n    }\n    /**\n     * Raw request with callback.\n     * @param info\n     * @param data\n     * @param onResult\n     */\n    requestRawWithCallback(info, data, onResult) {\n        if (typeof data === 'string') {\n            if (!info.options.headers) {\n                info.options.headers = {};\n            }\n            info.options.headers['Content-Length'] = Buffer.byteLength(data, 'utf8');\n        }\n        let callbackCalled = false;\n        function handleResult(err, res) {\n            if (!callbackCalled) {\n                callbackCalled = true;\n                onResult(err, res);\n            }\n        }\n        const req = info.httpModule.request(info.options, (msg) => {\n            const res = new HttpClientResponse(msg);\n            handleResult(undefined, res);\n        });\n        let socket;\n        req.on('socket', sock => {\n            socket = sock;\n        });\n        // If we ever get disconnected, we want the socket to timeout eventually\n        req.setTimeout(this._socketTimeout || 3 * 60000, () => {\n            if (socket) {\n                socket.end();\n            }\n            handleResult(new Error(`Request timeout: ${info.options.path}`));\n        });\n        req.on('error', function (err) {\n            // err has statusCode property\n            // res should have headers\n            handleResult(err);\n        });\n        if (data && typeof data === 'string') {\n            req.write(data, 'utf8');\n        }\n        if (data && typeof data !== 'string') {\n            data.on('close', function () {\n                req.end();\n            });\n            data.pipe(req);\n        }\n        else {\n            req.end();\n        }\n    }\n    /**\n     * Gets an http agent. This function is useful when you need an http agent that handles\n     * routing through a proxy server - depending upon the url and proxy environment variables.\n     * @param serverUrl  The server URL where the request will be sent. For example, https://api.github.com\n     */\n    getAgent(serverUrl) {\n        const parsedUrl = new URL(serverUrl);\n        return this._getAgent(parsedUrl);\n    }\n    _prepareRequest(method, requestUrl, headers) {\n        const info = {};\n        info.parsedUrl = requestUrl;\n        const usingSsl = info.parsedUrl.protocol === 'https:';\n        info.httpModule = usingSsl ? https : http;\n        const defaultPort = usingSsl ? 443 : 80;\n        info.options = {};\n        info.options.host = info.parsedUrl.hostname;\n        info.options.port = info.parsedUrl.port\n            ? parseInt(info.parsedUrl.port)\n            : defaultPort;\n        info.options.path =\n            (info.parsedUrl.pathname || '') + (info.parsedUrl.search || '');\n        info.options.method = method;\n        info.options.headers = this._mergeHeaders(headers);\n        if (this.userAgent != null) {\n            info.options.headers['user-agent'] = this.userAgent;\n        }\n        info.options.agent = this._getAgent(info.parsedUrl);\n        // gives handlers an opportunity to participate\n        if (this.handlers) {\n            for (const handler of this.handlers) {\n                handler.prepareRequest(info.options);\n            }\n        }\n        return info;\n    }\n    _mergeHeaders(headers) {\n        if (this.requestOptions && this.requestOptions.headers) {\n            return Object.assign({}, lowercaseKeys(this.requestOptions.headers), lowercaseKeys(headers || {}));\n        }\n        return lowercaseKeys(headers || {});\n    }\n    _getExistingOrDefaultHeader(additionalHeaders, header, _default) {\n        let clientHeader;\n        if (this.requestOptions && this.requestOptions.headers) {\n            clientHeader = lowercaseKeys(this.requestOptions.headers)[header];\n        }\n        return additionalHeaders[header] || clientHeader || _default;\n    }\n    _getAgent(parsedUrl) {\n        let agent;\n        const proxyUrl = pm.getProxyUrl(parsedUrl);\n        const useProxy = proxyUrl && proxyUrl.hostname;\n        if (this._keepAlive && useProxy) {\n            agent = this._proxyAgent;\n        }\n        if (this._keepAlive && !useProxy) {\n            agent = this._agent;\n        }\n        // if agent is already assigned use that agent.\n        if (agent) {\n            return agent;\n        }\n        const usingSsl = parsedUrl.protocol === 'https:';\n        let maxSockets = 100;\n        if (this.requestOptions) {\n            maxSockets = this.requestOptions.maxSockets || http.globalAgent.maxSockets;\n        }\n        // This is `useProxy` again, but we need to check `proxyURl` directly for TypeScripts's flow analysis.\n        if (proxyUrl && proxyUrl.hostname) {\n            const agentOptions = {\n                maxSockets,\n                keepAlive: this._keepAlive,\n                proxy: Object.assign(Object.assign({}, ((proxyUrl.username || proxyUrl.password) && {\n                    proxyAuth: `${proxyUrl.username}:${proxyUrl.password}`\n                })), { host: proxyUrl.hostname, port: proxyUrl.port })\n            };\n            let tunnelAgent;\n            const overHttps = proxyUrl.protocol === 'https:';\n            if (usingSsl) {\n                tunnelAgent = overHttps ? tunnel.httpsOverHttps : tunnel.httpsOverHttp;\n            }\n            else {\n                tunnelAgent = overHttps ? tunnel.httpOverHttps : tunnel.httpOverHttp;\n            }\n            agent = tunnelAgent(agentOptions);\n            this._proxyAgent = agent;\n        }\n        // if reusing agent across request and tunneling agent isn't assigned create a new agent\n        if (this._keepAlive && !agent) {\n            const options = { keepAlive: this._keepAlive, maxSockets };\n            agent = usingSsl ? new https.Agent(options) : new http.Agent(options);\n            this._agent = agent;\n        }\n        // if not using private agent and tunnel agent isn't setup then use global agent\n        if (!agent) {\n            agent = usingSsl ? https.globalAgent : http.globalAgent;\n        }\n        if (usingSsl && this._ignoreSslError) {\n            // we don't want to set NODE_TLS_REJECT_UNAUTHORIZED=0 since that will affect request for entire process\n            // http.RequestOptions doesn't expose a way to modify RequestOptions.agent.options\n            // we have to cast it to any and change it directly\n            agent.options = Object.assign(agent.options || {}, {\n                rejectUnauthorized: false\n            });\n        }\n        return agent;\n    }\n    _performExponentialBackoff(retryNumber) {\n        return __awaiter(this, void 0, void 0, function* () {\n            retryNumber = Math.min(ExponentialBackoffCeiling, retryNumber);\n            const ms = ExponentialBackoffTimeSlice * Math.pow(2, retryNumber);\n            return new Promise(resolve => setTimeout(() => resolve(), ms));\n        });\n    }\n    _processResponse(res, options) {\n        return __awaiter(this, void 0, void 0, function* () {\n            return new Promise((resolve, reject) => __awaiter(this, void 0, void 0, function* () {\n                const statusCode = res.message.statusCode || 0;\n                const response = {\n                    statusCode,\n                    result: null,\n                    headers: {}\n                };\n                // not found leads to null obj returned\n                if (statusCode === HttpCodes.NotFound) {\n                    resolve(response);\n                }\n                // get the result from the body\n                function dateTimeDeserializer(key, value) {\n                    if (typeof value === 'string') {\n                        const a = new Date(value);\n                        if (!isNaN(a.valueOf())) {\n                            return a;\n                        }\n                    }\n                    return value;\n                }\n                let obj;\n                let contents;\n                try {\n                    contents = yield res.readBody();\n                    if (contents && contents.length > 0) {\n                        if (options && options.deserializeDates) {\n                            obj = JSON.parse(contents, dateTimeDeserializer);\n                        }\n                        else {\n                            obj = JSON.parse(contents);\n                        }\n                        response.result = obj;\n                    }\n                    response.headers = res.message.headers;\n                }\n                catch (err) {\n                    // Invalid resource (contents not json);  leaving result obj null\n                }\n                // note that 3xx redirects are handled by the http layer.\n                if (statusCode > 299) {\n                    let msg;\n                    // if exception/error in body, attempt to get better error\n                    if (obj && obj.message) {\n                        msg = obj.message;\n                    }\n                    else if (contents && contents.length > 0) {\n                        // it may be the case that the exception is in the body message as string\n                        msg = contents;\n                    }\n                    else {\n                        msg = `Failed request: (${statusCode})`;\n                    }\n                    const err = new HttpClientError(msg, statusCode);\n                    err.result = response.result;\n                    reject(err);\n                }\n                else {\n                    resolve(response);\n                }\n            }));\n        });\n    }\n}\nexports.HttpClient = HttpClient;\nconst lowercaseKeys = (obj) => Object.keys(obj).reduce((c, k) => ((c[k.toLowerCase()] = obj[k]), c), {});\n//# sourceMappingURL=index.js.map","\"use strict\";\nObject.defineProperty(exports, \"__esModule\", { value: true });\nexports.checkBypass = exports.getProxyUrl = void 0;\nfunction getProxyUrl(reqUrl) {\n    const usingSsl = reqUrl.protocol === 'https:';\n    if (checkBypass(reqUrl)) {\n        return undefined;\n    }\n    const proxyVar = (() => {\n        if (usingSsl) {\n            return process.env['https_proxy'] || process.env['HTTPS_PROXY'];\n        }\n        else {\n            return process.env['http_proxy'] || process.env['HTTP_PROXY'];\n        }\n    })();\n    if (proxyVar) {\n        return new URL(proxyVar);\n    }\n    else {\n        return undefined;\n    }\n}\nexports.getProxyUrl = getProxyUrl;\nfunction checkBypass(reqUrl) {\n    if (!reqUrl.hostname) {\n        return false;\n    }\n    const noProxy = process.env['no_proxy'] || process.env['NO_PROXY'] || '';\n    if (!noProxy) {\n        return false;\n    }\n    // Determine the request port\n    let reqPort;\n    if (reqUrl.port) {\n        reqPort = Number(reqUrl.port);\n    }\n    else if (reqUrl.protocol === 'http:') {\n        reqPort = 80;\n    }\n    else if (reqUrl.protocol === 'https:') {\n        reqPort = 443;\n    }\n    // Format the request hostname and hostname with port\n    const upperReqHosts = [reqUrl.hostname.toUpperCase()];\n    if (typeof reqPort === 'number') {\n        upperReqHosts.push(`${upperReqHosts[0]}:${reqPort}`);\n    }\n    // Compare request host against noproxy\n    for (const upperNoProxyItem of noProxy\n        .split(',')\n        .map(x => x.trim().toUpperCase())\n        .filter(x => x)) {\n        if (upperReqHosts.some(x => x === upperNoProxyItem)) {\n            return true;\n        }\n    }\n    return false;\n}\nexports.checkBypass = checkBypass;\n//# sourceMappingURL=proxy.js.map","/**\n * @license\n * Lodash <https://lodash.com/>\n * Copyright OpenJS Foundation and other contributors <https://openjsf.org/>\n * Released under MIT license <https://lodash.com/license>\n * Based on Underscore.js 1.8.3 <http://underscorejs.org/LICENSE>\n * Copyright Jeremy Ashkenas, DocumentCloud and Investigative Reporters & Editors\n */\n;(function() {\n\n  /** Used as a safe reference for `undefined` in pre-ES5 environments. */\n  var undefined;\n\n  /** Used as the semantic version number. */\n  var VERSION = '4.17.21';\n\n  /** Used as the size to enable large array optimizations. */\n  var LARGE_ARRAY_SIZE = 200;\n\n  /** Error message constants. */\n  var CORE_ERROR_TEXT = 'Unsupported core-js use. Try https://npms.io/search?q=ponyfill.',\n      FUNC_ERROR_TEXT = 'Expected a function',\n      INVALID_TEMPL_VAR_ERROR_TEXT = 'Invalid `variable` option passed into `_.template`';\n\n  /** Used to stand-in for `undefined` hash values. */\n  var HASH_UNDEFINED = '__lodash_hash_undefined__';\n\n  /** Used as the maximum memoize cache size. */\n  var MAX_MEMOIZE_SIZE = 500;\n\n  /** Used as the internal argument placeholder. */\n  var PLACEHOLDER = '__lodash_placeholder__';\n\n  /** Used to compose bitmasks for cloning. */\n  var CLONE_DEEP_FLAG = 1,\n      CLONE_FLAT_FLAG = 2,\n      CLONE_SYMBOLS_FLAG = 4;\n\n  /** Used to compose bitmasks for value comparisons. */\n  var COMPARE_PARTIAL_FLAG = 1,\n      COMPARE_UNORDERED_FLAG = 2;\n\n  /** Used to compose bitmasks for function metadata. */\n  var WRAP_BIND_FLAG = 1,\n      WRAP_BIND_KEY_FLAG = 2,\n      WRAP_CURRY_BOUND_FLAG = 4,\n      WRAP_CURRY_FLAG = 8,\n      WRAP_CURRY_RIGHT_FLAG = 16,\n      WRAP_PARTIAL_FLAG = 32,\n      WRAP_PARTIAL_RIGHT_FLAG = 64,\n      WRAP_ARY_FLAG = 128,\n      WRAP_REARG_FLAG = 256,\n      WRAP_FLIP_FLAG = 512;\n\n  /** Used as default options for `_.truncate`. */\n  var DEFAULT_TRUNC_LENGTH = 30,\n      DEFAULT_TRUNC_OMISSION = '...';\n\n  /** Used to detect hot functions by number of calls within a span of milliseconds. */\n  var HOT_COUNT = 800,\n      HOT_SPAN = 16;\n\n  /** Used to indicate the type of lazy iteratees. */\n  var LAZY_FILTER_FLAG = 1,\n      LAZY_MAP_FLAG = 2,\n      LAZY_WHILE_FLAG = 3;\n\n  /** Used as references for various `Number` constants. */\n  var INFINITY = 1 / 0,\n      MAX_SAFE_INTEGER = 9007199254740991,\n      MAX_INTEGER = 1.7976931348623157e+308,\n      NAN = 0 / 0;\n\n  /** Used as references for the maximum length and index of an array. */\n  var MAX_ARRAY_LENGTH = 4294967295,\n      MAX_ARRAY_INDEX = MAX_ARRAY_LENGTH - 1,\n      HALF_MAX_ARRAY_LENGTH = MAX_ARRAY_LENGTH >>> 1;\n\n  /** Used to associate wrap methods with their bit flags. */\n  var wrapFlags = [\n    ['ary', WRAP_ARY_FLAG],\n    ['bind', WRAP_BIND_FLAG],\n    ['bindKey', WRAP_BIND_KEY_FLAG],\n    ['curry', WRAP_CURRY_FLAG],\n    ['curryRight', WRAP_CURRY_RIGHT_FLAG],\n    ['flip', WRAP_FLIP_FLAG],\n    ['partial', WRAP_PARTIAL_FLAG],\n    ['partialRight', WRAP_PARTIAL_RIGHT_FLAG],\n    ['rearg', WRAP_REARG_FLAG]\n  ];\n\n  /** `Object#toString` result references. */\n  var argsTag = '[object Arguments]',\n      arrayTag = '[object Array]',\n      asyncTag = '[object AsyncFunction]',\n      boolTag = '[object Boolean]',\n      dateTag = '[object Date]',\n      domExcTag = '[object DOMException]',\n      errorTag = '[object Error]',\n      funcTag = '[object Function]',\n      genTag = '[object GeneratorFunction]',\n      mapTag = '[object Map]',\n      numberTag = '[object Number]',\n      nullTag = '[object Null]',\n      objectTag = '[object Object]',\n      promiseTag = '[object Promise]',\n      proxyTag = '[object Proxy]',\n      regexpTag = '[object RegExp]',\n      setTag = '[object Set]',\n      stringTag = '[object String]',\n      symbolTag = '[object Symbol]',\n      undefinedTag = '[object Undefined]',\n      weakMapTag = '[object WeakMap]',\n      weakSetTag = '[object WeakSet]';\n\n  var arrayBufferTag = '[object ArrayBuffer]',\n      dataViewTag = '[object DataView]',\n      float32Tag = '[object Float32Array]',\n      float64Tag = '[object Float64Array]',\n      int8Tag = '[object Int8Array]',\n      int16Tag = '[object Int16Array]',\n      int32Tag = '[object Int32Array]',\n      uint8Tag = '[object Uint8Array]',\n      uint8ClampedTag = '[object Uint8ClampedArray]',\n      uint16Tag = '[object Uint16Array]',\n      uint32Tag = '[object Uint32Array]';\n\n  /** Used to match empty string literals in compiled template source. */\n  var reEmptyStringLeading = /\\b__p \\+= '';/g,\n      reEmptyStringMiddle = /\\b(__p \\+=) '' \\+/g,\n      reEmptyStringTrailing = /(__e\\(.*?\\)|\\b__t\\)) \\+\\n'';/g;\n\n  /** Used to match HTML entities and HTML characters. */\n  var reEscapedHtml = /&(?:amp|lt|gt|quot|#39);/g,\n      reUnescapedHtml = /[&<>\"']/g,\n      reHasEscapedHtml = RegExp(reEscapedHtml.source),\n      reHasUnescapedHtml = RegExp(reUnescapedHtml.source);\n\n  /** Used to match template delimiters. */\n  var reEscape = /<%-([\\s\\S]+?)%>/g,\n      reEvaluate = /<%([\\s\\S]+?)%>/g,\n      reInterpolate = /<%=([\\s\\S]+?)%>/g;\n\n  /** Used to match property names within property paths. */\n  var reIsDeepProp = /\\.|\\[(?:[^[\\]]*|([\"'])(?:(?!\\1)[^\\\\]|\\\\.)*?\\1)\\]/,\n      reIsPlainProp = /^\\w*$/,\n      rePropName = /[^.[\\]]+|\\[(?:(-?\\d+(?:\\.\\d+)?)|([\"'])((?:(?!\\2)[^\\\\]|\\\\.)*?)\\2)\\]|(?=(?:\\.|\\[\\])(?:\\.|\\[\\]|$))/g;\n\n  /**\n   * Used to match `RegExp`\n   * [syntax characters](http://ecma-international.org/ecma-262/7.0/#sec-patterns).\n   */\n  var reRegExpChar = /[\\\\^$.*+?()[\\]{}|]/g,\n      reHasRegExpChar = RegExp(reRegExpChar.source);\n\n  /** Used to match leading whitespace. */\n  var reTrimStart = /^\\s+/;\n\n  /** Used to match a single whitespace character. */\n  var reWhitespace = /\\s/;\n\n  /** Used to match wrap detail comments. */\n  var reWrapComment = /\\{(?:\\n\\/\\* \\[wrapped with .+\\] \\*\\/)?\\n?/,\n      reWrapDetails = /\\{\\n\\/\\* \\[wrapped with (.+)\\] \\*/,\n      reSplitDetails = /,? & /;\n\n  /** Used to match words composed of alphanumeric characters. */\n  var reAsciiWord = /[^\\x00-\\x2f\\x3a-\\x40\\x5b-\\x60\\x7b-\\x7f]+/g;\n\n  /**\n   * Used to validate the `validate` option in `_.template` variable.\n   *\n   * Forbids characters which could potentially change the meaning of the function argument definition:\n   * - \"(),\" (modification of function parameters)\n   * - \"=\" (default value)\n   * - \"[]{}\" (destructuring of function parameters)\n   * - \"/\" (beginning of a comment)\n   * - whitespace\n   */\n  var reForbiddenIdentifierChars = /[()=,{}\\[\\]\\/\\s]/;\n\n  /** Used to match backslashes in property paths. */\n  var reEscapeChar = /\\\\(\\\\)?/g;\n\n  /**\n   * Used to match\n   * [ES template delimiters](http://ecma-international.org/ecma-262/7.0/#sec-template-literal-lexical-components).\n   */\n  var reEsTemplate = /\\$\\{([^\\\\}]*(?:\\\\.[^\\\\}]*)*)\\}/g;\n\n  /** Used to match `RegExp` flags from their coerced string values. */\n  var reFlags = /\\w*$/;\n\n  /** Used to detect bad signed hexadecimal string values. */\n  var reIsBadHex = /^[-+]0x[0-9a-f]+$/i;\n\n  /** Used to detect binary string values. */\n  var reIsBinary = /^0b[01]+$/i;\n\n  /** Used to detect host constructors (Safari). */\n  var reIsHostCtor = /^\\[object .+?Constructor\\]$/;\n\n  /** Used to detect octal string values. */\n  var reIsOctal = /^0o[0-7]+$/i;\n\n  /** Used to detect unsigned integer values. */\n  var reIsUint = /^(?:0|[1-9]\\d*)$/;\n\n  /** Used to match Latin Unicode letters (excluding mathematical operators). */\n  var reLatin = /[\\xc0-\\xd6\\xd8-\\xf6\\xf8-\\xff\\u0100-\\u017f]/g;\n\n  /** Used to ensure capturing order of template delimiters. */\n  var reNoMatch = /($^)/;\n\n  /** Used to match unescaped characters in compiled string literals. */\n  var reUnescapedString = /['\\n\\r\\u2028\\u2029\\\\]/g;\n\n  /** Used to compose unicode character classes. */\n  var rsAstralRange = '\\\\ud800-\\\\udfff',\n      rsComboMarksRange = '\\\\u0300-\\\\u036f',\n      reComboHalfMarksRange = '\\\\ufe20-\\\\ufe2f',\n      rsComboSymbolsRange = '\\\\u20d0-\\\\u20ff',\n      rsComboRange = rsComboMarksRange + reComboHalfMarksRange + rsComboSymbolsRange,\n      rsDingbatRange = '\\\\u2700-\\\\u27bf',\n      rsLowerRange = 'a-z\\\\xdf-\\\\xf6\\\\xf8-\\\\xff',\n      rsMathOpRange = '\\\\xac\\\\xb1\\\\xd7\\\\xf7',\n      rsNonCharRange = '\\\\x00-\\\\x2f\\\\x3a-\\\\x40\\\\x5b-\\\\x60\\\\x7b-\\\\xbf',\n      rsPunctuationRange = '\\\\u2000-\\\\u206f',\n      rsSpaceRange = ' \\\\t\\\\x0b\\\\f\\\\xa0\\\\ufeff\\\\n\\\\r\\\\u2028\\\\u2029\\\\u1680\\\\u180e\\\\u2000\\\\u2001\\\\u2002\\\\u2003\\\\u2004\\\\u2005\\\\u2006\\\\u2007\\\\u2008\\\\u2009\\\\u200a\\\\u202f\\\\u205f\\\\u3000',\n      rsUpperRange = 'A-Z\\\\xc0-\\\\xd6\\\\xd8-\\\\xde',\n      rsVarRange = '\\\\ufe0e\\\\ufe0f',\n      rsBreakRange = rsMathOpRange + rsNonCharRange + rsPunctuationRange + rsSpaceRange;\n\n  /** Used to compose unicode capture groups. */\n  var rsApos = \"['\\u2019]\",\n      rsAstral = '[' + rsAstralRange + ']',\n      rsBreak = '[' + rsBreakRange + ']',\n      rsCombo = '[' + rsComboRange + ']',\n      rsDigits = '\\\\d+',\n      rsDingbat = '[' + rsDingbatRange + ']',\n      rsLower = '[' + rsLowerRange + ']',\n      rsMisc = '[^' + rsAstralRange + rsBreakRange + rsDigits + rsDingbatRange + rsLowerRange + rsUpperRange + ']',\n      rsFitz = '\\\\ud83c[\\\\udffb-\\\\udfff]',\n      rsModifier = '(?:' + rsCombo + '|' + rsFitz + ')',\n      rsNonAstral = '[^' + rsAstralRange + ']',\n      rsRegional = '(?:\\\\ud83c[\\\\udde6-\\\\uddff]){2}',\n      rsSurrPair = '[\\\\ud800-\\\\udbff][\\\\udc00-\\\\udfff]',\n      rsUpper = '[' + rsUpperRange + ']',\n      rsZWJ = '\\\\u200d';\n\n  /** Used to compose unicode regexes. */\n  var rsMiscLower = '(?:' + rsLower + '|' + rsMisc + ')',\n      rsMiscUpper = '(?:' + rsUpper + '|' + rsMisc + ')',\n      rsOptContrLower = '(?:' + rsApos + '(?:d|ll|m|re|s|t|ve))?',\n      rsOptContrUpper = '(?:' + rsApos + '(?:D|LL|M|RE|S|T|VE))?',\n      reOptMod = rsModifier + '?',\n      rsOptVar = '[' + rsVarRange + ']?',\n      rsOptJoin = '(?:' + rsZWJ + '(?:' + [rsNonAstral, rsRegional, rsSurrPair].join('|') + ')' + rsOptVar + reOptMod + ')*',\n      rsOrdLower = '\\\\d*(?:1st|2nd|3rd|(?![123])\\\\dth)(?=\\\\b|[A-Z_])',\n      rsOrdUpper = '\\\\d*(?:1ST|2ND|3RD|(?![123])\\\\dTH)(?=\\\\b|[a-z_])',\n      rsSeq = rsOptVar + reOptMod + rsOptJoin,\n      rsEmoji = '(?:' + [rsDingbat, rsRegional, rsSurrPair].join('|') + ')' + rsSeq,\n      rsSymbol = '(?:' + [rsNonAstral + rsCombo + '?', rsCombo, rsRegional, rsSurrPair, rsAstral].join('|') + ')';\n\n  /** Used to match apostrophes. */\n  var reApos = RegExp(rsApos, 'g');\n\n  /**\n   * Used to match [combining diacritical marks](https://en.wikipedia.org/wiki/Combining_Diacritical_Marks) and\n   * [combining diacritical marks for symbols](https://en.wikipedia.org/wiki/Combining_Diacritical_Marks_for_Symbols).\n   */\n  var reComboMark = RegExp(rsCombo, 'g');\n\n  /** Used to match [string symbols](https://mathiasbynens.be/notes/javascript-unicode). */\n  var reUnicode = RegExp(rsFitz + '(?=' + rsFitz + ')|' + rsSymbol + rsSeq, 'g');\n\n  /** Used to match complex or compound words. */\n  var reUnicodeWord = RegExp([\n    rsUpper + '?' + rsLower + '+' + rsOptContrLower + '(?=' + [rsBreak, rsUpper, '$'].join('|') + ')',\n    rsMiscUpper + '+' + rsOptContrUpper + '(?=' + [rsBreak, rsUpper + rsMiscLower, '$'].join('|') + ')',\n    rsUpper + '?' + rsMiscLower + '+' + rsOptContrLower,\n    rsUpper + '+' + rsOptContrUpper,\n    rsOrdUpper,\n    rsOrdLower,\n    rsDigits,\n    rsEmoji\n  ].join('|'), 'g');\n\n  /** Used to detect strings with [zero-width joiners or code points from the astral planes](http://eev.ee/blog/2015/09/12/dark-corners-of-unicode/). */\n  var reHasUnicode = RegExp('[' + rsZWJ + rsAstralRange  + rsComboRange + rsVarRange + ']');\n\n  /** Used to detect strings that need a more robust regexp to match words. */\n  var reHasUnicodeWord = /[a-z][A-Z]|[A-Z]{2}[a-z]|[0-9][a-zA-Z]|[a-zA-Z][0-9]|[^a-zA-Z0-9 ]/;\n\n  /** Used to assign default `context` object properties. */\n  var contextProps = [\n    'Array', 'Buffer', 'DataView', 'Date', 'Error', 'Float32Array', 'Float64Array',\n    'Function', 'Int8Array', 'Int16Array', 'Int32Array', 'Map', 'Math', 'Object',\n    'Promise', 'RegExp', 'Set', 'String', 'Symbol', 'TypeError', 'Uint8Array',\n    'Uint8ClampedArray', 'Uint16Array', 'Uint32Array', 'WeakMap',\n    '_', 'clearTimeout', 'isFinite', 'parseInt', 'setTimeout'\n  ];\n\n  /** Used to make template sourceURLs easier to identify. */\n  var templateCounter = -1;\n\n  /** Used to identify `toStringTag` values of typed arrays. */\n  var typedArrayTags = {};\n  typedArrayTags[float32Tag] = typedArrayTags[float64Tag] =\n  typedArrayTags[int8Tag] = typedArrayTags[int16Tag] =\n  typedArrayTags[int32Tag] = typedArrayTags[uint8Tag] =\n  typedArrayTags[uint8ClampedTag] = typedArrayTags[uint16Tag] =\n  typedArrayTags[uint32Tag] = true;\n  typedArrayTags[argsTag] = typedArrayTags[arrayTag] =\n  typedArrayTags[arrayBufferTag] = typedArrayTags[boolTag] =\n  typedArrayTags[dataViewTag] = typedArrayTags[dateTag] =\n  typedArrayTags[errorTag] = typedArrayTags[funcTag] =\n  typedArrayTags[mapTag] = typedArrayTags[numberTag] =\n  typedArrayTags[objectTag] = typedArrayTags[regexpTag] =\n  typedArrayTags[setTag] = typedArrayTags[stringTag] =\n  typedArrayTags[weakMapTag] = false;\n\n  /** Used to identify `toStringTag` values supported by `_.clone`. */\n  var cloneableTags = {};\n  cloneableTags[argsTag] = cloneableTags[arrayTag] =\n  cloneableTags[arrayBufferTag] = cloneableTags[dataViewTag] =\n  cloneableTags[boolTag] = cloneableTags[dateTag] =\n  cloneableTags[float32Tag] = cloneableTags[float64Tag] =\n  cloneableTags[int8Tag] = cloneableTags[int16Tag] =\n  cloneableTags[int32Tag] = cloneableTags[mapTag] =\n  cloneableTags[numberTag] = cloneableTags[objectTag] =\n  cloneableTags[regexpTag] = cloneableTags[setTag] =\n  cloneableTags[stringTag] = cloneableTags[symbolTag] =\n  cloneableTags[uint8Tag] = cloneableTags[uint8ClampedTag] =\n  cloneableTags[uint16Tag] = cloneableTags[uint32Tag] = true;\n  cloneableTags[errorTag] = cloneableTags[funcTag] =\n  cloneableTags[weakMapTag] = false;\n\n  /** Used to map Latin Unicode letters to basic Latin letters. */\n  var deburredLetters = {\n    // Latin-1 Supplement block.\n    '\\xc0': 'A',  '\\xc1': 'A', '\\xc2': 'A', '\\xc3': 'A', '\\xc4': 'A', '\\xc5': 'A',\n    '\\xe0': 'a',  '\\xe1': 'a', '\\xe2': 'a', '\\xe3': 'a', '\\xe4': 'a', '\\xe5': 'a',\n    '\\xc7': 'C',  '\\xe7': 'c',\n    '\\xd0': 'D',  '\\xf0': 'd',\n    '\\xc8': 'E',  '\\xc9': 'E', '\\xca': 'E', '\\xcb': 'E',\n    '\\xe8': 'e',  '\\xe9': 'e', '\\xea': 'e', '\\xeb': 'e',\n    '\\xcc': 'I',  '\\xcd': 'I', '\\xce': 'I', '\\xcf': 'I',\n    '\\xec': 'i',  '\\xed': 'i', '\\xee': 'i', '\\xef': 'i',\n    '\\xd1': 'N',  '\\xf1': 'n',\n    '\\xd2': 'O',  '\\xd3': 'O', '\\xd4': 'O', '\\xd5': 'O', '\\xd6': 'O', '\\xd8': 'O',\n    '\\xf2': 'o',  '\\xf3': 'o', '\\xf4': 'o', '\\xf5': 'o', '\\xf6': 'o', '\\xf8': 'o',\n    '\\xd9': 'U',  '\\xda': 'U', '\\xdb': 'U', '\\xdc': 'U',\n    '\\xf9': 'u',  '\\xfa': 'u', '\\xfb': 'u', '\\xfc': 'u',\n    '\\xdd': 'Y',  '\\xfd': 'y', '\\xff': 'y',\n    '\\xc6': 'Ae', '\\xe6': 'ae',\n    '\\xde': 'Th', '\\xfe': 'th',\n    '\\xdf': 'ss',\n    // Latin Extended-A block.\n    '\\u0100': 'A',  '\\u0102': 'A', '\\u0104': 'A',\n    '\\u0101': 'a',  '\\u0103': 'a', '\\u0105': 'a',\n    '\\u0106': 'C',  '\\u0108': 'C', '\\u010a': 'C', '\\u010c': 'C',\n    '\\u0107': 'c',  '\\u0109': 'c', '\\u010b': 'c', '\\u010d': 'c',\n    '\\u010e': 'D',  '\\u0110': 'D', '\\u010f': 'd', '\\u0111': 'd',\n    '\\u0112': 'E',  '\\u0114': 'E', '\\u0116': 'E', '\\u0118': 'E', '\\u011a': 'E',\n    '\\u0113': 'e',  '\\u0115': 'e', '\\u0117': 'e', '\\u0119': 'e', '\\u011b': 'e',\n    '\\u011c': 'G',  '\\u011e': 'G', '\\u0120': 'G', '\\u0122': 'G',\n    '\\u011d': 'g',  '\\u011f': 'g', '\\u0121': 'g', '\\u0123': 'g',\n    '\\u0124': 'H',  '\\u0126': 'H', '\\u0125': 'h', '\\u0127': 'h',\n    '\\u0128': 'I',  '\\u012a': 'I', '\\u012c': 'I', '\\u012e': 'I', '\\u0130': 'I',\n    '\\u0129': 'i',  '\\u012b': 'i', '\\u012d': 'i', '\\u012f': 'i', '\\u0131': 'i',\n    '\\u0134': 'J',  '\\u0135': 'j',\n    '\\u0136': 'K',  '\\u0137': 'k', '\\u0138': 'k',\n    '\\u0139': 'L',  '\\u013b': 'L', '\\u013d': 'L', '\\u013f': 'L', '\\u0141': 'L',\n    '\\u013a': 'l',  '\\u013c': 'l', '\\u013e': 'l', '\\u0140': 'l', '\\u0142': 'l',\n    '\\u0143': 'N',  '\\u0145': 'N', '\\u0147': 'N', '\\u014a': 'N',\n    '\\u0144': 'n',  '\\u0146': 'n', '\\u0148': 'n', '\\u014b': 'n',\n    '\\u014c': 'O',  '\\u014e': 'O', '\\u0150': 'O',\n    '\\u014d': 'o',  '\\u014f': 'o', '\\u0151': 'o',\n    '\\u0154': 'R',  '\\u0156': 'R', '\\u0158': 'R',\n    '\\u0155': 'r',  '\\u0157': 'r', '\\u0159': 'r',\n    '\\u015a': 'S',  '\\u015c': 'S', '\\u015e': 'S', '\\u0160': 'S',\n    '\\u015b': 's',  '\\u015d': 's', '\\u015f': 's', '\\u0161': 's',\n    '\\u0162': 'T',  '\\u0164': 'T', '\\u0166': 'T',\n    '\\u0163': 't',  '\\u0165': 't', '\\u0167': 't',\n    '\\u0168': 'U',  '\\u016a': 'U', '\\u016c': 'U', '\\u016e': 'U', '\\u0170': 'U', '\\u0172': 'U',\n    '\\u0169': 'u',  '\\u016b': 'u', '\\u016d': 'u', '\\u016f': 'u', '\\u0171': 'u', '\\u0173': 'u',\n    '\\u0174': 'W',  '\\u0175': 'w',\n    '\\u0176': 'Y',  '\\u0177': 'y', '\\u0178': 'Y',\n    '\\u0179': 'Z',  '\\u017b': 'Z', '\\u017d': 'Z',\n    '\\u017a': 'z',  '\\u017c': 'z', '\\u017e': 'z',\n    '\\u0132': 'IJ', '\\u0133': 'ij',\n    '\\u0152': 'Oe', '\\u0153': 'oe',\n    '\\u0149': \"'n\", '\\u017f': 's'\n  };\n\n  /** Used to map characters to HTML entities. */\n  var htmlEscapes = {\n    '&': '&amp;',\n    '<': '&lt;',\n    '>': '&gt;',\n    '\"': '&quot;',\n    \"'\": '&#39;'\n  };\n\n  /** Used to map HTML entities to characters. */\n  var htmlUnescapes = {\n    '&amp;': '&',\n    '&lt;': '<',\n    '&gt;': '>',\n    '&quot;': '\"',\n    '&#39;': \"'\"\n  };\n\n  /** Used to escape characters for inclusion in compiled string literals. */\n  var stringEscapes = {\n    '\\\\': '\\\\',\n    \"'\": \"'\",\n    '\\n': 'n',\n    '\\r': 'r',\n    '\\u2028': 'u2028',\n    '\\u2029': 'u2029'\n  };\n\n  /** Built-in method references without a dependency on `root`. */\n  var freeParseFloat = parseFloat,\n      freeParseInt = parseInt;\n\n  /** Detect free variable `global` from Node.js. */\n  var freeGlobal = typeof global == 'object' && global && global.Object === Object && global;\n\n  /** Detect free variable `self`. */\n  var freeSelf = typeof self == 'object' && self && self.Object === Object && self;\n\n  /** Used as a reference to the global object. */\n  var root = freeGlobal || freeSelf || Function('return this')();\n\n  /** Detect free variable `exports`. */\n  var freeExports = typeof exports == 'object' && exports && !exports.nodeType && exports;\n\n  /** Detect free variable `module`. */\n  var freeModule = freeExports && typeof module == 'object' && module && !module.nodeType && module;\n\n  /** Detect the popular CommonJS extension `module.exports`. */\n  var moduleExports = freeModule && freeModule.exports === freeExports;\n\n  /** Detect free variable `process` from Node.js. */\n  var freeProcess = moduleExports && freeGlobal.process;\n\n  /** Used to access faster Node.js helpers. */\n  var nodeUtil = (function() {\n    try {\n      // Use `util.types` for Node.js 10+.\n      var types = freeModule && freeModule.require && freeModule.require('util').types;\n\n      if (types) {\n        return types;\n      }\n\n      // Legacy `process.binding('util')` for Node.js < 10.\n      return freeProcess && freeProcess.binding && freeProcess.binding('util');\n    } catch (e) {}\n  }());\n\n  /* Node.js helper references. */\n  var nodeIsArrayBuffer = nodeUtil && nodeUtil.isArrayBuffer,\n      nodeIsDate = nodeUtil && nodeUtil.isDate,\n      nodeIsMap = nodeUtil && nodeUtil.isMap,\n      nodeIsRegExp = nodeUtil && nodeUtil.isRegExp,\n      nodeIsSet = nodeUtil && nodeUtil.isSet,\n      nodeIsTypedArray = nodeUtil && nodeUtil.isTypedArray;\n\n  /*--------------------------------------------------------------------------*/\n\n  /**\n   * A faster alternative to `Function#apply`, this function invokes `func`\n   * with the `this` binding of `thisArg` and the arguments of `args`.\n   *\n   * @private\n   * @param {Function} func The function to invoke.\n   * @param {*} thisArg The `this` binding of `func`.\n   * @param {Array} args The arguments to invoke `func` with.\n   * @returns {*} Returns the result of `func`.\n   */\n  function apply(func, thisArg, args) {\n    switch (args.length) {\n      case 0: return func.call(thisArg);\n      case 1: return func.call(thisArg, args[0]);\n      case 2: return func.call(thisArg, args[0], args[1]);\n      case 3: return func.call(thisArg, args[0], args[1], args[2]);\n    }\n    return func.apply(thisArg, args);\n  }\n\n  /**\n   * A specialized version of `baseAggregator` for arrays.\n   *\n   * @private\n   * @param {Array} [array] The array to iterate over.\n   * @param {Function} setter The function to set `accumulator` values.\n   * @param {Function} iteratee The iteratee to transform keys.\n   * @param {Object} accumulator The initial aggregated object.\n   * @returns {Function} Returns `accumulator`.\n   */\n  function arrayAggregator(array, setter, iteratee, accumulator) {\n    var index = -1,\n        length = array == null ? 0 : array.length;\n\n    while (++index < length) {\n      var value = array[index];\n      setter(accumulator, value, iteratee(value), array);\n    }\n    return accumulator;\n  }\n\n  /**\n   * A specialized version of `_.forEach` for arrays without support for\n   * iteratee shorthands.\n   *\n   * @private\n   * @param {Array} [array] The array to iterate over.\n   * @param {Function} iteratee The function invoked per iteration.\n   * @returns {Array} Returns `array`.\n   */\n  function arrayEach(array, iteratee) {\n    var index = -1,\n        length = array == null ? 0 : array.length;\n\n    while (++index < length) {\n      if (iteratee(array[index], index, array) === false) {\n        break;\n      }\n    }\n    return array;\n  }\n\n  /**\n   * A specialized version of `_.forEachRight` for arrays without support for\n   * iteratee shorthands.\n   *\n   * @private\n   * @param {Array} [array] The array to iterate over.\n   * @param {Function} iteratee The function invoked per iteration.\n   * @returns {Array} Returns `array`.\n   */\n  function arrayEachRight(array, iteratee) {\n    var length = array == null ? 0 : array.length;\n\n    while (length--) {\n      if (iteratee(array[length], length, array) === false) {\n        break;\n      }\n    }\n    return array;\n  }\n\n  /**\n   * A specialized version of `_.every` for arrays without support for\n   * iteratee shorthands.\n   *\n   * @private\n   * @param {Array} [array] The array to iterate over.\n   * @param {Function} predicate The function invoked per iteration.\n   * @returns {boolean} Returns `true` if all elements pass the predicate check,\n   *  else `false`.\n   */\n  function arrayEvery(array, predicate) {\n    var index = -1,\n        length = array == null ? 0 : array.length;\n\n    while (++index < length) {\n      if (!predicate(array[index], index, array)) {\n        return false;\n      }\n    }\n    return true;\n  }\n\n  /**\n   * A specialized version of `_.filter` for arrays without support for\n   * iteratee shorthands.\n   *\n   * @private\n   * @param {Array} [array] The array to iterate over.\n   * @param {Function} predicate The function invoked per iteration.\n   * @returns {Array} Returns the new filtered array.\n   */\n  function arrayFilter(array, predicate) {\n    var index = -1,\n        length = array == null ? 0 : array.length,\n        resIndex = 0,\n        result = [];\n\n    while (++index < length) {\n      var value = array[index];\n      if (predicate(value, index, array)) {\n        result[resIndex++] = value;\n      }\n    }\n    return result;\n  }\n\n  /**\n   * A specialized version of `_.includes` for arrays without support for\n   * specifying an index to search from.\n   *\n   * @private\n   * @param {Array} [array] The array to inspect.\n   * @param {*} target The value to search for.\n   * @returns {boolean} Returns `true` if `target` is found, else `false`.\n   */\n  function arrayIncludes(array, value) {\n    var length = array == null ? 0 : array.length;\n    return !!length && baseIndexOf(array, value, 0) > -1;\n  }\n\n  /**\n   * This function is like `arrayIncludes` except that it accepts a comparator.\n   *\n   * @private\n   * @param {Array} [array] The array to inspect.\n   * @param {*} target The value to search for.\n   * @param {Function} comparator The comparator invoked per element.\n   * @returns {boolean} Returns `true` if `target` is found, else `false`.\n   */\n  function arrayIncludesWith(array, value, comparator) {\n    var index = -1,\n        length = array == null ? 0 : array.length;\n\n    while (++index < length) {\n      if (comparator(value, array[index])) {\n        return true;\n      }\n    }\n    return false;\n  }\n\n  /**\n   * A specialized version of `_.map` for arrays without support for iteratee\n   * shorthands.\n   *\n   * @private\n   * @param {Array} [array] The array to iterate over.\n   * @param {Function} iteratee The function invoked per iteration.\n   * @returns {Array} Returns the new mapped array.\n   */\n  function arrayMap(array, iteratee) {\n    var index = -1,\n        length = array == null ? 0 : array.length,\n        result = Array(length);\n\n    while (++index < length) {\n      result[index] = iteratee(array[index], index, array);\n    }\n    return result;\n  }\n\n  /**\n   * Appends the elements of `values` to `array`.\n   *\n   * @private\n   * @param {Array} array The array to modify.\n   * @param {Array} values The values to append.\n   * @returns {Array} Returns `array`.\n   */\n  function arrayPush(array, values) {\n    var index = -1,\n        length = values.length,\n        offset = array.length;\n\n    while (++index < length) {\n      array[offset + index] = values[index];\n    }\n    return array;\n  }\n\n  /**\n   * A specialized version of `_.reduce` for arrays without support for\n   * iteratee shorthands.\n   *\n   * @private\n   * @param {Array} [array] The array to iterate over.\n   * @param {Function} iteratee The function invoked per iteration.\n   * @param {*} [accumulator] The initial value.\n   * @param {boolean} [initAccum] Specify using the first element of `array` as\n   *  the initial value.\n   * @returns {*} Returns the accumulated value.\n   */\n  function arrayReduce(array, iteratee, accumulator, initAccum) {\n    var index = -1,\n        length = array == null ? 0 : array.length;\n\n    if (initAccum && length) {\n      accumulator = array[++index];\n    }\n    while (++index < length) {\n      accumulator = iteratee(accumulator, array[index], index, array);\n    }\n    return accumulator;\n  }\n\n  /**\n   * A specialized version of `_.reduceRight` for arrays without support for\n   * iteratee shorthands.\n   *\n   * @private\n   * @param {Array} [array] The array to iterate over.\n   * @param {Function} iteratee The function invoked per iteration.\n   * @param {*} [accumulator] The initial value.\n   * @param {boolean} [initAccum] Specify using the last element of `array` as\n   *  the initial value.\n   * @returns {*} Returns the accumulated value.\n   */\n  function arrayReduceRight(array, iteratee, accumulator, initAccum) {\n    var length = array == null ? 0 : array.length;\n    if (initAccum && length) {\n      accumulator = array[--length];\n    }\n    while (length--) {\n      accumulator = iteratee(accumulator, array[length], length, array);\n    }\n    return accumulator;\n  }\n\n  /**\n   * A specialized version of `_.some` for arrays without support for iteratee\n   * shorthands.\n   *\n   * @private\n   * @param {Array} [array] The array to iterate over.\n   * @param {Function} predicate The function invoked per iteration.\n   * @returns {boolean} Returns `true` if any element passes the predicate check,\n   *  else `false`.\n   */\n  function arraySome(array, predicate) {\n    var index = -1,\n        length = array == null ? 0 : array.length;\n\n    while (++index < length) {\n      if (predicate(array[index], index, array)) {\n        return true;\n      }\n    }\n    return false;\n  }\n\n  /**\n   * Gets the size of an ASCII `string`.\n   *\n   * @private\n   * @param {string} string The string inspect.\n   * @returns {number} Returns the string size.\n   */\n  var asciiSize = baseProperty('length');\n\n  /**\n   * Converts an ASCII `string` to an array.\n   *\n   * @private\n   * @param {string} string The string to convert.\n   * @returns {Array} Returns the converted array.\n   */\n  function asciiToArray(string) {\n    return string.split('');\n  }\n\n  /**\n   * Splits an ASCII `string` into an array of its words.\n   *\n   * @private\n   * @param {string} The string to inspect.\n   * @returns {Array} Returns the words of `string`.\n   */\n  function asciiWords(string) {\n    return string.match(reAsciiWord) || [];\n  }\n\n  /**\n   * The base implementation of methods like `_.findKey` and `_.findLastKey`,\n   * without support for iteratee shorthands, which iterates over `collection`\n   * using `eachFunc`.\n   *\n   * @private\n   * @param {Array|Object} collection The collection to inspect.\n   * @param {Function} predicate The function invoked per iteration.\n   * @param {Function} eachFunc The function to iterate over `collection`.\n   * @returns {*} Returns the found element or its key, else `undefined`.\n   */\n  function baseFindKey(collection, predicate, eachFunc) {\n    var result;\n    eachFunc(collection, function(value, key, collection) {\n      if (predicate(value, key, collection)) {\n        result = key;\n        return false;\n      }\n    });\n    return result;\n  }\n\n  /**\n   * The base implementation of `_.findIndex` and `_.findLastIndex` without\n   * support for iteratee shorthands.\n   *\n   * @private\n   * @param {Array} array The array to inspect.\n   * @param {Function} predicate The function invoked per iteration.\n   * @param {number} fromIndex The index to search from.\n   * @param {boolean} [fromRight] Specify iterating from right to left.\n   * @returns {number} Returns the index of the matched value, else `-1`.\n   */\n  function baseFindIndex(array, predicate, fromIndex, fromRight) {\n    var length = array.length,\n        index = fromIndex + (fromRight ? 1 : -1);\n\n    while ((fromRight ? index-- : ++index < length)) {\n      if (predicate(array[index], index, array)) {\n        return index;\n      }\n    }\n    return -1;\n  }\n\n  /**\n   * The base implementation of `_.indexOf` without `fromIndex` bounds checks.\n   *\n   * @private\n   * @param {Array} array The array to inspect.\n   * @param {*} value The value to search for.\n   * @param {number} fromIndex The index to search from.\n   * @returns {number} Returns the index of the matched value, else `-1`.\n   */\n  function baseIndexOf(array, value, fromIndex) {\n    return value === value\n      ? strictIndexOf(array, value, fromIndex)\n      : baseFindIndex(array, baseIsNaN, fromIndex);\n  }\n\n  /**\n   * This function is like `baseIndexOf` except that it accepts a comparator.\n   *\n   * @private\n   * @param {Array} array The array to inspect.\n   * @param {*} value The value to search for.\n   * @param {number} fromIndex The index to search from.\n   * @param {Function} comparator The comparator invoked per element.\n   * @returns {number} Returns the index of the matched value, else `-1`.\n   */\n  function baseIndexOfWith(array, value, fromIndex, comparator) {\n    var index = fromIndex - 1,\n        length = array.length;\n\n    while (++index < length) {\n      if (comparator(array[index], value)) {\n        return index;\n      }\n    }\n    return -1;\n  }\n\n  /**\n   * The base implementation of `_.isNaN` without support for number objects.\n   *\n   * @private\n   * @param {*} value The value to check.\n   * @returns {boolean} Returns `true` if `value` is `NaN`, else `false`.\n   */\n  function baseIsNaN(value) {\n    return value !== value;\n  }\n\n  /**\n   * The base implementation of `_.mean` and `_.meanBy` without support for\n   * iteratee shorthands.\n   *\n   * @private\n   * @param {Array} array The array to iterate over.\n   * @param {Function} iteratee The function invoked per iteration.\n   * @returns {number} Returns the mean.\n   */\n  function baseMean(array, iteratee) {\n    var length = array == null ? 0 : array.length;\n    return length ? (baseSum(array, iteratee) / length) : NAN;\n  }\n\n  /**\n   * The base implementation of `_.property` without support for deep paths.\n   *\n   * @private\n   * @param {string} key The key of the property to get.\n   * @returns {Function} Returns the new accessor function.\n   */\n  function baseProperty(key) {\n    return function(object) {\n      return object == null ? undefined : object[key];\n    };\n  }\n\n  /**\n   * The base implementation of `_.propertyOf` without support for deep paths.\n   *\n   * @private\n   * @param {Object} object The object to query.\n   * @returns {Function} Returns the new accessor function.\n   */\n  function basePropertyOf(object) {\n    return function(key) {\n      return object == null ? undefined : object[key];\n    };\n  }\n\n  /**\n   * The base implementation of `_.reduce` and `_.reduceRight`, without support\n   * for iteratee shorthands, which iterates over `collection` using `eachFunc`.\n   *\n   * @private\n   * @param {Array|Object} collection The collection to iterate over.\n   * @param {Function} iteratee The function invoked per iteration.\n   * @param {*} accumulator The initial value.\n   * @param {boolean} initAccum Specify using the first or last element of\n   *  `collection` as the initial value.\n   * @param {Function} eachFunc The function to iterate over `collection`.\n   * @returns {*} Returns the accumulated value.\n   */\n  function baseReduce(collection, iteratee, accumulator, initAccum, eachFunc) {\n    eachFunc(collection, function(value, index, collection) {\n      accumulator = initAccum\n        ? (initAccum = false, value)\n        : iteratee(accumulator, value, index, collection);\n    });\n    return accumulator;\n  }\n\n  /**\n   * The base implementation of `_.sortBy` which uses `comparer` to define the\n   * sort order of `array` and replaces criteria objects with their corresponding\n   * values.\n   *\n   * @private\n   * @param {Array} array The array to sort.\n   * @param {Function} comparer The function to define sort order.\n   * @returns {Array} Returns `array`.\n   */\n  function baseSortBy(array, comparer) {\n    var length = array.length;\n\n    array.sort(comparer);\n    while (length--) {\n      array[length] = array[length].value;\n    }\n    return array;\n  }\n\n  /**\n   * The base implementation of `_.sum` and `_.sumBy` without support for\n   * iteratee shorthands.\n   *\n   * @private\n   * @param {Array} array The array to iterate over.\n   * @param {Function} iteratee The function invoked per iteration.\n   * @returns {number} Returns the sum.\n   */\n  function baseSum(array, iteratee) {\n    var result,\n        index = -1,\n        length = array.length;\n\n    while (++index < length) {\n      var current = iteratee(array[index]);\n      if (current !== undefined) {\n        result = result === undefined ? current : (result + current);\n      }\n    }\n    return result;\n  }\n\n  /**\n   * The base implementation of `_.times` without support for iteratee shorthands\n   * or max array length checks.\n   *\n   * @private\n   * @param {number} n The number of times to invoke `iteratee`.\n   * @param {Function} iteratee The function invoked per iteration.\n   * @returns {Array} Returns the array of results.\n   */\n  function baseTimes(n, iteratee) {\n    var index = -1,\n        result = Array(n);\n\n    while (++index < n) {\n      result[index] = iteratee(index);\n    }\n    return result;\n  }\n\n  /**\n   * The base implementation of `_.toPairs` and `_.toPairsIn` which creates an array\n   * of key-value pairs for `object` corresponding to the property names of `props`.\n   *\n   * @private\n   * @param {Object} object The object to query.\n   * @param {Array} props The property names to get values for.\n   * @returns {Object} Returns the key-value pairs.\n   */\n  function baseToPairs(object, props) {\n    return arrayMap(props, function(key) {\n      return [key, object[key]];\n    });\n  }\n\n  /**\n   * The base implementation of `_.trim`.\n   *\n   * @private\n   * @param {string} string The string to trim.\n   * @returns {string} Returns the trimmed string.\n   */\n  function baseTrim(string) {\n    return string\n      ? string.slice(0, trimmedEndIndex(string) + 1).replace(reTrimStart, '')\n      : string;\n  }\n\n  /**\n   * The base implementation of `_.unary` without support for storing metadata.\n   *\n   * @private\n   * @param {Function} func The function to cap arguments for.\n   * @returns {Function} Returns the new capped function.\n   */\n  function baseUnary(func) {\n    return function(value) {\n      return func(value);\n    };\n  }\n\n  /**\n   * The base implementation of `_.values` and `_.valuesIn` which creates an\n   * array of `object` property values corresponding to the property names\n   * of `props`.\n   *\n   * @private\n   * @param {Object} object The object to query.\n   * @param {Array} props The property names to get values for.\n   * @returns {Object} Returns the array of property values.\n   */\n  function baseValues(object, props) {\n    return arrayMap(props, function(key) {\n      return object[key];\n    });\n  }\n\n  /**\n   * Checks if a `cache` value for `key` exists.\n   *\n   * @private\n   * @param {Object} cache The cache to query.\n   * @param {string} key The key of the entry to check.\n   * @returns {boolean} Returns `true` if an entry for `key` exists, else `false`.\n   */\n  function cacheHas(cache, key) {\n    return cache.has(key);\n  }\n\n  /**\n   * Used by `_.trim` and `_.trimStart` to get the index of the first string symbol\n   * that is not found in the character symbols.\n   *\n   * @private\n   * @param {Array} strSymbols The string symbols to inspect.\n   * @param {Array} chrSymbols The character symbols to find.\n   * @returns {number} Returns the index of the first unmatched string symbol.\n   */\n  function charsStartIndex(strSymbols, chrSymbols) {\n    var index = -1,\n        length = strSymbols.length;\n\n    while (++index < length && baseIndexOf(chrSymbols, strSymbols[index], 0) > -1) {}\n    return index;\n  }\n\n  /**\n   * Used by `_.trim` and `_.trimEnd` to get the index of the last string symbol\n   * that is not found in the character symbols.\n   *\n   * @private\n   * @param {Array} strSymbols The string symbols to inspect.\n   * @param {Array} chrSymbols The character symbols to find.\n   * @returns {number} Returns the index of the last unmatched string symbol.\n   */\n  function charsEndIndex(strSymbols, chrSymbols) {\n    var index = strSymbols.length;\n\n    while (index-- && baseIndexOf(chrSymbols, strSymbols[index], 0) > -1) {}\n    return index;\n  }\n\n  /**\n   * Gets the number of `placeholder` occurrences in `array`.\n   *\n   * @private\n   * @param {Array} array The array to inspect.\n   * @param {*} placeholder The placeholder to search for.\n   * @returns {number} Returns the placeholder count.\n   */\n  function countHolders(array, placeholder) {\n    var length = array.length,\n        result = 0;\n\n    while (length--) {\n      if (array[length] === placeholder) {\n        ++result;\n      }\n    }\n    return result;\n  }\n\n  /**\n   * Used by `_.deburr` to convert Latin-1 Supplement and Latin Extended-A\n   * letters to basic Latin letters.\n   *\n   * @private\n   * @param {string} letter The matched letter to deburr.\n   * @returns {string} Returns the deburred letter.\n   */\n  var deburrLetter = basePropertyOf(deburredLetters);\n\n  /**\n   * Used by `_.escape` to convert characters to HTML entities.\n   *\n   * @private\n   * @param {string} chr The matched character to escape.\n   * @returns {string} Returns the escaped character.\n   */\n  var escapeHtmlChar = basePropertyOf(htmlEscapes);\n\n  /**\n   * Used by `_.template` to escape characters for inclusion in compiled string literals.\n   *\n   * @private\n   * @param {string} chr The matched character to escape.\n   * @returns {string} Returns the escaped character.\n   */\n  function escapeStringChar(chr) {\n    return '\\\\' + stringEscapes[chr];\n  }\n\n  /**\n   * Gets the value at `key` of `object`.\n   *\n   * @private\n   * @param {Object} [object] The object to query.\n   * @param {string} key The key of the property to get.\n   * @returns {*} Returns the property value.\n   */\n  function getValue(object, key) {\n    return object == null ? undefined : object[key];\n  }\n\n  /**\n   * Checks if `string` contains Unicode symbols.\n   *\n   * @private\n   * @param {string} string The string to inspect.\n   * @returns {boolean} Returns `true` if a symbol is found, else `false`.\n   */\n  function hasUnicode(string) {\n    return reHasUnicode.test(string);\n  }\n\n  /**\n   * Checks if `string` contains a word composed of Unicode symbols.\n   *\n   * @private\n   * @param {string} string The string to inspect.\n   * @returns {boolean} Returns `true` if a word is found, else `false`.\n   */\n  function hasUnicodeWord(string) {\n    return reHasUnicodeWord.test(string);\n  }\n\n  /**\n   * Converts `iterator` to an array.\n   *\n   * @private\n   * @param {Object} iterator The iterator to convert.\n   * @returns {Array} Returns the converted array.\n   */\n  function iteratorToArray(iterator) {\n    var data,\n        result = [];\n\n    while (!(data = iterator.next()).done) {\n      result.push(data.value);\n    }\n    return result;\n  }\n\n  /**\n   * Converts `map` to its key-value pairs.\n   *\n   * @private\n   * @param {Object} map The map to convert.\n   * @returns {Array} Returns the key-value pairs.\n   */\n  function mapToArray(map) {\n    var index = -1,\n        result = Array(map.size);\n\n    map.forEach(function(value, key) {\n      result[++index] = [key, value];\n    });\n    return result;\n  }\n\n  /**\n   * Creates a unary function that invokes `func` with its argument transformed.\n   *\n   * @private\n   * @param {Function} func The function to wrap.\n   * @param {Function} transform The argument transform.\n   * @returns {Function} Returns the new function.\n   */\n  function overArg(func, transform) {\n    return function(arg) {\n      return func(transform(arg));\n    };\n  }\n\n  /**\n   * Replaces all `placeholder` elements in `array` with an internal placeholder\n   * and returns an array of their indexes.\n   *\n   * @private\n   * @param {Array} array The array to modify.\n   * @param {*} placeholder The placeholder to replace.\n   * @returns {Array} Returns the new array of placeholder indexes.\n   */\n  function replaceHolders(array, placeholder) {\n    var index = -1,\n        length = array.length,\n        resIndex = 0,\n        result = [];\n\n    while (++index < length) {\n      var value = array[index];\n      if (value === placeholder || value === PLACEHOLDER) {\n        array[index] = PLACEHOLDER;\n        result[resIndex++] = index;\n      }\n    }\n    return result;\n  }\n\n  /**\n   * Converts `set` to an array of its values.\n   *\n   * @private\n   * @param {Object} set The set to convert.\n   * @returns {Array} Returns the values.\n   */\n  function setToArray(set) {\n    var index = -1,\n        result = Array(set.size);\n\n    set.forEach(function(value) {\n      result[++index] = value;\n    });\n    return result;\n  }\n\n  /**\n   * Converts `set` to its value-value pairs.\n   *\n   * @private\n   * @param {Object} set The set to convert.\n   * @returns {Array} Returns the value-value pairs.\n   */\n  function setToPairs(set) {\n    var index = -1,\n        result = Array(set.size);\n\n    set.forEach(function(value) {\n      result[++index] = [value, value];\n    });\n    return result;\n  }\n\n  /**\n   * A specialized version of `_.indexOf` which performs strict equality\n   * comparisons of values, i.e. `===`.\n   *\n   * @private\n   * @param {Array} array The array to inspect.\n   * @param {*} value The value to search for.\n   * @param {number} fromIndex The index to search from.\n   * @returns {number} Returns the index of the matched value, else `-1`.\n   */\n  function strictIndexOf(array, value, fromIndex) {\n    var index = fromIndex - 1,\n        length = array.length;\n\n    while (++index < length) {\n      if (array[index] === value) {\n        return index;\n      }\n    }\n    return -1;\n  }\n\n  /**\n   * A specialized version of `_.lastIndexOf` which performs strict equality\n   * comparisons of values, i.e. `===`.\n   *\n   * @private\n   * @param {Array} array The array to inspect.\n   * @param {*} value The value to search for.\n   * @param {number} fromIndex The index to search from.\n   * @returns {number} Returns the index of the matched value, else `-1`.\n   */\n  function strictLastIndexOf(array, value, fromIndex) {\n    var index = fromIndex + 1;\n    while (index--) {\n      if (array[index] === value) {\n        return index;\n      }\n    }\n    return index;\n  }\n\n  /**\n   * Gets the number of symbols in `string`.\n   *\n   * @private\n   * @param {string} string The string to inspect.\n   * @returns {number} Returns the string size.\n   */\n  function stringSize(string) {\n    return hasUnicode(string)\n      ? unicodeSize(string)\n      : asciiSize(string);\n  }\n\n  /**\n   * Converts `string` to an array.\n   *\n   * @private\n   * @param {string} string The string to convert.\n   * @returns {Array} Returns the converted array.\n   */\n  function stringToArray(string) {\n    return hasUnicode(string)\n      ? unicodeToArray(string)\n      : asciiToArray(string);\n  }\n\n  /**\n   * Used by `_.trim` and `_.trimEnd` to get the index of the last non-whitespace\n   * character of `string`.\n   *\n   * @private\n   * @param {string} string The string to inspect.\n   * @returns {number} Returns the index of the last non-whitespace character.\n   */\n  function trimmedEndIndex(string) {\n    var index = string.length;\n\n    while (index-- && reWhitespace.test(string.charAt(index))) {}\n    return index;\n  }\n\n  /**\n   * Used by `_.unescape` to convert HTML entities to characters.\n   *\n   * @private\n   * @param {string} chr The matched character to unescape.\n   * @returns {string} Returns the unescaped character.\n   */\n  var unescapeHtmlChar = basePropertyOf(htmlUnescapes);\n\n  /**\n   * Gets the size of a Unicode `string`.\n   *\n   * @private\n   * @param {string} string The string inspect.\n   * @returns {number} Returns the string size.\n   */\n  function unicodeSize(string) {\n    var result = reUnicode.lastIndex = 0;\n    while (reUnicode.test(string)) {\n      ++result;\n    }\n    return result;\n  }\n\n  /**\n   * Converts a Unicode `string` to an array.\n   *\n   * @private\n   * @param {string} string The string to convert.\n   * @returns {Array} Returns the converted array.\n   */\n  function unicodeToArray(string) {\n    return string.match(reUnicode) || [];\n  }\n\n  /**\n   * Splits a Unicode `string` into an array of its words.\n   *\n   * @private\n   * @param {string} The string to inspect.\n   * @returns {Array} Returns the words of `string`.\n   */\n  function unicodeWords(string) {\n    return string.match(reUnicodeWord) || [];\n  }\n\n  /*--------------------------------------------------------------------------*/\n\n  /**\n   * Create a new pristine `lodash` function using the `context` object.\n   *\n   * @static\n   * @memberOf _\n   * @since 1.1.0\n   * @category Util\n   * @param {Object} [context=root] The context object.\n   * @returns {Function} Returns a new `lodash` function.\n   * @example\n   *\n   * _.mixin({ 'foo': _.constant('foo') });\n   *\n   * var lodash = _.runInContext();\n   * lodash.mixin({ 'bar': lodash.constant('bar') });\n   *\n   * _.isFunction(_.foo);\n   * // => true\n   * _.isFunction(_.bar);\n   * // => false\n   *\n   * lodash.isFunction(lodash.foo);\n   * // => false\n   * lodash.isFunction(lodash.bar);\n   * // => true\n   *\n   * // Create a suped-up `defer` in Node.js.\n   * var defer = _.runInContext({ 'setTimeout': setImmediate }).defer;\n   */\n  var runInContext = (function runInContext(context) {\n    context = context == null ? root : _.defaults(root.Object(), context, _.pick(root, contextProps));\n\n    /** Built-in constructor references. */\n    var Array = context.Array,\n        Date = context.Date,\n        Error = context.Error,\n        Function = context.Function,\n        Math = context.Math,\n        Object = context.Object,\n        RegExp = context.RegExp,\n        String = context.String,\n        TypeError = context.TypeError;\n\n    /** Used for built-in method references. */\n    var arrayProto = Array.prototype,\n        funcProto = Function.prototype,\n        objectProto = Object.prototype;\n\n    /** Used to detect overreaching core-js shims. */\n    var coreJsData = context['__core-js_shared__'];\n\n    /** Used to resolve the decompiled source of functions. */\n    var funcToString = funcProto.toString;\n\n    /** Used to check objects for own properties. */\n    var hasOwnProperty = objectProto.hasOwnProperty;\n\n    /** Used to generate unique IDs. */\n    var idCounter = 0;\n\n    /** Used to detect methods masquerading as native. */\n    var maskSrcKey = (function() {\n      var uid = /[^.]+$/.exec(coreJsData && coreJsData.keys && coreJsData.keys.IE_PROTO || '');\n      return uid ? ('Symbol(src)_1.' + uid) : '';\n    }());\n\n    /**\n     * Used to resolve the\n     * [`toStringTag`](http://ecma-international.org/ecma-262/7.0/#sec-object.prototype.tostring)\n     * of values.\n     */\n    var nativeObjectToString = objectProto.toString;\n\n    /** Used to infer the `Object` constructor. */\n    var objectCtorString = funcToString.call(Object);\n\n    /** Used to restore the original `_` reference in `_.noConflict`. */\n    var oldDash = root._;\n\n    /** Used to detect if a method is native. */\n    var reIsNative = RegExp('^' +\n      funcToString.call(hasOwnProperty).replace(reRegExpChar, '\\\\$&')\n      .replace(/hasOwnProperty|(function).*?(?=\\\\\\()| for .+?(?=\\\\\\])/g, '$1.*?') + '$'\n    );\n\n    /** Built-in value references. */\n    var Buffer = moduleExports ? context.Buffer : undefined,\n        Symbol = context.Symbol,\n        Uint8Array = context.Uint8Array,\n        allocUnsafe = Buffer ? Buffer.allocUnsafe : undefined,\n        getPrototype = overArg(Object.getPrototypeOf, Object),\n        objectCreate = Object.create,\n        propertyIsEnumerable = objectProto.propertyIsEnumerable,\n        splice = arrayProto.splice,\n        spreadableSymbol = Symbol ? Symbol.isConcatSpreadable : undefined,\n        symIterator = Symbol ? Symbol.iterator : undefined,\n        symToStringTag = Symbol ? Symbol.toStringTag : undefined;\n\n    var defineProperty = (function() {\n      try {\n        var func = getNative(Object, 'defineProperty');\n        func({}, '', {});\n        return func;\n      } catch (e) {}\n    }());\n\n    /** Mocked built-ins. */\n    var ctxClearTimeout = context.clearTimeout !== root.clearTimeout && context.clearTimeout,\n        ctxNow = Date && Date.now !== root.Date.now && Date.now,\n        ctxSetTimeout = context.setTimeout !== root.setTimeout && context.setTimeout;\n\n    /* Built-in method references for those with the same name as other `lodash` methods. */\n    var nativeCeil = Math.ceil,\n        nativeFloor = Math.floor,\n        nativeGetSymbols = Object.getOwnPropertySymbols,\n        nativeIsBuffer = Buffer ? Buffer.isBuffer : undefined,\n        nativeIsFinite = context.isFinite,\n        nativeJoin = arrayProto.join,\n        nativeKeys = overArg(Object.keys, Object),\n        nativeMax = Math.max,\n        nativeMin = Math.min,\n        nativeNow = Date.now,\n        nativeParseInt = context.parseInt,\n        nativeRandom = Math.random,\n        nativeReverse = arrayProto.reverse;\n\n    /* Built-in method references that are verified to be native. */\n    var DataView = getNative(context, 'DataView'),\n        Map = getNative(context, 'Map'),\n        Promise = getNative(context, 'Promise'),\n        Set = getNative(context, 'Set'),\n        WeakMap = getNative(context, 'WeakMap'),\n        nativeCreate = getNative(Object, 'create');\n\n    /** Used to store function metadata. */\n    var metaMap = WeakMap && new WeakMap;\n\n    /** Used to lookup unminified function names. */\n    var realNames = {};\n\n    /** Used to detect maps, sets, and weakmaps. */\n    var dataViewCtorString = toSource(DataView),\n        mapCtorString = toSource(Map),\n        promiseCtorString = toSource(Promise),\n        setCtorString = toSource(Set),\n        weakMapCtorString = toSource(WeakMap);\n\n    /** Used to convert symbols to primitives and strings. */\n    var symbolProto = Symbol ? Symbol.prototype : undefined,\n        symbolValueOf = symbolProto ? symbolProto.valueOf : undefined,\n        symbolToString = symbolProto ? symbolProto.toString : undefined;\n\n    /*------------------------------------------------------------------------*/\n\n    /**\n     * Creates a `lodash` object which wraps `value` to enable implicit method\n     * chain sequences. Methods that operate on and return arrays, collections,\n     * and functions can be chained together. Methods that retrieve a single value\n     * or may return a primitive value will automatically end the chain sequence\n     * and return the unwrapped value. Otherwise, the value must be unwrapped\n     * with `_#value`.\n     *\n     * Explicit chain sequences, which must be unwrapped with `_#value`, may be\n     * enabled using `_.chain`.\n     *\n     * The execution of chained methods is lazy, that is, it's deferred until\n     * `_#value` is implicitly or explicitly called.\n     *\n     * Lazy evaluation allows several methods to support shortcut fusion.\n     * Shortcut fusion is an optimization to merge iteratee calls; this avoids\n     * the creation of intermediate arrays and can greatly reduce the number of\n     * iteratee executions. Sections of a chain sequence qualify for shortcut\n     * fusion if the section is applied to an array and iteratees accept only\n     * one argument. The heuristic for whether a section qualifies for shortcut\n     * fusion is subject to change.\n     *\n     * Chaining is supported in custom builds as long as the `_#value` method is\n     * directly or indirectly included in the build.\n     *\n     * In addition to lodash methods, wrappers have `Array` and `String` methods.\n     *\n     * The wrapper `Array` methods are:\n     * `concat`, `join`, `pop`, `push`, `shift`, `sort`, `splice`, and `unshift`\n     *\n     * The wrapper `String` methods are:\n     * `replace` and `split`\n     *\n     * The wrapper methods that support shortcut fusion are:\n     * `at`, `compact`, `drop`, `dropRight`, `dropWhile`, `filter`, `find`,\n     * `findLast`, `head`, `initial`, `last`, `map`, `reject`, `reverse`, `slice`,\n     * `tail`, `take`, `takeRight`, `takeRightWhile`, `takeWhile`, and `toArray`\n     *\n     * The chainable wrapper methods are:\n     * `after`, `ary`, `assign`, `assignIn`, `assignInWith`, `assignWith`, `at`,\n     * `before`, `bind`, `bindAll`, `bindKey`, `castArray`, `chain`, `chunk`,\n     * `commit`, `compact`, `concat`, `conforms`, `constant`, `countBy`, `create`,\n     * `curry`, `debounce`, `defaults`, `defaultsDeep`, `defer`, `delay`,\n     * `difference`, `differenceBy`, `differenceWith`, `drop`, `dropRight`,\n     * `dropRightWhile`, `dropWhile`, `extend`, `extendWith`, `fill`, `filter`,\n     * `flatMap`, `flatMapDeep`, `flatMapDepth`, `flatten`, `flattenDeep`,\n     * `flattenDepth`, `flip`, `flow`, `flowRight`, `fromPairs`, `functions`,\n     * `functionsIn`, `groupBy`, `initial`, `intersection`, `intersectionBy`,\n     * `intersectionWith`, `invert`, `invertBy`, `invokeMap`, `iteratee`, `keyBy`,\n     * `keys`, `keysIn`, `map`, `mapKeys`, `mapValues`, `matches`, `matchesProperty`,\n     * `memoize`, `merge`, `mergeWith`, `method`, `methodOf`, `mixin`, `negate`,\n     * `nthArg`, `omit`, `omitBy`, `once`, `orderBy`, `over`, `overArgs`,\n     * `overEvery`, `overSome`, `partial`, `partialRight`, `partition`, `pick`,\n     * `pickBy`, `plant`, `property`, `propertyOf`, `pull`, `pullAll`, `pullAllBy`,\n     * `pullAllWith`, `pullAt`, `push`, `range`, `rangeRight`, `rearg`, `reject`,\n     * `remove`, `rest`, `reverse`, `sampleSize`, `set`, `setWith`, `shuffle`,\n     * `slice`, `sort`, `sortBy`, `splice`, `spread`, `tail`, `take`, `takeRight`,\n     * `takeRightWhile`, `takeWhile`, `tap`, `throttle`, `thru`, `toArray`,\n     * `toPairs`, `toPairsIn`, `toPath`, `toPlainObject`, `transform`, `unary`,\n     * `union`, `unionBy`, `unionWith`, `uniq`, `uniqBy`, `uniqWith`, `unset`,\n     * `unshift`, `unzip`, `unzipWith`, `update`, `updateWith`, `values`,\n     * `valuesIn`, `without`, `wrap`, `xor`, `xorBy`, `xorWith`, `zip`,\n     * `zipObject`, `zipObjectDeep`, and `zipWith`\n     *\n     * The wrapper methods that are **not** chainable by default are:\n     * `add`, `attempt`, `camelCase`, `capitalize`, `ceil`, `clamp`, `clone`,\n     * `cloneDeep`, `cloneDeepWith`, `cloneWith`, `conformsTo`, `deburr`,\n     * `defaultTo`, `divide`, `each`, `eachRight`, `endsWith`, `eq`, `escape`,\n     * `escapeRegExp`, `every`, `find`, `findIndex`, `findKey`, `findLast`,\n     * `findLastIndex`, `findLastKey`, `first`, `floor`, `forEach`, `forEachRight`,\n     * `forIn`, `forInRight`, `forOwn`, `forOwnRight`, `get`, `gt`, `gte`, `has`,\n     * `hasIn`, `head`, `identity`, `includes`, `indexOf`, `inRange`, `invoke`,\n     * `isArguments`, `isArray`, `isArrayBuffer`, `isArrayLike`, `isArrayLikeObject`,\n     * `isBoolean`, `isBuffer`, `isDate`, `isElement`, `isEmpty`, `isEqual`,\n     * `isEqualWith`, `isError`, `isFinite`, `isFunction`, `isInteger`, `isLength`,\n     * `isMap`, `isMatch`, `isMatchWith`, `isNaN`, `isNative`, `isNil`, `isNull`,\n     * `isNumber`, `isObject`, `isObjectLike`, `isPlainObject`, `isRegExp`,\n     * `isSafeInteger`, `isSet`, `isString`, `isUndefined`, `isTypedArray`,\n     * `isWeakMap`, `isWeakSet`, `join`, `kebabCase`, `last`, `lastIndexOf`,\n     * `lowerCase`, `lowerFirst`, `lt`, `lte`, `max`, `maxBy`, `mean`, `meanBy`,\n     * `min`, `minBy`, `multiply`, `noConflict`, `noop`, `now`, `nth`, `pad`,\n     * `padEnd`, `padStart`, `parseInt`, `pop`, `random`, `reduce`, `reduceRight`,\n     * `repeat`, `result`, `round`, `runInContext`, `sample`, `shift`, `size`,\n     * `snakeCase`, `some`, `sortedIndex`, `sortedIndexBy`, `sortedLastIndex`,\n     * `sortedLastIndexBy`, `startCase`, `startsWith`, `stubArray`, `stubFalse`,\n     * `stubObject`, `stubString`, `stubTrue`, `subtract`, `sum`, `sumBy`,\n     * `template`, `times`, `toFinite`, `toInteger`, `toJSON`, `toLength`,\n     * `toLower`, `toNumber`, `toSafeInteger`, `toString`, `toUpper`, `trim`,\n     * `trimEnd`, `trimStart`, `truncate`, `unescape`, `uniqueId`, `upperCase`,\n     * `upperFirst`, `value`, and `words`\n     *\n     * @name _\n     * @constructor\n     * @category Seq\n     * @param {*} value The value to wrap in a `lodash` instance.\n     * @returns {Object} Returns the new `lodash` wrapper instance.\n     * @example\n     *\n     * function square(n) {\n     *   return n * n;\n     * }\n     *\n     * var wrapped = _([1, 2, 3]);\n     *\n     * // Returns an unwrapped value.\n     * wrapped.reduce(_.add);\n     * // => 6\n     *\n     * // Returns a wrapped value.\n     * var squares = wrapped.map(square);\n     *\n     * _.isArray(squares);\n     * // => false\n     *\n     * _.isArray(squares.value());\n     * // => true\n     */\n    function lodash(value) {\n      if (isObjectLike(value) && !isArray(value) && !(value instanceof LazyWrapper)) {\n        if (value instanceof LodashWrapper) {\n          return value;\n        }\n        if (hasOwnProperty.call(value, '__wrapped__')) {\n          return wrapperClone(value);\n        }\n      }\n      return new LodashWrapper(value);\n    }\n\n    /**\n     * The base implementation of `_.create` without support for assigning\n     * properties to the created object.\n     *\n     * @private\n     * @param {Object} proto The object to inherit from.\n     * @returns {Object} Returns the new object.\n     */\n    var baseCreate = (function() {\n      function object() {}\n      return function(proto) {\n        if (!isObject(proto)) {\n          return {};\n        }\n        if (objectCreate) {\n          return objectCreate(proto);\n        }\n        object.prototype = proto;\n        var result = new object;\n        object.prototype = undefined;\n        return result;\n      };\n    }());\n\n    /**\n     * The function whose prototype chain sequence wrappers inherit from.\n     *\n     * @private\n     */\n    function baseLodash() {\n      // No operation performed.\n    }\n\n    /**\n     * The base constructor for creating `lodash` wrapper objects.\n     *\n     * @private\n     * @param {*} value The value to wrap.\n     * @param {boolean} [chainAll] Enable explicit method chain sequences.\n     */\n    function LodashWrapper(value, chainAll) {\n      this.__wrapped__ = value;\n      this.__actions__ = [];\n      this.__chain__ = !!chainAll;\n      this.__index__ = 0;\n      this.__values__ = undefined;\n    }\n\n    /**\n     * By default, the template delimiters used by lodash are like those in\n     * embedded Ruby (ERB) as well as ES2015 template strings. Change the\n     * following template settings to use alternative delimiters.\n     *\n     * @static\n     * @memberOf _\n     * @type {Object}\n     */\n    lodash.templateSettings = {\n\n      /**\n       * Used to detect `data` property values to be HTML-escaped.\n       *\n       * @memberOf _.templateSettings\n       * @type {RegExp}\n       */\n      'escape': reEscape,\n\n      /**\n       * Used to detect code to be evaluated.\n       *\n       * @memberOf _.templateSettings\n       * @type {RegExp}\n       */\n      'evaluate': reEvaluate,\n\n      /**\n       * Used to detect `data` property values to inject.\n       *\n       * @memberOf _.templateSettings\n       * @type {RegExp}\n       */\n      'interpolate': reInterpolate,\n\n      /**\n       * Used to reference the data object in the template text.\n       *\n       * @memberOf _.templateSettings\n       * @type {string}\n       */\n      'variable': '',\n\n      /**\n       * Used to import variables into the compiled template.\n       *\n       * @memberOf _.templateSettings\n       * @type {Object}\n       */\n      'imports': {\n\n        /**\n         * A reference to the `lodash` function.\n         *\n         * @memberOf _.templateSettings.imports\n         * @type {Function}\n         */\n        '_': lodash\n      }\n    };\n\n    // Ensure wrappers are instances of `baseLodash`.\n    lodash.prototype = baseLodash.prototype;\n    lodash.prototype.constructor = lodash;\n\n    LodashWrapper.prototype = baseCreate(baseLodash.prototype);\n    LodashWrapper.prototype.constructor = LodashWrapper;\n\n    /*------------------------------------------------------------------------*/\n\n    /**\n     * Creates a lazy wrapper object which wraps `value` to enable lazy evaluation.\n     *\n     * @private\n     * @constructor\n     * @param {*} value The value to wrap.\n     */\n    function LazyWrapper(value) {\n      this.__wrapped__ = value;\n      this.__actions__ = [];\n      this.__dir__ = 1;\n      this.__filtered__ = false;\n      this.__iteratees__ = [];\n      this.__takeCount__ = MAX_ARRAY_LENGTH;\n      this.__views__ = [];\n    }\n\n    /**\n     * Creates a clone of the lazy wrapper object.\n     *\n     * @private\n     * @name clone\n     * @memberOf LazyWrapper\n     * @returns {Object} Returns the cloned `LazyWrapper` object.\n     */\n    function lazyClone() {\n      var result = new LazyWrapper(this.__wrapped__);\n      result.__actions__ = copyArray(this.__actions__);\n      result.__dir__ = this.__dir__;\n      result.__filtered__ = this.__filtered__;\n      result.__iteratees__ = copyArray(this.__iteratees__);\n      result.__takeCount__ = this.__takeCount__;\n      result.__views__ = copyArray(this.__views__);\n      return result;\n    }\n\n    /**\n     * Reverses the direction of lazy iteration.\n     *\n     * @private\n     * @name reverse\n     * @memberOf LazyWrapper\n     * @returns {Object} Returns the new reversed `LazyWrapper` object.\n     */\n    function lazyReverse() {\n      if (this.__filtered__) {\n        var result = new LazyWrapper(this);\n        result.__dir__ = -1;\n        result.__filtered__ = true;\n      } else {\n        result = this.clone();\n        result.__dir__ *= -1;\n      }\n      return result;\n    }\n\n    /**\n     * Extracts the unwrapped value from its lazy wrapper.\n     *\n     * @private\n     * @name value\n     * @memberOf LazyWrapper\n     * @returns {*} Returns the unwrapped value.\n     */\n    function lazyValue() {\n      var array = this.__wrapped__.value(),\n          dir = this.__dir__,\n          isArr = isArray(array),\n          isRight = dir < 0,\n          arrLength = isArr ? array.length : 0,\n          view = getView(0, arrLength, this.__views__),\n          start = view.start,\n          end = view.end,\n          length = end - start,\n          index = isRight ? end : (start - 1),\n          iteratees = this.__iteratees__,\n          iterLength = iteratees.length,\n          resIndex = 0,\n          takeCount = nativeMin(length, this.__takeCount__);\n\n      if (!isArr || (!isRight && arrLength == length && takeCount == length)) {\n        return baseWrapperValue(array, this.__actions__);\n      }\n      var result = [];\n\n      outer:\n      while (length-- && resIndex < takeCount) {\n        index += dir;\n\n        var iterIndex = -1,\n            value = array[index];\n\n        while (++iterIndex < iterLength) {\n          var data = iteratees[iterIndex],\n              iteratee = data.iteratee,\n              type = data.type,\n              computed = iteratee(value);\n\n          if (type == LAZY_MAP_FLAG) {\n            value = computed;\n          } else if (!computed) {\n            if (type == LAZY_FILTER_FLAG) {\n              continue outer;\n            } else {\n              break outer;\n            }\n          }\n        }\n        result[resIndex++] = value;\n      }\n      return result;\n    }\n\n    // Ensure `LazyWrapper` is an instance of `baseLodash`.\n    LazyWrapper.prototype = baseCreate(baseLodash.prototype);\n    LazyWrapper.prototype.constructor = LazyWrapper;\n\n    /*------------------------------------------------------------------------*/\n\n    /**\n     * Creates a hash object.\n     *\n     * @private\n     * @constructor\n     * @param {Array} [entries] The key-value pairs to cache.\n     */\n    function Hash(entries) {\n      var index = -1,\n          length = entries == null ? 0 : entries.length;\n\n      this.clear();\n      while (++index < length) {\n        var entry = entries[index];\n        this.set(entry[0], entry[1]);\n      }\n    }\n\n    /**\n     * Removes all key-value entries from the hash.\n     *\n     * @private\n     * @name clear\n     * @memberOf Hash\n     */\n    function hashClear() {\n      this.__data__ = nativeCreate ? nativeCreate(null) : {};\n      this.size = 0;\n    }\n\n    /**\n     * Removes `key` and its value from the hash.\n     *\n     * @private\n     * @name delete\n     * @memberOf Hash\n     * @param {Object} hash The hash to modify.\n     * @param {string} key The key of the value to remove.\n     * @returns {boolean} Returns `true` if the entry was removed, else `false`.\n     */\n    function hashDelete(key) {\n      var result = this.has(key) && delete this.__data__[key];\n      this.size -= result ? 1 : 0;\n      return result;\n    }\n\n    /**\n     * Gets the hash value for `key`.\n     *\n     * @private\n     * @name get\n     * @memberOf Hash\n     * @param {string} key The key of the value to get.\n     * @returns {*} Returns the entry value.\n     */\n    function hashGet(key) {\n      var data = this.__data__;\n      if (nativeCreate) {\n        var result = data[key];\n        return result === HASH_UNDEFINED ? undefined : result;\n      }\n      return hasOwnProperty.call(data, key) ? data[key] : undefined;\n    }\n\n    /**\n     * Checks if a hash value for `key` exists.\n     *\n     * @private\n     * @name has\n     * @memberOf Hash\n     * @param {string} key The key of the entry to check.\n     * @returns {boolean} Returns `true` if an entry for `key` exists, else `false`.\n     */\n    function hashHas(key) {\n      var data = this.__data__;\n      return nativeCreate ? (data[key] !== undefined) : hasOwnProperty.call(data, key);\n    }\n\n    /**\n     * Sets the hash `key` to `value`.\n     *\n     * @private\n     * @name set\n     * @memberOf Hash\n     * @param {string} key The key of the value to set.\n     * @param {*} value The value to set.\n     * @returns {Object} Returns the hash instance.\n     */\n    function hashSet(key, value) {\n      var data = this.__data__;\n      this.size += this.has(key) ? 0 : 1;\n      data[key] = (nativeCreate && value === undefined) ? HASH_UNDEFINED : value;\n      return this;\n    }\n\n    // Add methods to `Hash`.\n    Hash.prototype.clear = hashClear;\n    Hash.prototype['delete'] = hashDelete;\n    Hash.prototype.get = hashGet;\n    Hash.prototype.has = hashHas;\n    Hash.prototype.set = hashSet;\n\n    /*------------------------------------------------------------------------*/\n\n    /**\n     * Creates an list cache object.\n     *\n     * @private\n     * @constructor\n     * @param {Array} [entries] The key-value pairs to cache.\n     */\n    function ListCache(entries) {\n      var index = -1,\n          length = entries == null ? 0 : entries.length;\n\n      this.clear();\n      while (++index < length) {\n        var entry = entries[index];\n        this.set(entry[0], entry[1]);\n      }\n    }\n\n    /**\n     * Removes all key-value entries from the list cache.\n     *\n     * @private\n     * @name clear\n     * @memberOf ListCache\n     */\n    function listCacheClear() {\n      this.__data__ = [];\n      this.size = 0;\n    }\n\n    /**\n     * Removes `key` and its value from the list cache.\n     *\n     * @private\n     * @name delete\n     * @memberOf ListCache\n     * @param {string} key The key of the value to remove.\n     * @returns {boolean} Returns `true` if the entry was removed, else `false`.\n     */\n    function listCacheDelete(key) {\n      var data = this.__data__,\n          index = assocIndexOf(data, key);\n\n      if (index < 0) {\n        return false;\n      }\n      var lastIndex = data.length - 1;\n      if (index == lastIndex) {\n        data.pop();\n      } else {\n        splice.call(data, index, 1);\n      }\n      --this.size;\n      return true;\n    }\n\n    /**\n     * Gets the list cache value for `key`.\n     *\n     * @private\n     * @name get\n     * @memberOf ListCache\n     * @param {string} key The key of the value to get.\n     * @returns {*} Returns the entry value.\n     */\n    function listCacheGet(key) {\n      var data = this.__data__,\n          index = assocIndexOf(data, key);\n\n      return index < 0 ? undefined : data[index][1];\n    }\n\n    /**\n     * Checks if a list cache value for `key` exists.\n     *\n     * @private\n     * @name has\n     * @memberOf ListCache\n     * @param {string} key The key of the entry to check.\n     * @returns {boolean} Returns `true` if an entry for `key` exists, else `false`.\n     */\n    function listCacheHas(key) {\n      return assocIndexOf(this.__data__, key) > -1;\n    }\n\n    /**\n     * Sets the list cache `key` to `value`.\n     *\n     * @private\n     * @name set\n     * @memberOf ListCache\n     * @param {string} key The key of the value to set.\n     * @param {*} value The value to set.\n     * @returns {Object} Returns the list cache instance.\n     */\n    function listCacheSet(key, value) {\n      var data = this.__data__,\n          index = assocIndexOf(data, key);\n\n      if (index < 0) {\n        ++this.size;\n        data.push([key, value]);\n      } else {\n        data[index][1] = value;\n      }\n      return this;\n    }\n\n    // Add methods to `ListCache`.\n    ListCache.prototype.clear = listCacheClear;\n    ListCache.prototype['delete'] = listCacheDelete;\n    ListCache.prototype.get = listCacheGet;\n    ListCache.prototype.has = listCacheHas;\n    ListCache.prototype.set = listCacheSet;\n\n    /*------------------------------------------------------------------------*/\n\n    /**\n     * Creates a map cache object to store key-value pairs.\n     *\n     * @private\n     * @constructor\n     * @param {Array} [entries] The key-value pairs to cache.\n     */\n    function MapCache(entries) {\n      var index = -1,\n          length = entries == null ? 0 : entries.length;\n\n      this.clear();\n      while (++index < length) {\n        var entry = entries[index];\n        this.set(entry[0], entry[1]);\n      }\n    }\n\n    /**\n     * Removes all key-value entries from the map.\n     *\n     * @private\n     * @name clear\n     * @memberOf MapCache\n     */\n    function mapCacheClear() {\n      this.size = 0;\n      this.__data__ = {\n        'hash': new Hash,\n        'map': new (Map || ListCache),\n        'string': new Hash\n      };\n    }\n\n    /**\n     * Removes `key` and its value from the map.\n     *\n     * @private\n     * @name delete\n     * @memberOf MapCache\n     * @param {string} key The key of the value to remove.\n     * @returns {boolean} Returns `true` if the entry was removed, else `false`.\n     */\n    function mapCacheDelete(key) {\n      var result = getMapData(this, key)['delete'](key);\n      this.size -= result ? 1 : 0;\n      return result;\n    }\n\n    /**\n     * Gets the map value for `key`.\n     *\n     * @private\n     * @name get\n     * @memberOf MapCache\n     * @param {string} key The key of the value to get.\n     * @returns {*} Returns the entry value.\n     */\n    function mapCacheGet(key) {\n      return getMapData(this, key).get(key);\n    }\n\n    /**\n     * Checks if a map value for `key` exists.\n     *\n     * @private\n     * @name has\n     * @memberOf MapCache\n     * @param {string} key The key of the entry to check.\n     * @returns {boolean} Returns `true` if an entry for `key` exists, else `false`.\n     */\n    function mapCacheHas(key) {\n      return getMapData(this, key).has(key);\n    }\n\n    /**\n     * Sets the map `key` to `value`.\n     *\n     * @private\n     * @name set\n     * @memberOf MapCache\n     * @param {string} key The key of the value to set.\n     * @param {*} value The value to set.\n     * @returns {Object} Returns the map cache instance.\n     */\n    function mapCacheSet(key, value) {\n      var data = getMapData(this, key),\n          size = data.size;\n\n      data.set(key, value);\n      this.size += data.size == size ? 0 : 1;\n      return this;\n    }\n\n    // Add methods to `MapCache`.\n    MapCache.prototype.clear = mapCacheClear;\n    MapCache.prototype['delete'] = mapCacheDelete;\n    MapCache.prototype.get = mapCacheGet;\n    MapCache.prototype.has = mapCacheHas;\n    MapCache.prototype.set = mapCacheSet;\n\n    /*------------------------------------------------------------------------*/\n\n    /**\n     *\n     * Creates an array cache object to store unique values.\n     *\n     * @private\n     * @constructor\n     * @param {Array} [values] The values to cache.\n     */\n    function SetCache(values) {\n      var index = -1,\n          length = values == null ? 0 : values.length;\n\n      this.__data__ = new MapCache;\n      while (++index < length) {\n        this.add(values[index]);\n      }\n    }\n\n    /**\n     * Adds `value` to the array cache.\n     *\n     * @private\n     * @name add\n     * @memberOf SetCache\n     * @alias push\n     * @param {*} value The value to cache.\n     * @returns {Object} Returns the cache instance.\n     */\n    function setCacheAdd(value) {\n      this.__data__.set(value, HASH_UNDEFINED);\n      return this;\n    }\n\n    /**\n     * Checks if `value` is in the array cache.\n     *\n     * @private\n     * @name has\n     * @memberOf SetCache\n     * @param {*} value The value to search for.\n     * @returns {number} Returns `true` if `value` is found, else `false`.\n     */\n    function setCacheHas(value) {\n      return this.__data__.has(value);\n    }\n\n    // Add methods to `SetCache`.\n    SetCache.prototype.add = SetCache.prototype.push = setCacheAdd;\n    SetCache.prototype.has = setCacheHas;\n\n    /*------------------------------------------------------------------------*/\n\n    /**\n     * Creates a stack cache object to store key-value pairs.\n     *\n     * @private\n     * @constructor\n     * @param {Array} [entries] The key-value pairs to cache.\n     */\n    function Stack(entries) {\n      var data = this.__data__ = new ListCache(entries);\n      this.size = data.size;\n    }\n\n    /**\n     * Removes all key-value entries from the stack.\n     *\n     * @private\n     * @name clear\n     * @memberOf Stack\n     */\n    function stackClear() {\n      this.__data__ = new ListCache;\n      this.size = 0;\n    }\n\n    /**\n     * Removes `key` and its value from the stack.\n     *\n     * @private\n     * @name delete\n     * @memberOf Stack\n     * @param {string} key The key of the value to remove.\n     * @returns {boolean} Returns `true` if the entry was removed, else `false`.\n     */\n    function stackDelete(key) {\n      var data = this.__data__,\n          result = data['delete'](key);\n\n      this.size = data.size;\n      return result;\n    }\n\n    /**\n     * Gets the stack value for `key`.\n     *\n     * @private\n     * @name get\n     * @memberOf Stack\n     * @param {string} key The key of the value to get.\n     * @returns {*} Returns the entry value.\n     */\n    function stackGet(key) {\n      return this.__data__.get(key);\n    }\n\n    /**\n     * Checks if a stack value for `key` exists.\n     *\n     * @private\n     * @name has\n     * @memberOf Stack\n     * @param {string} key The key of the entry to check.\n     * @returns {boolean} Returns `true` if an entry for `key` exists, else `false`.\n     */\n    function stackHas(key) {\n      return this.__data__.has(key);\n    }\n\n    /**\n     * Sets the stack `key` to `value`.\n     *\n     * @private\n     * @name set\n     * @memberOf Stack\n     * @param {string} key The key of the value to set.\n     * @param {*} value The value to set.\n     * @returns {Object} Returns the stack cache instance.\n     */\n    function stackSet(key, value) {\n      var data = this.__data__;\n      if (data instanceof ListCache) {\n        var pairs = data.__data__;\n        if (!Map || (pairs.length < LARGE_ARRAY_SIZE - 1)) {\n          pairs.push([key, value]);\n          this.size = ++data.size;\n          return this;\n        }\n        data = this.__data__ = new MapCache(pairs);\n      }\n      data.set(key, value);\n      this.size = data.size;\n      return this;\n    }\n\n    // Add methods to `Stack`.\n    Stack.prototype.clear = stackClear;\n    Stack.prototype['delete'] = stackDelete;\n    Stack.prototype.get = stackGet;\n    Stack.prototype.has = stackHas;\n    Stack.prototype.set = stackSet;\n\n    /*------------------------------------------------------------------------*/\n\n    /**\n     * Creates an array of the enumerable property names of the array-like `value`.\n     *\n     * @private\n     * @param {*} value The value to query.\n     * @param {boolean} inherited Specify returning inherited property names.\n     * @returns {Array} Returns the array of property names.\n     */\n    function arrayLikeKeys(value, inherited) {\n      var isArr = isArray(value),\n          isArg = !isArr && isArguments(value),\n          isBuff = !isArr && !isArg && isBuffer(value),\n          isType = !isArr && !isArg && !isBuff && isTypedArray(value),\n          skipIndexes = isArr || isArg || isBuff || isType,\n          result = skipIndexes ? baseTimes(value.length, String) : [],\n          length = result.length;\n\n      for (var key in value) {\n        if ((inherited || hasOwnProperty.call(value, key)) &&\n            !(skipIndexes && (\n               // Safari 9 has enumerable `arguments.length` in strict mode.\n               key == 'length' ||\n               // Node.js 0.10 has enumerable non-index properties on buffers.\n               (isBuff && (key == 'offset' || key == 'parent')) ||\n               // PhantomJS 2 has enumerable non-index properties on typed arrays.\n               (isType && (key == 'buffer' || key == 'byteLength' || key == 'byteOffset')) ||\n               // Skip index properties.\n               isIndex(key, length)\n            ))) {\n          result.push(key);\n        }\n      }\n      return result;\n    }\n\n    /**\n     * A specialized version of `_.sample` for arrays.\n     *\n     * @private\n     * @param {Array} array The array to sample.\n     * @returns {*} Returns the random element.\n     */\n    function arraySample(array) {\n      var length = array.length;\n      return length ? array[baseRandom(0, length - 1)] : undefined;\n    }\n\n    /**\n     * A specialized version of `_.sampleSize` for arrays.\n     *\n     * @private\n     * @param {Array} array The array to sample.\n     * @param {number} n The number of elements to sample.\n     * @returns {Array} Returns the random elements.\n     */\n    function arraySampleSize(array, n) {\n      return shuffleSelf(copyArray(array), baseClamp(n, 0, array.length));\n    }\n\n    /**\n     * A specialized version of `_.shuffle` for arrays.\n     *\n     * @private\n     * @param {Array} array The array to shuffle.\n     * @returns {Array} Returns the new shuffled array.\n     */\n    function arrayShuffle(array) {\n      return shuffleSelf(copyArray(array));\n    }\n\n    /**\n     * This function is like `assignValue` except that it doesn't assign\n     * `undefined` values.\n     *\n     * @private\n     * @param {Object} object The object to modify.\n     * @param {string} key The key of the property to assign.\n     * @param {*} value The value to assign.\n     */\n    function assignMergeValue(object, key, value) {\n      if ((value !== undefined && !eq(object[key], value)) ||\n          (value === undefined && !(key in object))) {\n        baseAssignValue(object, key, value);\n      }\n    }\n\n    /**\n     * Assigns `value` to `key` of `object` if the existing value is not equivalent\n     * using [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)\n     * for equality comparisons.\n     *\n     * @private\n     * @param {Object} object The object to modify.\n     * @param {string} key The key of the property to assign.\n     * @param {*} value The value to assign.\n     */\n    function assignValue(object, key, value) {\n      var objValue = object[key];\n      if (!(hasOwnProperty.call(object, key) && eq(objValue, value)) ||\n          (value === undefined && !(key in object))) {\n        baseAssignValue(object, key, value);\n      }\n    }\n\n    /**\n     * Gets the index at which the `key` is found in `array` of key-value pairs.\n     *\n     * @private\n     * @param {Array} array The array to inspect.\n     * @param {*} key The key to search for.\n     * @returns {number} Returns the index of the matched value, else `-1`.\n     */\n    function assocIndexOf(array, key) {\n      var length = array.length;\n      while (length--) {\n        if (eq(array[length][0], key)) {\n          return length;\n        }\n      }\n      return -1;\n    }\n\n    /**\n     * Aggregates elements of `collection` on `accumulator` with keys transformed\n     * by `iteratee` and values set by `setter`.\n     *\n     * @private\n     * @param {Array|Object} collection The collection to iterate over.\n     * @param {Function} setter The function to set `accumulator` values.\n     * @param {Function} iteratee The iteratee to transform keys.\n     * @param {Object} accumulator The initial aggregated object.\n     * @returns {Function} Returns `accumulator`.\n     */\n    function baseAggregator(collection, setter, iteratee, accumulator) {\n      baseEach(collection, function(value, key, collection) {\n        setter(accumulator, value, iteratee(value), collection);\n      });\n      return accumulator;\n    }\n\n    /**\n     * The base implementation of `_.assign` without support for multiple sources\n     * or `customizer` functions.\n     *\n     * @private\n     * @param {Object} object The destination object.\n     * @param {Object} source The source object.\n     * @returns {Object} Returns `object`.\n     */\n    function baseAssign(object, source) {\n      return object && copyObject(source, keys(source), object);\n    }\n\n    /**\n     * The base implementation of `_.assignIn` without support for multiple sources\n     * or `customizer` functions.\n     *\n     * @private\n     * @param {Object} object The destination object.\n     * @param {Object} source The source object.\n     * @returns {Object} Returns `object`.\n     */\n    function baseAssignIn(object, source) {\n      return object && copyObject(source, keysIn(source), object);\n    }\n\n    /**\n     * The base implementation of `assignValue` and `assignMergeValue` without\n     * value checks.\n     *\n     * @private\n     * @param {Object} object The object to modify.\n     * @param {string} key The key of the property to assign.\n     * @param {*} value The value to assign.\n     */\n    function baseAssignValue(object, key, value) {\n      if (key == '__proto__' && defineProperty) {\n        defineProperty(object, key, {\n          'configurable': true,\n          'enumerable': true,\n          'value': value,\n          'writable': true\n        });\n      } else {\n        object[key] = value;\n      }\n    }\n\n    /**\n     * The base implementation of `_.at` without support for individual paths.\n     *\n     * @private\n     * @param {Object} object The object to iterate over.\n     * @param {string[]} paths The property paths to pick.\n     * @returns {Array} Returns the picked elements.\n     */\n    function baseAt(object, paths) {\n      var index = -1,\n          length = paths.length,\n          result = Array(length),\n          skip = object == null;\n\n      while (++index < length) {\n        result[index] = skip ? undefined : get(object, paths[index]);\n      }\n      return result;\n    }\n\n    /**\n     * The base implementation of `_.clamp` which doesn't coerce arguments.\n     *\n     * @private\n     * @param {number} number The number to clamp.\n     * @param {number} [lower] The lower bound.\n     * @param {number} upper The upper bound.\n     * @returns {number} Returns the clamped number.\n     */\n    function baseClamp(number, lower, upper) {\n      if (number === number) {\n        if (upper !== undefined) {\n          number = number <= upper ? number : upper;\n        }\n        if (lower !== undefined) {\n          number = number >= lower ? number : lower;\n        }\n      }\n      return number;\n    }\n\n    /**\n     * The base implementation of `_.clone` and `_.cloneDeep` which tracks\n     * traversed objects.\n     *\n     * @private\n     * @param {*} value The value to clone.\n     * @param {boolean} bitmask The bitmask flags.\n     *  1 - Deep clone\n     *  2 - Flatten inherited properties\n     *  4 - Clone symbols\n     * @param {Function} [customizer] The function to customize cloning.\n     * @param {string} [key] The key of `value`.\n     * @param {Object} [object] The parent object of `value`.\n     * @param {Object} [stack] Tracks traversed objects and their clone counterparts.\n     * @returns {*} Returns the cloned value.\n     */\n    function baseClone(value, bitmask, customizer, key, object, stack) {\n      var result,\n          isDeep = bitmask & CLONE_DEEP_FLAG,\n          isFlat = bitmask & CLONE_FLAT_FLAG,\n          isFull = bitmask & CLONE_SYMBOLS_FLAG;\n\n      if (customizer) {\n        result = object ? customizer(value, key, object, stack) : customizer(value);\n      }\n      if (result !== undefined) {\n        return result;\n      }\n      if (!isObject(value)) {\n        return value;\n      }\n      var isArr = isArray(value);\n      if (isArr) {\n        result = initCloneArray(value);\n        if (!isDeep) {\n          return copyArray(value, result);\n        }\n      } else {\n        var tag = getTag(value),\n            isFunc = tag == funcTag || tag == genTag;\n\n        if (isBuffer(value)) {\n          return cloneBuffer(value, isDeep);\n        }\n        if (tag == objectTag || tag == argsTag || (isFunc && !object)) {\n          result = (isFlat || isFunc) ? {} : initCloneObject(value);\n          if (!isDeep) {\n            return isFlat\n              ? copySymbolsIn(value, baseAssignIn(result, value))\n              : copySymbols(value, baseAssign(result, value));\n          }\n        } else {\n          if (!cloneableTags[tag]) {\n            return object ? value : {};\n          }\n          result = initCloneByTag(value, tag, isDeep);\n        }\n      }\n      // Check for circular references and return its corresponding clone.\n      stack || (stack = new Stack);\n      var stacked = stack.get(value);\n      if (stacked) {\n        return stacked;\n      }\n      stack.set(value, result);\n\n      if (isSet(value)) {\n        value.forEach(function(subValue) {\n          result.add(baseClone(subValue, bitmask, customizer, subValue, value, stack));\n        });\n      } else if (isMap(value)) {\n        value.forEach(function(subValue, key) {\n          result.set(key, baseClone(subValue, bitmask, customizer, key, value, stack));\n        });\n      }\n\n      var keysFunc = isFull\n        ? (isFlat ? getAllKeysIn : getAllKeys)\n        : (isFlat ? keysIn : keys);\n\n      var props = isArr ? undefined : keysFunc(value);\n      arrayEach(props || value, function(subValue, key) {\n        if (props) {\n          key = subValue;\n          subValue = value[key];\n        }\n        // Recursively populate clone (susceptible to call stack limits).\n        assignValue(result, key, baseClone(subValue, bitmask, customizer, key, value, stack));\n      });\n      return result;\n    }\n\n    /**\n     * The base implementation of `_.conforms` which doesn't clone `source`.\n     *\n     * @private\n     * @param {Object} source The object of property predicates to conform to.\n     * @returns {Function} Returns the new spec function.\n     */\n    function baseConforms(source) {\n      var props = keys(source);\n      return function(object) {\n        return baseConformsTo(object, source, props);\n      };\n    }\n\n    /**\n     * The base implementation of `_.conformsTo` which accepts `props` to check.\n     *\n     * @private\n     * @param {Object} object The object to inspect.\n     * @param {Object} source The object of property predicates to conform to.\n     * @returns {boolean} Returns `true` if `object` conforms, else `false`.\n     */\n    function baseConformsTo(object, source, props) {\n      var length = props.length;\n      if (object == null) {\n        return !length;\n      }\n      object = Object(object);\n      while (length--) {\n        var key = props[length],\n            predicate = source[key],\n            value = object[key];\n\n        if ((value === undefined && !(key in object)) || !predicate(value)) {\n          return false;\n        }\n      }\n      return true;\n    }\n\n    /**\n     * The base implementation of `_.delay` and `_.defer` which accepts `args`\n     * to provide to `func`.\n     *\n     * @private\n     * @param {Function} func The function to delay.\n     * @param {number} wait The number of milliseconds to delay invocation.\n     * @param {Array} args The arguments to provide to `func`.\n     * @returns {number|Object} Returns the timer id or timeout object.\n     */\n    function baseDelay(func, wait, args) {\n      if (typeof func != 'function') {\n        throw new TypeError(FUNC_ERROR_TEXT);\n      }\n      return setTimeout(function() { func.apply(undefined, args); }, wait);\n    }\n\n    /**\n     * The base implementation of methods like `_.difference` without support\n     * for excluding multiple arrays or iteratee shorthands.\n     *\n     * @private\n     * @param {Array} array The array to inspect.\n     * @param {Array} values The values to exclude.\n     * @param {Function} [iteratee] The iteratee invoked per element.\n     * @param {Function} [comparator] The comparator invoked per element.\n     * @returns {Array} Returns the new array of filtered values.\n     */\n    function baseDifference(array, values, iteratee, comparator) {\n      var index = -1,\n          includes = arrayIncludes,\n          isCommon = true,\n          length = array.length,\n          result = [],\n          valuesLength = values.length;\n\n      if (!length) {\n        return result;\n      }\n      if (iteratee) {\n        values = arrayMap(values, baseUnary(iteratee));\n      }\n      if (comparator) {\n        includes = arrayIncludesWith;\n        isCommon = false;\n      }\n      else if (values.length >= LARGE_ARRAY_SIZE) {\n        includes = cacheHas;\n        isCommon = false;\n        values = new SetCache(values);\n      }\n      outer:\n      while (++index < length) {\n        var value = array[index],\n            computed = iteratee == null ? value : iteratee(value);\n\n        value = (comparator || value !== 0) ? value : 0;\n        if (isCommon && computed === computed) {\n          var valuesIndex = valuesLength;\n          while (valuesIndex--) {\n            if (values[valuesIndex] === computed) {\n              continue outer;\n            }\n          }\n          result.push(value);\n        }\n        else if (!includes(values, computed, comparator)) {\n          result.push(value);\n        }\n      }\n      return result;\n    }\n\n    /**\n     * The base implementation of `_.forEach` without support for iteratee shorthands.\n     *\n     * @private\n     * @param {Array|Object} collection The collection to iterate over.\n     * @param {Function} iteratee The function invoked per iteration.\n     * @returns {Array|Object} Returns `collection`.\n     */\n    var baseEach = createBaseEach(baseForOwn);\n\n    /**\n     * The base implementation of `_.forEachRight` without support for iteratee shorthands.\n     *\n     * @private\n     * @param {Array|Object} collection The collection to iterate over.\n     * @param {Function} iteratee The function invoked per iteration.\n     * @returns {Array|Object} Returns `collection`.\n     */\n    var baseEachRight = createBaseEach(baseForOwnRight, true);\n\n    /**\n     * The base implementation of `_.every` without support for iteratee shorthands.\n     *\n     * @private\n     * @param {Array|Object} collection The collection to iterate over.\n     * @param {Function} predicate The function invoked per iteration.\n     * @returns {boolean} Returns `true` if all elements pass the predicate check,\n     *  else `false`\n     */\n    function baseEvery(collection, predicate) {\n      var result = true;\n      baseEach(collection, function(value, index, collection) {\n        result = !!predicate(value, index, collection);\n        return result;\n      });\n      return result;\n    }\n\n    /**\n     * The base implementation of methods like `_.max` and `_.min` which accepts a\n     * `comparator` to determine the extremum value.\n     *\n     * @private\n     * @param {Array} array The array to iterate over.\n     * @param {Function} iteratee The iteratee invoked per iteration.\n     * @param {Function} comparator The comparator used to compare values.\n     * @returns {*} Returns the extremum value.\n     */\n    function baseExtremum(array, iteratee, comparator) {\n      var index = -1,\n          length = array.length;\n\n      while (++index < length) {\n        var value = array[index],\n            current = iteratee(value);\n\n        if (current != null && (computed === undefined\n              ? (current === current && !isSymbol(current))\n              : comparator(current, computed)\n            )) {\n          var computed = current,\n              result = value;\n        }\n      }\n      return result;\n    }\n\n    /**\n     * The base implementation of `_.fill` without an iteratee call guard.\n     *\n     * @private\n     * @param {Array} array The array to fill.\n     * @param {*} value The value to fill `array` with.\n     * @param {number} [start=0] The start position.\n     * @param {number} [end=array.length] The end position.\n     * @returns {Array} Returns `array`.\n     */\n    function baseFill(array, value, start, end) {\n      var length = array.length;\n\n      start = toInteger(start);\n      if (start < 0) {\n        start = -start > length ? 0 : (length + start);\n      }\n      end = (end === undefined || end > length) ? length : toInteger(end);\n      if (end < 0) {\n        end += length;\n      }\n      end = start > end ? 0 : toLength(end);\n      while (start < end) {\n        array[start++] = value;\n      }\n      return array;\n    }\n\n    /**\n     * The base implementation of `_.filter` without support for iteratee shorthands.\n     *\n     * @private\n     * @param {Array|Object} collection The collection to iterate over.\n     * @param {Function} predicate The function invoked per iteration.\n     * @returns {Array} Returns the new filtered array.\n     */\n    function baseFilter(collection, predicate) {\n      var result = [];\n      baseEach(collection, function(value, index, collection) {\n        if (predicate(value, index, collection)) {\n          result.push(value);\n        }\n      });\n      return result;\n    }\n\n    /**\n     * The base implementation of `_.flatten` with support for restricting flattening.\n     *\n     * @private\n     * @param {Array} array The array to flatten.\n     * @param {number} depth The maximum recursion depth.\n     * @param {boolean} [predicate=isFlattenable] The function invoked per iteration.\n     * @param {boolean} [isStrict] Restrict to values that pass `predicate` checks.\n     * @param {Array} [result=[]] The initial result value.\n     * @returns {Array} Returns the new flattened array.\n     */\n    function baseFlatten(array, depth, predicate, isStrict, result) {\n      var index = -1,\n          length = array.length;\n\n      predicate || (predicate = isFlattenable);\n      result || (result = []);\n\n      while (++index < length) {\n        var value = array[index];\n        if (depth > 0 && predicate(value)) {\n          if (depth > 1) {\n            // Recursively flatten arrays (susceptible to call stack limits).\n            baseFlatten(value, depth - 1, predicate, isStrict, result);\n          } else {\n            arrayPush(result, value);\n          }\n        } else if (!isStrict) {\n          result[result.length] = value;\n        }\n      }\n      return result;\n    }\n\n    /**\n     * The base implementation of `baseForOwn` which iterates over `object`\n     * properties returned by `keysFunc` and invokes `iteratee` for each property.\n     * Iteratee functions may exit iteration early by explicitly returning `false`.\n     *\n     * @private\n     * @param {Object} object The object to iterate over.\n     * @param {Function} iteratee The function invoked per iteration.\n     * @param {Function} keysFunc The function to get the keys of `object`.\n     * @returns {Object} Returns `object`.\n     */\n    var baseFor = createBaseFor();\n\n    /**\n     * This function is like `baseFor` except that it iterates over properties\n     * in the opposite order.\n     *\n     * @private\n     * @param {Object} object The object to iterate over.\n     * @param {Function} iteratee The function invoked per iteration.\n     * @param {Function} keysFunc The function to get the keys of `object`.\n     * @returns {Object} Returns `object`.\n     */\n    var baseForRight = createBaseFor(true);\n\n    /**\n     * The base implementation of `_.forOwn` without support for iteratee shorthands.\n     *\n     * @private\n     * @param {Object} object The object to iterate over.\n     * @param {Function} iteratee The function invoked per iteration.\n     * @returns {Object} Returns `object`.\n     */\n    function baseForOwn(object, iteratee) {\n      return object && baseFor(object, iteratee, keys);\n    }\n\n    /**\n     * The base implementation of `_.forOwnRight` without support for iteratee shorthands.\n     *\n     * @private\n     * @param {Object} object The object to iterate over.\n     * @param {Function} iteratee The function invoked per iteration.\n     * @returns {Object} Returns `object`.\n     */\n    function baseForOwnRight(object, iteratee) {\n      return object && baseForRight(object, iteratee, keys);\n    }\n\n    /**\n     * The base implementation of `_.functions` which creates an array of\n     * `object` function property names filtered from `props`.\n     *\n     * @private\n     * @param {Object} object The object to inspect.\n     * @param {Array} props The property names to filter.\n     * @returns {Array} Returns the function names.\n     */\n    function baseFunctions(object, props) {\n      return arrayFilter(props, function(key) {\n        return isFunction(object[key]);\n      });\n    }\n\n    /**\n     * The base implementation of `_.get` without support for default values.\n     *\n     * @private\n     * @param {Object} object The object to query.\n     * @param {Array|string} path The path of the property to get.\n     * @returns {*} Returns the resolved value.\n     */\n    function baseGet(object, path) {\n      path = castPath(path, object);\n\n      var index = 0,\n          length = path.length;\n\n      while (object != null && index < length) {\n        object = object[toKey(path[index++])];\n      }\n      return (index && index == length) ? object : undefined;\n    }\n\n    /**\n     * The base implementation of `getAllKeys` and `getAllKeysIn` which uses\n     * `keysFunc` and `symbolsFunc` to get the enumerable property names and\n     * symbols of `object`.\n     *\n     * @private\n     * @param {Object} object The object to query.\n     * @param {Function} keysFunc The function to get the keys of `object`.\n     * @param {Function} symbolsFunc The function to get the symbols of `object`.\n     * @returns {Array} Returns the array of property names and symbols.\n     */\n    function baseGetAllKeys(object, keysFunc, symbolsFunc) {\n      var result = keysFunc(object);\n      return isArray(object) ? result : arrayPush(result, symbolsFunc(object));\n    }\n\n    /**\n     * The base implementation of `getTag` without fallbacks for buggy environments.\n     *\n     * @private\n     * @param {*} value The value to query.\n     * @returns {string} Returns the `toStringTag`.\n     */\n    function baseGetTag(value) {\n      if (value == null) {\n        return value === undefined ? undefinedTag : nullTag;\n      }\n      return (symToStringTag && symToStringTag in Object(value))\n        ? getRawTag(value)\n        : objectToString(value);\n    }\n\n    /**\n     * The base implementation of `_.gt` which doesn't coerce arguments.\n     *\n     * @private\n     * @param {*} value The value to compare.\n     * @param {*} other The other value to compare.\n     * @returns {boolean} Returns `true` if `value` is greater than `other`,\n     *  else `false`.\n     */\n    function baseGt(value, other) {\n      return value > other;\n    }\n\n    /**\n     * The base implementation of `_.has` without support for deep paths.\n     *\n     * @private\n     * @param {Object} [object] The object to query.\n     * @param {Array|string} key The key to check.\n     * @returns {boolean} Returns `true` if `key` exists, else `false`.\n     */\n    function baseHas(object, key) {\n      return object != null && hasOwnProperty.call(object, key);\n    }\n\n    /**\n     * The base implementation of `_.hasIn` without support for deep paths.\n     *\n     * @private\n     * @param {Object} [object] The object to query.\n     * @param {Array|string} key The key to check.\n     * @returns {boolean} Returns `true` if `key` exists, else `false`.\n     */\n    function baseHasIn(object, key) {\n      return object != null && key in Object(object);\n    }\n\n    /**\n     * The base implementation of `_.inRange` which doesn't coerce arguments.\n     *\n     * @private\n     * @param {number} number The number to check.\n     * @param {number} start The start of the range.\n     * @param {number} end The end of the range.\n     * @returns {boolean} Returns `true` if `number` is in the range, else `false`.\n     */\n    function baseInRange(number, start, end) {\n      return number >= nativeMin(start, end) && number < nativeMax(start, end);\n    }\n\n    /**\n     * The base implementation of methods like `_.intersection`, without support\n     * for iteratee shorthands, that accepts an array of arrays to inspect.\n     *\n     * @private\n     * @param {Array} arrays The arrays to inspect.\n     * @param {Function} [iteratee] The iteratee invoked per element.\n     * @param {Function} [comparator] The comparator invoked per element.\n     * @returns {Array} Returns the new array of shared values.\n     */\n    function baseIntersection(arrays, iteratee, comparator) {\n      var includes = comparator ? arrayIncludesWith : arrayIncludes,\n          length = arrays[0].length,\n          othLength = arrays.length,\n          othIndex = othLength,\n          caches = Array(othLength),\n          maxLength = Infinity,\n          result = [];\n\n      while (othIndex--) {\n        var array = arrays[othIndex];\n        if (othIndex && iteratee) {\n          array = arrayMap(array, baseUnary(iteratee));\n        }\n        maxLength = nativeMin(array.length, maxLength);\n        caches[othIndex] = !comparator && (iteratee || (length >= 120 && array.length >= 120))\n          ? new SetCache(othIndex && array)\n          : undefined;\n      }\n      array = arrays[0];\n\n      var index = -1,\n          seen = caches[0];\n\n      outer:\n      while (++index < length && result.length < maxLength) {\n        var value = array[index],\n            computed = iteratee ? iteratee(value) : value;\n\n        value = (comparator || value !== 0) ? value : 0;\n        if (!(seen\n              ? cacheHas(seen, computed)\n              : includes(result, computed, comparator)\n            )) {\n          othIndex = othLength;\n          while (--othIndex) {\n            var cache = caches[othIndex];\n            if (!(cache\n                  ? cacheHas(cache, computed)\n                  : includes(arrays[othIndex], computed, comparator))\n                ) {\n              continue outer;\n            }\n          }\n          if (seen) {\n            seen.push(computed);\n          }\n          result.push(value);\n        }\n      }\n      return result;\n    }\n\n    /**\n     * The base implementation of `_.invert` and `_.invertBy` which inverts\n     * `object` with values transformed by `iteratee` and set by `setter`.\n     *\n     * @private\n     * @param {Object} object The object to iterate over.\n     * @param {Function} setter The function to set `accumulator` values.\n     * @param {Function} iteratee The iteratee to transform values.\n     * @param {Object} accumulator The initial inverted object.\n     * @returns {Function} Returns `accumulator`.\n     */\n    function baseInverter(object, setter, iteratee, accumulator) {\n      baseForOwn(object, function(value, key, object) {\n        setter(accumulator, iteratee(value), key, object);\n      });\n      return accumulator;\n    }\n\n    /**\n     * The base implementation of `_.invoke` without support for individual\n     * method arguments.\n     *\n     * @private\n     * @param {Object} object The object to query.\n     * @param {Array|string} path The path of the method to invoke.\n     * @param {Array} args The arguments to invoke the method with.\n     * @returns {*} Returns the result of the invoked method.\n     */\n    function baseInvoke(object, path, args) {\n      path = castPath(path, object);\n      object = parent(object, path);\n      var func = object == null ? object : object[toKey(last(path))];\n      return func == null ? undefined : apply(func, object, args);\n    }\n\n    /**\n     * The base implementation of `_.isArguments`.\n     *\n     * @private\n     * @param {*} value The value to check.\n     * @returns {boolean} Returns `true` if `value` is an `arguments` object,\n     */\n    function baseIsArguments(value) {\n      return isObjectLike(value) && baseGetTag(value) == argsTag;\n    }\n\n    /**\n     * The base implementation of `_.isArrayBuffer` without Node.js optimizations.\n     *\n     * @private\n     * @param {*} value The value to check.\n     * @returns {boolean} Returns `true` if `value` is an array buffer, else `false`.\n     */\n    function baseIsArrayBuffer(value) {\n      return isObjectLike(value) && baseGetTag(value) == arrayBufferTag;\n    }\n\n    /**\n     * The base implementation of `_.isDate` without Node.js optimizations.\n     *\n     * @private\n     * @param {*} value The value to check.\n     * @returns {boolean} Returns `true` if `value` is a date object, else `false`.\n     */\n    function baseIsDate(value) {\n      return isObjectLike(value) && baseGetTag(value) == dateTag;\n    }\n\n    /**\n     * The base implementation of `_.isEqual` which supports partial comparisons\n     * and tracks traversed objects.\n     *\n     * @private\n     * @param {*} value The value to compare.\n     * @param {*} other The other value to compare.\n     * @param {boolean} bitmask The bitmask flags.\n     *  1 - Unordered comparison\n     *  2 - Partial comparison\n     * @param {Function} [customizer] The function to customize comparisons.\n     * @param {Object} [stack] Tracks traversed `value` and `other` objects.\n     * @returns {boolean} Returns `true` if the values are equivalent, else `false`.\n     */\n    function baseIsEqual(value, other, bitmask, customizer, stack) {\n      if (value === other) {\n        return true;\n      }\n      if (value == null || other == null || (!isObjectLike(value) && !isObjectLike(other))) {\n        return value !== value && other !== other;\n      }\n      return baseIsEqualDeep(value, other, bitmask, customizer, baseIsEqual, stack);\n    }\n\n    /**\n     * A specialized version of `baseIsEqual` for arrays and objects which performs\n     * deep comparisons and tracks traversed objects enabling objects with circular\n     * references to be compared.\n     *\n     * @private\n     * @param {Object} object The object to compare.\n     * @param {Object} other The other object to compare.\n     * @param {number} bitmask The bitmask flags. See `baseIsEqual` for more details.\n     * @param {Function} customizer The function to customize comparisons.\n     * @param {Function} equalFunc The function to determine equivalents of values.\n     * @param {Object} [stack] Tracks traversed `object` and `other` objects.\n     * @returns {boolean} Returns `true` if the objects are equivalent, else `false`.\n     */\n    function baseIsEqualDeep(object, other, bitmask, customizer, equalFunc, stack) {\n      var objIsArr = isArray(object),\n          othIsArr = isArray(other),\n          objTag = objIsArr ? arrayTag : getTag(object),\n          othTag = othIsArr ? arrayTag : getTag(other);\n\n      objTag = objTag == argsTag ? objectTag : objTag;\n      othTag = othTag == argsTag ? objectTag : othTag;\n\n      var objIsObj = objTag == objectTag,\n          othIsObj = othTag == objectTag,\n          isSameTag = objTag == othTag;\n\n      if (isSameTag && isBuffer(object)) {\n        if (!isBuffer(other)) {\n          return false;\n        }\n        objIsArr = true;\n        objIsObj = false;\n      }\n      if (isSameTag && !objIsObj) {\n        stack || (stack = new Stack);\n        return (objIsArr || isTypedArray(object))\n          ? equalArrays(object, other, bitmask, customizer, equalFunc, stack)\n          : equalByTag(object, other, objTag, bitmask, customizer, equalFunc, stack);\n      }\n      if (!(bitmask & COMPARE_PARTIAL_FLAG)) {\n        var objIsWrapped = objIsObj && hasOwnProperty.call(object, '__wrapped__'),\n            othIsWrapped = othIsObj && hasOwnProperty.call(other, '__wrapped__');\n\n        if (objIsWrapped || othIsWrapped) {\n          var objUnwrapped = objIsWrapped ? object.value() : object,\n              othUnwrapped = othIsWrapped ? other.value() : other;\n\n          stack || (stack = new Stack);\n          return equalFunc(objUnwrapped, othUnwrapped, bitmask, customizer, stack);\n        }\n      }\n      if (!isSameTag) {\n        return false;\n      }\n      stack || (stack = new Stack);\n      return equalObjects(object, other, bitmask, customizer, equalFunc, stack);\n    }\n\n    /**\n     * The base implementation of `_.isMap` without Node.js optimizations.\n     *\n     * @private\n     * @param {*} value The value to check.\n     * @returns {boolean} Returns `true` if `value` is a map, else `false`.\n     */\n    function baseIsMap(value) {\n      return isObjectLike(value) && getTag(value) == mapTag;\n    }\n\n    /**\n     * The base implementation of `_.isMatch` without support for iteratee shorthands.\n     *\n     * @private\n     * @param {Object} object The object to inspect.\n     * @param {Object} source The object of property values to match.\n     * @param {Array} matchData The property names, values, and compare flags to match.\n     * @param {Function} [customizer] The function to customize comparisons.\n     * @returns {boolean} Returns `true` if `object` is a match, else `false`.\n     */\n    function baseIsMatch(object, source, matchData, customizer) {\n      var index = matchData.length,\n          length = index,\n          noCustomizer = !customizer;\n\n      if (object == null) {\n        return !length;\n      }\n      object = Object(object);\n      while (index--) {\n        var data = matchData[index];\n        if ((noCustomizer && data[2])\n              ? data[1] !== object[data[0]]\n              : !(data[0] in object)\n            ) {\n          return false;\n        }\n      }\n      while (++index < length) {\n        data = matchData[index];\n        var key = data[0],\n            objValue = object[key],\n            srcValue = data[1];\n\n        if (noCustomizer && data[2]) {\n          if (objValue === undefined && !(key in object)) {\n            return false;\n          }\n        } else {\n          var stack = new Stack;\n          if (customizer) {\n            var result = customizer(objValue, srcValue, key, object, source, stack);\n          }\n          if (!(result === undefined\n                ? baseIsEqual(srcValue, objValue, COMPARE_PARTIAL_FLAG | COMPARE_UNORDERED_FLAG, customizer, stack)\n                : result\n              )) {\n            return false;\n          }\n        }\n      }\n      return true;\n    }\n\n    /**\n     * The base implementation of `_.isNative` without bad shim checks.\n     *\n     * @private\n     * @param {*} value The value to check.\n     * @returns {boolean} Returns `true` if `value` is a native function,\n     *  else `false`.\n     */\n    function baseIsNative(value) {\n      if (!isObject(value) || isMasked(value)) {\n        return false;\n      }\n      var pattern = isFunction(value) ? reIsNative : reIsHostCtor;\n      return pattern.test(toSource(value));\n    }\n\n    /**\n     * The base implementation of `_.isRegExp` without Node.js optimizations.\n     *\n     * @private\n     * @param {*} value The value to check.\n     * @returns {boolean} Returns `true` if `value` is a regexp, else `false`.\n     */\n    function baseIsRegExp(value) {\n      return isObjectLike(value) && baseGetTag(value) == regexpTag;\n    }\n\n    /**\n     * The base implementation of `_.isSet` without Node.js optimizations.\n     *\n     * @private\n     * @param {*} value The value to check.\n     * @returns {boolean} Returns `true` if `value` is a set, else `false`.\n     */\n    function baseIsSet(value) {\n      return isObjectLike(value) && getTag(value) == setTag;\n    }\n\n    /**\n     * The base implementation of `_.isTypedArray` without Node.js optimizations.\n     *\n     * @private\n     * @param {*} value The value to check.\n     * @returns {boolean} Returns `true` if `value` is a typed array, else `false`.\n     */\n    function baseIsTypedArray(value) {\n      return isObjectLike(value) &&\n        isLength(value.length) && !!typedArrayTags[baseGetTag(value)];\n    }\n\n    /**\n     * The base implementation of `_.iteratee`.\n     *\n     * @private\n     * @param {*} [value=_.identity] The value to convert to an iteratee.\n     * @returns {Function} Returns the iteratee.\n     */\n    function baseIteratee(value) {\n      // Don't store the `typeof` result in a variable to avoid a JIT bug in Safari 9.\n      // See https://bugs.webkit.org/show_bug.cgi?id=156034 for more details.\n      if (typeof value == 'function') {\n        return value;\n      }\n      if (value == null) {\n        return identity;\n      }\n      if (typeof value == 'object') {\n        return isArray(value)\n          ? baseMatchesProperty(value[0], value[1])\n          : baseMatches(value);\n      }\n      return property(value);\n    }\n\n    /**\n     * The base implementation of `_.keys` which doesn't treat sparse arrays as dense.\n     *\n     * @private\n     * @param {Object} object The object to query.\n     * @returns {Array} Returns the array of property names.\n     */\n    function baseKeys(object) {\n      if (!isPrototype(object)) {\n        return nativeKeys(object);\n      }\n      var result = [];\n      for (var key in Object(object)) {\n        if (hasOwnProperty.call(object, key) && key != 'constructor') {\n          result.push(key);\n        }\n      }\n      return result;\n    }\n\n    /**\n     * The base implementation of `_.keysIn` which doesn't treat sparse arrays as dense.\n     *\n     * @private\n     * @param {Object} object The object to query.\n     * @returns {Array} Returns the array of property names.\n     */\n    function baseKeysIn(object) {\n      if (!isObject(object)) {\n        return nativeKeysIn(object);\n      }\n      var isProto = isPrototype(object),\n          result = [];\n\n      for (var key in object) {\n        if (!(key == 'constructor' && (isProto || !hasOwnProperty.call(object, key)))) {\n          result.push(key);\n        }\n      }\n      return result;\n    }\n\n    /**\n     * The base implementation of `_.lt` which doesn't coerce arguments.\n     *\n     * @private\n     * @param {*} value The value to compare.\n     * @param {*} other The other value to compare.\n     * @returns {boolean} Returns `true` if `value` is less than `other`,\n     *  else `false`.\n     */\n    function baseLt(value, other) {\n      return value < other;\n    }\n\n    /**\n     * The base implementation of `_.map` without support for iteratee shorthands.\n     *\n     * @private\n     * @param {Array|Object} collection The collection to iterate over.\n     * @param {Function} iteratee The function invoked per iteration.\n     * @returns {Array} Returns the new mapped array.\n     */\n    function baseMap(collection, iteratee) {\n      var index = -1,\n          result = isArrayLike(collection) ? Array(collection.length) : [];\n\n      baseEach(collection, function(value, key, collection) {\n        result[++index] = iteratee(value, key, collection);\n      });\n      return result;\n    }\n\n    /**\n     * The base implementation of `_.matches` which doesn't clone `source`.\n     *\n     * @private\n     * @param {Object} source The object of property values to match.\n     * @returns {Function} Returns the new spec function.\n     */\n    function baseMatches(source) {\n      var matchData = getMatchData(source);\n      if (matchData.length == 1 && matchData[0][2]) {\n        return matchesStrictComparable(matchData[0][0], matchData[0][1]);\n      }\n      return function(object) {\n        return object === source || baseIsMatch(object, source, matchData);\n      };\n    }\n\n    /**\n     * The base implementation of `_.matchesProperty` which doesn't clone `srcValue`.\n     *\n     * @private\n     * @param {string} path The path of the property to get.\n     * @param {*} srcValue The value to match.\n     * @returns {Function} Returns the new spec function.\n     */\n    function baseMatchesProperty(path, srcValue) {\n      if (isKey(path) && isStrictComparable(srcValue)) {\n        return matchesStrictComparable(toKey(path), srcValue);\n      }\n      return function(object) {\n        var objValue = get(object, path);\n        return (objValue === undefined && objValue === srcValue)\n          ? hasIn(object, path)\n          : baseIsEqual(srcValue, objValue, COMPARE_PARTIAL_FLAG | COMPARE_UNORDERED_FLAG);\n      };\n    }\n\n    /**\n     * The base implementation of `_.merge` without support for multiple sources.\n     *\n     * @private\n     * @param {Object} object The destination object.\n     * @param {Object} source The source object.\n     * @param {number} srcIndex The index of `source`.\n     * @param {Function} [customizer] The function to customize merged values.\n     * @param {Object} [stack] Tracks traversed source values and their merged\n     *  counterparts.\n     */\n    function baseMerge(object, source, srcIndex, customizer, stack) {\n      if (object === source) {\n        return;\n      }\n      baseFor(source, function(srcValue, key) {\n        stack || (stack = new Stack);\n        if (isObject(srcValue)) {\n          baseMergeDeep(object, source, key, srcIndex, baseMerge, customizer, stack);\n        }\n        else {\n          var newValue = customizer\n            ? customizer(safeGet(object, key), srcValue, (key + ''), object, source, stack)\n            : undefined;\n\n          if (newValue === undefined) {\n            newValue = srcValue;\n          }\n          assignMergeValue(object, key, newValue);\n        }\n      }, keysIn);\n    }\n\n    /**\n     * A specialized version of `baseMerge` for arrays and objects which performs\n     * deep merges and tracks traversed objects enabling objects with circular\n     * references to be merged.\n     *\n     * @private\n     * @param {Object} object The destination object.\n     * @param {Object} source The source object.\n     * @param {string} key The key of the value to merge.\n     * @param {number} srcIndex The index of `source`.\n     * @param {Function} mergeFunc The function to merge values.\n     * @param {Function} [customizer] The function to customize assigned values.\n     * @param {Object} [stack] Tracks traversed source values and their merged\n     *  counterparts.\n     */\n    function baseMergeDeep(object, source, key, srcIndex, mergeFunc, customizer, stack) {\n      var objValue = safeGet(object, key),\n          srcValue = safeGet(source, key),\n          stacked = stack.get(srcValue);\n\n      if (stacked) {\n        assignMergeValue(object, key, stacked);\n        return;\n      }\n      var newValue = customizer\n        ? customizer(objValue, srcValue, (key + ''), object, source, stack)\n        : undefined;\n\n      var isCommon = newValue === undefined;\n\n      if (isCommon) {\n        var isArr = isArray(srcValue),\n            isBuff = !isArr && isBuffer(srcValue),\n            isTyped = !isArr && !isBuff && isTypedArray(srcValue);\n\n        newValue = srcValue;\n        if (isArr || isBuff || isTyped) {\n          if (isArray(objValue)) {\n            newValue = objValue;\n          }\n          else if (isArrayLikeObject(objValue)) {\n            newValue = copyArray(objValue);\n          }\n          else if (isBuff) {\n            isCommon = false;\n            newValue = cloneBuffer(srcValue, true);\n          }\n          else if (isTyped) {\n            isCommon = false;\n            newValue = cloneTypedArray(srcValue, true);\n          }\n          else {\n            newValue = [];\n          }\n        }\n        else if (isPlainObject(srcValue) || isArguments(srcValue)) {\n          newValue = objValue;\n          if (isArguments(objValue)) {\n            newValue = toPlainObject(objValue);\n          }\n          else if (!isObject(objValue) || isFunction(objValue)) {\n            newValue = initCloneObject(srcValue);\n          }\n        }\n        else {\n          isCommon = false;\n        }\n      }\n      if (isCommon) {\n        // Recursively merge objects and arrays (susceptible to call stack limits).\n        stack.set(srcValue, newValue);\n        mergeFunc(newValue, srcValue, srcIndex, customizer, stack);\n        stack['delete'](srcValue);\n      }\n      assignMergeValue(object, key, newValue);\n    }\n\n    /**\n     * The base implementation of `_.nth` which doesn't coerce arguments.\n     *\n     * @private\n     * @param {Array} array The array to query.\n     * @param {number} n The index of the element to return.\n     * @returns {*} Returns the nth element of `array`.\n     */\n    function baseNth(array, n) {\n      var length = array.length;\n      if (!length) {\n        return;\n      }\n      n += n < 0 ? length : 0;\n      return isIndex(n, length) ? array[n] : undefined;\n    }\n\n    /**\n     * The base implementation of `_.orderBy` without param guards.\n     *\n     * @private\n     * @param {Array|Object} collection The collection to iterate over.\n     * @param {Function[]|Object[]|string[]} iteratees The iteratees to sort by.\n     * @param {string[]} orders The sort orders of `iteratees`.\n     * @returns {Array} Returns the new sorted array.\n     */\n    function baseOrderBy(collection, iteratees, orders) {\n      if (iteratees.length) {\n        iteratees = arrayMap(iteratees, function(iteratee) {\n          if (isArray(iteratee)) {\n            return function(value) {\n              return baseGet(value, iteratee.length === 1 ? iteratee[0] : iteratee);\n            }\n          }\n          return iteratee;\n        });\n      } else {\n        iteratees = [identity];\n      }\n\n      var index = -1;\n      iteratees = arrayMap(iteratees, baseUnary(getIteratee()));\n\n      var result = baseMap(collection, function(value, key, collection) {\n        var criteria = arrayMap(iteratees, function(iteratee) {\n          return iteratee(value);\n        });\n        return { 'criteria': criteria, 'index': ++index, 'value': value };\n      });\n\n      return baseSortBy(result, function(object, other) {\n        return compareMultiple(object, other, orders);\n      });\n    }\n\n    /**\n     * The base implementation of `_.pick` without support for individual\n     * property identifiers.\n     *\n     * @private\n     * @param {Object} object The source object.\n     * @param {string[]} paths The property paths to pick.\n     * @returns {Object} Returns the new object.\n     */\n    function basePick(object, paths) {\n      return basePickBy(object, paths, function(value, path) {\n        return hasIn(object, path);\n      });\n    }\n\n    /**\n     * The base implementation of  `_.pickBy` without support for iteratee shorthands.\n     *\n     * @private\n     * @param {Object} object The source object.\n     * @param {string[]} paths The property paths to pick.\n     * @param {Function} predicate The function invoked per property.\n     * @returns {Object} Returns the new object.\n     */\n    function basePickBy(object, paths, predicate) {\n      var index = -1,\n          length = paths.length,\n          result = {};\n\n      while (++index < length) {\n        var path = paths[index],\n            value = baseGet(object, path);\n\n        if (predicate(value, path)) {\n          baseSet(result, castPath(path, object), value);\n        }\n      }\n      return result;\n    }\n\n    /**\n     * A specialized version of `baseProperty` which supports deep paths.\n     *\n     * @private\n     * @param {Array|string} path The path of the property to get.\n     * @returns {Function} Returns the new accessor function.\n     */\n    function basePropertyDeep(path) {\n      return function(object) {\n        return baseGet(object, path);\n      };\n    }\n\n    /**\n     * The base implementation of `_.pullAllBy` without support for iteratee\n     * shorthands.\n     *\n     * @private\n     * @param {Array} array The array to modify.\n     * @param {Array} values The values to remove.\n     * @param {Function} [iteratee] The iteratee invoked per element.\n     * @param {Function} [comparator] The comparator invoked per element.\n     * @returns {Array} Returns `array`.\n     */\n    function basePullAll(array, values, iteratee, comparator) {\n      var indexOf = comparator ? baseIndexOfWith : baseIndexOf,\n          index = -1,\n          length = values.length,\n          seen = array;\n\n      if (array === values) {\n        values = copyArray(values);\n      }\n      if (iteratee) {\n        seen = arrayMap(array, baseUnary(iteratee));\n      }\n      while (++index < length) {\n        var fromIndex = 0,\n            value = values[index],\n            computed = iteratee ? iteratee(value) : value;\n\n        while ((fromIndex = indexOf(seen, computed, fromIndex, comparator)) > -1) {\n          if (seen !== array) {\n            splice.call(seen, fromIndex, 1);\n          }\n          splice.call(array, fromIndex, 1);\n        }\n      }\n      return array;\n    }\n\n    /**\n     * The base implementation of `_.pullAt` without support for individual\n     * indexes or capturing the removed elements.\n     *\n     * @private\n     * @param {Array} array The array to modify.\n     * @param {number[]} indexes The indexes of elements to remove.\n     * @returns {Array} Returns `array`.\n     */\n    function basePullAt(array, indexes) {\n      var length = array ? indexes.length : 0,\n          lastIndex = length - 1;\n\n      while (length--) {\n        var index = indexes[length];\n        if (length == lastIndex || index !== previous) {\n          var previous = index;\n          if (isIndex(index)) {\n            splice.call(array, index, 1);\n          } else {\n            baseUnset(array, index);\n          }\n        }\n      }\n      return array;\n    }\n\n    /**\n     * The base implementation of `_.random` without support for returning\n     * floating-point numbers.\n     *\n     * @private\n     * @param {number} lower The lower bound.\n     * @param {number} upper The upper bound.\n     * @returns {number} Returns the random number.\n     */\n    function baseRandom(lower, upper) {\n      return lower + nativeFloor(nativeRandom() * (upper - lower + 1));\n    }\n\n    /**\n     * The base implementation of `_.range` and `_.rangeRight` which doesn't\n     * coerce arguments.\n     *\n     * @private\n     * @param {number} start The start of the range.\n     * @param {number} end The end of the range.\n     * @param {number} step The value to increment or decrement by.\n     * @param {boolean} [fromRight] Specify iterating from right to left.\n     * @returns {Array} Returns the range of numbers.\n     */\n    function baseRange(start, end, step, fromRight) {\n      var index = -1,\n          length = nativeMax(nativeCeil((end - start) / (step || 1)), 0),\n          result = Array(length);\n\n      while (length--) {\n        result[fromRight ? length : ++index] = start;\n        start += step;\n      }\n      return result;\n    }\n\n    /**\n     * The base implementation of `_.repeat` which doesn't coerce arguments.\n     *\n     * @private\n     * @param {string} string The string to repeat.\n     * @param {number} n The number of times to repeat the string.\n     * @returns {string} Returns the repeated string.\n     */\n    function baseRepeat(string, n) {\n      var result = '';\n      if (!string || n < 1 || n > MAX_SAFE_INTEGER) {\n        return result;\n      }\n      // Leverage the exponentiation by squaring algorithm for a faster repeat.\n      // See https://en.wikipedia.org/wiki/Exponentiation_by_squaring for more details.\n      do {\n        if (n % 2) {\n          result += string;\n        }\n        n = nativeFloor(n / 2);\n        if (n) {\n          string += string;\n        }\n      } while (n);\n\n      return result;\n    }\n\n    /**\n     * The base implementation of `_.rest` which doesn't validate or coerce arguments.\n     *\n     * @private\n     * @param {Function} func The function to apply a rest parameter to.\n     * @param {number} [start=func.length-1] The start position of the rest parameter.\n     * @returns {Function} Returns the new function.\n     */\n    function baseRest(func, start) {\n      return setToString(overRest(func, start, identity), func + '');\n    }\n\n    /**\n     * The base implementation of `_.sample`.\n     *\n     * @private\n     * @param {Array|Object} collection The collection to sample.\n     * @returns {*} Returns the random element.\n     */\n    function baseSample(collection) {\n      return arraySample(values(collection));\n    }\n\n    /**\n     * The base implementation of `_.sampleSize` without param guards.\n     *\n     * @private\n     * @param {Array|Object} collection The collection to sample.\n     * @param {number} n The number of elements to sample.\n     * @returns {Array} Returns the random elements.\n     */\n    function baseSampleSize(collection, n) {\n      var array = values(collection);\n      return shuffleSelf(array, baseClamp(n, 0, array.length));\n    }\n\n    /**\n     * The base implementation of `_.set`.\n     *\n     * @private\n     * @param {Object} object The object to modify.\n     * @param {Array|string} path The path of the property to set.\n     * @param {*} value The value to set.\n     * @param {Function} [customizer] The function to customize path creation.\n     * @returns {Object} Returns `object`.\n     */\n    function baseSet(object, path, value, customizer) {\n      if (!isObject(object)) {\n        return object;\n      }\n      path = castPath(path, object);\n\n      var index = -1,\n          length = path.length,\n          lastIndex = length - 1,\n          nested = object;\n\n      while (nested != null && ++index < length) {\n        var key = toKey(path[index]),\n            newValue = value;\n\n        if (key === '__proto__' || key === 'constructor' || key === 'prototype') {\n          return object;\n        }\n\n        if (index != lastIndex) {\n          var objValue = nested[key];\n          newValue = customizer ? customizer(objValue, key, nested) : undefined;\n          if (newValue === undefined) {\n            newValue = isObject(objValue)\n              ? objValue\n              : (isIndex(path[index + 1]) ? [] : {});\n          }\n        }\n        assignValue(nested, key, newValue);\n        nested = nested[key];\n      }\n      return object;\n    }\n\n    /**\n     * The base implementation of `setData` without support for hot loop shorting.\n     *\n     * @private\n     * @param {Function} func The function to associate metadata with.\n     * @param {*} data The metadata.\n     * @returns {Function} Returns `func`.\n     */\n    var baseSetData = !metaMap ? identity : function(func, data) {\n      metaMap.set(func, data);\n      return func;\n    };\n\n    /**\n     * The base implementation of `setToString` without support for hot loop shorting.\n     *\n     * @private\n     * @param {Function} func The function to modify.\n     * @param {Function} string The `toString` result.\n     * @returns {Function} Returns `func`.\n     */\n    var baseSetToString = !defineProperty ? identity : function(func, string) {\n      return defineProperty(func, 'toString', {\n        'configurable': true,\n        'enumerable': false,\n        'value': constant(string),\n        'writable': true\n      });\n    };\n\n    /**\n     * The base implementation of `_.shuffle`.\n     *\n     * @private\n     * @param {Array|Object} collection The collection to shuffle.\n     * @returns {Array} Returns the new shuffled array.\n     */\n    function baseShuffle(collection) {\n      return shuffleSelf(values(collection));\n    }\n\n    /**\n     * The base implementation of `_.slice` without an iteratee call guard.\n     *\n     * @private\n     * @param {Array} array The array to slice.\n     * @param {number} [start=0] The start position.\n     * @param {number} [end=array.length] The end position.\n     * @returns {Array} Returns the slice of `array`.\n     */\n    function baseSlice(array, start, end) {\n      var index = -1,\n          length = array.length;\n\n      if (start < 0) {\n        start = -start > length ? 0 : (length + start);\n      }\n      end = end > length ? length : end;\n      if (end < 0) {\n        end += length;\n      }\n      length = start > end ? 0 : ((end - start) >>> 0);\n      start >>>= 0;\n\n      var result = Array(length);\n      while (++index < length) {\n        result[index] = array[index + start];\n      }\n      return result;\n    }\n\n    /**\n     * The base implementation of `_.some` without support for iteratee shorthands.\n     *\n     * @private\n     * @param {Array|Object} collection The collection to iterate over.\n     * @param {Function} predicate The function invoked per iteration.\n     * @returns {boolean} Returns `true` if any element passes the predicate check,\n     *  else `false`.\n     */\n    function baseSome(collection, predicate) {\n      var result;\n\n      baseEach(collection, function(value, index, collection) {\n        result = predicate(value, index, collection);\n        return !result;\n      });\n      return !!result;\n    }\n\n    /**\n     * The base implementation of `_.sortedIndex` and `_.sortedLastIndex` which\n     * performs a binary search of `array` to determine the index at which `value`\n     * should be inserted into `array` in order to maintain its sort order.\n     *\n     * @private\n     * @param {Array} array The sorted array to inspect.\n     * @param {*} value The value to evaluate.\n     * @param {boolean} [retHighest] Specify returning the highest qualified index.\n     * @returns {number} Returns the index at which `value` should be inserted\n     *  into `array`.\n     */\n    function baseSortedIndex(array, value, retHighest) {\n      var low = 0,\n          high = array == null ? low : array.length;\n\n      if (typeof value == 'number' && value === value && high <= HALF_MAX_ARRAY_LENGTH) {\n        while (low < high) {\n          var mid = (low + high) >>> 1,\n              computed = array[mid];\n\n          if (computed !== null && !isSymbol(computed) &&\n              (retHighest ? (computed <= value) : (computed < value))) {\n            low = mid + 1;\n          } else {\n            high = mid;\n          }\n        }\n        return high;\n      }\n      return baseSortedIndexBy(array, value, identity, retHighest);\n    }\n\n    /**\n     * The base implementation of `_.sortedIndexBy` and `_.sortedLastIndexBy`\n     * which invokes `iteratee` for `value` and each element of `array` to compute\n     * their sort ranking. The iteratee is invoked with one argument; (value).\n     *\n     * @private\n     * @param {Array} array The sorted array to inspect.\n     * @param {*} value The value to evaluate.\n     * @param {Function} iteratee The iteratee invoked per element.\n     * @param {boolean} [retHighest] Specify returning the highest qualified index.\n     * @returns {number} Returns the index at which `value` should be inserted\n     *  into `array`.\n     */\n    function baseSortedIndexBy(array, value, iteratee, retHighest) {\n      var low = 0,\n          high = array == null ? 0 : array.length;\n      if (high === 0) {\n        return 0;\n      }\n\n      value = iteratee(value);\n      var valIsNaN = value !== value,\n          valIsNull = value === null,\n          valIsSymbol = isSymbol(value),\n          valIsUndefined = value === undefined;\n\n      while (low < high) {\n        var mid = nativeFloor((low + high) / 2),\n            computed = iteratee(array[mid]),\n            othIsDefined = computed !== undefined,\n            othIsNull = computed === null,\n            othIsReflexive = computed === computed,\n            othIsSymbol = isSymbol(computed);\n\n        if (valIsNaN) {\n          var setLow = retHighest || othIsReflexive;\n        } else if (valIsUndefined) {\n          setLow = othIsReflexive && (retHighest || othIsDefined);\n        } else if (valIsNull) {\n          setLow = othIsReflexive && othIsDefined && (retHighest || !othIsNull);\n        } else if (valIsSymbol) {\n          setLow = othIsReflexive && othIsDefined && !othIsNull && (retHighest || !othIsSymbol);\n        } else if (othIsNull || othIsSymbol) {\n          setLow = false;\n        } else {\n          setLow = retHighest ? (computed <= value) : (computed < value);\n        }\n        if (setLow) {\n          low = mid + 1;\n        } else {\n          high = mid;\n        }\n      }\n      return nativeMin(high, MAX_ARRAY_INDEX);\n    }\n\n    /**\n     * The base implementation of `_.sortedUniq` and `_.sortedUniqBy` without\n     * support for iteratee shorthands.\n     *\n     * @private\n     * @param {Array} array The array to inspect.\n     * @param {Function} [iteratee] The iteratee invoked per element.\n     * @returns {Array} Returns the new duplicate free array.\n     */\n    function baseSortedUniq(array, iteratee) {\n      var index = -1,\n          length = array.length,\n          resIndex = 0,\n          result = [];\n\n      while (++index < length) {\n        var value = array[index],\n            computed = iteratee ? iteratee(value) : value;\n\n        if (!index || !eq(computed, seen)) {\n          var seen = computed;\n          result[resIndex++] = value === 0 ? 0 : value;\n        }\n      }\n      return result;\n    }\n\n    /**\n     * The base implementation of `_.toNumber` which doesn't ensure correct\n     * conversions of binary, hexadecimal, or octal string values.\n     *\n     * @private\n     * @param {*} value The value to process.\n     * @returns {number} Returns the number.\n     */\n    function baseToNumber(value) {\n      if (typeof value == 'number') {\n        return value;\n      }\n      if (isSymbol(value)) {\n        return NAN;\n      }\n      return +value;\n    }\n\n    /**\n     * The base implementation of `_.toString` which doesn't convert nullish\n     * values to empty strings.\n     *\n     * @private\n     * @param {*} value The value to process.\n     * @returns {string} Returns the string.\n     */\n    function baseToString(value) {\n      // Exit early for strings to avoid a performance hit in some environments.\n      if (typeof value == 'string') {\n        return value;\n      }\n      if (isArray(value)) {\n        // Recursively convert values (susceptible to call stack limits).\n        return arrayMap(value, baseToString) + '';\n      }\n      if (isSymbol(value)) {\n        return symbolToString ? symbolToString.call(value) : '';\n      }\n      var result = (value + '');\n      return (result == '0' && (1 / value) == -INFINITY) ? '-0' : result;\n    }\n\n    /**\n     * The base implementation of `_.uniqBy` without support for iteratee shorthands.\n     *\n     * @private\n     * @param {Array} array The array to inspect.\n     * @param {Function} [iteratee] The iteratee invoked per element.\n     * @param {Function} [comparator] The comparator invoked per element.\n     * @returns {Array} Returns the new duplicate free array.\n     */\n    function baseUniq(array, iteratee, comparator) {\n      var index = -1,\n          includes = arrayIncludes,\n          length = array.length,\n          isCommon = true,\n          result = [],\n          seen = result;\n\n      if (comparator) {\n        isCommon = false;\n        includes = arrayIncludesWith;\n      }\n      else if (length >= LARGE_ARRAY_SIZE) {\n        var set = iteratee ? null : createSet(array);\n        if (set) {\n          return setToArray(set);\n        }\n        isCommon = false;\n        includes = cacheHas;\n        seen = new SetCache;\n      }\n      else {\n        seen = iteratee ? [] : result;\n      }\n      outer:\n      while (++index < length) {\n        var value = array[index],\n            computed = iteratee ? iteratee(value) : value;\n\n        value = (comparator || value !== 0) ? value : 0;\n        if (isCommon && computed === computed) {\n          var seenIndex = seen.length;\n          while (seenIndex--) {\n            if (seen[seenIndex] === computed) {\n              continue outer;\n            }\n          }\n          if (iteratee) {\n            seen.push(computed);\n          }\n          result.push(value);\n        }\n        else if (!includes(seen, computed, comparator)) {\n          if (seen !== result) {\n            seen.push(computed);\n          }\n          result.push(value);\n        }\n      }\n      return result;\n    }\n\n    /**\n     * The base implementation of `_.unset`.\n     *\n     * @private\n     * @param {Object} object The object to modify.\n     * @param {Array|string} path The property path to unset.\n     * @returns {boolean} Returns `true` if the property is deleted, else `false`.\n     */\n    function baseUnset(object, path) {\n      path = castPath(path, object);\n      object = parent(object, path);\n      return object == null || delete object[toKey(last(path))];\n    }\n\n    /**\n     * The base implementation of `_.update`.\n     *\n     * @private\n     * @param {Object} object The object to modify.\n     * @param {Array|string} path The path of the property to update.\n     * @param {Function} updater The function to produce the updated value.\n     * @param {Function} [customizer] The function to customize path creation.\n     * @returns {Object} Returns `object`.\n     */\n    function baseUpdate(object, path, updater, customizer) {\n      return baseSet(object, path, updater(baseGet(object, path)), customizer);\n    }\n\n    /**\n     * The base implementation of methods like `_.dropWhile` and `_.takeWhile`\n     * without support for iteratee shorthands.\n     *\n     * @private\n     * @param {Array} array The array to query.\n     * @param {Function} predicate The function invoked per iteration.\n     * @param {boolean} [isDrop] Specify dropping elements instead of taking them.\n     * @param {boolean} [fromRight] Specify iterating from right to left.\n     * @returns {Array} Returns the slice of `array`.\n     */\n    function baseWhile(array, predicate, isDrop, fromRight) {\n      var length = array.length,\n          index = fromRight ? length : -1;\n\n      while ((fromRight ? index-- : ++index < length) &&\n        predicate(array[index], index, array)) {}\n\n      return isDrop\n        ? baseSlice(array, (fromRight ? 0 : index), (fromRight ? index + 1 : length))\n        : baseSlice(array, (fromRight ? index + 1 : 0), (fromRight ? length : index));\n    }\n\n    /**\n     * The base implementation of `wrapperValue` which returns the result of\n     * performing a sequence of actions on the unwrapped `value`, where each\n     * successive action is supplied the return value of the previous.\n     *\n     * @private\n     * @param {*} value The unwrapped value.\n     * @param {Array} actions Actions to perform to resolve the unwrapped value.\n     * @returns {*} Returns the resolved value.\n     */\n    function baseWrapperValue(value, actions) {\n      var result = value;\n      if (result instanceof LazyWrapper) {\n        result = result.value();\n      }\n      return arrayReduce(actions, function(result, action) {\n        return action.func.apply(action.thisArg, arrayPush([result], action.args));\n      }, result);\n    }\n\n    /**\n     * The base implementation of methods like `_.xor`, without support for\n     * iteratee shorthands, that accepts an array of arrays to inspect.\n     *\n     * @private\n     * @param {Array} arrays The arrays to inspect.\n     * @param {Function} [iteratee] The iteratee invoked per element.\n     * @param {Function} [comparator] The comparator invoked per element.\n     * @returns {Array} Returns the new array of values.\n     */\n    function baseXor(arrays, iteratee, comparator) {\n      var length = arrays.length;\n      if (length < 2) {\n        return length ? baseUniq(arrays[0]) : [];\n      }\n      var index = -1,\n          result = Array(length);\n\n      while (++index < length) {\n        var array = arrays[index],\n            othIndex = -1;\n\n        while (++othIndex < length) {\n          if (othIndex != index) {\n            result[index] = baseDifference(result[index] || array, arrays[othIndex], iteratee, comparator);\n          }\n        }\n      }\n      return baseUniq(baseFlatten(result, 1), iteratee, comparator);\n    }\n\n    /**\n     * This base implementation of `_.zipObject` which assigns values using `assignFunc`.\n     *\n     * @private\n     * @param {Array} props The property identifiers.\n     * @param {Array} values The property values.\n     * @param {Function} assignFunc The function to assign values.\n     * @returns {Object} Returns the new object.\n     */\n    function baseZipObject(props, values, assignFunc) {\n      var index = -1,\n          length = props.length,\n          valsLength = values.length,\n          result = {};\n\n      while (++index < length) {\n        var value = index < valsLength ? values[index] : undefined;\n        assignFunc(result, props[index], value);\n      }\n      return result;\n    }\n\n    /**\n     * Casts `value` to an empty array if it's not an array like object.\n     *\n     * @private\n     * @param {*} value The value to inspect.\n     * @returns {Array|Object} Returns the cast array-like object.\n     */\n    function castArrayLikeObject(value) {\n      return isArrayLikeObject(value) ? value : [];\n    }\n\n    /**\n     * Casts `value` to `identity` if it's not a function.\n     *\n     * @private\n     * @param {*} value The value to inspect.\n     * @returns {Function} Returns cast function.\n     */\n    function castFunction(value) {\n      return typeof value == 'function' ? value : identity;\n    }\n\n    /**\n     * Casts `value` to a path array if it's not one.\n     *\n     * @private\n     * @param {*} value The value to inspect.\n     * @param {Object} [object] The object to query keys on.\n     * @returns {Array} Returns the cast property path array.\n     */\n    function castPath(value, object) {\n      if (isArray(value)) {\n        return value;\n      }\n      return isKey(value, object) ? [value] : stringToPath(toString(value));\n    }\n\n    /**\n     * A `baseRest` alias which can be replaced with `identity` by module\n     * replacement plugins.\n     *\n     * @private\n     * @type {Function}\n     * @param {Function} func The function to apply a rest parameter to.\n     * @returns {Function} Returns the new function.\n     */\n    var castRest = baseRest;\n\n    /**\n     * Casts `array` to a slice if it's needed.\n     *\n     * @private\n     * @param {Array} array The array to inspect.\n     * @param {number} start The start position.\n     * @param {number} [end=array.length] The end position.\n     * @returns {Array} Returns the cast slice.\n     */\n    function castSlice(array, start, end) {\n      var length = array.length;\n      end = end === undefined ? length : end;\n      return (!start && end >= length) ? array : baseSlice(array, start, end);\n    }\n\n    /**\n     * A simple wrapper around the global [`clearTimeout`](https://mdn.io/clearTimeout).\n     *\n     * @private\n     * @param {number|Object} id The timer id or timeout object of the timer to clear.\n     */\n    var clearTimeout = ctxClearTimeout || function(id) {\n      return root.clearTimeout(id);\n    };\n\n    /**\n     * Creates a clone of  `buffer`.\n     *\n     * @private\n     * @param {Buffer} buffer The buffer to clone.\n     * @param {boolean} [isDeep] Specify a deep clone.\n     * @returns {Buffer} Returns the cloned buffer.\n     */\n    function cloneBuffer(buffer, isDeep) {\n      if (isDeep) {\n        return buffer.slice();\n      }\n      var length = buffer.length,\n          result = allocUnsafe ? allocUnsafe(length) : new buffer.constructor(length);\n\n      buffer.copy(result);\n      return result;\n    }\n\n    /**\n     * Creates a clone of `arrayBuffer`.\n     *\n     * @private\n     * @param {ArrayBuffer} arrayBuffer The array buffer to clone.\n     * @returns {ArrayBuffer} Returns the cloned array buffer.\n     */\n    function cloneArrayBuffer(arrayBuffer) {\n      var result = new arrayBuffer.constructor(arrayBuffer.byteLength);\n      new Uint8Array(result).set(new Uint8Array(arrayBuffer));\n      return result;\n    }\n\n    /**\n     * Creates a clone of `dataView`.\n     *\n     * @private\n     * @param {Object} dataView The data view to clone.\n     * @param {boolean} [isDeep] Specify a deep clone.\n     * @returns {Object} Returns the cloned data view.\n     */\n    function cloneDataView(dataView, isDeep) {\n      var buffer = isDeep ? cloneArrayBuffer(dataView.buffer) : dataView.buffer;\n      return new dataView.constructor(buffer, dataView.byteOffset, dataView.byteLength);\n    }\n\n    /**\n     * Creates a clone of `regexp`.\n     *\n     * @private\n     * @param {Object} regexp The regexp to clone.\n     * @returns {Object} Returns the cloned regexp.\n     */\n    function cloneRegExp(regexp) {\n      var result = new regexp.constructor(regexp.source, reFlags.exec(regexp));\n      result.lastIndex = regexp.lastIndex;\n      return result;\n    }\n\n    /**\n     * Creates a clone of the `symbol` object.\n     *\n     * @private\n     * @param {Object} symbol The symbol object to clone.\n     * @returns {Object} Returns the cloned symbol object.\n     */\n    function cloneSymbol(symbol) {\n      return symbolValueOf ? Object(symbolValueOf.call(symbol)) : {};\n    }\n\n    /**\n     * Creates a clone of `typedArray`.\n     *\n     * @private\n     * @param {Object} typedArray The typed array to clone.\n     * @param {boolean} [isDeep] Specify a deep clone.\n     * @returns {Object} Returns the cloned typed array.\n     */\n    function cloneTypedArray(typedArray, isDeep) {\n      var buffer = isDeep ? cloneArrayBuffer(typedArray.buffer) : typedArray.buffer;\n      return new typedArray.constructor(buffer, typedArray.byteOffset, typedArray.length);\n    }\n\n    /**\n     * Compares values to sort them in ascending order.\n     *\n     * @private\n     * @param {*} value The value to compare.\n     * @param {*} other The other value to compare.\n     * @returns {number} Returns the sort order indicator for `value`.\n     */\n    function compareAscending(value, other) {\n      if (value !== other) {\n        var valIsDefined = value !== undefined,\n            valIsNull = value === null,\n            valIsReflexive = value === value,\n            valIsSymbol = isSymbol(value);\n\n        var othIsDefined = other !== undefined,\n            othIsNull = other === null,\n            othIsReflexive = other === other,\n            othIsSymbol = isSymbol(other);\n\n        if ((!othIsNull && !othIsSymbol && !valIsSymbol && value > other) ||\n            (valIsSymbol && othIsDefined && othIsReflexive && !othIsNull && !othIsSymbol) ||\n            (valIsNull && othIsDefined && othIsReflexive) ||\n            (!valIsDefined && othIsReflexive) ||\n            !valIsReflexive) {\n          return 1;\n        }\n        if ((!valIsNull && !valIsSymbol && !othIsSymbol && value < other) ||\n            (othIsSymbol && valIsDefined && valIsReflexive && !valIsNull && !valIsSymbol) ||\n            (othIsNull && valIsDefined && valIsReflexive) ||\n            (!othIsDefined && valIsReflexive) ||\n            !othIsReflexive) {\n          return -1;\n        }\n      }\n      return 0;\n    }\n\n    /**\n     * Used by `_.orderBy` to compare multiple properties of a value to another\n     * and stable sort them.\n     *\n     * If `orders` is unspecified, all values are sorted in ascending order. Otherwise,\n     * specify an order of \"desc\" for descending or \"asc\" for ascending sort order\n     * of corresponding values.\n     *\n     * @private\n     * @param {Object} object The object to compare.\n     * @param {Object} other The other object to compare.\n     * @param {boolean[]|string[]} orders The order to sort by for each property.\n     * @returns {number} Returns the sort order indicator for `object`.\n     */\n    function compareMultiple(object, other, orders) {\n      var index = -1,\n          objCriteria = object.criteria,\n          othCriteria = other.criteria,\n          length = objCriteria.length,\n          ordersLength = orders.length;\n\n      while (++index < length) {\n        var result = compareAscending(objCriteria[index], othCriteria[index]);\n        if (result) {\n          if (index >= ordersLength) {\n            return result;\n          }\n          var order = orders[index];\n          return result * (order == 'desc' ? -1 : 1);\n        }\n      }\n      // Fixes an `Array#sort` bug in the JS engine embedded in Adobe applications\n      // that causes it, under certain circumstances, to provide the same value for\n      // `object` and `other`. See https://github.com/jashkenas/underscore/pull/1247\n      // for more details.\n      //\n      // This also ensures a stable sort in V8 and other engines.\n      // See https://bugs.chromium.org/p/v8/issues/detail?id=90 for more details.\n      return object.index - other.index;\n    }\n\n    /**\n     * Creates an array that is the composition of partially applied arguments,\n     * placeholders, and provided arguments into a single array of arguments.\n     *\n     * @private\n     * @param {Array} args The provided arguments.\n     * @param {Array} partials The arguments to prepend to those provided.\n     * @param {Array} holders The `partials` placeholder indexes.\n     * @params {boolean} [isCurried] Specify composing for a curried function.\n     * @returns {Array} Returns the new array of composed arguments.\n     */\n    function composeArgs(args, partials, holders, isCurried) {\n      var argsIndex = -1,\n          argsLength = args.length,\n          holdersLength = holders.length,\n          leftIndex = -1,\n          leftLength = partials.length,\n          rangeLength = nativeMax(argsLength - holdersLength, 0),\n          result = Array(leftLength + rangeLength),\n          isUncurried = !isCurried;\n\n      while (++leftIndex < leftLength) {\n        result[leftIndex] = partials[leftIndex];\n      }\n      while (++argsIndex < holdersLength) {\n        if (isUncurried || argsIndex < argsLength) {\n          result[holders[argsIndex]] = args[argsIndex];\n        }\n      }\n      while (rangeLength--) {\n        result[leftIndex++] = args[argsIndex++];\n      }\n      return result;\n    }\n\n    /**\n     * This function is like `composeArgs` except that the arguments composition\n     * is tailored for `_.partialRight`.\n     *\n     * @private\n     * @param {Array} args The provided arguments.\n     * @param {Array} partials The arguments to append to those provided.\n     * @param {Array} holders The `partials` placeholder indexes.\n     * @params {boolean} [isCurried] Specify composing for a curried function.\n     * @returns {Array} Returns the new array of composed arguments.\n     */\n    function composeArgsRight(args, partials, holders, isCurried) {\n      var argsIndex = -1,\n          argsLength = args.length,\n          holdersIndex = -1,\n          holdersLength = holders.length,\n          rightIndex = -1,\n          rightLength = partials.length,\n          rangeLength = nativeMax(argsLength - holdersLength, 0),\n          result = Array(rangeLength + rightLength),\n          isUncurried = !isCurried;\n\n      while (++argsIndex < rangeLength) {\n        result[argsIndex] = args[argsIndex];\n      }\n      var offset = argsIndex;\n      while (++rightIndex < rightLength) {\n        result[offset + rightIndex] = partials[rightIndex];\n      }\n      while (++holdersIndex < holdersLength) {\n        if (isUncurried || argsIndex < argsLength) {\n          result[offset + holders[holdersIndex]] = args[argsIndex++];\n        }\n      }\n      return result;\n    }\n\n    /**\n     * Copies the values of `source` to `array`.\n     *\n     * @private\n     * @param {Array} source The array to copy values from.\n     * @param {Array} [array=[]] The array to copy values to.\n     * @returns {Array} Returns `array`.\n     */\n    function copyArray(source, array) {\n      var index = -1,\n          length = source.length;\n\n      array || (array = Array(length));\n      while (++index < length) {\n        array[index] = source[index];\n      }\n      return array;\n    }\n\n    /**\n     * Copies properties of `source` to `object`.\n     *\n     * @private\n     * @param {Object} source The object to copy properties from.\n     * @param {Array} props The property identifiers to copy.\n     * @param {Object} [object={}] The object to copy properties to.\n     * @param {Function} [customizer] The function to customize copied values.\n     * @returns {Object} Returns `object`.\n     */\n    function copyObject(source, props, object, customizer) {\n      var isNew = !object;\n      object || (object = {});\n\n      var index = -1,\n          length = props.length;\n\n      while (++index < length) {\n        var key = props[index];\n\n        var newValue = customizer\n          ? customizer(object[key], source[key], key, object, source)\n          : undefined;\n\n        if (newValue === undefined) {\n          newValue = source[key];\n        }\n        if (isNew) {\n          baseAssignValue(object, key, newValue);\n        } else {\n          assignValue(object, key, newValue);\n        }\n      }\n      return object;\n    }\n\n    /**\n     * Copies own symbols of `source` to `object`.\n     *\n     * @private\n     * @param {Object} source The object to copy symbols from.\n     * @param {Object} [object={}] The object to copy symbols to.\n     * @returns {Object} Returns `object`.\n     */\n    function copySymbols(source, object) {\n      return copyObject(source, getSymbols(source), object);\n    }\n\n    /**\n     * Copies own and inherited symbols of `source` to `object`.\n     *\n     * @private\n     * @param {Object} source The object to copy symbols from.\n     * @param {Object} [object={}] The object to copy symbols to.\n     * @returns {Object} Returns `object`.\n     */\n    function copySymbolsIn(source, object) {\n      return copyObject(source, getSymbolsIn(source), object);\n    }\n\n    /**\n     * Creates a function like `_.groupBy`.\n     *\n     * @private\n     * @param {Function} setter The function to set accumulator values.\n     * @param {Function} [initializer] The accumulator object initializer.\n     * @returns {Function} Returns the new aggregator function.\n     */\n    function createAggregator(setter, initializer) {\n      return function(collection, iteratee) {\n        var func = isArray(collection) ? arrayAggregator : baseAggregator,\n            accumulator = initializer ? initializer() : {};\n\n        return func(collection, setter, getIteratee(iteratee, 2), accumulator);\n      };\n    }\n\n    /**\n     * Creates a function like `_.assign`.\n     *\n     * @private\n     * @param {Function} assigner The function to assign values.\n     * @returns {Function} Returns the new assigner function.\n     */\n    function createAssigner(assigner) {\n      return baseRest(function(object, sources) {\n        var index = -1,\n            length = sources.length,\n            customizer = length > 1 ? sources[length - 1] : undefined,\n            guard = length > 2 ? sources[2] : undefined;\n\n        customizer = (assigner.length > 3 && typeof customizer == 'function')\n          ? (length--, customizer)\n          : undefined;\n\n        if (guard && isIterateeCall(sources[0], sources[1], guard)) {\n          customizer = length < 3 ? undefined : customizer;\n          length = 1;\n        }\n        object = Object(object);\n        while (++index < length) {\n          var source = sources[index];\n          if (source) {\n            assigner(object, source, index, customizer);\n          }\n        }\n        return object;\n      });\n    }\n\n    /**\n     * Creates a `baseEach` or `baseEachRight` function.\n     *\n     * @private\n     * @param {Function} eachFunc The function to iterate over a collection.\n     * @param {boolean} [fromRight] Specify iterating from right to left.\n     * @returns {Function} Returns the new base function.\n     */\n    function createBaseEach(eachFunc, fromRight) {\n      return function(collection, iteratee) {\n        if (collection == null) {\n          return collection;\n        }\n        if (!isArrayLike(collection)) {\n          return eachFunc(collection, iteratee);\n        }\n        var length = collection.length,\n            index = fromRight ? length : -1,\n            iterable = Object(collection);\n\n        while ((fromRight ? index-- : ++index < length)) {\n          if (iteratee(iterable[index], index, iterable) === false) {\n            break;\n          }\n        }\n        return collection;\n      };\n    }\n\n    /**\n     * Creates a base function for methods like `_.forIn` and `_.forOwn`.\n     *\n     * @private\n     * @param {boolean} [fromRight] Specify iterating from right to left.\n     * @returns {Function} Returns the new base function.\n     */\n    function createBaseFor(fromRight) {\n      return function(object, iteratee, keysFunc) {\n        var index = -1,\n            iterable = Object(object),\n            props = keysFunc(object),\n            length = props.length;\n\n        while (length--) {\n          var key = props[fromRight ? length : ++index];\n          if (iteratee(iterable[key], key, iterable) === false) {\n            break;\n          }\n        }\n        return object;\n      };\n    }\n\n    /**\n     * Creates a function that wraps `func` to invoke it with the optional `this`\n     * binding of `thisArg`.\n     *\n     * @private\n     * @param {Function} func The function to wrap.\n     * @param {number} bitmask The bitmask flags. See `createWrap` for more details.\n     * @param {*} [thisArg] The `this` binding of `func`.\n     * @returns {Function} Returns the new wrapped function.\n     */\n    function createBind(func, bitmask, thisArg) {\n      var isBind = bitmask & WRAP_BIND_FLAG,\n          Ctor = createCtor(func);\n\n      function wrapper() {\n        var fn = (this && this !== root && this instanceof wrapper) ? Ctor : func;\n        return fn.apply(isBind ? thisArg : this, arguments);\n      }\n      return wrapper;\n    }\n\n    /**\n     * Creates a function like `_.lowerFirst`.\n     *\n     * @private\n     * @param {string} methodName The name of the `String` case method to use.\n     * @returns {Function} Returns the new case function.\n     */\n    function createCaseFirst(methodName) {\n      return function(string) {\n        string = toString(string);\n\n        var strSymbols = hasUnicode(string)\n          ? stringToArray(string)\n          : undefined;\n\n        var chr = strSymbols\n          ? strSymbols[0]\n          : string.charAt(0);\n\n        var trailing = strSymbols\n          ? castSlice(strSymbols, 1).join('')\n          : string.slice(1);\n\n        return chr[methodName]() + trailing;\n      };\n    }\n\n    /**\n     * Creates a function like `_.camelCase`.\n     *\n     * @private\n     * @param {Function} callback The function to combine each word.\n     * @returns {Function} Returns the new compounder function.\n     */\n    function createCompounder(callback) {\n      return function(string) {\n        return arrayReduce(words(deburr(string).replace(reApos, '')), callback, '');\n      };\n    }\n\n    /**\n     * Creates a function that produces an instance of `Ctor` regardless of\n     * whether it was invoked as part of a `new` expression or by `call` or `apply`.\n     *\n     * @private\n     * @param {Function} Ctor The constructor to wrap.\n     * @returns {Function} Returns the new wrapped function.\n     */\n    function createCtor(Ctor) {\n      return function() {\n        // Use a `switch` statement to work with class constructors. See\n        // http://ecma-international.org/ecma-262/7.0/#sec-ecmascript-function-objects-call-thisargument-argumentslist\n        // for more details.\n        var args = arguments;\n        switch (args.length) {\n          case 0: return new Ctor;\n          case 1: return new Ctor(args[0]);\n          case 2: return new Ctor(args[0], args[1]);\n          case 3: return new Ctor(args[0], args[1], args[2]);\n          case 4: return new Ctor(args[0], args[1], args[2], args[3]);\n          case 5: return new Ctor(args[0], args[1], args[2], args[3], args[4]);\n          case 6: return new Ctor(args[0], args[1], args[2], args[3], args[4], args[5]);\n          case 7: return new Ctor(args[0], args[1], args[2], args[3], args[4], args[5], args[6]);\n        }\n        var thisBinding = baseCreate(Ctor.prototype),\n            result = Ctor.apply(thisBinding, args);\n\n        // Mimic the constructor's `return` behavior.\n        // See https://es5.github.io/#x13.2.2 for more details.\n        return isObject(result) ? result : thisBinding;\n      };\n    }\n\n    /**\n     * Creates a function that wraps `func` to enable currying.\n     *\n     * @private\n     * @param {Function} func The function to wrap.\n     * @param {number} bitmask The bitmask flags. See `createWrap` for more details.\n     * @param {number} arity The arity of `func`.\n     * @returns {Function} Returns the new wrapped function.\n     */\n    function createCurry(func, bitmask, arity) {\n      var Ctor = createCtor(func);\n\n      function wrapper() {\n        var length = arguments.length,\n            args = Array(length),\n            index = length,\n            placeholder = getHolder(wrapper);\n\n        while (index--) {\n          args[index] = arguments[index];\n        }\n        var holders = (length < 3 && args[0] !== placeholder && args[length - 1] !== placeholder)\n          ? []\n          : replaceHolders(args, placeholder);\n\n        length -= holders.length;\n        if (length < arity) {\n          return createRecurry(\n            func, bitmask, createHybrid, wrapper.placeholder, undefined,\n            args, holders, undefined, undefined, arity - length);\n        }\n        var fn = (this && this !== root && this instanceof wrapper) ? Ctor : func;\n        return apply(fn, this, args);\n      }\n      return wrapper;\n    }\n\n    /**\n     * Creates a `_.find` or `_.findLast` function.\n     *\n     * @private\n     * @param {Function} findIndexFunc The function to find the collection index.\n     * @returns {Function} Returns the new find function.\n     */\n    function createFind(findIndexFunc) {\n      return function(collection, predicate, fromIndex) {\n        var iterable = Object(collection);\n        if (!isArrayLike(collection)) {\n          var iteratee = getIteratee(predicate, 3);\n          collection = keys(collection);\n          predicate = function(key) { return iteratee(iterable[key], key, iterable); };\n        }\n        var index = findIndexFunc(collection, predicate, fromIndex);\n        return index > -1 ? iterable[iteratee ? collection[index] : index] : undefined;\n      };\n    }\n\n    /**\n     * Creates a `_.flow` or `_.flowRight` function.\n     *\n     * @private\n     * @param {boolean} [fromRight] Specify iterating from right to left.\n     * @returns {Function} Returns the new flow function.\n     */\n    function createFlow(fromRight) {\n      return flatRest(function(funcs) {\n        var length = funcs.length,\n            index = length,\n            prereq = LodashWrapper.prototype.thru;\n\n        if (fromRight) {\n          funcs.reverse();\n        }\n        while (index--) {\n          var func = funcs[index];\n          if (typeof func != 'function') {\n            throw new TypeError(FUNC_ERROR_TEXT);\n          }\n          if (prereq && !wrapper && getFuncName(func) == 'wrapper') {\n            var wrapper = new LodashWrapper([], true);\n          }\n        }\n        index = wrapper ? index : length;\n        while (++index < length) {\n          func = funcs[index];\n\n          var funcName = getFuncName(func),\n              data = funcName == 'wrapper' ? getData(func) : undefined;\n\n          if (data && isLaziable(data[0]) &&\n                data[1] == (WRAP_ARY_FLAG | WRAP_CURRY_FLAG | WRAP_PARTIAL_FLAG | WRAP_REARG_FLAG) &&\n                !data[4].length && data[9] == 1\n              ) {\n            wrapper = wrapper[getFuncName(data[0])].apply(wrapper, data[3]);\n          } else {\n            wrapper = (func.length == 1 && isLaziable(func))\n              ? wrapper[funcName]()\n              : wrapper.thru(func);\n          }\n        }\n        return function() {\n          var args = arguments,\n              value = args[0];\n\n          if (wrapper && args.length == 1 && isArray(value)) {\n            return wrapper.plant(value).value();\n          }\n          var index = 0,\n              result = length ? funcs[index].apply(this, args) : value;\n\n          while (++index < length) {\n            result = funcs[index].call(this, result);\n          }\n          return result;\n        };\n      });\n    }\n\n    /**\n     * Creates a function that wraps `func` to invoke it with optional `this`\n     * binding of `thisArg`, partial application, and currying.\n     *\n     * @private\n     * @param {Function|string} func The function or method name to wrap.\n     * @param {number} bitmask The bitmask flags. See `createWrap` for more details.\n     * @param {*} [thisArg] The `this` binding of `func`.\n     * @param {Array} [partials] The arguments to prepend to those provided to\n     *  the new function.\n     * @param {Array} [holders] The `partials` placeholder indexes.\n     * @param {Array} [partialsRight] The arguments to append to those provided\n     *  to the new function.\n     * @param {Array} [holdersRight] The `partialsRight` placeholder indexes.\n     * @param {Array} [argPos] The argument positions of the new function.\n     * @param {number} [ary] The arity cap of `func`.\n     * @param {number} [arity] The arity of `func`.\n     * @returns {Function} Returns the new wrapped function.\n     */\n    function createHybrid(func, bitmask, thisArg, partials, holders, partialsRight, holdersRight, argPos, ary, arity) {\n      var isAry = bitmask & WRAP_ARY_FLAG,\n          isBind = bitmask & WRAP_BIND_FLAG,\n          isBindKey = bitmask & WRAP_BIND_KEY_FLAG,\n          isCurried = bitmask & (WRAP_CURRY_FLAG | WRAP_CURRY_RIGHT_FLAG),\n          isFlip = bitmask & WRAP_FLIP_FLAG,\n          Ctor = isBindKey ? undefined : createCtor(func);\n\n      function wrapper() {\n        var length = arguments.length,\n            args = Array(length),\n            index = length;\n\n        while (index--) {\n          args[index] = arguments[index];\n        }\n        if (isCurried) {\n          var placeholder = getHolder(wrapper),\n              holdersCount = countHolders(args, placeholder);\n        }\n        if (partials) {\n          args = composeArgs(args, partials, holders, isCurried);\n        }\n        if (partialsRight) {\n          args = composeArgsRight(args, partialsRight, holdersRight, isCurried);\n        }\n        length -= holdersCount;\n        if (isCurried && length < arity) {\n          var newHolders = replaceHolders(args, placeholder);\n          return createRecurry(\n            func, bitmask, createHybrid, wrapper.placeholder, thisArg,\n            args, newHolders, argPos, ary, arity - length\n          );\n        }\n        var thisBinding = isBind ? thisArg : this,\n            fn = isBindKey ? thisBinding[func] : func;\n\n        length = args.length;\n        if (argPos) {\n          args = reorder(args, argPos);\n        } else if (isFlip && length > 1) {\n          args.reverse();\n        }\n        if (isAry && ary < length) {\n          args.length = ary;\n        }\n        if (this && this !== root && this instanceof wrapper) {\n          fn = Ctor || createCtor(fn);\n        }\n        return fn.apply(thisBinding, args);\n      }\n      return wrapper;\n    }\n\n    /**\n     * Creates a function like `_.invertBy`.\n     *\n     * @private\n     * @param {Function} setter The function to set accumulator values.\n     * @param {Function} toIteratee The function to resolve iteratees.\n     * @returns {Function} Returns the new inverter function.\n     */\n    function createInverter(setter, toIteratee) {\n      return function(object, iteratee) {\n        return baseInverter(object, setter, toIteratee(iteratee), {});\n      };\n    }\n\n    /**\n     * Creates a function that performs a mathematical operation on two values.\n     *\n     * @private\n     * @param {Function} operator The function to perform the operation.\n     * @param {number} [defaultValue] The value used for `undefined` arguments.\n     * @returns {Function} Returns the new mathematical operation function.\n     */\n    function createMathOperation(operator, defaultValue) {\n      return function(value, other) {\n        var result;\n        if (value === undefined && other === undefined) {\n          return defaultValue;\n        }\n        if (value !== undefined) {\n          result = value;\n        }\n        if (other !== undefined) {\n          if (result === undefined) {\n            return other;\n          }\n          if (typeof value == 'string' || typeof other == 'string') {\n            value = baseToString(value);\n            other = baseToString(other);\n          } else {\n            value = baseToNumber(value);\n            other = baseToNumber(other);\n          }\n          result = operator(value, other);\n        }\n        return result;\n      };\n    }\n\n    /**\n     * Creates a function like `_.over`.\n     *\n     * @private\n     * @param {Function} arrayFunc The function to iterate over iteratees.\n     * @returns {Function} Returns the new over function.\n     */\n    function createOver(arrayFunc) {\n      return flatRest(function(iteratees) {\n        iteratees = arrayMap(iteratees, baseUnary(getIteratee()));\n        return baseRest(function(args) {\n          var thisArg = this;\n          return arrayFunc(iteratees, function(iteratee) {\n            return apply(iteratee, thisArg, args);\n          });\n        });\n      });\n    }\n\n    /**\n     * Creates the padding for `string` based on `length`. The `chars` string\n     * is truncated if the number of characters exceeds `length`.\n     *\n     * @private\n     * @param {number} length The padding length.\n     * @param {string} [chars=' '] The string used as padding.\n     * @returns {string} Returns the padding for `string`.\n     */\n    function createPadding(length, chars) {\n      chars = chars === undefined ? ' ' : baseToString(chars);\n\n      var charsLength = chars.length;\n      if (charsLength < 2) {\n        return charsLength ? baseRepeat(chars, length) : chars;\n      }\n      var result = baseRepeat(chars, nativeCeil(length / stringSize(chars)));\n      return hasUnicode(chars)\n        ? castSlice(stringToArray(result), 0, length).join('')\n        : result.slice(0, length);\n    }\n\n    /**\n     * Creates a function that wraps `func` to invoke it with the `this` binding\n     * of `thisArg` and `partials` prepended to the arguments it receives.\n     *\n     * @private\n     * @param {Function} func The function to wrap.\n     * @param {number} bitmask The bitmask flags. See `createWrap` for more details.\n     * @param {*} thisArg The `this` binding of `func`.\n     * @param {Array} partials The arguments to prepend to those provided to\n     *  the new function.\n     * @returns {Function} Returns the new wrapped function.\n     */\n    function createPartial(func, bitmask, thisArg, partials) {\n      var isBind = bitmask & WRAP_BIND_FLAG,\n          Ctor = createCtor(func);\n\n      function wrapper() {\n        var argsIndex = -1,\n            argsLength = arguments.length,\n            leftIndex = -1,\n            leftLength = partials.length,\n            args = Array(leftLength + argsLength),\n            fn = (this && this !== root && this instanceof wrapper) ? Ctor : func;\n\n        while (++leftIndex < leftLength) {\n          args[leftIndex] = partials[leftIndex];\n        }\n        while (argsLength--) {\n          args[leftIndex++] = arguments[++argsIndex];\n        }\n        return apply(fn, isBind ? thisArg : this, args);\n      }\n      return wrapper;\n    }\n\n    /**\n     * Creates a `_.range` or `_.rangeRight` function.\n     *\n     * @private\n     * @param {boolean} [fromRight] Specify iterating from right to left.\n     * @returns {Function} Returns the new range function.\n     */\n    function createRange(fromRight) {\n      return function(start, end, step) {\n        if (step && typeof step != 'number' && isIterateeCall(start, end, step)) {\n          end = step = undefined;\n        }\n        // Ensure the sign of `-0` is preserved.\n        start = toFinite(start);\n        if (end === undefined) {\n          end = start;\n          start = 0;\n        } else {\n          end = toFinite(end);\n        }\n        step = step === undefined ? (start < end ? 1 : -1) : toFinite(step);\n        return baseRange(start, end, step, fromRight);\n      };\n    }\n\n    /**\n     * Creates a function that performs a relational operation on two values.\n     *\n     * @private\n     * @param {Function} operator The function to perform the operation.\n     * @returns {Function} Returns the new relational operation function.\n     */\n    function createRelationalOperation(operator) {\n      return function(value, other) {\n        if (!(typeof value == 'string' && typeof other == 'string')) {\n          value = toNumber(value);\n          other = toNumber(other);\n        }\n        return operator(value, other);\n      };\n    }\n\n    /**\n     * Creates a function that wraps `func` to continue currying.\n     *\n     * @private\n     * @param {Function} func The function to wrap.\n     * @param {number} bitmask The bitmask flags. See `createWrap` for more details.\n     * @param {Function} wrapFunc The function to create the `func` wrapper.\n     * @param {*} placeholder The placeholder value.\n     * @param {*} [thisArg] The `this` binding of `func`.\n     * @param {Array} [partials] The arguments to prepend to those provided to\n     *  the new function.\n     * @param {Array} [holders] The `partials` placeholder indexes.\n     * @param {Array} [argPos] The argument positions of the new function.\n     * @param {number} [ary] The arity cap of `func`.\n     * @param {number} [arity] The arity of `func`.\n     * @returns {Function} Returns the new wrapped function.\n     */\n    function createRecurry(func, bitmask, wrapFunc, placeholder, thisArg, partials, holders, argPos, ary, arity) {\n      var isCurry = bitmask & WRAP_CURRY_FLAG,\n          newHolders = isCurry ? holders : undefined,\n          newHoldersRight = isCurry ? undefined : holders,\n          newPartials = isCurry ? partials : undefined,\n          newPartialsRight = isCurry ? undefined : partials;\n\n      bitmask |= (isCurry ? WRAP_PARTIAL_FLAG : WRAP_PARTIAL_RIGHT_FLAG);\n      bitmask &= ~(isCurry ? WRAP_PARTIAL_RIGHT_FLAG : WRAP_PARTIAL_FLAG);\n\n      if (!(bitmask & WRAP_CURRY_BOUND_FLAG)) {\n        bitmask &= ~(WRAP_BIND_FLAG | WRAP_BIND_KEY_FLAG);\n      }\n      var newData = [\n        func, bitmask, thisArg, newPartials, newHolders, newPartialsRight,\n        newHoldersRight, argPos, ary, arity\n      ];\n\n      var result = wrapFunc.apply(undefined, newData);\n      if (isLaziable(func)) {\n        setData(result, newData);\n      }\n      result.placeholder = placeholder;\n      return setWrapToString(result, func, bitmask);\n    }\n\n    /**\n     * Creates a function like `_.round`.\n     *\n     * @private\n     * @param {string} methodName The name of the `Math` method to use when rounding.\n     * @returns {Function} Returns the new round function.\n     */\n    function createRound(methodName) {\n      var func = Math[methodName];\n      return function(number, precision) {\n        number = toNumber(number);\n        precision = precision == null ? 0 : nativeMin(toInteger(precision), 292);\n        if (precision && nativeIsFinite(number)) {\n          // Shift with exponential notation to avoid floating-point issues.\n          // See [MDN](https://mdn.io/round#Examples) for more details.\n          var pair = (toString(number) + 'e').split('e'),\n              value = func(pair[0] + 'e' + (+pair[1] + precision));\n\n          pair = (toString(value) + 'e').split('e');\n          return +(pair[0] + 'e' + (+pair[1] - precision));\n        }\n        return func(number);\n      };\n    }\n\n    /**\n     * Creates a set object of `values`.\n     *\n     * @private\n     * @param {Array} values The values to add to the set.\n     * @returns {Object} Returns the new set.\n     */\n    var createSet = !(Set && (1 / setToArray(new Set([,-0]))[1]) == INFINITY) ? noop : function(values) {\n      return new Set(values);\n    };\n\n    /**\n     * Creates a `_.toPairs` or `_.toPairsIn` function.\n     *\n     * @private\n     * @param {Function} keysFunc The function to get the keys of a given object.\n     * @returns {Function} Returns the new pairs function.\n     */\n    function createToPairs(keysFunc) {\n      return function(object) {\n        var tag = getTag(object);\n        if (tag == mapTag) {\n          return mapToArray(object);\n        }\n        if (tag == setTag) {\n          return setToPairs(object);\n        }\n        return baseToPairs(object, keysFunc(object));\n      };\n    }\n\n    /**\n     * Creates a function that either curries or invokes `func` with optional\n     * `this` binding and partially applied arguments.\n     *\n     * @private\n     * @param {Function|string} func The function or method name to wrap.\n     * @param {number} bitmask The bitmask flags.\n     *    1 - `_.bind`\n     *    2 - `_.bindKey`\n     *    4 - `_.curry` or `_.curryRight` of a bound function\n     *    8 - `_.curry`\n     *   16 - `_.curryRight`\n     *   32 - `_.partial`\n     *   64 - `_.partialRight`\n     *  128 - `_.rearg`\n     *  256 - `_.ary`\n     *  512 - `_.flip`\n     * @param {*} [thisArg] The `this` binding of `func`.\n     * @param {Array} [partials] The arguments to be partially applied.\n     * @param {Array} [holders] The `partials` placeholder indexes.\n     * @param {Array} [argPos] The argument positions of the new function.\n     * @param {number} [ary] The arity cap of `func`.\n     * @param {number} [arity] The arity of `func`.\n     * @returns {Function} Returns the new wrapped function.\n     */\n    function createWrap(func, bitmask, thisArg, partials, holders, argPos, ary, arity) {\n      var isBindKey = bitmask & WRAP_BIND_KEY_FLAG;\n      if (!isBindKey && typeof func != 'function') {\n        throw new TypeError(FUNC_ERROR_TEXT);\n      }\n      var length = partials ? partials.length : 0;\n      if (!length) {\n        bitmask &= ~(WRAP_PARTIAL_FLAG | WRAP_PARTIAL_RIGHT_FLAG);\n        partials = holders = undefined;\n      }\n      ary = ary === undefined ? ary : nativeMax(toInteger(ary), 0);\n      arity = arity === undefined ? arity : toInteger(arity);\n      length -= holders ? holders.length : 0;\n\n      if (bitmask & WRAP_PARTIAL_RIGHT_FLAG) {\n        var partialsRight = partials,\n            holdersRight = holders;\n\n        partials = holders = undefined;\n      }\n      var data = isBindKey ? undefined : getData(func);\n\n      var newData = [\n        func, bitmask, thisArg, partials, holders, partialsRight, holdersRight,\n        argPos, ary, arity\n      ];\n\n      if (data) {\n        mergeData(newData, data);\n      }\n      func = newData[0];\n      bitmask = newData[1];\n      thisArg = newData[2];\n      partials = newData[3];\n      holders = newData[4];\n      arity = newData[9] = newData[9] === undefined\n        ? (isBindKey ? 0 : func.length)\n        : nativeMax(newData[9] - length, 0);\n\n      if (!arity && bitmask & (WRAP_CURRY_FLAG | WRAP_CURRY_RIGHT_FLAG)) {\n        bitmask &= ~(WRAP_CURRY_FLAG | WRAP_CURRY_RIGHT_FLAG);\n      }\n      if (!bitmask || bitmask == WRAP_BIND_FLAG) {\n        var result = createBind(func, bitmask, thisArg);\n      } else if (bitmask == WRAP_CURRY_FLAG || bitmask == WRAP_CURRY_RIGHT_FLAG) {\n        result = createCurry(func, bitmask, arity);\n      } else if ((bitmask == WRAP_PARTIAL_FLAG || bitmask == (WRAP_BIND_FLAG | WRAP_PARTIAL_FLAG)) && !holders.length) {\n        result = createPartial(func, bitmask, thisArg, partials);\n      } else {\n        result = createHybrid.apply(undefined, newData);\n      }\n      var setter = data ? baseSetData : setData;\n      return setWrapToString(setter(result, newData), func, bitmask);\n    }\n\n    /**\n     * Used by `_.defaults` to customize its `_.assignIn` use to assign properties\n     * of source objects to the destination object for all destination properties\n     * that resolve to `undefined`.\n     *\n     * @private\n     * @param {*} objValue The destination value.\n     * @param {*} srcValue The source value.\n     * @param {string} key The key of the property to assign.\n     * @param {Object} object The parent object of `objValue`.\n     * @returns {*} Returns the value to assign.\n     */\n    function customDefaultsAssignIn(objValue, srcValue, key, object) {\n      if (objValue === undefined ||\n          (eq(objValue, objectProto[key]) && !hasOwnProperty.call(object, key))) {\n        return srcValue;\n      }\n      return objValue;\n    }\n\n    /**\n     * Used by `_.defaultsDeep` to customize its `_.merge` use to merge source\n     * objects into destination objects that are passed thru.\n     *\n     * @private\n     * @param {*} objValue The destination value.\n     * @param {*} srcValue The source value.\n     * @param {string} key The key of the property to merge.\n     * @param {Object} object The parent object of `objValue`.\n     * @param {Object} source The parent object of `srcValue`.\n     * @param {Object} [stack] Tracks traversed source values and their merged\n     *  counterparts.\n     * @returns {*} Returns the value to assign.\n     */\n    function customDefaultsMerge(objValue, srcValue, key, object, source, stack) {\n      if (isObject(objValue) && isObject(srcValue)) {\n        // Recursively merge objects and arrays (susceptible to call stack limits).\n        stack.set(srcValue, objValue);\n        baseMerge(objValue, srcValue, undefined, customDefaultsMerge, stack);\n        stack['delete'](srcValue);\n      }\n      return objValue;\n    }\n\n    /**\n     * Used by `_.omit` to customize its `_.cloneDeep` use to only clone plain\n     * objects.\n     *\n     * @private\n     * @param {*} value The value to inspect.\n     * @param {string} key The key of the property to inspect.\n     * @returns {*} Returns the uncloned value or `undefined` to defer cloning to `_.cloneDeep`.\n     */\n    function customOmitClone(value) {\n      return isPlainObject(value) ? undefined : value;\n    }\n\n    /**\n     * A specialized version of `baseIsEqualDeep` for arrays with support for\n     * partial deep comparisons.\n     *\n     * @private\n     * @param {Array} array The array to compare.\n     * @param {Array} other The other array to compare.\n     * @param {number} bitmask The bitmask flags. See `baseIsEqual` for more details.\n     * @param {Function} customizer The function to customize comparisons.\n     * @param {Function} equalFunc The function to determine equivalents of values.\n     * @param {Object} stack Tracks traversed `array` and `other` objects.\n     * @returns {boolean} Returns `true` if the arrays are equivalent, else `false`.\n     */\n    function equalArrays(array, other, bitmask, customizer, equalFunc, stack) {\n      var isPartial = bitmask & COMPARE_PARTIAL_FLAG,\n          arrLength = array.length,\n          othLength = other.length;\n\n      if (arrLength != othLength && !(isPartial && othLength > arrLength)) {\n        return false;\n      }\n      // Check that cyclic values are equal.\n      var arrStacked = stack.get(array);\n      var othStacked = stack.get(other);\n      if (arrStacked && othStacked) {\n        return arrStacked == other && othStacked == array;\n      }\n      var index = -1,\n          result = true,\n          seen = (bitmask & COMPARE_UNORDERED_FLAG) ? new SetCache : undefined;\n\n      stack.set(array, other);\n      stack.set(other, array);\n\n      // Ignore non-index properties.\n      while (++index < arrLength) {\n        var arrValue = array[index],\n            othValue = other[index];\n\n        if (customizer) {\n          var compared = isPartial\n            ? customizer(othValue, arrValue, index, other, array, stack)\n            : customizer(arrValue, othValue, index, array, other, stack);\n        }\n        if (compared !== undefined) {\n          if (compared) {\n            continue;\n          }\n          result = false;\n          break;\n        }\n        // Recursively compare arrays (susceptible to call stack limits).\n        if (seen) {\n          if (!arraySome(other, function(othValue, othIndex) {\n                if (!cacheHas(seen, othIndex) &&\n                    (arrValue === othValue || equalFunc(arrValue, othValue, bitmask, customizer, stack))) {\n                  return seen.push(othIndex);\n                }\n              })) {\n            result = false;\n            break;\n          }\n        } else if (!(\n              arrValue === othValue ||\n                equalFunc(arrValue, othValue, bitmask, customizer, stack)\n            )) {\n          result = false;\n          break;\n        }\n      }\n      stack['delete'](array);\n      stack['delete'](other);\n      return result;\n    }\n\n    /**\n     * A specialized version of `baseIsEqualDeep` for comparing objects of\n     * the same `toStringTag`.\n     *\n     * **Note:** This function only supports comparing values with tags of\n     * `Boolean`, `Date`, `Error`, `Number`, `RegExp`, or `String`.\n     *\n     * @private\n     * @param {Object} object The object to compare.\n     * @param {Object} other The other object to compare.\n     * @param {string} tag The `toStringTag` of the objects to compare.\n     * @param {number} bitmask The bitmask flags. See `baseIsEqual` for more details.\n     * @param {Function} customizer The function to customize comparisons.\n     * @param {Function} equalFunc The function to determine equivalents of values.\n     * @param {Object} stack Tracks traversed `object` and `other` objects.\n     * @returns {boolean} Returns `true` if the objects are equivalent, else `false`.\n     */\n    function equalByTag(object, other, tag, bitmask, customizer, equalFunc, stack) {\n      switch (tag) {\n        case dataViewTag:\n          if ((object.byteLength != other.byteLength) ||\n              (object.byteOffset != other.byteOffset)) {\n            return false;\n          }\n          object = object.buffer;\n          other = other.buffer;\n\n        case arrayBufferTag:\n          if ((object.byteLength != other.byteLength) ||\n              !equalFunc(new Uint8Array(object), new Uint8Array(other))) {\n            return false;\n          }\n          return true;\n\n        case boolTag:\n        case dateTag:\n        case numberTag:\n          // Coerce booleans to `1` or `0` and dates to milliseconds.\n          // Invalid dates are coerced to `NaN`.\n          return eq(+object, +other);\n\n        case errorTag:\n          return object.name == other.name && object.message == other.message;\n\n        case regexpTag:\n        case stringTag:\n          // Coerce regexes to strings and treat strings, primitives and objects,\n          // as equal. See http://www.ecma-international.org/ecma-262/7.0/#sec-regexp.prototype.tostring\n          // for more details.\n          return object == (other + '');\n\n        case mapTag:\n          var convert = mapToArray;\n\n        case setTag:\n          var isPartial = bitmask & COMPARE_PARTIAL_FLAG;\n          convert || (convert = setToArray);\n\n          if (object.size != other.size && !isPartial) {\n            return false;\n          }\n          // Assume cyclic values are equal.\n          var stacked = stack.get(object);\n          if (stacked) {\n            return stacked == other;\n          }\n          bitmask |= COMPARE_UNORDERED_FLAG;\n\n          // Recursively compare objects (susceptible to call stack limits).\n          stack.set(object, other);\n          var result = equalArrays(convert(object), convert(other), bitmask, customizer, equalFunc, stack);\n          stack['delete'](object);\n          return result;\n\n        case symbolTag:\n          if (symbolValueOf) {\n            return symbolValueOf.call(object) == symbolValueOf.call(other);\n          }\n      }\n      return false;\n    }\n\n    /**\n     * A specialized version of `baseIsEqualDeep` for objects with support for\n     * partial deep comparisons.\n     *\n     * @private\n     * @param {Object} object The object to compare.\n     * @param {Object} other The other object to compare.\n     * @param {number} bitmask The bitmask flags. See `baseIsEqual` for more details.\n     * @param {Function} customizer The function to customize comparisons.\n     * @param {Function} equalFunc The function to determine equivalents of values.\n     * @param {Object} stack Tracks traversed `object` and `other` objects.\n     * @returns {boolean} Returns `true` if the objects are equivalent, else `false`.\n     */\n    function equalObjects(object, other, bitmask, customizer, equalFunc, stack) {\n      var isPartial = bitmask & COMPARE_PARTIAL_FLAG,\n          objProps = getAllKeys(object),\n          objLength = objProps.length,\n          othProps = getAllKeys(other),\n          othLength = othProps.length;\n\n      if (objLength != othLength && !isPartial) {\n        return false;\n      }\n      var index = objLength;\n      while (index--) {\n        var key = objProps[index];\n        if (!(isPartial ? key in other : hasOwnProperty.call(other, key))) {\n          return false;\n        }\n      }\n      // Check that cyclic values are equal.\n      var objStacked = stack.get(object);\n      var othStacked = stack.get(other);\n      if (objStacked && othStacked) {\n        return objStacked == other && othStacked == object;\n      }\n      var result = true;\n      stack.set(object, other);\n      stack.set(other, object);\n\n      var skipCtor = isPartial;\n      while (++index < objLength) {\n        key = objProps[index];\n        var objValue = object[key],\n            othValue = other[key];\n\n        if (customizer) {\n          var compared = isPartial\n            ? customizer(othValue, objValue, key, other, object, stack)\n            : customizer(objValue, othValue, key, object, other, stack);\n        }\n        // Recursively compare objects (susceptible to call stack limits).\n        if (!(compared === undefined\n              ? (objValue === othValue || equalFunc(objValue, othValue, bitmask, customizer, stack))\n              : compared\n            )) {\n          result = false;\n          break;\n        }\n        skipCtor || (skipCtor = key == 'constructor');\n      }\n      if (result && !skipCtor) {\n        var objCtor = object.constructor,\n            othCtor = other.constructor;\n\n        // Non `Object` object instances with different constructors are not equal.\n        if (objCtor != othCtor &&\n            ('constructor' in object && 'constructor' in other) &&\n            !(typeof objCtor == 'function' && objCtor instanceof objCtor &&\n              typeof othCtor == 'function' && othCtor instanceof othCtor)) {\n          result = false;\n        }\n      }\n      stack['delete'](object);\n      stack['delete'](other);\n      return result;\n    }\n\n    /**\n     * A specialized version of `baseRest` which flattens the rest array.\n     *\n     * @private\n     * @param {Function} func The function to apply a rest parameter to.\n     * @returns {Function} Returns the new function.\n     */\n    function flatRest(func) {\n      return setToString(overRest(func, undefined, flatten), func + '');\n    }\n\n    /**\n     * Creates an array of own enumerable property names and symbols of `object`.\n     *\n     * @private\n     * @param {Object} object The object to query.\n     * @returns {Array} Returns the array of property names and symbols.\n     */\n    function getAllKeys(object) {\n      return baseGetAllKeys(object, keys, getSymbols);\n    }\n\n    /**\n     * Creates an array of own and inherited enumerable property names and\n     * symbols of `object`.\n     *\n     * @private\n     * @param {Object} object The object to query.\n     * @returns {Array} Returns the array of property names and symbols.\n     */\n    function getAllKeysIn(object) {\n      return baseGetAllKeys(object, keysIn, getSymbolsIn);\n    }\n\n    /**\n     * Gets metadata for `func`.\n     *\n     * @private\n     * @param {Function} func The function to query.\n     * @returns {*} Returns the metadata for `func`.\n     */\n    var getData = !metaMap ? noop : function(func) {\n      return metaMap.get(func);\n    };\n\n    /**\n     * Gets the name of `func`.\n     *\n     * @private\n     * @param {Function} func The function to query.\n     * @returns {string} Returns the function name.\n     */\n    function getFuncName(func) {\n      var result = (func.name + ''),\n          array = realNames[result],\n          length = hasOwnProperty.call(realNames, result) ? array.length : 0;\n\n      while (length--) {\n        var data = array[length],\n            otherFunc = data.func;\n        if (otherFunc == null || otherFunc == func) {\n          return data.name;\n        }\n      }\n      return result;\n    }\n\n    /**\n     * Gets the argument placeholder value for `func`.\n     *\n     * @private\n     * @param {Function} func The function to inspect.\n     * @returns {*} Returns the placeholder value.\n     */\n    function getHolder(func) {\n      var object = hasOwnProperty.call(lodash, 'placeholder') ? lodash : func;\n      return object.placeholder;\n    }\n\n    /**\n     * Gets the appropriate \"iteratee\" function. If `_.iteratee` is customized,\n     * this function returns the custom method, otherwise it returns `baseIteratee`.\n     * If arguments are provided, the chosen function is invoked with them and\n     * its result is returned.\n     *\n     * @private\n     * @param {*} [value] The value to convert to an iteratee.\n     * @param {number} [arity] The arity of the created iteratee.\n     * @returns {Function} Returns the chosen function or its result.\n     */\n    function getIteratee() {\n      var result = lodash.iteratee || iteratee;\n      result = result === iteratee ? baseIteratee : result;\n      return arguments.length ? result(arguments[0], arguments[1]) : result;\n    }\n\n    /**\n     * Gets the data for `map`.\n     *\n     * @private\n     * @param {Object} map The map to query.\n     * @param {string} key The reference key.\n     * @returns {*} Returns the map data.\n     */\n    function getMapData(map, key) {\n      var data = map.__data__;\n      return isKeyable(key)\n        ? data[typeof key == 'string' ? 'string' : 'hash']\n        : data.map;\n    }\n\n    /**\n     * Gets the property names, values, and compare flags of `object`.\n     *\n     * @private\n     * @param {Object} object The object to query.\n     * @returns {Array} Returns the match data of `object`.\n     */\n    function getMatchData(object) {\n      var result = keys(object),\n          length = result.length;\n\n      while (length--) {\n        var key = result[length],\n            value = object[key];\n\n        result[length] = [key, value, isStrictComparable(value)];\n      }\n      return result;\n    }\n\n    /**\n     * Gets the native function at `key` of `object`.\n     *\n     * @private\n     * @param {Object} object The object to query.\n     * @param {string} key The key of the method to get.\n     * @returns {*} Returns the function if it's native, else `undefined`.\n     */\n    function getNative(object, key) {\n      var value = getValue(object, key);\n      return baseIsNative(value) ? value : undefined;\n    }\n\n    /**\n     * A specialized version of `baseGetTag` which ignores `Symbol.toStringTag` values.\n     *\n     * @private\n     * @param {*} value The value to query.\n     * @returns {string} Returns the raw `toStringTag`.\n     */\n    function getRawTag(value) {\n      var isOwn = hasOwnProperty.call(value, symToStringTag),\n          tag = value[symToStringTag];\n\n      try {\n        value[symToStringTag] = undefined;\n        var unmasked = true;\n      } catch (e) {}\n\n      var result = nativeObjectToString.call(value);\n      if (unmasked) {\n        if (isOwn) {\n          value[symToStringTag] = tag;\n        } else {\n          delete value[symToStringTag];\n        }\n      }\n      return result;\n    }\n\n    /**\n     * Creates an array of the own enumerable symbols of `object`.\n     *\n     * @private\n     * @param {Object} object The object to query.\n     * @returns {Array} Returns the array of symbols.\n     */\n    var getSymbols = !nativeGetSymbols ? stubArray : function(object) {\n      if (object == null) {\n        return [];\n      }\n      object = Object(object);\n      return arrayFilter(nativeGetSymbols(object), function(symbol) {\n        return propertyIsEnumerable.call(object, symbol);\n      });\n    };\n\n    /**\n     * Creates an array of the own and inherited enumerable symbols of `object`.\n     *\n     * @private\n     * @param {Object} object The object to query.\n     * @returns {Array} Returns the array of symbols.\n     */\n    var getSymbolsIn = !nativeGetSymbols ? stubArray : function(object) {\n      var result = [];\n      while (object) {\n        arrayPush(result, getSymbols(object));\n        object = getPrototype(object);\n      }\n      return result;\n    };\n\n    /**\n     * Gets the `toStringTag` of `value`.\n     *\n     * @private\n     * @param {*} value The value to query.\n     * @returns {string} Returns the `toStringTag`.\n     */\n    var getTag = baseGetTag;\n\n    // Fallback for data views, maps, sets, and weak maps in IE 11 and promises in Node.js < 6.\n    if ((DataView && getTag(new DataView(new ArrayBuffer(1))) != dataViewTag) ||\n        (Map && getTag(new Map) != mapTag) ||\n        (Promise && getTag(Promise.resolve()) != promiseTag) ||\n        (Set && getTag(new Set) != setTag) ||\n        (WeakMap && getTag(new WeakMap) != weakMapTag)) {\n      getTag = function(value) {\n        var result = baseGetTag(value),\n            Ctor = result == objectTag ? value.constructor : undefined,\n            ctorString = Ctor ? toSource(Ctor) : '';\n\n        if (ctorString) {\n          switch (ctorString) {\n            case dataViewCtorString: return dataViewTag;\n            case mapCtorString: return mapTag;\n            case promiseCtorString: return promiseTag;\n            case setCtorString: return setTag;\n            case weakMapCtorString: return weakMapTag;\n          }\n        }\n        return result;\n      };\n    }\n\n    /**\n     * Gets the view, applying any `transforms` to the `start` and `end` positions.\n     *\n     * @private\n     * @param {number} start The start of the view.\n     * @param {number} end The end of the view.\n     * @param {Array} transforms The transformations to apply to the view.\n     * @returns {Object} Returns an object containing the `start` and `end`\n     *  positions of the view.\n     */\n    function getView(start, end, transforms) {\n      var index = -1,\n          length = transforms.length;\n\n      while (++index < length) {\n        var data = transforms[index],\n            size = data.size;\n\n        switch (data.type) {\n          case 'drop':      start += size; break;\n          case 'dropRight': end -= size; break;\n          case 'take':      end = nativeMin(end, start + size); break;\n          case 'takeRight': start = nativeMax(start, end - size); break;\n        }\n      }\n      return { 'start': start, 'end': end };\n    }\n\n    /**\n     * Extracts wrapper details from the `source` body comment.\n     *\n     * @private\n     * @param {string} source The source to inspect.\n     * @returns {Array} Returns the wrapper details.\n     */\n    function getWrapDetails(source) {\n      var match = source.match(reWrapDetails);\n      return match ? match[1].split(reSplitDetails) : [];\n    }\n\n    /**\n     * Checks if `path` exists on `object`.\n     *\n     * @private\n     * @param {Object} object The object to query.\n     * @param {Array|string} path The path to check.\n     * @param {Function} hasFunc The function to check properties.\n     * @returns {boolean} Returns `true` if `path` exists, else `false`.\n     */\n    function hasPath(object, path, hasFunc) {\n      path = castPath(path, object);\n\n      var index = -1,\n          length = path.length,\n          result = false;\n\n      while (++index < length) {\n        var key = toKey(path[index]);\n        if (!(result = object != null && hasFunc(object, key))) {\n          break;\n        }\n        object = object[key];\n      }\n      if (result || ++index != length) {\n        return result;\n      }\n      length = object == null ? 0 : object.length;\n      return !!length && isLength(length) && isIndex(key, length) &&\n        (isArray(object) || isArguments(object));\n    }\n\n    /**\n     * Initializes an array clone.\n     *\n     * @private\n     * @param {Array} array The array to clone.\n     * @returns {Array} Returns the initialized clone.\n     */\n    function initCloneArray(array) {\n      var length = array.length,\n          result = new array.constructor(length);\n\n      // Add properties assigned by `RegExp#exec`.\n      if (length && typeof array[0] == 'string' && hasOwnProperty.call(array, 'index')) {\n        result.index = array.index;\n        result.input = array.input;\n      }\n      return result;\n    }\n\n    /**\n     * Initializes an object clone.\n     *\n     * @private\n     * @param {Object} object The object to clone.\n     * @returns {Object} Returns the initialized clone.\n     */\n    function initCloneObject(object) {\n      return (typeof object.constructor == 'function' && !isPrototype(object))\n        ? baseCreate(getPrototype(object))\n        : {};\n    }\n\n    /**\n     * Initializes an object clone based on its `toStringTag`.\n     *\n     * **Note:** This function only supports cloning values with tags of\n     * `Boolean`, `Date`, `Error`, `Map`, `Number`, `RegExp`, `Set`, or `String`.\n     *\n     * @private\n     * @param {Object} object The object to clone.\n     * @param {string} tag The `toStringTag` of the object to clone.\n     * @param {boolean} [isDeep] Specify a deep clone.\n     * @returns {Object} Returns the initialized clone.\n     */\n    function initCloneByTag(object, tag, isDeep) {\n      var Ctor = object.constructor;\n      switch (tag) {\n        case arrayBufferTag:\n          return cloneArrayBuffer(object);\n\n        case boolTag:\n        case dateTag:\n          return new Ctor(+object);\n\n        case dataViewTag:\n          return cloneDataView(object, isDeep);\n\n        case float32Tag: case float64Tag:\n        case int8Tag: case int16Tag: case int32Tag:\n        case uint8Tag: case uint8ClampedTag: case uint16Tag: case uint32Tag:\n          return cloneTypedArray(object, isDeep);\n\n        case mapTag:\n          return new Ctor;\n\n        case numberTag:\n        case stringTag:\n          return new Ctor(object);\n\n        case regexpTag:\n          return cloneRegExp(object);\n\n        case setTag:\n          return new Ctor;\n\n        case symbolTag:\n          return cloneSymbol(object);\n      }\n    }\n\n    /**\n     * Inserts wrapper `details` in a comment at the top of the `source` body.\n     *\n     * @private\n     * @param {string} source The source to modify.\n     * @returns {Array} details The details to insert.\n     * @returns {string} Returns the modified source.\n     */\n    function insertWrapDetails(source, details) {\n      var length = details.length;\n      if (!length) {\n        return source;\n      }\n      var lastIndex = length - 1;\n      details[lastIndex] = (length > 1 ? '& ' : '') + details[lastIndex];\n      details = details.join(length > 2 ? ', ' : ' ');\n      return source.replace(reWrapComment, '{\\n/* [wrapped with ' + details + '] */\\n');\n    }\n\n    /**\n     * Checks if `value` is a flattenable `arguments` object or array.\n     *\n     * @private\n     * @param {*} value The value to check.\n     * @returns {boolean} Returns `true` if `value` is flattenable, else `false`.\n     */\n    function isFlattenable(value) {\n      return isArray(value) || isArguments(value) ||\n        !!(spreadableSymbol && value && value[spreadableSymbol]);\n    }\n\n    /**\n     * Checks if `value` is a valid array-like index.\n     *\n     * @private\n     * @param {*} value The value to check.\n     * @param {number} [length=MAX_SAFE_INTEGER] The upper bounds of a valid index.\n     * @returns {boolean} Returns `true` if `value` is a valid index, else `false`.\n     */\n    function isIndex(value, length) {\n      var type = typeof value;\n      length = length == null ? MAX_SAFE_INTEGER : length;\n\n      return !!length &&\n        (type == 'number' ||\n          (type != 'symbol' && reIsUint.test(value))) &&\n            (value > -1 && value % 1 == 0 && value < length);\n    }\n\n    /**\n     * Checks if the given arguments are from an iteratee call.\n     *\n     * @private\n     * @param {*} value The potential iteratee value argument.\n     * @param {*} index The potential iteratee index or key argument.\n     * @param {*} object The potential iteratee object argument.\n     * @returns {boolean} Returns `true` if the arguments are from an iteratee call,\n     *  else `false`.\n     */\n    function isIterateeCall(value, index, object) {\n      if (!isObject(object)) {\n        return false;\n      }\n      var type = typeof index;\n      if (type == 'number'\n            ? (isArrayLike(object) && isIndex(index, object.length))\n            : (type == 'string' && index in object)\n          ) {\n        return eq(object[index], value);\n      }\n      return false;\n    }\n\n    /**\n     * Checks if `value` is a property name and not a property path.\n     *\n     * @private\n     * @param {*} value The value to check.\n     * @param {Object} [object] The object to query keys on.\n     * @returns {boolean} Returns `true` if `value` is a property name, else `false`.\n     */\n    function isKey(value, object) {\n      if (isArray(value)) {\n        return false;\n      }\n      var type = typeof value;\n      if (type == 'number' || type == 'symbol' || type == 'boolean' ||\n          value == null || isSymbol(value)) {\n        return true;\n      }\n      return reIsPlainProp.test(value) || !reIsDeepProp.test(value) ||\n        (object != null && value in Object(object));\n    }\n\n    /**\n     * Checks if `value` is suitable for use as unique object key.\n     *\n     * @private\n     * @param {*} value The value to check.\n     * @returns {boolean} Returns `true` if `value` is suitable, else `false`.\n     */\n    function isKeyable(value) {\n      var type = typeof value;\n      return (type == 'string' || type == 'number' || type == 'symbol' || type == 'boolean')\n        ? (value !== '__proto__')\n        : (value === null);\n    }\n\n    /**\n     * Checks if `func` has a lazy counterpart.\n     *\n     * @private\n     * @param {Function} func The function to check.\n     * @returns {boolean} Returns `true` if `func` has a lazy counterpart,\n     *  else `false`.\n     */\n    function isLaziable(func) {\n      var funcName = getFuncName(func),\n          other = lodash[funcName];\n\n      if (typeof other != 'function' || !(funcName in LazyWrapper.prototype)) {\n        return false;\n      }\n      if (func === other) {\n        return true;\n      }\n      var data = getData(other);\n      return !!data && func === data[0];\n    }\n\n    /**\n     * Checks if `func` has its source masked.\n     *\n     * @private\n     * @param {Function} func The function to check.\n     * @returns {boolean} Returns `true` if `func` is masked, else `false`.\n     */\n    function isMasked(func) {\n      return !!maskSrcKey && (maskSrcKey in func);\n    }\n\n    /**\n     * Checks if `func` is capable of being masked.\n     *\n     * @private\n     * @param {*} value The value to check.\n     * @returns {boolean} Returns `true` if `func` is maskable, else `false`.\n     */\n    var isMaskable = coreJsData ? isFunction : stubFalse;\n\n    /**\n     * Checks if `value` is likely a prototype object.\n     *\n     * @private\n     * @param {*} value The value to check.\n     * @returns {boolean} Returns `true` if `value` is a prototype, else `false`.\n     */\n    function isPrototype(value) {\n      var Ctor = value && value.constructor,\n          proto = (typeof Ctor == 'function' && Ctor.prototype) || objectProto;\n\n      return value === proto;\n    }\n\n    /**\n     * Checks if `value` is suitable for strict equality comparisons, i.e. `===`.\n     *\n     * @private\n     * @param {*} value The value to check.\n     * @returns {boolean} Returns `true` if `value` if suitable for strict\n     *  equality comparisons, else `false`.\n     */\n    function isStrictComparable(value) {\n      return value === value && !isObject(value);\n    }\n\n    /**\n     * A specialized version of `matchesProperty` for source values suitable\n     * for strict equality comparisons, i.e. `===`.\n     *\n     * @private\n     * @param {string} key The key of the property to get.\n     * @param {*} srcValue The value to match.\n     * @returns {Function} Returns the new spec function.\n     */\n    function matchesStrictComparable(key, srcValue) {\n      return function(object) {\n        if (object == null) {\n          return false;\n        }\n        return object[key] === srcValue &&\n          (srcValue !== undefined || (key in Object(object)));\n      };\n    }\n\n    /**\n     * A specialized version of `_.memoize` which clears the memoized function's\n     * cache when it exceeds `MAX_MEMOIZE_SIZE`.\n     *\n     * @private\n     * @param {Function} func The function to have its output memoized.\n     * @returns {Function} Returns the new memoized function.\n     */\n    function memoizeCapped(func) {\n      var result = memoize(func, function(key) {\n        if (cache.size === MAX_MEMOIZE_SIZE) {\n          cache.clear();\n        }\n        return key;\n      });\n\n      var cache = result.cache;\n      return result;\n    }\n\n    /**\n     * Merges the function metadata of `source` into `data`.\n     *\n     * Merging metadata reduces the number of wrappers used to invoke a function.\n     * This is possible because methods like `_.bind`, `_.curry`, and `_.partial`\n     * may be applied regardless of execution order. Methods like `_.ary` and\n     * `_.rearg` modify function arguments, making the order in which they are\n     * executed important, preventing the merging of metadata. However, we make\n     * an exception for a safe combined case where curried functions have `_.ary`\n     * and or `_.rearg` applied.\n     *\n     * @private\n     * @param {Array} data The destination metadata.\n     * @param {Array} source The source metadata.\n     * @returns {Array} Returns `data`.\n     */\n    function mergeData(data, source) {\n      var bitmask = data[1],\n          srcBitmask = source[1],\n          newBitmask = bitmask | srcBitmask,\n          isCommon = newBitmask < (WRAP_BIND_FLAG | WRAP_BIND_KEY_FLAG | WRAP_ARY_FLAG);\n\n      var isCombo =\n        ((srcBitmask == WRAP_ARY_FLAG) && (bitmask == WRAP_CURRY_FLAG)) ||\n        ((srcBitmask == WRAP_ARY_FLAG) && (bitmask == WRAP_REARG_FLAG) && (data[7].length <= source[8])) ||\n        ((srcBitmask == (WRAP_ARY_FLAG | WRAP_REARG_FLAG)) && (source[7].length <= source[8]) && (bitmask == WRAP_CURRY_FLAG));\n\n      // Exit early if metadata can't be merged.\n      if (!(isCommon || isCombo)) {\n        return data;\n      }\n      // Use source `thisArg` if available.\n      if (srcBitmask & WRAP_BIND_FLAG) {\n        data[2] = source[2];\n        // Set when currying a bound function.\n        newBitmask |= bitmask & WRAP_BIND_FLAG ? 0 : WRAP_CURRY_BOUND_FLAG;\n      }\n      // Compose partial arguments.\n      var value = source[3];\n      if (value) {\n        var partials = data[3];\n        data[3] = partials ? composeArgs(partials, value, source[4]) : value;\n        data[4] = partials ? replaceHolders(data[3], PLACEHOLDER) : source[4];\n      }\n      // Compose partial right arguments.\n      value = source[5];\n      if (value) {\n        partials = data[5];\n        data[5] = partials ? composeArgsRight(partials, value, source[6]) : value;\n        data[6] = partials ? replaceHolders(data[5], PLACEHOLDER) : source[6];\n      }\n      // Use source `argPos` if available.\n      value = source[7];\n      if (value) {\n        data[7] = value;\n      }\n      // Use source `ary` if it's smaller.\n      if (srcBitmask & WRAP_ARY_FLAG) {\n        data[8] = data[8] == null ? source[8] : nativeMin(data[8], source[8]);\n      }\n      // Use source `arity` if one is not provided.\n      if (data[9] == null) {\n        data[9] = source[9];\n      }\n      // Use source `func` and merge bitmasks.\n      data[0] = source[0];\n      data[1] = newBitmask;\n\n      return data;\n    }\n\n    /**\n     * This function is like\n     * [`Object.keys`](http://ecma-international.org/ecma-262/7.0/#sec-object.keys)\n     * except that it includes inherited enumerable properties.\n     *\n     * @private\n     * @param {Object} object The object to query.\n     * @returns {Array} Returns the array of property names.\n     */\n    function nativeKeysIn(object) {\n      var result = [];\n      if (object != null) {\n        for (var key in Object(object)) {\n          result.push(key);\n        }\n      }\n      return result;\n    }\n\n    /**\n     * Converts `value` to a string using `Object.prototype.toString`.\n     *\n     * @private\n     * @param {*} value The value to convert.\n     * @returns {string} Returns the converted string.\n     */\n    function objectToString(value) {\n      return nativeObjectToString.call(value);\n    }\n\n    /**\n     * A specialized version of `baseRest` which transforms the rest array.\n     *\n     * @private\n     * @param {Function} func The function to apply a rest parameter to.\n     * @param {number} [start=func.length-1] The start position of the rest parameter.\n     * @param {Function} transform The rest array transform.\n     * @returns {Function} Returns the new function.\n     */\n    function overRest(func, start, transform) {\n      start = nativeMax(start === undefined ? (func.length - 1) : start, 0);\n      return function() {\n        var args = arguments,\n            index = -1,\n            length = nativeMax(args.length - start, 0),\n            array = Array(length);\n\n        while (++index < length) {\n          array[index] = args[start + index];\n        }\n        index = -1;\n        var otherArgs = Array(start + 1);\n        while (++index < start) {\n          otherArgs[index] = args[index];\n        }\n        otherArgs[start] = transform(array);\n        return apply(func, this, otherArgs);\n      };\n    }\n\n    /**\n     * Gets the parent value at `path` of `object`.\n     *\n     * @private\n     * @param {Object} object The object to query.\n     * @param {Array} path The path to get the parent value of.\n     * @returns {*} Returns the parent value.\n     */\n    function parent(object, path) {\n      return path.length < 2 ? object : baseGet(object, baseSlice(path, 0, -1));\n    }\n\n    /**\n     * Reorder `array` according to the specified indexes where the element at\n     * the first index is assigned as the first element, the element at\n     * the second index is assigned as the second element, and so on.\n     *\n     * @private\n     * @param {Array} array The array to reorder.\n     * @param {Array} indexes The arranged array indexes.\n     * @returns {Array} Returns `array`.\n     */\n    function reorder(array, indexes) {\n      var arrLength = array.length,\n          length = nativeMin(indexes.length, arrLength),\n          oldArray = copyArray(array);\n\n      while (length--) {\n        var index = indexes[length];\n        array[length] = isIndex(index, arrLength) ? oldArray[index] : undefined;\n      }\n      return array;\n    }\n\n    /**\n     * Gets the value at `key`, unless `key` is \"__proto__\" or \"constructor\".\n     *\n     * @private\n     * @param {Object} object The object to query.\n     * @param {string} key The key of the property to get.\n     * @returns {*} Returns the property value.\n     */\n    function safeGet(object, key) {\n      if (key === 'constructor' && typeof object[key] === 'function') {\n        return;\n      }\n\n      if (key == '__proto__') {\n        return;\n      }\n\n      return object[key];\n    }\n\n    /**\n     * Sets metadata for `func`.\n     *\n     * **Note:** If this function becomes hot, i.e. is invoked a lot in a short\n     * period of time, it will trip its breaker and transition to an identity\n     * function to avoid garbage collection pauses in V8. See\n     * [V8 issue 2070](https://bugs.chromium.org/p/v8/issues/detail?id=2070)\n     * for more details.\n     *\n     * @private\n     * @param {Function} func The function to associate metadata with.\n     * @param {*} data The metadata.\n     * @returns {Function} Returns `func`.\n     */\n    var setData = shortOut(baseSetData);\n\n    /**\n     * A simple wrapper around the global [`setTimeout`](https://mdn.io/setTimeout).\n     *\n     * @private\n     * @param {Function} func The function to delay.\n     * @param {number} wait The number of milliseconds to delay invocation.\n     * @returns {number|Object} Returns the timer id or timeout object.\n     */\n    var setTimeout = ctxSetTimeout || function(func, wait) {\n      return root.setTimeout(func, wait);\n    };\n\n    /**\n     * Sets the `toString` method of `func` to return `string`.\n     *\n     * @private\n     * @param {Function} func The function to modify.\n     * @param {Function} string The `toString` result.\n     * @returns {Function} Returns `func`.\n     */\n    var setToString = shortOut(baseSetToString);\n\n    /**\n     * Sets the `toString` method of `wrapper` to mimic the source of `reference`\n     * with wrapper details in a comment at the top of the source body.\n     *\n     * @private\n     * @param {Function} wrapper The function to modify.\n     * @param {Function} reference The reference function.\n     * @param {number} bitmask The bitmask flags. See `createWrap` for more details.\n     * @returns {Function} Returns `wrapper`.\n     */\n    function setWrapToString(wrapper, reference, bitmask) {\n      var source = (reference + '');\n      return setToString(wrapper, insertWrapDetails(source, updateWrapDetails(getWrapDetails(source), bitmask)));\n    }\n\n    /**\n     * Creates a function that'll short out and invoke `identity` instead\n     * of `func` when it's called `HOT_COUNT` or more times in `HOT_SPAN`\n     * milliseconds.\n     *\n     * @private\n     * @param {Function} func The function to restrict.\n     * @returns {Function} Returns the new shortable function.\n     */\n    function shortOut(func) {\n      var count = 0,\n          lastCalled = 0;\n\n      return function() {\n        var stamp = nativeNow(),\n            remaining = HOT_SPAN - (stamp - lastCalled);\n\n        lastCalled = stamp;\n        if (remaining > 0) {\n          if (++count >= HOT_COUNT) {\n            return arguments[0];\n          }\n        } else {\n          count = 0;\n        }\n        return func.apply(undefined, arguments);\n      };\n    }\n\n    /**\n     * A specialized version of `_.shuffle` which mutates and sets the size of `array`.\n     *\n     * @private\n     * @param {Array} array The array to shuffle.\n     * @param {number} [size=array.length] The size of `array`.\n     * @returns {Array} Returns `array`.\n     */\n    function shuffleSelf(array, size) {\n      var index = -1,\n          length = array.length,\n          lastIndex = length - 1;\n\n      size = size === undefined ? length : size;\n      while (++index < size) {\n        var rand = baseRandom(index, lastIndex),\n            value = array[rand];\n\n        array[rand] = array[index];\n        array[index] = value;\n      }\n      array.length = size;\n      return array;\n    }\n\n    /**\n     * Converts `string` to a property path array.\n     *\n     * @private\n     * @param {string} string The string to convert.\n     * @returns {Array} Returns the property path array.\n     */\n    var stringToPath = memoizeCapped(function(string) {\n      var result = [];\n      if (string.charCodeAt(0) === 46 /* . */) {\n        result.push('');\n      }\n      string.replace(rePropName, function(match, number, quote, subString) {\n        result.push(quote ? subString.replace(reEscapeChar, '$1') : (number || match));\n      });\n      return result;\n    });\n\n    /**\n     * Converts `value` to a string key if it's not a string or symbol.\n     *\n     * @private\n     * @param {*} value The value to inspect.\n     * @returns {string|symbol} Returns the key.\n     */\n    function toKey(value) {\n      if (typeof value == 'string' || isSymbol(value)) {\n        return value;\n      }\n      var result = (value + '');\n      return (result == '0' && (1 / value) == -INFINITY) ? '-0' : result;\n    }\n\n    /**\n     * Converts `func` to its source code.\n     *\n     * @private\n     * @param {Function} func The function to convert.\n     * @returns {string} Returns the source code.\n     */\n    function toSource(func) {\n      if (func != null) {\n        try {\n          return funcToString.call(func);\n        } catch (e) {}\n        try {\n          return (func + '');\n        } catch (e) {}\n      }\n      return '';\n    }\n\n    /**\n     * Updates wrapper `details` based on `bitmask` flags.\n     *\n     * @private\n     * @returns {Array} details The details to modify.\n     * @param {number} bitmask The bitmask flags. See `createWrap` for more details.\n     * @returns {Array} Returns `details`.\n     */\n    function updateWrapDetails(details, bitmask) {\n      arrayEach(wrapFlags, function(pair) {\n        var value = '_.' + pair[0];\n        if ((bitmask & pair[1]) && !arrayIncludes(details, value)) {\n          details.push(value);\n        }\n      });\n      return details.sort();\n    }\n\n    /**\n     * Creates a clone of `wrapper`.\n     *\n     * @private\n     * @param {Object} wrapper The wrapper to clone.\n     * @returns {Object} Returns the cloned wrapper.\n     */\n    function wrapperClone(wrapper) {\n      if (wrapper instanceof LazyWrapper) {\n        return wrapper.clone();\n      }\n      var result = new LodashWrapper(wrapper.__wrapped__, wrapper.__chain__);\n      result.__actions__ = copyArray(wrapper.__actions__);\n      result.__index__  = wrapper.__index__;\n      result.__values__ = wrapper.__values__;\n      return result;\n    }\n\n    /*------------------------------------------------------------------------*/\n\n    /**\n     * Creates an array of elements split into groups the length of `size`.\n     * If `array` can't be split evenly, the final chunk will be the remaining\n     * elements.\n     *\n     * @static\n     * @memberOf _\n     * @since 3.0.0\n     * @category Array\n     * @param {Array} array The array to process.\n     * @param {number} [size=1] The length of each chunk\n     * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.\n     * @returns {Array} Returns the new array of chunks.\n     * @example\n     *\n     * _.chunk(['a', 'b', 'c', 'd'], 2);\n     * // => [['a', 'b'], ['c', 'd']]\n     *\n     * _.chunk(['a', 'b', 'c', 'd'], 3);\n     * // => [['a', 'b', 'c'], ['d']]\n     */\n    function chunk(array, size, guard) {\n      if ((guard ? isIterateeCall(array, size, guard) : size === undefined)) {\n        size = 1;\n      } else {\n        size = nativeMax(toInteger(size), 0);\n      }\n      var length = array == null ? 0 : array.length;\n      if (!length || size < 1) {\n        return [];\n      }\n      var index = 0,\n          resIndex = 0,\n          result = Array(nativeCeil(length / size));\n\n      while (index < length) {\n        result[resIndex++] = baseSlice(array, index, (index += size));\n      }\n      return result;\n    }\n\n    /**\n     * Creates an array with all falsey values removed. The values `false`, `null`,\n     * `0`, `\"\"`, `undefined`, and `NaN` are falsey.\n     *\n     * @static\n     * @memberOf _\n     * @since 0.1.0\n     * @category Array\n     * @param {Array} array The array to compact.\n     * @returns {Array} Returns the new array of filtered values.\n     * @example\n     *\n     * _.compact([0, 1, false, 2, '', 3]);\n     * // => [1, 2, 3]\n     */\n    function compact(array) {\n      var index = -1,\n          length = array == null ? 0 : array.length,\n          resIndex = 0,\n          result = [];\n\n      while (++index < length) {\n        var value = array[index];\n        if (value) {\n          result[resIndex++] = value;\n        }\n      }\n      return result;\n    }\n\n    /**\n     * Creates a new array concatenating `array` with any additional arrays\n     * and/or values.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Array\n     * @param {Array} array The array to concatenate.\n     * @param {...*} [values] The values to concatenate.\n     * @returns {Array} Returns the new concatenated array.\n     * @example\n     *\n     * var array = [1];\n     * var other = _.concat(array, 2, [3], [[4]]);\n     *\n     * console.log(other);\n     * // => [1, 2, 3, [4]]\n     *\n     * console.log(array);\n     * // => [1]\n     */\n    function concat() {\n      var length = arguments.length;\n      if (!length) {\n        return [];\n      }\n      var args = Array(length - 1),\n          array = arguments[0],\n          index = length;\n\n      while (index--) {\n        args[index - 1] = arguments[index];\n      }\n      return arrayPush(isArray(array) ? copyArray(array) : [array], baseFlatten(args, 1));\n    }\n\n    /**\n     * Creates an array of `array` values not included in the other given arrays\n     * using [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)\n     * for equality comparisons. The order and references of result values are\n     * determined by the first array.\n     *\n     * **Note:** Unlike `_.pullAll`, this method returns a new array.\n     *\n     * @static\n     * @memberOf _\n     * @since 0.1.0\n     * @category Array\n     * @param {Array} array The array to inspect.\n     * @param {...Array} [values] The values to exclude.\n     * @returns {Array} Returns the new array of filtered values.\n     * @see _.without, _.xor\n     * @example\n     *\n     * _.difference([2, 1], [2, 3]);\n     * // => [1]\n     */\n    var difference = baseRest(function(array, values) {\n      return isArrayLikeObject(array)\n        ? baseDifference(array, baseFlatten(values, 1, isArrayLikeObject, true))\n        : [];\n    });\n\n    /**\n     * This method is like `_.difference` except that it accepts `iteratee` which\n     * is invoked for each element of `array` and `values` to generate the criterion\n     * by which they're compared. The order and references of result values are\n     * determined by the first array. The iteratee is invoked with one argument:\n     * (value).\n     *\n     * **Note:** Unlike `_.pullAllBy`, this method returns a new array.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Array\n     * @param {Array} array The array to inspect.\n     * @param {...Array} [values] The values to exclude.\n     * @param {Function} [iteratee=_.identity] The iteratee invoked per element.\n     * @returns {Array} Returns the new array of filtered values.\n     * @example\n     *\n     * _.differenceBy([2.1, 1.2], [2.3, 3.4], Math.floor);\n     * // => [1.2]\n     *\n     * // The `_.property` iteratee shorthand.\n     * _.differenceBy([{ 'x': 2 }, { 'x': 1 }], [{ 'x': 1 }], 'x');\n     * // => [{ 'x': 2 }]\n     */\n    var differenceBy = baseRest(function(array, values) {\n      var iteratee = last(values);\n      if (isArrayLikeObject(iteratee)) {\n        iteratee = undefined;\n      }\n      return isArrayLikeObject(array)\n        ? baseDifference(array, baseFlatten(values, 1, isArrayLikeObject, true), getIteratee(iteratee, 2))\n        : [];\n    });\n\n    /**\n     * This method is like `_.difference` except that it accepts `comparator`\n     * which is invoked to compare elements of `array` to `values`. The order and\n     * references of result values are determined by the first array. The comparator\n     * is invoked with two arguments: (arrVal, othVal).\n     *\n     * **Note:** Unlike `_.pullAllWith`, this method returns a new array.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Array\n     * @param {Array} array The array to inspect.\n     * @param {...Array} [values] The values to exclude.\n     * @param {Function} [comparator] The comparator invoked per element.\n     * @returns {Array} Returns the new array of filtered values.\n     * @example\n     *\n     * var objects = [{ 'x': 1, 'y': 2 }, { 'x': 2, 'y': 1 }];\n     *\n     * _.differenceWith(objects, [{ 'x': 1, 'y': 2 }], _.isEqual);\n     * // => [{ 'x': 2, 'y': 1 }]\n     */\n    var differenceWith = baseRest(function(array, values) {\n      var comparator = last(values);\n      if (isArrayLikeObject(comparator)) {\n        comparator = undefined;\n      }\n      return isArrayLikeObject(array)\n        ? baseDifference(array, baseFlatten(values, 1, isArrayLikeObject, true), undefined, comparator)\n        : [];\n    });\n\n    /**\n     * Creates a slice of `array` with `n` elements dropped from the beginning.\n     *\n     * @static\n     * @memberOf _\n     * @since 0.5.0\n     * @category Array\n     * @param {Array} array The array to query.\n     * @param {number} [n=1] The number of elements to drop.\n     * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.\n     * @returns {Array} Returns the slice of `array`.\n     * @example\n     *\n     * _.drop([1, 2, 3]);\n     * // => [2, 3]\n     *\n     * _.drop([1, 2, 3], 2);\n     * // => [3]\n     *\n     * _.drop([1, 2, 3], 5);\n     * // => []\n     *\n     * _.drop([1, 2, 3], 0);\n     * // => [1, 2, 3]\n     */\n    function drop(array, n, guard) {\n      var length = array == null ? 0 : array.length;\n      if (!length) {\n        return [];\n      }\n      n = (guard || n === undefined) ? 1 : toInteger(n);\n      return baseSlice(array, n < 0 ? 0 : n, length);\n    }\n\n    /**\n     * Creates a slice of `array` with `n` elements dropped from the end.\n     *\n     * @static\n     * @memberOf _\n     * @since 3.0.0\n     * @category Array\n     * @param {Array} array The array to query.\n     * @param {number} [n=1] The number of elements to drop.\n     * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.\n     * @returns {Array} Returns the slice of `array`.\n     * @example\n     *\n     * _.dropRight([1, 2, 3]);\n     * // => [1, 2]\n     *\n     * _.dropRight([1, 2, 3], 2);\n     * // => [1]\n     *\n     * _.dropRight([1, 2, 3], 5);\n     * // => []\n     *\n     * _.dropRight([1, 2, 3], 0);\n     * // => [1, 2, 3]\n     */\n    function dropRight(array, n, guard) {\n      var length = array == null ? 0 : array.length;\n      if (!length) {\n        return [];\n      }\n      n = (guard || n === undefined) ? 1 : toInteger(n);\n      n = length - n;\n      return baseSlice(array, 0, n < 0 ? 0 : n);\n    }\n\n    /**\n     * Creates a slice of `array` excluding elements dropped from the end.\n     * Elements are dropped until `predicate` returns falsey. The predicate is\n     * invoked with three arguments: (value, index, array).\n     *\n     * @static\n     * @memberOf _\n     * @since 3.0.0\n     * @category Array\n     * @param {Array} array The array to query.\n     * @param {Function} [predicate=_.identity] The function invoked per iteration.\n     * @returns {Array} Returns the slice of `array`.\n     * @example\n     *\n     * var users = [\n     *   { 'user': 'barney',  'active': true },\n     *   { 'user': 'fred',    'active': false },\n     *   { 'user': 'pebbles', 'active': false }\n     * ];\n     *\n     * _.dropRightWhile(users, function(o) { return !o.active; });\n     * // => objects for ['barney']\n     *\n     * // The `_.matches` iteratee shorthand.\n     * _.dropRightWhile(users, { 'user': 'pebbles', 'active': false });\n     * // => objects for ['barney', 'fred']\n     *\n     * // The `_.matchesProperty` iteratee shorthand.\n     * _.dropRightWhile(users, ['active', false]);\n     * // => objects for ['barney']\n     *\n     * // The `_.property` iteratee shorthand.\n     * _.dropRightWhile(users, 'active');\n     * // => objects for ['barney', 'fred', 'pebbles']\n     */\n    function dropRightWhile(array, predicate) {\n      return (array && array.length)\n        ? baseWhile(array, getIteratee(predicate, 3), true, true)\n        : [];\n    }\n\n    /**\n     * Creates a slice of `array` excluding elements dropped from the beginning.\n     * Elements are dropped until `predicate` returns falsey. The predicate is\n     * invoked with three arguments: (value, index, array).\n     *\n     * @static\n     * @memberOf _\n     * @since 3.0.0\n     * @category Array\n     * @param {Array} array The array to query.\n     * @param {Function} [predicate=_.identity] The function invoked per iteration.\n     * @returns {Array} Returns the slice of `array`.\n     * @example\n     *\n     * var users = [\n     *   { 'user': 'barney',  'active': false },\n     *   { 'user': 'fred',    'active': false },\n     *   { 'user': 'pebbles', 'active': true }\n     * ];\n     *\n     * _.dropWhile(users, function(o) { return !o.active; });\n     * // => objects for ['pebbles']\n     *\n     * // The `_.matches` iteratee shorthand.\n     * _.dropWhile(users, { 'user': 'barney', 'active': false });\n     * // => objects for ['fred', 'pebbles']\n     *\n     * // The `_.matchesProperty` iteratee shorthand.\n     * _.dropWhile(users, ['active', false]);\n     * // => objects for ['pebbles']\n     *\n     * // The `_.property` iteratee shorthand.\n     * _.dropWhile(users, 'active');\n     * // => objects for ['barney', 'fred', 'pebbles']\n     */\n    function dropWhile(array, predicate) {\n      return (array && array.length)\n        ? baseWhile(array, getIteratee(predicate, 3), true)\n        : [];\n    }\n\n    /**\n     * Fills elements of `array` with `value` from `start` up to, but not\n     * including, `end`.\n     *\n     * **Note:** This method mutates `array`.\n     *\n     * @static\n     * @memberOf _\n     * @since 3.2.0\n     * @category Array\n     * @param {Array} array The array to fill.\n     * @param {*} value The value to fill `array` with.\n     * @param {number} [start=0] The start position.\n     * @param {number} [end=array.length] The end position.\n     * @returns {Array} Returns `array`.\n     * @example\n     *\n     * var array = [1, 2, 3];\n     *\n     * _.fill(array, 'a');\n     * console.log(array);\n     * // => ['a', 'a', 'a']\n     *\n     * _.fill(Array(3), 2);\n     * // => [2, 2, 2]\n     *\n     * _.fill([4, 6, 8, 10], '*', 1, 3);\n     * // => [4, '*', '*', 10]\n     */\n    function fill(array, value, start, end) {\n      var length = array == null ? 0 : array.length;\n      if (!length) {\n        return [];\n      }\n      if (start && typeof start != 'number' && isIterateeCall(array, value, start)) {\n        start = 0;\n        end = length;\n      }\n      return baseFill(array, value, start, end);\n    }\n\n    /**\n     * This method is like `_.find` except that it returns the index of the first\n     * element `predicate` returns truthy for instead of the element itself.\n     *\n     * @static\n     * @memberOf _\n     * @since 1.1.0\n     * @category Array\n     * @param {Array} array The array to inspect.\n     * @param {Function} [predicate=_.identity] The function invoked per iteration.\n     * @param {number} [fromIndex=0] The index to search from.\n     * @returns {number} Returns the index of the found element, else `-1`.\n     * @example\n     *\n     * var users = [\n     *   { 'user': 'barney',  'active': false },\n     *   { 'user': 'fred',    'active': false },\n     *   { 'user': 'pebbles', 'active': true }\n     * ];\n     *\n     * _.findIndex(users, function(o) { return o.user == 'barney'; });\n     * // => 0\n     *\n     * // The `_.matches` iteratee shorthand.\n     * _.findIndex(users, { 'user': 'fred', 'active': false });\n     * // => 1\n     *\n     * // The `_.matchesProperty` iteratee shorthand.\n     * _.findIndex(users, ['active', false]);\n     * // => 0\n     *\n     * // The `_.property` iteratee shorthand.\n     * _.findIndex(users, 'active');\n     * // => 2\n     */\n    function findIndex(array, predicate, fromIndex) {\n      var length = array == null ? 0 : array.length;\n      if (!length) {\n        return -1;\n      }\n      var index = fromIndex == null ? 0 : toInteger(fromIndex);\n      if (index < 0) {\n        index = nativeMax(length + index, 0);\n      }\n      return baseFindIndex(array, getIteratee(predicate, 3), index);\n    }\n\n    /**\n     * This method is like `_.findIndex` except that it iterates over elements\n     * of `collection` from right to left.\n     *\n     * @static\n     * @memberOf _\n     * @since 2.0.0\n     * @category Array\n     * @param {Array} array The array to inspect.\n     * @param {Function} [predicate=_.identity] The function invoked per iteration.\n     * @param {number} [fromIndex=array.length-1] The index to search from.\n     * @returns {number} Returns the index of the found element, else `-1`.\n     * @example\n     *\n     * var users = [\n     *   { 'user': 'barney',  'active': true },\n     *   { 'user': 'fred',    'active': false },\n     *   { 'user': 'pebbles', 'active': false }\n     * ];\n     *\n     * _.findLastIndex(users, function(o) { return o.user == 'pebbles'; });\n     * // => 2\n     *\n     * // The `_.matches` iteratee shorthand.\n     * _.findLastIndex(users, { 'user': 'barney', 'active': true });\n     * // => 0\n     *\n     * // The `_.matchesProperty` iteratee shorthand.\n     * _.findLastIndex(users, ['active', false]);\n     * // => 2\n     *\n     * // The `_.property` iteratee shorthand.\n     * _.findLastIndex(users, 'active');\n     * // => 0\n     */\n    function findLastIndex(array, predicate, fromIndex) {\n      var length = array == null ? 0 : array.length;\n      if (!length) {\n        return -1;\n      }\n      var index = length - 1;\n      if (fromIndex !== undefined) {\n        index = toInteger(fromIndex);\n        index = fromIndex < 0\n          ? nativeMax(length + index, 0)\n          : nativeMin(index, length - 1);\n      }\n      return baseFindIndex(array, getIteratee(predicate, 3), index, true);\n    }\n\n    /**\n     * Flattens `array` a single level deep.\n     *\n     * @static\n     * @memberOf _\n     * @since 0.1.0\n     * @category Array\n     * @param {Array} array The array to flatten.\n     * @returns {Array} Returns the new flattened array.\n     * @example\n     *\n     * _.flatten([1, [2, [3, [4]], 5]]);\n     * // => [1, 2, [3, [4]], 5]\n     */\n    function flatten(array) {\n      var length = array == null ? 0 : array.length;\n      return length ? baseFlatten(array, 1) : [];\n    }\n\n    /**\n     * Recursively flattens `array`.\n     *\n     * @static\n     * @memberOf _\n     * @since 3.0.0\n     * @category Array\n     * @param {Array} array The array to flatten.\n     * @returns {Array} Returns the new flattened array.\n     * @example\n     *\n     * _.flattenDeep([1, [2, [3, [4]], 5]]);\n     * // => [1, 2, 3, 4, 5]\n     */\n    function flattenDeep(array) {\n      var length = array == null ? 0 : array.length;\n      return length ? baseFlatten(array, INFINITY) : [];\n    }\n\n    /**\n     * Recursively flatten `array` up to `depth` times.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.4.0\n     * @category Array\n     * @param {Array} array The array to flatten.\n     * @param {number} [depth=1] The maximum recursion depth.\n     * @returns {Array} Returns the new flattened array.\n     * @example\n     *\n     * var array = [1, [2, [3, [4]], 5]];\n     *\n     * _.flattenDepth(array, 1);\n     * // => [1, 2, [3, [4]], 5]\n     *\n     * _.flattenDepth(array, 2);\n     * // => [1, 2, 3, [4], 5]\n     */\n    function flattenDepth(array, depth) {\n      var length = array == null ? 0 : array.length;\n      if (!length) {\n        return [];\n      }\n      depth = depth === undefined ? 1 : toInteger(depth);\n      return baseFlatten(array, depth);\n    }\n\n    /**\n     * The inverse of `_.toPairs`; this method returns an object composed\n     * from key-value `pairs`.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Array\n     * @param {Array} pairs The key-value pairs.\n     * @returns {Object} Returns the new object.\n     * @example\n     *\n     * _.fromPairs([['a', 1], ['b', 2]]);\n     * // => { 'a': 1, 'b': 2 }\n     */\n    function fromPairs(pairs) {\n      var index = -1,\n          length = pairs == null ? 0 : pairs.length,\n          result = {};\n\n      while (++index < length) {\n        var pair = pairs[index];\n        result[pair[0]] = pair[1];\n      }\n      return result;\n    }\n\n    /**\n     * Gets the first element of `array`.\n     *\n     * @static\n     * @memberOf _\n     * @since 0.1.0\n     * @alias first\n     * @category Array\n     * @param {Array} array The array to query.\n     * @returns {*} Returns the first element of `array`.\n     * @example\n     *\n     * _.head([1, 2, 3]);\n     * // => 1\n     *\n     * _.head([]);\n     * // => undefined\n     */\n    function head(array) {\n      return (array && array.length) ? array[0] : undefined;\n    }\n\n    /**\n     * Gets the index at which the first occurrence of `value` is found in `array`\n     * using [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)\n     * for equality comparisons. If `fromIndex` is negative, it's used as the\n     * offset from the end of `array`.\n     *\n     * @static\n     * @memberOf _\n     * @since 0.1.0\n     * @category Array\n     * @param {Array} array The array to inspect.\n     * @param {*} value The value to search for.\n     * @param {number} [fromIndex=0] The index to search from.\n     * @returns {number} Returns the index of the matched value, else `-1`.\n     * @example\n     *\n     * _.indexOf([1, 2, 1, 2], 2);\n     * // => 1\n     *\n     * // Search from the `fromIndex`.\n     * _.indexOf([1, 2, 1, 2], 2, 2);\n     * // => 3\n     */\n    function indexOf(array, value, fromIndex) {\n      var length = array == null ? 0 : array.length;\n      if (!length) {\n        return -1;\n      }\n      var index = fromIndex == null ? 0 : toInteger(fromIndex);\n      if (index < 0) {\n        index = nativeMax(length + index, 0);\n      }\n      return baseIndexOf(array, value, index);\n    }\n\n    /**\n     * Gets all but the last element of `array`.\n     *\n     * @static\n     * @memberOf _\n     * @since 0.1.0\n     * @category Array\n     * @param {Array} array The array to query.\n     * @returns {Array} Returns the slice of `array`.\n     * @example\n     *\n     * _.initial([1, 2, 3]);\n     * // => [1, 2]\n     */\n    function initial(array) {\n      var length = array == null ? 0 : array.length;\n      return length ? baseSlice(array, 0, -1) : [];\n    }\n\n    /**\n     * Creates an array of unique values that are included in all given arrays\n     * using [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)\n     * for equality comparisons. The order and references of result values are\n     * determined by the first array.\n     *\n     * @static\n     * @memberOf _\n     * @since 0.1.0\n     * @category Array\n     * @param {...Array} [arrays] The arrays to inspect.\n     * @returns {Array} Returns the new array of intersecting values.\n     * @example\n     *\n     * _.intersection([2, 1], [2, 3]);\n     * // => [2]\n     */\n    var intersection = baseRest(function(arrays) {\n      var mapped = arrayMap(arrays, castArrayLikeObject);\n      return (mapped.length && mapped[0] === arrays[0])\n        ? baseIntersection(mapped)\n        : [];\n    });\n\n    /**\n     * This method is like `_.intersection` except that it accepts `iteratee`\n     * which is invoked for each element of each `arrays` to generate the criterion\n     * by which they're compared. The order and references of result values are\n     * determined by the first array. The iteratee is invoked with one argument:\n     * (value).\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Array\n     * @param {...Array} [arrays] The arrays to inspect.\n     * @param {Function} [iteratee=_.identity] The iteratee invoked per element.\n     * @returns {Array} Returns the new array of intersecting values.\n     * @example\n     *\n     * _.intersectionBy([2.1, 1.2], [2.3, 3.4], Math.floor);\n     * // => [2.1]\n     *\n     * // The `_.property` iteratee shorthand.\n     * _.intersectionBy([{ 'x': 1 }], [{ 'x': 2 }, { 'x': 1 }], 'x');\n     * // => [{ 'x': 1 }]\n     */\n    var intersectionBy = baseRest(function(arrays) {\n      var iteratee = last(arrays),\n          mapped = arrayMap(arrays, castArrayLikeObject);\n\n      if (iteratee === last(mapped)) {\n        iteratee = undefined;\n      } else {\n        mapped.pop();\n      }\n      return (mapped.length && mapped[0] === arrays[0])\n        ? baseIntersection(mapped, getIteratee(iteratee, 2))\n        : [];\n    });\n\n    /**\n     * This method is like `_.intersection` except that it accepts `comparator`\n     * which is invoked to compare elements of `arrays`. The order and references\n     * of result values are determined by the first array. The comparator is\n     * invoked with two arguments: (arrVal, othVal).\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Array\n     * @param {...Array} [arrays] The arrays to inspect.\n     * @param {Function} [comparator] The comparator invoked per element.\n     * @returns {Array} Returns the new array of intersecting values.\n     * @example\n     *\n     * var objects = [{ 'x': 1, 'y': 2 }, { 'x': 2, 'y': 1 }];\n     * var others = [{ 'x': 1, 'y': 1 }, { 'x': 1, 'y': 2 }];\n     *\n     * _.intersectionWith(objects, others, _.isEqual);\n     * // => [{ 'x': 1, 'y': 2 }]\n     */\n    var intersectionWith = baseRest(function(arrays) {\n      var comparator = last(arrays),\n          mapped = arrayMap(arrays, castArrayLikeObject);\n\n      comparator = typeof comparator == 'function' ? comparator : undefined;\n      if (comparator) {\n        mapped.pop();\n      }\n      return (mapped.length && mapped[0] === arrays[0])\n        ? baseIntersection(mapped, undefined, comparator)\n        : [];\n    });\n\n    /**\n     * Converts all elements in `array` into a string separated by `separator`.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Array\n     * @param {Array} array The array to convert.\n     * @param {string} [separator=','] The element separator.\n     * @returns {string} Returns the joined string.\n     * @example\n     *\n     * _.join(['a', 'b', 'c'], '~');\n     * // => 'a~b~c'\n     */\n    function join(array, separator) {\n      return array == null ? '' : nativeJoin.call(array, separator);\n    }\n\n    /**\n     * Gets the last element of `array`.\n     *\n     * @static\n     * @memberOf _\n     * @since 0.1.0\n     * @category Array\n     * @param {Array} array The array to query.\n     * @returns {*} Returns the last element of `array`.\n     * @example\n     *\n     * _.last([1, 2, 3]);\n     * // => 3\n     */\n    function last(array) {\n      var length = array == null ? 0 : array.length;\n      return length ? array[length - 1] : undefined;\n    }\n\n    /**\n     * This method is like `_.indexOf` except that it iterates over elements of\n     * `array` from right to left.\n     *\n     * @static\n     * @memberOf _\n     * @since 0.1.0\n     * @category Array\n     * @param {Array} array The array to inspect.\n     * @param {*} value The value to search for.\n     * @param {number} [fromIndex=array.length-1] The index to search from.\n     * @returns {number} Returns the index of the matched value, else `-1`.\n     * @example\n     *\n     * _.lastIndexOf([1, 2, 1, 2], 2);\n     * // => 3\n     *\n     * // Search from the `fromIndex`.\n     * _.lastIndexOf([1, 2, 1, 2], 2, 2);\n     * // => 1\n     */\n    function lastIndexOf(array, value, fromIndex) {\n      var length = array == null ? 0 : array.length;\n      if (!length) {\n        return -1;\n      }\n      var index = length;\n      if (fromIndex !== undefined) {\n        index = toInteger(fromIndex);\n        index = index < 0 ? nativeMax(length + index, 0) : nativeMin(index, length - 1);\n      }\n      return value === value\n        ? strictLastIndexOf(array, value, index)\n        : baseFindIndex(array, baseIsNaN, index, true);\n    }\n\n    /**\n     * Gets the element at index `n` of `array`. If `n` is negative, the nth\n     * element from the end is returned.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.11.0\n     * @category Array\n     * @param {Array} array The array to query.\n     * @param {number} [n=0] The index of the element to return.\n     * @returns {*} Returns the nth element of `array`.\n     * @example\n     *\n     * var array = ['a', 'b', 'c', 'd'];\n     *\n     * _.nth(array, 1);\n     * // => 'b'\n     *\n     * _.nth(array, -2);\n     * // => 'c';\n     */\n    function nth(array, n) {\n      return (array && array.length) ? baseNth(array, toInteger(n)) : undefined;\n    }\n\n    /**\n     * Removes all given values from `array` using\n     * [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)\n     * for equality comparisons.\n     *\n     * **Note:** Unlike `_.without`, this method mutates `array`. Use `_.remove`\n     * to remove elements from an array by predicate.\n     *\n     * @static\n     * @memberOf _\n     * @since 2.0.0\n     * @category Array\n     * @param {Array} array The array to modify.\n     * @param {...*} [values] The values to remove.\n     * @returns {Array} Returns `array`.\n     * @example\n     *\n     * var array = ['a', 'b', 'c', 'a', 'b', 'c'];\n     *\n     * _.pull(array, 'a', 'c');\n     * console.log(array);\n     * // => ['b', 'b']\n     */\n    var pull = baseRest(pullAll);\n\n    /**\n     * This method is like `_.pull` except that it accepts an array of values to remove.\n     *\n     * **Note:** Unlike `_.difference`, this method mutates `array`.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Array\n     * @param {Array} array The array to modify.\n     * @param {Array} values The values to remove.\n     * @returns {Array} Returns `array`.\n     * @example\n     *\n     * var array = ['a', 'b', 'c', 'a', 'b', 'c'];\n     *\n     * _.pullAll(array, ['a', 'c']);\n     * console.log(array);\n     * // => ['b', 'b']\n     */\n    function pullAll(array, values) {\n      return (array && array.length && values && values.length)\n        ? basePullAll(array, values)\n        : array;\n    }\n\n    /**\n     * This method is like `_.pullAll` except that it accepts `iteratee` which is\n     * invoked for each element of `array` and `values` to generate the criterion\n     * by which they're compared. The iteratee is invoked with one argument: (value).\n     *\n     * **Note:** Unlike `_.differenceBy`, this method mutates `array`.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Array\n     * @param {Array} array The array to modify.\n     * @param {Array} values The values to remove.\n     * @param {Function} [iteratee=_.identity] The iteratee invoked per element.\n     * @returns {Array} Returns `array`.\n     * @example\n     *\n     * var array = [{ 'x': 1 }, { 'x': 2 }, { 'x': 3 }, { 'x': 1 }];\n     *\n     * _.pullAllBy(array, [{ 'x': 1 }, { 'x': 3 }], 'x');\n     * console.log(array);\n     * // => [{ 'x': 2 }]\n     */\n    function pullAllBy(array, values, iteratee) {\n      return (array && array.length && values && values.length)\n        ? basePullAll(array, values, getIteratee(iteratee, 2))\n        : array;\n    }\n\n    /**\n     * This method is like `_.pullAll` except that it accepts `comparator` which\n     * is invoked to compare elements of `array` to `values`. The comparator is\n     * invoked with two arguments: (arrVal, othVal).\n     *\n     * **Note:** Unlike `_.differenceWith`, this method mutates `array`.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.6.0\n     * @category Array\n     * @param {Array} array The array to modify.\n     * @param {Array} values The values to remove.\n     * @param {Function} [comparator] The comparator invoked per element.\n     * @returns {Array} Returns `array`.\n     * @example\n     *\n     * var array = [{ 'x': 1, 'y': 2 }, { 'x': 3, 'y': 4 }, { 'x': 5, 'y': 6 }];\n     *\n     * _.pullAllWith(array, [{ 'x': 3, 'y': 4 }], _.isEqual);\n     * console.log(array);\n     * // => [{ 'x': 1, 'y': 2 }, { 'x': 5, 'y': 6 }]\n     */\n    function pullAllWith(array, values, comparator) {\n      return (array && array.length && values && values.length)\n        ? basePullAll(array, values, undefined, comparator)\n        : array;\n    }\n\n    /**\n     * Removes elements from `array` corresponding to `indexes` and returns an\n     * array of removed elements.\n     *\n     * **Note:** Unlike `_.at`, this method mutates `array`.\n     *\n     * @static\n     * @memberOf _\n     * @since 3.0.0\n     * @category Array\n     * @param {Array} array The array to modify.\n     * @param {...(number|number[])} [indexes] The indexes of elements to remove.\n     * @returns {Array} Returns the new array of removed elements.\n     * @example\n     *\n     * var array = ['a', 'b', 'c', 'd'];\n     * var pulled = _.pullAt(array, [1, 3]);\n     *\n     * console.log(array);\n     * // => ['a', 'c']\n     *\n     * console.log(pulled);\n     * // => ['b', 'd']\n     */\n    var pullAt = flatRest(function(array, indexes) {\n      var length = array == null ? 0 : array.length,\n          result = baseAt(array, indexes);\n\n      basePullAt(array, arrayMap(indexes, function(index) {\n        return isIndex(index, length) ? +index : index;\n      }).sort(compareAscending));\n\n      return result;\n    });\n\n    /**\n     * Removes all elements from `array` that `predicate` returns truthy for\n     * and returns an array of the removed elements. The predicate is invoked\n     * with three arguments: (value, index, array).\n     *\n     * **Note:** Unlike `_.filter`, this method mutates `array`. Use `_.pull`\n     * to pull elements from an array by value.\n     *\n     * @static\n     * @memberOf _\n     * @since 2.0.0\n     * @category Array\n     * @param {Array} array The array to modify.\n     * @param {Function} [predicate=_.identity] The function invoked per iteration.\n     * @returns {Array} Returns the new array of removed elements.\n     * @example\n     *\n     * var array = [1, 2, 3, 4];\n     * var evens = _.remove(array, function(n) {\n     *   return n % 2 == 0;\n     * });\n     *\n     * console.log(array);\n     * // => [1, 3]\n     *\n     * console.log(evens);\n     * // => [2, 4]\n     */\n    function remove(array, predicate) {\n      var result = [];\n      if (!(array && array.length)) {\n        return result;\n      }\n      var index = -1,\n          indexes = [],\n          length = array.length;\n\n      predicate = getIteratee(predicate, 3);\n      while (++index < length) {\n        var value = array[index];\n        if (predicate(value, index, array)) {\n          result.push(value);\n          indexes.push(index);\n        }\n      }\n      basePullAt(array, indexes);\n      return result;\n    }\n\n    /**\n     * Reverses `array` so that the first element becomes the last, the second\n     * element becomes the second to last, and so on.\n     *\n     * **Note:** This method mutates `array` and is based on\n     * [`Array#reverse`](https://mdn.io/Array/reverse).\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Array\n     * @param {Array} array The array to modify.\n     * @returns {Array} Returns `array`.\n     * @example\n     *\n     * var array = [1, 2, 3];\n     *\n     * _.reverse(array);\n     * // => [3, 2, 1]\n     *\n     * console.log(array);\n     * // => [3, 2, 1]\n     */\n    function reverse(array) {\n      return array == null ? array : nativeReverse.call(array);\n    }\n\n    /**\n     * Creates a slice of `array` from `start` up to, but not including, `end`.\n     *\n     * **Note:** This method is used instead of\n     * [`Array#slice`](https://mdn.io/Array/slice) to ensure dense arrays are\n     * returned.\n     *\n     * @static\n     * @memberOf _\n     * @since 3.0.0\n     * @category Array\n     * @param {Array} array The array to slice.\n     * @param {number} [start=0] The start position.\n     * @param {number} [end=array.length] The end position.\n     * @returns {Array} Returns the slice of `array`.\n     */\n    function slice(array, start, end) {\n      var length = array == null ? 0 : array.length;\n      if (!length) {\n        return [];\n      }\n      if (end && typeof end != 'number' && isIterateeCall(array, start, end)) {\n        start = 0;\n        end = length;\n      }\n      else {\n        start = start == null ? 0 : toInteger(start);\n        end = end === undefined ? length : toInteger(end);\n      }\n      return baseSlice(array, start, end);\n    }\n\n    /**\n     * Uses a binary search to determine the lowest index at which `value`\n     * should be inserted into `array` in order to maintain its sort order.\n     *\n     * @static\n     * @memberOf _\n     * @since 0.1.0\n     * @category Array\n     * @param {Array} array The sorted array to inspect.\n     * @param {*} value The value to evaluate.\n     * @returns {number} Returns the index at which `value` should be inserted\n     *  into `array`.\n     * @example\n     *\n     * _.sortedIndex([30, 50], 40);\n     * // => 1\n     */\n    function sortedIndex(array, value) {\n      return baseSortedIndex(array, value);\n    }\n\n    /**\n     * This method is like `_.sortedIndex` except that it accepts `iteratee`\n     * which is invoked for `value` and each element of `array` to compute their\n     * sort ranking. The iteratee is invoked with one argument: (value).\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Array\n     * @param {Array} array The sorted array to inspect.\n     * @param {*} value The value to evaluate.\n     * @param {Function} [iteratee=_.identity] The iteratee invoked per element.\n     * @returns {number} Returns the index at which `value` should be inserted\n     *  into `array`.\n     * @example\n     *\n     * var objects = [{ 'x': 4 }, { 'x': 5 }];\n     *\n     * _.sortedIndexBy(objects, { 'x': 4 }, function(o) { return o.x; });\n     * // => 0\n     *\n     * // The `_.property` iteratee shorthand.\n     * _.sortedIndexBy(objects, { 'x': 4 }, 'x');\n     * // => 0\n     */\n    function sortedIndexBy(array, value, iteratee) {\n      return baseSortedIndexBy(array, value, getIteratee(iteratee, 2));\n    }\n\n    /**\n     * This method is like `_.indexOf` except that it performs a binary\n     * search on a sorted `array`.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Array\n     * @param {Array} array The array to inspect.\n     * @param {*} value The value to search for.\n     * @returns {number} Returns the index of the matched value, else `-1`.\n     * @example\n     *\n     * _.sortedIndexOf([4, 5, 5, 5, 6], 5);\n     * // => 1\n     */\n    function sortedIndexOf(array, value) {\n      var length = array == null ? 0 : array.length;\n      if (length) {\n        var index = baseSortedIndex(array, value);\n        if (index < length && eq(array[index], value)) {\n          return index;\n        }\n      }\n      return -1;\n    }\n\n    /**\n     * This method is like `_.sortedIndex` except that it returns the highest\n     * index at which `value` should be inserted into `array` in order to\n     * maintain its sort order.\n     *\n     * @static\n     * @memberOf _\n     * @since 3.0.0\n     * @category Array\n     * @param {Array} array The sorted array to inspect.\n     * @param {*} value The value to evaluate.\n     * @returns {number} Returns the index at which `value` should be inserted\n     *  into `array`.\n     * @example\n     *\n     * _.sortedLastIndex([4, 5, 5, 5, 6], 5);\n     * // => 4\n     */\n    function sortedLastIndex(array, value) {\n      return baseSortedIndex(array, value, true);\n    }\n\n    /**\n     * This method is like `_.sortedLastIndex` except that it accepts `iteratee`\n     * which is invoked for `value` and each element of `array` to compute their\n     * sort ranking. The iteratee is invoked with one argument: (value).\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Array\n     * @param {Array} array The sorted array to inspect.\n     * @param {*} value The value to evaluate.\n     * @param {Function} [iteratee=_.identity] The iteratee invoked per element.\n     * @returns {number} Returns the index at which `value` should be inserted\n     *  into `array`.\n     * @example\n     *\n     * var objects = [{ 'x': 4 }, { 'x': 5 }];\n     *\n     * _.sortedLastIndexBy(objects, { 'x': 4 }, function(o) { return o.x; });\n     * // => 1\n     *\n     * // The `_.property` iteratee shorthand.\n     * _.sortedLastIndexBy(objects, { 'x': 4 }, 'x');\n     * // => 1\n     */\n    function sortedLastIndexBy(array, value, iteratee) {\n      return baseSortedIndexBy(array, value, getIteratee(iteratee, 2), true);\n    }\n\n    /**\n     * This method is like `_.lastIndexOf` except that it performs a binary\n     * search on a sorted `array`.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Array\n     * @param {Array} array The array to inspect.\n     * @param {*} value The value to search for.\n     * @returns {number} Returns the index of the matched value, else `-1`.\n     * @example\n     *\n     * _.sortedLastIndexOf([4, 5, 5, 5, 6], 5);\n     * // => 3\n     */\n    function sortedLastIndexOf(array, value) {\n      var length = array == null ? 0 : array.length;\n      if (length) {\n        var index = baseSortedIndex(array, value, true) - 1;\n        if (eq(array[index], value)) {\n          return index;\n        }\n      }\n      return -1;\n    }\n\n    /**\n     * This method is like `_.uniq` except that it's designed and optimized\n     * for sorted arrays.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Array\n     * @param {Array} array The array to inspect.\n     * @returns {Array} Returns the new duplicate free array.\n     * @example\n     *\n     * _.sortedUniq([1, 1, 2]);\n     * // => [1, 2]\n     */\n    function sortedUniq(array) {\n      return (array && array.length)\n        ? baseSortedUniq(array)\n        : [];\n    }\n\n    /**\n     * This method is like `_.uniqBy` except that it's designed and optimized\n     * for sorted arrays.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Array\n     * @param {Array} array The array to inspect.\n     * @param {Function} [iteratee] The iteratee invoked per element.\n     * @returns {Array} Returns the new duplicate free array.\n     * @example\n     *\n     * _.sortedUniqBy([1.1, 1.2, 2.3, 2.4], Math.floor);\n     * // => [1.1, 2.3]\n     */\n    function sortedUniqBy(array, iteratee) {\n      return (array && array.length)\n        ? baseSortedUniq(array, getIteratee(iteratee, 2))\n        : [];\n    }\n\n    /**\n     * Gets all but the first element of `array`.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Array\n     * @param {Array} array The array to query.\n     * @returns {Array} Returns the slice of `array`.\n     * @example\n     *\n     * _.tail([1, 2, 3]);\n     * // => [2, 3]\n     */\n    function tail(array) {\n      var length = array == null ? 0 : array.length;\n      return length ? baseSlice(array, 1, length) : [];\n    }\n\n    /**\n     * Creates a slice of `array` with `n` elements taken from the beginning.\n     *\n     * @static\n     * @memberOf _\n     * @since 0.1.0\n     * @category Array\n     * @param {Array} array The array to query.\n     * @param {number} [n=1] The number of elements to take.\n     * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.\n     * @returns {Array} Returns the slice of `array`.\n     * @example\n     *\n     * _.take([1, 2, 3]);\n     * // => [1]\n     *\n     * _.take([1, 2, 3], 2);\n     * // => [1, 2]\n     *\n     * _.take([1, 2, 3], 5);\n     * // => [1, 2, 3]\n     *\n     * _.take([1, 2, 3], 0);\n     * // => []\n     */\n    function take(array, n, guard) {\n      if (!(array && array.length)) {\n        return [];\n      }\n      n = (guard || n === undefined) ? 1 : toInteger(n);\n      return baseSlice(array, 0, n < 0 ? 0 : n);\n    }\n\n    /**\n     * Creates a slice of `array` with `n` elements taken from the end.\n     *\n     * @static\n     * @memberOf _\n     * @since 3.0.0\n     * @category Array\n     * @param {Array} array The array to query.\n     * @param {number} [n=1] The number of elements to take.\n     * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.\n     * @returns {Array} Returns the slice of `array`.\n     * @example\n     *\n     * _.takeRight([1, 2, 3]);\n     * // => [3]\n     *\n     * _.takeRight([1, 2, 3], 2);\n     * // => [2, 3]\n     *\n     * _.takeRight([1, 2, 3], 5);\n     * // => [1, 2, 3]\n     *\n     * _.takeRight([1, 2, 3], 0);\n     * // => []\n     */\n    function takeRight(array, n, guard) {\n      var length = array == null ? 0 : array.length;\n      if (!length) {\n        return [];\n      }\n      n = (guard || n === undefined) ? 1 : toInteger(n);\n      n = length - n;\n      return baseSlice(array, n < 0 ? 0 : n, length);\n    }\n\n    /**\n     * Creates a slice of `array` with elements taken from the end. Elements are\n     * taken until `predicate` returns falsey. The predicate is invoked with\n     * three arguments: (value, index, array).\n     *\n     * @static\n     * @memberOf _\n     * @since 3.0.0\n     * @category Array\n     * @param {Array} array The array to query.\n     * @param {Function} [predicate=_.identity] The function invoked per iteration.\n     * @returns {Array} Returns the slice of `array`.\n     * @example\n     *\n     * var users = [\n     *   { 'user': 'barney',  'active': true },\n     *   { 'user': 'fred',    'active': false },\n     *   { 'user': 'pebbles', 'active': false }\n     * ];\n     *\n     * _.takeRightWhile(users, function(o) { return !o.active; });\n     * // => objects for ['fred', 'pebbles']\n     *\n     * // The `_.matches` iteratee shorthand.\n     * _.takeRightWhile(users, { 'user': 'pebbles', 'active': false });\n     * // => objects for ['pebbles']\n     *\n     * // The `_.matchesProperty` iteratee shorthand.\n     * _.takeRightWhile(users, ['active', false]);\n     * // => objects for ['fred', 'pebbles']\n     *\n     * // The `_.property` iteratee shorthand.\n     * _.takeRightWhile(users, 'active');\n     * // => []\n     */\n    function takeRightWhile(array, predicate) {\n      return (array && array.length)\n        ? baseWhile(array, getIteratee(predicate, 3), false, true)\n        : [];\n    }\n\n    /**\n     * Creates a slice of `array` with elements taken from the beginning. Elements\n     * are taken until `predicate` returns falsey. The predicate is invoked with\n     * three arguments: (value, index, array).\n     *\n     * @static\n     * @memberOf _\n     * @since 3.0.0\n     * @category Array\n     * @param {Array} array The array to query.\n     * @param {Function} [predicate=_.identity] The function invoked per iteration.\n     * @returns {Array} Returns the slice of `array`.\n     * @example\n     *\n     * var users = [\n     *   { 'user': 'barney',  'active': false },\n     *   { 'user': 'fred',    'active': false },\n     *   { 'user': 'pebbles', 'active': true }\n     * ];\n     *\n     * _.takeWhile(users, function(o) { return !o.active; });\n     * // => objects for ['barney', 'fred']\n     *\n     * // The `_.matches` iteratee shorthand.\n     * _.takeWhile(users, { 'user': 'barney', 'active': false });\n     * // => objects for ['barney']\n     *\n     * // The `_.matchesProperty` iteratee shorthand.\n     * _.takeWhile(users, ['active', false]);\n     * // => objects for ['barney', 'fred']\n     *\n     * // The `_.property` iteratee shorthand.\n     * _.takeWhile(users, 'active');\n     * // => []\n     */\n    function takeWhile(array, predicate) {\n      return (array && array.length)\n        ? baseWhile(array, getIteratee(predicate, 3))\n        : [];\n    }\n\n    /**\n     * Creates an array of unique values, in order, from all given arrays using\n     * [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)\n     * for equality comparisons.\n     *\n     * @static\n     * @memberOf _\n     * @since 0.1.0\n     * @category Array\n     * @param {...Array} [arrays] The arrays to inspect.\n     * @returns {Array} Returns the new array of combined values.\n     * @example\n     *\n     * _.union([2], [1, 2]);\n     * // => [2, 1]\n     */\n    var union = baseRest(function(arrays) {\n      return baseUniq(baseFlatten(arrays, 1, isArrayLikeObject, true));\n    });\n\n    /**\n     * This method is like `_.union` except that it accepts `iteratee` which is\n     * invoked for each element of each `arrays` to generate the criterion by\n     * which uniqueness is computed. Result values are chosen from the first\n     * array in which the value occurs. The iteratee is invoked with one argument:\n     * (value).\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Array\n     * @param {...Array} [arrays] The arrays to inspect.\n     * @param {Function} [iteratee=_.identity] The iteratee invoked per element.\n     * @returns {Array} Returns the new array of combined values.\n     * @example\n     *\n     * _.unionBy([2.1], [1.2, 2.3], Math.floor);\n     * // => [2.1, 1.2]\n     *\n     * // The `_.property` iteratee shorthand.\n     * _.unionBy([{ 'x': 1 }], [{ 'x': 2 }, { 'x': 1 }], 'x');\n     * // => [{ 'x': 1 }, { 'x': 2 }]\n     */\n    var unionBy = baseRest(function(arrays) {\n      var iteratee = last(arrays);\n      if (isArrayLikeObject(iteratee)) {\n        iteratee = undefined;\n      }\n      return baseUniq(baseFlatten(arrays, 1, isArrayLikeObject, true), getIteratee(iteratee, 2));\n    });\n\n    /**\n     * This method is like `_.union` except that it accepts `comparator` which\n     * is invoked to compare elements of `arrays`. Result values are chosen from\n     * the first array in which the value occurs. The comparator is invoked\n     * with two arguments: (arrVal, othVal).\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Array\n     * @param {...Array} [arrays] The arrays to inspect.\n     * @param {Function} [comparator] The comparator invoked per element.\n     * @returns {Array} Returns the new array of combined values.\n     * @example\n     *\n     * var objects = [{ 'x': 1, 'y': 2 }, { 'x': 2, 'y': 1 }];\n     * var others = [{ 'x': 1, 'y': 1 }, { 'x': 1, 'y': 2 }];\n     *\n     * _.unionWith(objects, others, _.isEqual);\n     * // => [{ 'x': 1, 'y': 2 }, { 'x': 2, 'y': 1 }, { 'x': 1, 'y': 1 }]\n     */\n    var unionWith = baseRest(function(arrays) {\n      var comparator = last(arrays);\n      comparator = typeof comparator == 'function' ? comparator : undefined;\n      return baseUniq(baseFlatten(arrays, 1, isArrayLikeObject, true), undefined, comparator);\n    });\n\n    /**\n     * Creates a duplicate-free version of an array, using\n     * [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)\n     * for equality comparisons, in which only the first occurrence of each element\n     * is kept. The order of result values is determined by the order they occur\n     * in the array.\n     *\n     * @static\n     * @memberOf _\n     * @since 0.1.0\n     * @category Array\n     * @param {Array} array The array to inspect.\n     * @returns {Array} Returns the new duplicate free array.\n     * @example\n     *\n     * _.uniq([2, 1, 2]);\n     * // => [2, 1]\n     */\n    function uniq(array) {\n      return (array && array.length) ? baseUniq(array) : [];\n    }\n\n    /**\n     * This method is like `_.uniq` except that it accepts `iteratee` which is\n     * invoked for each element in `array` to generate the criterion by which\n     * uniqueness is computed. The order of result values is determined by the\n     * order they occur in the array. The iteratee is invoked with one argument:\n     * (value).\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Array\n     * @param {Array} array The array to inspect.\n     * @param {Function} [iteratee=_.identity] The iteratee invoked per element.\n     * @returns {Array} Returns the new duplicate free array.\n     * @example\n     *\n     * _.uniqBy([2.1, 1.2, 2.3], Math.floor);\n     * // => [2.1, 1.2]\n     *\n     * // The `_.property` iteratee shorthand.\n     * _.uniqBy([{ 'x': 1 }, { 'x': 2 }, { 'x': 1 }], 'x');\n     * // => [{ 'x': 1 }, { 'x': 2 }]\n     */\n    function uniqBy(array, iteratee) {\n      return (array && array.length) ? baseUniq(array, getIteratee(iteratee, 2)) : [];\n    }\n\n    /**\n     * This method is like `_.uniq` except that it accepts `comparator` which\n     * is invoked to compare elements of `array`. The order of result values is\n     * determined by the order they occur in the array.The comparator is invoked\n     * with two arguments: (arrVal, othVal).\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Array\n     * @param {Array} array The array to inspect.\n     * @param {Function} [comparator] The comparator invoked per element.\n     * @returns {Array} Returns the new duplicate free array.\n     * @example\n     *\n     * var objects = [{ 'x': 1, 'y': 2 }, { 'x': 2, 'y': 1 }, { 'x': 1, 'y': 2 }];\n     *\n     * _.uniqWith(objects, _.isEqual);\n     * // => [{ 'x': 1, 'y': 2 }, { 'x': 2, 'y': 1 }]\n     */\n    function uniqWith(array, comparator) {\n      comparator = typeof comparator == 'function' ? comparator : undefined;\n      return (array && array.length) ? baseUniq(array, undefined, comparator) : [];\n    }\n\n    /**\n     * This method is like `_.zip` except that it accepts an array of grouped\n     * elements and creates an array regrouping the elements to their pre-zip\n     * configuration.\n     *\n     * @static\n     * @memberOf _\n     * @since 1.2.0\n     * @category Array\n     * @param {Array} array The array of grouped elements to process.\n     * @returns {Array} Returns the new array of regrouped elements.\n     * @example\n     *\n     * var zipped = _.zip(['a', 'b'], [1, 2], [true, false]);\n     * // => [['a', 1, true], ['b', 2, false]]\n     *\n     * _.unzip(zipped);\n     * // => [['a', 'b'], [1, 2], [true, false]]\n     */\n    function unzip(array) {\n      if (!(array && array.length)) {\n        return [];\n      }\n      var length = 0;\n      array = arrayFilter(array, function(group) {\n        if (isArrayLikeObject(group)) {\n          length = nativeMax(group.length, length);\n          return true;\n        }\n      });\n      return baseTimes(length, function(index) {\n        return arrayMap(array, baseProperty(index));\n      });\n    }\n\n    /**\n     * This method is like `_.unzip` except that it accepts `iteratee` to specify\n     * how regrouped values should be combined. The iteratee is invoked with the\n     * elements of each group: (...group).\n     *\n     * @static\n     * @memberOf _\n     * @since 3.8.0\n     * @category Array\n     * @param {Array} array The array of grouped elements to process.\n     * @param {Function} [iteratee=_.identity] The function to combine\n     *  regrouped values.\n     * @returns {Array} Returns the new array of regrouped elements.\n     * @example\n     *\n     * var zipped = _.zip([1, 2], [10, 20], [100, 200]);\n     * // => [[1, 10, 100], [2, 20, 200]]\n     *\n     * _.unzipWith(zipped, _.add);\n     * // => [3, 30, 300]\n     */\n    function unzipWith(array, iteratee) {\n      if (!(array && array.length)) {\n        return [];\n      }\n      var result = unzip(array);\n      if (iteratee == null) {\n        return result;\n      }\n      return arrayMap(result, function(group) {\n        return apply(iteratee, undefined, group);\n      });\n    }\n\n    /**\n     * Creates an array excluding all given values using\n     * [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)\n     * for equality comparisons.\n     *\n     * **Note:** Unlike `_.pull`, this method returns a new array.\n     *\n     * @static\n     * @memberOf _\n     * @since 0.1.0\n     * @category Array\n     * @param {Array} array The array to inspect.\n     * @param {...*} [values] The values to exclude.\n     * @returns {Array} Returns the new array of filtered values.\n     * @see _.difference, _.xor\n     * @example\n     *\n     * _.without([2, 1, 2, 3], 1, 2);\n     * // => [3]\n     */\n    var without = baseRest(function(array, values) {\n      return isArrayLikeObject(array)\n        ? baseDifference(array, values)\n        : [];\n    });\n\n    /**\n     * Creates an array of unique values that is the\n     * [symmetric difference](https://en.wikipedia.org/wiki/Symmetric_difference)\n     * of the given arrays. The order of result values is determined by the order\n     * they occur in the arrays.\n     *\n     * @static\n     * @memberOf _\n     * @since 2.4.0\n     * @category Array\n     * @param {...Array} [arrays] The arrays to inspect.\n     * @returns {Array} Returns the new array of filtered values.\n     * @see _.difference, _.without\n     * @example\n     *\n     * _.xor([2, 1], [2, 3]);\n     * // => [1, 3]\n     */\n    var xor = baseRest(function(arrays) {\n      return baseXor(arrayFilter(arrays, isArrayLikeObject));\n    });\n\n    /**\n     * This method is like `_.xor` except that it accepts `iteratee` which is\n     * invoked for each element of each `arrays` to generate the criterion by\n     * which by which they're compared. The order of result values is determined\n     * by the order they occur in the arrays. The iteratee is invoked with one\n     * argument: (value).\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Array\n     * @param {...Array} [arrays] The arrays to inspect.\n     * @param {Function} [iteratee=_.identity] The iteratee invoked per element.\n     * @returns {Array} Returns the new array of filtered values.\n     * @example\n     *\n     * _.xorBy([2.1, 1.2], [2.3, 3.4], Math.floor);\n     * // => [1.2, 3.4]\n     *\n     * // The `_.property` iteratee shorthand.\n     * _.xorBy([{ 'x': 1 }], [{ 'x': 2 }, { 'x': 1 }], 'x');\n     * // => [{ 'x': 2 }]\n     */\n    var xorBy = baseRest(function(arrays) {\n      var iteratee = last(arrays);\n      if (isArrayLikeObject(iteratee)) {\n        iteratee = undefined;\n      }\n      return baseXor(arrayFilter(arrays, isArrayLikeObject), getIteratee(iteratee, 2));\n    });\n\n    /**\n     * This method is like `_.xor` except that it accepts `comparator` which is\n     * invoked to compare elements of `arrays`. The order of result values is\n     * determined by the order they occur in the arrays. The comparator is invoked\n     * with two arguments: (arrVal, othVal).\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Array\n     * @param {...Array} [arrays] The arrays to inspect.\n     * @param {Function} [comparator] The comparator invoked per element.\n     * @returns {Array} Returns the new array of filtered values.\n     * @example\n     *\n     * var objects = [{ 'x': 1, 'y': 2 }, { 'x': 2, 'y': 1 }];\n     * var others = [{ 'x': 1, 'y': 1 }, { 'x': 1, 'y': 2 }];\n     *\n     * _.xorWith(objects, others, _.isEqual);\n     * // => [{ 'x': 2, 'y': 1 }, { 'x': 1, 'y': 1 }]\n     */\n    var xorWith = baseRest(function(arrays) {\n      var comparator = last(arrays);\n      comparator = typeof comparator == 'function' ? comparator : undefined;\n      return baseXor(arrayFilter(arrays, isArrayLikeObject), undefined, comparator);\n    });\n\n    /**\n     * Creates an array of grouped elements, the first of which contains the\n     * first elements of the given arrays, the second of which contains the\n     * second elements of the given arrays, and so on.\n     *\n     * @static\n     * @memberOf _\n     * @since 0.1.0\n     * @category Array\n     * @param {...Array} [arrays] The arrays to process.\n     * @returns {Array} Returns the new array of grouped elements.\n     * @example\n     *\n     * _.zip(['a', 'b'], [1, 2], [true, false]);\n     * // => [['a', 1, true], ['b', 2, false]]\n     */\n    var zip = baseRest(unzip);\n\n    /**\n     * This method is like `_.fromPairs` except that it accepts two arrays,\n     * one of property identifiers and one of corresponding values.\n     *\n     * @static\n     * @memberOf _\n     * @since 0.4.0\n     * @category Array\n     * @param {Array} [props=[]] The property identifiers.\n     * @param {Array} [values=[]] The property values.\n     * @returns {Object} Returns the new object.\n     * @example\n     *\n     * _.zipObject(['a', 'b'], [1, 2]);\n     * // => { 'a': 1, 'b': 2 }\n     */\n    function zipObject(props, values) {\n      return baseZipObject(props || [], values || [], assignValue);\n    }\n\n    /**\n     * This method is like `_.zipObject` except that it supports property paths.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.1.0\n     * @category Array\n     * @param {Array} [props=[]] The property identifiers.\n     * @param {Array} [values=[]] The property values.\n     * @returns {Object} Returns the new object.\n     * @example\n     *\n     * _.zipObjectDeep(['a.b[0].c', 'a.b[1].d'], [1, 2]);\n     * // => { 'a': { 'b': [{ 'c': 1 }, { 'd': 2 }] } }\n     */\n    function zipObjectDeep(props, values) {\n      return baseZipObject(props || [], values || [], baseSet);\n    }\n\n    /**\n     * This method is like `_.zip` except that it accepts `iteratee` to specify\n     * how grouped values should be combined. The iteratee is invoked with the\n     * elements of each group: (...group).\n     *\n     * @static\n     * @memberOf _\n     * @since 3.8.0\n     * @category Array\n     * @param {...Array} [arrays] The arrays to process.\n     * @param {Function} [iteratee=_.identity] The function to combine\n     *  grouped values.\n     * @returns {Array} Returns the new array of grouped elements.\n     * @example\n     *\n     * _.zipWith([1, 2], [10, 20], [100, 200], function(a, b, c) {\n     *   return a + b + c;\n     * });\n     * // => [111, 222]\n     */\n    var zipWith = baseRest(function(arrays) {\n      var length = arrays.length,\n          iteratee = length > 1 ? arrays[length - 1] : undefined;\n\n      iteratee = typeof iteratee == 'function' ? (arrays.pop(), iteratee) : undefined;\n      return unzipWith(arrays, iteratee);\n    });\n\n    /*------------------------------------------------------------------------*/\n\n    /**\n     * Creates a `lodash` wrapper instance that wraps `value` with explicit method\n     * chain sequences enabled. The result of such sequences must be unwrapped\n     * with `_#value`.\n     *\n     * @static\n     * @memberOf _\n     * @since 1.3.0\n     * @category Seq\n     * @param {*} value The value to wrap.\n     * @returns {Object} Returns the new `lodash` wrapper instance.\n     * @example\n     *\n     * var users = [\n     *   { 'user': 'barney',  'age': 36 },\n     *   { 'user': 'fred',    'age': 40 },\n     *   { 'user': 'pebbles', 'age': 1 }\n     * ];\n     *\n     * var youngest = _\n     *   .chain(users)\n     *   .sortBy('age')\n     *   .map(function(o) {\n     *     return o.user + ' is ' + o.age;\n     *   })\n     *   .head()\n     *   .value();\n     * // => 'pebbles is 1'\n     */\n    function chain(value) {\n      var result = lodash(value);\n      result.__chain__ = true;\n      return result;\n    }\n\n    /**\n     * This method invokes `interceptor` and returns `value`. The interceptor\n     * is invoked with one argument; (value). The purpose of this method is to\n     * \"tap into\" a method chain sequence in order to modify intermediate results.\n     *\n     * @static\n     * @memberOf _\n     * @since 0.1.0\n     * @category Seq\n     * @param {*} value The value to provide to `interceptor`.\n     * @param {Function} interceptor The function to invoke.\n     * @returns {*} Returns `value`.\n     * @example\n     *\n     * _([1, 2, 3])\n     *  .tap(function(array) {\n     *    // Mutate input array.\n     *    array.pop();\n     *  })\n     *  .reverse()\n     *  .value();\n     * // => [2, 1]\n     */\n    function tap(value, interceptor) {\n      interceptor(value);\n      return value;\n    }\n\n    /**\n     * This method is like `_.tap` except that it returns the result of `interceptor`.\n     * The purpose of this method is to \"pass thru\" values replacing intermediate\n     * results in a method chain sequence.\n     *\n     * @static\n     * @memberOf _\n     * @since 3.0.0\n     * @category Seq\n     * @param {*} value The value to provide to `interceptor`.\n     * @param {Function} interceptor The function to invoke.\n     * @returns {*} Returns the result of `interceptor`.\n     * @example\n     *\n     * _('  abc  ')\n     *  .chain()\n     *  .trim()\n     *  .thru(function(value) {\n     *    return [value];\n     *  })\n     *  .value();\n     * // => ['abc']\n     */\n    function thru(value, interceptor) {\n      return interceptor(value);\n    }\n\n    /**\n     * This method is the wrapper version of `_.at`.\n     *\n     * @name at\n     * @memberOf _\n     * @since 1.0.0\n     * @category Seq\n     * @param {...(string|string[])} [paths] The property paths to pick.\n     * @returns {Object} Returns the new `lodash` wrapper instance.\n     * @example\n     *\n     * var object = { 'a': [{ 'b': { 'c': 3 } }, 4] };\n     *\n     * _(object).at(['a[0].b.c', 'a[1]']).value();\n     * // => [3, 4]\n     */\n    var wrapperAt = flatRest(function(paths) {\n      var length = paths.length,\n          start = length ? paths[0] : 0,\n          value = this.__wrapped__,\n          interceptor = function(object) { return baseAt(object, paths); };\n\n      if (length > 1 || this.__actions__.length ||\n          !(value instanceof LazyWrapper) || !isIndex(start)) {\n        return this.thru(interceptor);\n      }\n      value = value.slice(start, +start + (length ? 1 : 0));\n      value.__actions__.push({\n        'func': thru,\n        'args': [interceptor],\n        'thisArg': undefined\n      });\n      return new LodashWrapper(value, this.__chain__).thru(function(array) {\n        if (length && !array.length) {\n          array.push(undefined);\n        }\n        return array;\n      });\n    });\n\n    /**\n     * Creates a `lodash` wrapper instance with explicit method chain sequences enabled.\n     *\n     * @name chain\n     * @memberOf _\n     * @since 0.1.0\n     * @category Seq\n     * @returns {Object} Returns the new `lodash` wrapper instance.\n     * @example\n     *\n     * var users = [\n     *   { 'user': 'barney', 'age': 36 },\n     *   { 'user': 'fred',   'age': 40 }\n     * ];\n     *\n     * // A sequence without explicit chaining.\n     * _(users).head();\n     * // => { 'user': 'barney', 'age': 36 }\n     *\n     * // A sequence with explicit chaining.\n     * _(users)\n     *   .chain()\n     *   .head()\n     *   .pick('user')\n     *   .value();\n     * // => { 'user': 'barney' }\n     */\n    function wrapperChain() {\n      return chain(this);\n    }\n\n    /**\n     * Executes the chain sequence and returns the wrapped result.\n     *\n     * @name commit\n     * @memberOf _\n     * @since 3.2.0\n     * @category Seq\n     * @returns {Object} Returns the new `lodash` wrapper instance.\n     * @example\n     *\n     * var array = [1, 2];\n     * var wrapped = _(array).push(3);\n     *\n     * console.log(array);\n     * // => [1, 2]\n     *\n     * wrapped = wrapped.commit();\n     * console.log(array);\n     * // => [1, 2, 3]\n     *\n     * wrapped.last();\n     * // => 3\n     *\n     * console.log(array);\n     * // => [1, 2, 3]\n     */\n    function wrapperCommit() {\n      return new LodashWrapper(this.value(), this.__chain__);\n    }\n\n    /**\n     * Gets the next value on a wrapped object following the\n     * [iterator protocol](https://mdn.io/iteration_protocols#iterator).\n     *\n     * @name next\n     * @memberOf _\n     * @since 4.0.0\n     * @category Seq\n     * @returns {Object} Returns the next iterator value.\n     * @example\n     *\n     * var wrapped = _([1, 2]);\n     *\n     * wrapped.next();\n     * // => { 'done': false, 'value': 1 }\n     *\n     * wrapped.next();\n     * // => { 'done': false, 'value': 2 }\n     *\n     * wrapped.next();\n     * // => { 'done': true, 'value': undefined }\n     */\n    function wrapperNext() {\n      if (this.__values__ === undefined) {\n        this.__values__ = toArray(this.value());\n      }\n      var done = this.__index__ >= this.__values__.length,\n          value = done ? undefined : this.__values__[this.__index__++];\n\n      return { 'done': done, 'value': value };\n    }\n\n    /**\n     * Enables the wrapper to be iterable.\n     *\n     * @name Symbol.iterator\n     * @memberOf _\n     * @since 4.0.0\n     * @category Seq\n     * @returns {Object} Returns the wrapper object.\n     * @example\n     *\n     * var wrapped = _([1, 2]);\n     *\n     * wrapped[Symbol.iterator]() === wrapped;\n     * // => true\n     *\n     * Array.from(wrapped);\n     * // => [1, 2]\n     */\n    function wrapperToIterator() {\n      return this;\n    }\n\n    /**\n     * Creates a clone of the chain sequence planting `value` as the wrapped value.\n     *\n     * @name plant\n     * @memberOf _\n     * @since 3.2.0\n     * @category Seq\n     * @param {*} value The value to plant.\n     * @returns {Object} Returns the new `lodash` wrapper instance.\n     * @example\n     *\n     * function square(n) {\n     *   return n * n;\n     * }\n     *\n     * var wrapped = _([1, 2]).map(square);\n     * var other = wrapped.plant([3, 4]);\n     *\n     * other.value();\n     * // => [9, 16]\n     *\n     * wrapped.value();\n     * // => [1, 4]\n     */\n    function wrapperPlant(value) {\n      var result,\n          parent = this;\n\n      while (parent instanceof baseLodash) {\n        var clone = wrapperClone(parent);\n        clone.__index__ = 0;\n        clone.__values__ = undefined;\n        if (result) {\n          previous.__wrapped__ = clone;\n        } else {\n          result = clone;\n        }\n        var previous = clone;\n        parent = parent.__wrapped__;\n      }\n      previous.__wrapped__ = value;\n      return result;\n    }\n\n    /**\n     * This method is the wrapper version of `_.reverse`.\n     *\n     * **Note:** This method mutates the wrapped array.\n     *\n     * @name reverse\n     * @memberOf _\n     * @since 0.1.0\n     * @category Seq\n     * @returns {Object} Returns the new `lodash` wrapper instance.\n     * @example\n     *\n     * var array = [1, 2, 3];\n     *\n     * _(array).reverse().value()\n     * // => [3, 2, 1]\n     *\n     * console.log(array);\n     * // => [3, 2, 1]\n     */\n    function wrapperReverse() {\n      var value = this.__wrapped__;\n      if (value instanceof LazyWrapper) {\n        var wrapped = value;\n        if (this.__actions__.length) {\n          wrapped = new LazyWrapper(this);\n        }\n        wrapped = wrapped.reverse();\n        wrapped.__actions__.push({\n          'func': thru,\n          'args': [reverse],\n          'thisArg': undefined\n        });\n        return new LodashWrapper(wrapped, this.__chain__);\n      }\n      return this.thru(reverse);\n    }\n\n    /**\n     * Executes the chain sequence to resolve the unwrapped value.\n     *\n     * @name value\n     * @memberOf _\n     * @since 0.1.0\n     * @alias toJSON, valueOf\n     * @category Seq\n     * @returns {*} Returns the resolved unwrapped value.\n     * @example\n     *\n     * _([1, 2, 3]).value();\n     * // => [1, 2, 3]\n     */\n    function wrapperValue() {\n      return baseWrapperValue(this.__wrapped__, this.__actions__);\n    }\n\n    /*------------------------------------------------------------------------*/\n\n    /**\n     * Creates an object composed of keys generated from the results of running\n     * each element of `collection` thru `iteratee`. The corresponding value of\n     * each key is the number of times the key was returned by `iteratee`. The\n     * iteratee is invoked with one argument: (value).\n     *\n     * @static\n     * @memberOf _\n     * @since 0.5.0\n     * @category Collection\n     * @param {Array|Object} collection The collection to iterate over.\n     * @param {Function} [iteratee=_.identity] The iteratee to transform keys.\n     * @returns {Object} Returns the composed aggregate object.\n     * @example\n     *\n     * _.countBy([6.1, 4.2, 6.3], Math.floor);\n     * // => { '4': 1, '6': 2 }\n     *\n     * // The `_.property` iteratee shorthand.\n     * _.countBy(['one', 'two', 'three'], 'length');\n     * // => { '3': 2, '5': 1 }\n     */\n    var countBy = createAggregator(function(result, value, key) {\n      if (hasOwnProperty.call(result, key)) {\n        ++result[key];\n      } else {\n        baseAssignValue(result, key, 1);\n      }\n    });\n\n    /**\n     * Checks if `predicate` returns truthy for **all** elements of `collection`.\n     * Iteration is stopped once `predicate` returns falsey. The predicate is\n     * invoked with three arguments: (value, index|key, collection).\n     *\n     * **Note:** This method returns `true` for\n     * [empty collections](https://en.wikipedia.org/wiki/Empty_set) because\n     * [everything is true](https://en.wikipedia.org/wiki/Vacuous_truth) of\n     * elements of empty collections.\n     *\n     * @static\n     * @memberOf _\n     * @since 0.1.0\n     * @category Collection\n     * @param {Array|Object} collection The collection to iterate over.\n     * @param {Function} [predicate=_.identity] The function invoked per iteration.\n     * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.\n     * @returns {boolean} Returns `true` if all elements pass the predicate check,\n     *  else `false`.\n     * @example\n     *\n     * _.every([true, 1, null, 'yes'], Boolean);\n     * // => false\n     *\n     * var users = [\n     *   { 'user': 'barney', 'age': 36, 'active': false },\n     *   { 'user': 'fred',   'age': 40, 'active': false }\n     * ];\n     *\n     * // The `_.matches` iteratee shorthand.\n     * _.every(users, { 'user': 'barney', 'active': false });\n     * // => false\n     *\n     * // The `_.matchesProperty` iteratee shorthand.\n     * _.every(users, ['active', false]);\n     * // => true\n     *\n     * // The `_.property` iteratee shorthand.\n     * _.every(users, 'active');\n     * // => false\n     */\n    function every(collection, predicate, guard) {\n      var func = isArray(collection) ? arrayEvery : baseEvery;\n      if (guard && isIterateeCall(collection, predicate, guard)) {\n        predicate = undefined;\n      }\n      return func(collection, getIteratee(predicate, 3));\n    }\n\n    /**\n     * Iterates over elements of `collection`, returning an array of all elements\n     * `predicate` returns truthy for. The predicate is invoked with three\n     * arguments: (value, index|key, collection).\n     *\n     * **Note:** Unlike `_.remove`, this method returns a new array.\n     *\n     * @static\n     * @memberOf _\n     * @since 0.1.0\n     * @category Collection\n     * @param {Array|Object} collection The collection to iterate over.\n     * @param {Function} [predicate=_.identity] The function invoked per iteration.\n     * @returns {Array} Returns the new filtered array.\n     * @see _.reject\n     * @example\n     *\n     * var users = [\n     *   { 'user': 'barney', 'age': 36, 'active': true },\n     *   { 'user': 'fred',   'age': 40, 'active': false }\n     * ];\n     *\n     * _.filter(users, function(o) { return !o.active; });\n     * // => objects for ['fred']\n     *\n     * // The `_.matches` iteratee shorthand.\n     * _.filter(users, { 'age': 36, 'active': true });\n     * // => objects for ['barney']\n     *\n     * // The `_.matchesProperty` iteratee shorthand.\n     * _.filter(users, ['active', false]);\n     * // => objects for ['fred']\n     *\n     * // The `_.property` iteratee shorthand.\n     * _.filter(users, 'active');\n     * // => objects for ['barney']\n     *\n     * // Combining several predicates using `_.overEvery` or `_.overSome`.\n     * _.filter(users, _.overSome([{ 'age': 36 }, ['age', 40]]));\n     * // => objects for ['fred', 'barney']\n     */\n    function filter(collection, predicate) {\n      var func = isArray(collection) ? arrayFilter : baseFilter;\n      return func(collection, getIteratee(predicate, 3));\n    }\n\n    /**\n     * Iterates over elements of `collection`, returning the first element\n     * `predicate` returns truthy for. The predicate is invoked with three\n     * arguments: (value, index|key, collection).\n     *\n     * @static\n     * @memberOf _\n     * @since 0.1.0\n     * @category Collection\n     * @param {Array|Object} collection The collection to inspect.\n     * @param {Function} [predicate=_.identity] The function invoked per iteration.\n     * @param {number} [fromIndex=0] The index to search from.\n     * @returns {*} Returns the matched element, else `undefined`.\n     * @example\n     *\n     * var users = [\n     *   { 'user': 'barney',  'age': 36, 'active': true },\n     *   { 'user': 'fred',    'age': 40, 'active': false },\n     *   { 'user': 'pebbles', 'age': 1,  'active': true }\n     * ];\n     *\n     * _.find(users, function(o) { return o.age < 40; });\n     * // => object for 'barney'\n     *\n     * // The `_.matches` iteratee shorthand.\n     * _.find(users, { 'age': 1, 'active': true });\n     * // => object for 'pebbles'\n     *\n     * // The `_.matchesProperty` iteratee shorthand.\n     * _.find(users, ['active', false]);\n     * // => object for 'fred'\n     *\n     * // The `_.property` iteratee shorthand.\n     * _.find(users, 'active');\n     * // => object for 'barney'\n     */\n    var find = createFind(findIndex);\n\n    /**\n     * This method is like `_.find` except that it iterates over elements of\n     * `collection` from right to left.\n     *\n     * @static\n     * @memberOf _\n     * @since 2.0.0\n     * @category Collection\n     * @param {Array|Object} collection The collection to inspect.\n     * @param {Function} [predicate=_.identity] The function invoked per iteration.\n     * @param {number} [fromIndex=collection.length-1] The index to search from.\n     * @returns {*} Returns the matched element, else `undefined`.\n     * @example\n     *\n     * _.findLast([1, 2, 3, 4], function(n) {\n     *   return n % 2 == 1;\n     * });\n     * // => 3\n     */\n    var findLast = createFind(findLastIndex);\n\n    /**\n     * Creates a flattened array of values by running each element in `collection`\n     * thru `iteratee` and flattening the mapped results. The iteratee is invoked\n     * with three arguments: (value, index|key, collection).\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Collection\n     * @param {Array|Object} collection The collection to iterate over.\n     * @param {Function} [iteratee=_.identity] The function invoked per iteration.\n     * @returns {Array} Returns the new flattened array.\n     * @example\n     *\n     * function duplicate(n) {\n     *   return [n, n];\n     * }\n     *\n     * _.flatMap([1, 2], duplicate);\n     * // => [1, 1, 2, 2]\n     */\n    function flatMap(collection, iteratee) {\n      return baseFlatten(map(collection, iteratee), 1);\n    }\n\n    /**\n     * This method is like `_.flatMap` except that it recursively flattens the\n     * mapped results.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.7.0\n     * @category Collection\n     * @param {Array|Object} collection The collection to iterate over.\n     * @param {Function} [iteratee=_.identity] The function invoked per iteration.\n     * @returns {Array} Returns the new flattened array.\n     * @example\n     *\n     * function duplicate(n) {\n     *   return [[[n, n]]];\n     * }\n     *\n     * _.flatMapDeep([1, 2], duplicate);\n     * // => [1, 1, 2, 2]\n     */\n    function flatMapDeep(collection, iteratee) {\n      return baseFlatten(map(collection, iteratee), INFINITY);\n    }\n\n    /**\n     * This method is like `_.flatMap` except that it recursively flattens the\n     * mapped results up to `depth` times.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.7.0\n     * @category Collection\n     * @param {Array|Object} collection The collection to iterate over.\n     * @param {Function} [iteratee=_.identity] The function invoked per iteration.\n     * @param {number} [depth=1] The maximum recursion depth.\n     * @returns {Array} Returns the new flattened array.\n     * @example\n     *\n     * function duplicate(n) {\n     *   return [[[n, n]]];\n     * }\n     *\n     * _.flatMapDepth([1, 2], duplicate, 2);\n     * // => [[1, 1], [2, 2]]\n     */\n    function flatMapDepth(collection, iteratee, depth) {\n      depth = depth === undefined ? 1 : toInteger(depth);\n      return baseFlatten(map(collection, iteratee), depth);\n    }\n\n    /**\n     * Iterates over elements of `collection` and invokes `iteratee` for each element.\n     * The iteratee is invoked with three arguments: (value, index|key, collection).\n     * Iteratee functions may exit iteration early by explicitly returning `false`.\n     *\n     * **Note:** As with other \"Collections\" methods, objects with a \"length\"\n     * property are iterated like arrays. To avoid this behavior use `_.forIn`\n     * or `_.forOwn` for object iteration.\n     *\n     * @static\n     * @memberOf _\n     * @since 0.1.0\n     * @alias each\n     * @category Collection\n     * @param {Array|Object} collection The collection to iterate over.\n     * @param {Function} [iteratee=_.identity] The function invoked per iteration.\n     * @returns {Array|Object} Returns `collection`.\n     * @see _.forEachRight\n     * @example\n     *\n     * _.forEach([1, 2], function(value) {\n     *   console.log(value);\n     * });\n     * // => Logs `1` then `2`.\n     *\n     * _.forEach({ 'a': 1, 'b': 2 }, function(value, key) {\n     *   console.log(key);\n     * });\n     * // => Logs 'a' then 'b' (iteration order is not guaranteed).\n     */\n    function forEach(collection, iteratee) {\n      var func = isArray(collection) ? arrayEach : baseEach;\n      return func(collection, getIteratee(iteratee, 3));\n    }\n\n    /**\n     * This method is like `_.forEach` except that it iterates over elements of\n     * `collection` from right to left.\n     *\n     * @static\n     * @memberOf _\n     * @since 2.0.0\n     * @alias eachRight\n     * @category Collection\n     * @param {Array|Object} collection The collection to iterate over.\n     * @param {Function} [iteratee=_.identity] The function invoked per iteration.\n     * @returns {Array|Object} Returns `collection`.\n     * @see _.forEach\n     * @example\n     *\n     * _.forEachRight([1, 2], function(value) {\n     *   console.log(value);\n     * });\n     * // => Logs `2` then `1`.\n     */\n    function forEachRight(collection, iteratee) {\n      var func = isArray(collection) ? arrayEachRight : baseEachRight;\n      return func(collection, getIteratee(iteratee, 3));\n    }\n\n    /**\n     * Creates an object composed of keys generated from the results of running\n     * each element of `collection` thru `iteratee`. The order of grouped values\n     * is determined by the order they occur in `collection`. The corresponding\n     * value of each key is an array of elements responsible for generating the\n     * key. The iteratee is invoked with one argument: (value).\n     *\n     * @static\n     * @memberOf _\n     * @since 0.1.0\n     * @category Collection\n     * @param {Array|Object} collection The collection to iterate over.\n     * @param {Function} [iteratee=_.identity] The iteratee to transform keys.\n     * @returns {Object} Returns the composed aggregate object.\n     * @example\n     *\n     * _.groupBy([6.1, 4.2, 6.3], Math.floor);\n     * // => { '4': [4.2], '6': [6.1, 6.3] }\n     *\n     * // The `_.property` iteratee shorthand.\n     * _.groupBy(['one', 'two', 'three'], 'length');\n     * // => { '3': ['one', 'two'], '5': ['three'] }\n     */\n    var groupBy = createAggregator(function(result, value, key) {\n      if (hasOwnProperty.call(result, key)) {\n        result[key].push(value);\n      } else {\n        baseAssignValue(result, key, [value]);\n      }\n    });\n\n    /**\n     * Checks if `value` is in `collection`. If `collection` is a string, it's\n     * checked for a substring of `value`, otherwise\n     * [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)\n     * is used for equality comparisons. If `fromIndex` is negative, it's used as\n     * the offset from the end of `collection`.\n     *\n     * @static\n     * @memberOf _\n     * @since 0.1.0\n     * @category Collection\n     * @param {Array|Object|string} collection The collection to inspect.\n     * @param {*} value The value to search for.\n     * @param {number} [fromIndex=0] The index to search from.\n     * @param- {Object} [guard] Enables use as an iteratee for methods like `_.reduce`.\n     * @returns {boolean} Returns `true` if `value` is found, else `false`.\n     * @example\n     *\n     * _.includes([1, 2, 3], 1);\n     * // => true\n     *\n     * _.includes([1, 2, 3], 1, 2);\n     * // => false\n     *\n     * _.includes({ 'a': 1, 'b': 2 }, 1);\n     * // => true\n     *\n     * _.includes('abcd', 'bc');\n     * // => true\n     */\n    function includes(collection, value, fromIndex, guard) {\n      collection = isArrayLike(collection) ? collection : values(collection);\n      fromIndex = (fromIndex && !guard) ? toInteger(fromIndex) : 0;\n\n      var length = collection.length;\n      if (fromIndex < 0) {\n        fromIndex = nativeMax(length + fromIndex, 0);\n      }\n      return isString(collection)\n        ? (fromIndex <= length && collection.indexOf(value, fromIndex) > -1)\n        : (!!length && baseIndexOf(collection, value, fromIndex) > -1);\n    }\n\n    /**\n     * Invokes the method at `path` of each element in `collection`, returning\n     * an array of the results of each invoked method. Any additional arguments\n     * are provided to each invoked method. If `path` is a function, it's invoked\n     * for, and `this` bound to, each element in `collection`.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Collection\n     * @param {Array|Object} collection The collection to iterate over.\n     * @param {Array|Function|string} path The path of the method to invoke or\n     *  the function invoked per iteration.\n     * @param {...*} [args] The arguments to invoke each method with.\n     * @returns {Array} Returns the array of results.\n     * @example\n     *\n     * _.invokeMap([[5, 1, 7], [3, 2, 1]], 'sort');\n     * // => [[1, 5, 7], [1, 2, 3]]\n     *\n     * _.invokeMap([123, 456], String.prototype.split, '');\n     * // => [['1', '2', '3'], ['4', '5', '6']]\n     */\n    var invokeMap = baseRest(function(collection, path, args) {\n      var index = -1,\n          isFunc = typeof path == 'function',\n          result = isArrayLike(collection) ? Array(collection.length) : [];\n\n      baseEach(collection, function(value) {\n        result[++index] = isFunc ? apply(path, value, args) : baseInvoke(value, path, args);\n      });\n      return result;\n    });\n\n    /**\n     * Creates an object composed of keys generated from the results of running\n     * each element of `collection` thru `iteratee`. The corresponding value of\n     * each key is the last element responsible for generating the key. The\n     * iteratee is invoked with one argument: (value).\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Collection\n     * @param {Array|Object} collection The collection to iterate over.\n     * @param {Function} [iteratee=_.identity] The iteratee to transform keys.\n     * @returns {Object} Returns the composed aggregate object.\n     * @example\n     *\n     * var array = [\n     *   { 'dir': 'left', 'code': 97 },\n     *   { 'dir': 'right', 'code': 100 }\n     * ];\n     *\n     * _.keyBy(array, function(o) {\n     *   return String.fromCharCode(o.code);\n     * });\n     * // => { 'a': { 'dir': 'left', 'code': 97 }, 'd': { 'dir': 'right', 'code': 100 } }\n     *\n     * _.keyBy(array, 'dir');\n     * // => { 'left': { 'dir': 'left', 'code': 97 }, 'right': { 'dir': 'right', 'code': 100 } }\n     */\n    var keyBy = createAggregator(function(result, value, key) {\n      baseAssignValue(result, key, value);\n    });\n\n    /**\n     * Creates an array of values by running each element in `collection` thru\n     * `iteratee`. The iteratee is invoked with three arguments:\n     * (value, index|key, collection).\n     *\n     * Many lodash methods are guarded to work as iteratees for methods like\n     * `_.every`, `_.filter`, `_.map`, `_.mapValues`, `_.reject`, and `_.some`.\n     *\n     * The guarded methods are:\n     * `ary`, `chunk`, `curry`, `curryRight`, `drop`, `dropRight`, `every`,\n     * `fill`, `invert`, `parseInt`, `random`, `range`, `rangeRight`, `repeat`,\n     * `sampleSize`, `slice`, `some`, `sortBy`, `split`, `take`, `takeRight`,\n     * `template`, `trim`, `trimEnd`, `trimStart`, and `words`\n     *\n     * @static\n     * @memberOf _\n     * @since 0.1.0\n     * @category Collection\n     * @param {Array|Object} collection The collection to iterate over.\n     * @param {Function} [iteratee=_.identity] The function invoked per iteration.\n     * @returns {Array} Returns the new mapped array.\n     * @example\n     *\n     * function square(n) {\n     *   return n * n;\n     * }\n     *\n     * _.map([4, 8], square);\n     * // => [16, 64]\n     *\n     * _.map({ 'a': 4, 'b': 8 }, square);\n     * // => [16, 64] (iteration order is not guaranteed)\n     *\n     * var users = [\n     *   { 'user': 'barney' },\n     *   { 'user': 'fred' }\n     * ];\n     *\n     * // The `_.property` iteratee shorthand.\n     * _.map(users, 'user');\n     * // => ['barney', 'fred']\n     */\n    function map(collection, iteratee) {\n      var func = isArray(collection) ? arrayMap : baseMap;\n      return func(collection, getIteratee(iteratee, 3));\n    }\n\n    /**\n     * This method is like `_.sortBy` except that it allows specifying the sort\n     * orders of the iteratees to sort by. If `orders` is unspecified, all values\n     * are sorted in ascending order. Otherwise, specify an order of \"desc\" for\n     * descending or \"asc\" for ascending sort order of corresponding values.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Collection\n     * @param {Array|Object} collection The collection to iterate over.\n     * @param {Array[]|Function[]|Object[]|string[]} [iteratees=[_.identity]]\n     *  The iteratees to sort by.\n     * @param {string[]} [orders] The sort orders of `iteratees`.\n     * @param- {Object} [guard] Enables use as an iteratee for methods like `_.reduce`.\n     * @returns {Array} Returns the new sorted array.\n     * @example\n     *\n     * var users = [\n     *   { 'user': 'fred',   'age': 48 },\n     *   { 'user': 'barney', 'age': 34 },\n     *   { 'user': 'fred',   'age': 40 },\n     *   { 'user': 'barney', 'age': 36 }\n     * ];\n     *\n     * // Sort by `user` in ascending order and by `age` in descending order.\n     * _.orderBy(users, ['user', 'age'], ['asc', 'desc']);\n     * // => objects for [['barney', 36], ['barney', 34], ['fred', 48], ['fred', 40]]\n     */\n    function orderBy(collection, iteratees, orders, guard) {\n      if (collection == null) {\n        return [];\n      }\n      if (!isArray(iteratees)) {\n        iteratees = iteratees == null ? [] : [iteratees];\n      }\n      orders = guard ? undefined : orders;\n      if (!isArray(orders)) {\n        orders = orders == null ? [] : [orders];\n      }\n      return baseOrderBy(collection, iteratees, orders);\n    }\n\n    /**\n     * Creates an array of elements split into two groups, the first of which\n     * contains elements `predicate` returns truthy for, the second of which\n     * contains elements `predicate` returns falsey for. The predicate is\n     * invoked with one argument: (value).\n     *\n     * @static\n     * @memberOf _\n     * @since 3.0.0\n     * @category Collection\n     * @param {Array|Object} collection The collection to iterate over.\n     * @param {Function} [predicate=_.identity] The function invoked per iteration.\n     * @returns {Array} Returns the array of grouped elements.\n     * @example\n     *\n     * var users = [\n     *   { 'user': 'barney',  'age': 36, 'active': false },\n     *   { 'user': 'fred',    'age': 40, 'active': true },\n     *   { 'user': 'pebbles', 'age': 1,  'active': false }\n     * ];\n     *\n     * _.partition(users, function(o) { return o.active; });\n     * // => objects for [['fred'], ['barney', 'pebbles']]\n     *\n     * // The `_.matches` iteratee shorthand.\n     * _.partition(users, { 'age': 1, 'active': false });\n     * // => objects for [['pebbles'], ['barney', 'fred']]\n     *\n     * // The `_.matchesProperty` iteratee shorthand.\n     * _.partition(users, ['active', false]);\n     * // => objects for [['barney', 'pebbles'], ['fred']]\n     *\n     * // The `_.property` iteratee shorthand.\n     * _.partition(users, 'active');\n     * // => objects for [['fred'], ['barney', 'pebbles']]\n     */\n    var partition = createAggregator(function(result, value, key) {\n      result[key ? 0 : 1].push(value);\n    }, function() { return [[], []]; });\n\n    /**\n     * Reduces `collection` to a value which is the accumulated result of running\n     * each element in `collection` thru `iteratee`, where each successive\n     * invocation is supplied the return value of the previous. If `accumulator`\n     * is not given, the first element of `collection` is used as the initial\n     * value. The iteratee is invoked with four arguments:\n     * (accumulator, value, index|key, collection).\n     *\n     * Many lodash methods are guarded to work as iteratees for methods like\n     * `_.reduce`, `_.reduceRight`, and `_.transform`.\n     *\n     * The guarded methods are:\n     * `assign`, `defaults`, `defaultsDeep`, `includes`, `merge`, `orderBy`,\n     * and `sortBy`\n     *\n     * @static\n     * @memberOf _\n     * @since 0.1.0\n     * @category Collection\n     * @param {Array|Object} collection The collection to iterate over.\n     * @param {Function} [iteratee=_.identity] The function invoked per iteration.\n     * @param {*} [accumulator] The initial value.\n     * @returns {*} Returns the accumulated value.\n     * @see _.reduceRight\n     * @example\n     *\n     * _.reduce([1, 2], function(sum, n) {\n     *   return sum + n;\n     * }, 0);\n     * // => 3\n     *\n     * _.reduce({ 'a': 1, 'b': 2, 'c': 1 }, function(result, value, key) {\n     *   (result[value] || (result[value] = [])).push(key);\n     *   return result;\n     * }, {});\n     * // => { '1': ['a', 'c'], '2': ['b'] } (iteration order is not guaranteed)\n     */\n    function reduce(collection, iteratee, accumulator) {\n      var func = isArray(collection) ? arrayReduce : baseReduce,\n          initAccum = arguments.length < 3;\n\n      return func(collection, getIteratee(iteratee, 4), accumulator, initAccum, baseEach);\n    }\n\n    /**\n     * This method is like `_.reduce` except that it iterates over elements of\n     * `collection` from right to left.\n     *\n     * @static\n     * @memberOf _\n     * @since 0.1.0\n     * @category Collection\n     * @param {Array|Object} collection The collection to iterate over.\n     * @param {Function} [iteratee=_.identity] The function invoked per iteration.\n     * @param {*} [accumulator] The initial value.\n     * @returns {*} Returns the accumulated value.\n     * @see _.reduce\n     * @example\n     *\n     * var array = [[0, 1], [2, 3], [4, 5]];\n     *\n     * _.reduceRight(array, function(flattened, other) {\n     *   return flattened.concat(other);\n     * }, []);\n     * // => [4, 5, 2, 3, 0, 1]\n     */\n    function reduceRight(collection, iteratee, accumulator) {\n      var func = isArray(collection) ? arrayReduceRight : baseReduce,\n          initAccum = arguments.length < 3;\n\n      return func(collection, getIteratee(iteratee, 4), accumulator, initAccum, baseEachRight);\n    }\n\n    /**\n     * The opposite of `_.filter`; this method returns the elements of `collection`\n     * that `predicate` does **not** return truthy for.\n     *\n     * @static\n     * @memberOf _\n     * @since 0.1.0\n     * @category Collection\n     * @param {Array|Object} collection The collection to iterate over.\n     * @param {Function} [predicate=_.identity] The function invoked per iteration.\n     * @returns {Array} Returns the new filtered array.\n     * @see _.filter\n     * @example\n     *\n     * var users = [\n     *   { 'user': 'barney', 'age': 36, 'active': false },\n     *   { 'user': 'fred',   'age': 40, 'active': true }\n     * ];\n     *\n     * _.reject(users, function(o) { return !o.active; });\n     * // => objects for ['fred']\n     *\n     * // The `_.matches` iteratee shorthand.\n     * _.reject(users, { 'age': 40, 'active': true });\n     * // => objects for ['barney']\n     *\n     * // The `_.matchesProperty` iteratee shorthand.\n     * _.reject(users, ['active', false]);\n     * // => objects for ['fred']\n     *\n     * // The `_.property` iteratee shorthand.\n     * _.reject(users, 'active');\n     * // => objects for ['barney']\n     */\n    function reject(collection, predicate) {\n      var func = isArray(collection) ? arrayFilter : baseFilter;\n      return func(collection, negate(getIteratee(predicate, 3)));\n    }\n\n    /**\n     * Gets a random element from `collection`.\n     *\n     * @static\n     * @memberOf _\n     * @since 2.0.0\n     * @category Collection\n     * @param {Array|Object} collection The collection to sample.\n     * @returns {*} Returns the random element.\n     * @example\n     *\n     * _.sample([1, 2, 3, 4]);\n     * // => 2\n     */\n    function sample(collection) {\n      var func = isArray(collection) ? arraySample : baseSample;\n      return func(collection);\n    }\n\n    /**\n     * Gets `n` random elements at unique keys from `collection` up to the\n     * size of `collection`.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Collection\n     * @param {Array|Object} collection The collection to sample.\n     * @param {number} [n=1] The number of elements to sample.\n     * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.\n     * @returns {Array} Returns the random elements.\n     * @example\n     *\n     * _.sampleSize([1, 2, 3], 2);\n     * // => [3, 1]\n     *\n     * _.sampleSize([1, 2, 3], 4);\n     * // => [2, 3, 1]\n     */\n    function sampleSize(collection, n, guard) {\n      if ((guard ? isIterateeCall(collection, n, guard) : n === undefined)) {\n        n = 1;\n      } else {\n        n = toInteger(n);\n      }\n      var func = isArray(collection) ? arraySampleSize : baseSampleSize;\n      return func(collection, n);\n    }\n\n    /**\n     * Creates an array of shuffled values, using a version of the\n     * [Fisher-Yates shuffle](https://en.wikipedia.org/wiki/Fisher-Yates_shuffle).\n     *\n     * @static\n     * @memberOf _\n     * @since 0.1.0\n     * @category Collection\n     * @param {Array|Object} collection The collection to shuffle.\n     * @returns {Array} Returns the new shuffled array.\n     * @example\n     *\n     * _.shuffle([1, 2, 3, 4]);\n     * // => [4, 1, 3, 2]\n     */\n    function shuffle(collection) {\n      var func = isArray(collection) ? arrayShuffle : baseShuffle;\n      return func(collection);\n    }\n\n    /**\n     * Gets the size of `collection` by returning its length for array-like\n     * values or the number of own enumerable string keyed properties for objects.\n     *\n     * @static\n     * @memberOf _\n     * @since 0.1.0\n     * @category Collection\n     * @param {Array|Object|string} collection The collection to inspect.\n     * @returns {number} Returns the collection size.\n     * @example\n     *\n     * _.size([1, 2, 3]);\n     * // => 3\n     *\n     * _.size({ 'a': 1, 'b': 2 });\n     * // => 2\n     *\n     * _.size('pebbles');\n     * // => 7\n     */\n    function size(collection) {\n      if (collection == null) {\n        return 0;\n      }\n      if (isArrayLike(collection)) {\n        return isString(collection) ? stringSize(collection) : collection.length;\n      }\n      var tag = getTag(collection);\n      if (tag == mapTag || tag == setTag) {\n        return collection.size;\n      }\n      return baseKeys(collection).length;\n    }\n\n    /**\n     * Checks if `predicate` returns truthy for **any** element of `collection`.\n     * Iteration is stopped once `predicate` returns truthy. The predicate is\n     * invoked with three arguments: (value, index|key, collection).\n     *\n     * @static\n     * @memberOf _\n     * @since 0.1.0\n     * @category Collection\n     * @param {Array|Object} collection The collection to iterate over.\n     * @param {Function} [predicate=_.identity] The function invoked per iteration.\n     * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.\n     * @returns {boolean} Returns `true` if any element passes the predicate check,\n     *  else `false`.\n     * @example\n     *\n     * _.some([null, 0, 'yes', false], Boolean);\n     * // => true\n     *\n     * var users = [\n     *   { 'user': 'barney', 'active': true },\n     *   { 'user': 'fred',   'active': false }\n     * ];\n     *\n     * // The `_.matches` iteratee shorthand.\n     * _.some(users, { 'user': 'barney', 'active': false });\n     * // => false\n     *\n     * // The `_.matchesProperty` iteratee shorthand.\n     * _.some(users, ['active', false]);\n     * // => true\n     *\n     * // The `_.property` iteratee shorthand.\n     * _.some(users, 'active');\n     * // => true\n     */\n    function some(collection, predicate, guard) {\n      var func = isArray(collection) ? arraySome : baseSome;\n      if (guard && isIterateeCall(collection, predicate, guard)) {\n        predicate = undefined;\n      }\n      return func(collection, getIteratee(predicate, 3));\n    }\n\n    /**\n     * Creates an array of elements, sorted in ascending order by the results of\n     * running each element in a collection thru each iteratee. This method\n     * performs a stable sort, that is, it preserves the original sort order of\n     * equal elements. The iteratees are invoked with one argument: (value).\n     *\n     * @static\n     * @memberOf _\n     * @since 0.1.0\n     * @category Collection\n     * @param {Array|Object} collection The collection to iterate over.\n     * @param {...(Function|Function[])} [iteratees=[_.identity]]\n     *  The iteratees to sort by.\n     * @returns {Array} Returns the new sorted array.\n     * @example\n     *\n     * var users = [\n     *   { 'user': 'fred',   'age': 48 },\n     *   { 'user': 'barney', 'age': 36 },\n     *   { 'user': 'fred',   'age': 30 },\n     *   { 'user': 'barney', 'age': 34 }\n     * ];\n     *\n     * _.sortBy(users, [function(o) { return o.user; }]);\n     * // => objects for [['barney', 36], ['barney', 34], ['fred', 48], ['fred', 30]]\n     *\n     * _.sortBy(users, ['user', 'age']);\n     * // => objects for [['barney', 34], ['barney', 36], ['fred', 30], ['fred', 48]]\n     */\n    var sortBy = baseRest(function(collection, iteratees) {\n      if (collection == null) {\n        return [];\n      }\n      var length = iteratees.length;\n      if (length > 1 && isIterateeCall(collection, iteratees[0], iteratees[1])) {\n        iteratees = [];\n      } else if (length > 2 && isIterateeCall(iteratees[0], iteratees[1], iteratees[2])) {\n        iteratees = [iteratees[0]];\n      }\n      return baseOrderBy(collection, baseFlatten(iteratees, 1), []);\n    });\n\n    /*------------------------------------------------------------------------*/\n\n    /**\n     * Gets the timestamp of the number of milliseconds that have elapsed since\n     * the Unix epoch (1 January 1970 00:00:00 UTC).\n     *\n     * @static\n     * @memberOf _\n     * @since 2.4.0\n     * @category Date\n     * @returns {number} Returns the timestamp.\n     * @example\n     *\n     * _.defer(function(stamp) {\n     *   console.log(_.now() - stamp);\n     * }, _.now());\n     * // => Logs the number of milliseconds it took for the deferred invocation.\n     */\n    var now = ctxNow || function() {\n      return root.Date.now();\n    };\n\n    /*------------------------------------------------------------------------*/\n\n    /**\n     * The opposite of `_.before`; this method creates a function that invokes\n     * `func` once it's called `n` or more times.\n     *\n     * @static\n     * @memberOf _\n     * @since 0.1.0\n     * @category Function\n     * @param {number} n The number of calls before `func` is invoked.\n     * @param {Function} func The function to restrict.\n     * @returns {Function} Returns the new restricted function.\n     * @example\n     *\n     * var saves = ['profile', 'settings'];\n     *\n     * var done = _.after(saves.length, function() {\n     *   console.log('done saving!');\n     * });\n     *\n     * _.forEach(saves, function(type) {\n     *   asyncSave({ 'type': type, 'complete': done });\n     * });\n     * // => Logs 'done saving!' after the two async saves have completed.\n     */\n    function after(n, func) {\n      if (typeof func != 'function') {\n        throw new TypeError(FUNC_ERROR_TEXT);\n      }\n      n = toInteger(n);\n      return function() {\n        if (--n < 1) {\n          return func.apply(this, arguments);\n        }\n      };\n    }\n\n    /**\n     * Creates a function that invokes `func`, with up to `n` arguments,\n     * ignoring any additional arguments.\n     *\n     * @static\n     * @memberOf _\n     * @since 3.0.0\n     * @category Function\n     * @param {Function} func The function to cap arguments for.\n     * @param {number} [n=func.length] The arity cap.\n     * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.\n     * @returns {Function} Returns the new capped function.\n     * @example\n     *\n     * _.map(['6', '8', '10'], _.ary(parseInt, 1));\n     * // => [6, 8, 10]\n     */\n    function ary(func, n, guard) {\n      n = guard ? undefined : n;\n      n = (func && n == null) ? func.length : n;\n      return createWrap(func, WRAP_ARY_FLAG, undefined, undefined, undefined, undefined, n);\n    }\n\n    /**\n     * Creates a function that invokes `func`, with the `this` binding and arguments\n     * of the created function, while it's called less than `n` times. Subsequent\n     * calls to the created function return the result of the last `func` invocation.\n     *\n     * @static\n     * @memberOf _\n     * @since 3.0.0\n     * @category Function\n     * @param {number} n The number of calls at which `func` is no longer invoked.\n     * @param {Function} func The function to restrict.\n     * @returns {Function} Returns the new restricted function.\n     * @example\n     *\n     * jQuery(element).on('click', _.before(5, addContactToList));\n     * // => Allows adding up to 4 contacts to the list.\n     */\n    function before(n, func) {\n      var result;\n      if (typeof func != 'function') {\n        throw new TypeError(FUNC_ERROR_TEXT);\n      }\n      n = toInteger(n);\n      return function() {\n        if (--n > 0) {\n          result = func.apply(this, arguments);\n        }\n        if (n <= 1) {\n          func = undefined;\n        }\n        return result;\n      };\n    }\n\n    /**\n     * Creates a function that invokes `func` with the `this` binding of `thisArg`\n     * and `partials` prepended to the arguments it receives.\n     *\n     * The `_.bind.placeholder` value, which defaults to `_` in monolithic builds,\n     * may be used as a placeholder for partially applied arguments.\n     *\n     * **Note:** Unlike native `Function#bind`, this method doesn't set the \"length\"\n     * property of bound functions.\n     *\n     * @static\n     * @memberOf _\n     * @since 0.1.0\n     * @category Function\n     * @param {Function} func The function to bind.\n     * @param {*} thisArg The `this` binding of `func`.\n     * @param {...*} [partials] The arguments to be partially applied.\n     * @returns {Function} Returns the new bound function.\n     * @example\n     *\n     * function greet(greeting, punctuation) {\n     *   return greeting + ' ' + this.user + punctuation;\n     * }\n     *\n     * var object = { 'user': 'fred' };\n     *\n     * var bound = _.bind(greet, object, 'hi');\n     * bound('!');\n     * // => 'hi fred!'\n     *\n     * // Bound with placeholders.\n     * var bound = _.bind(greet, object, _, '!');\n     * bound('hi');\n     * // => 'hi fred!'\n     */\n    var bind = baseRest(function(func, thisArg, partials) {\n      var bitmask = WRAP_BIND_FLAG;\n      if (partials.length) {\n        var holders = replaceHolders(partials, getHolder(bind));\n        bitmask |= WRAP_PARTIAL_FLAG;\n      }\n      return createWrap(func, bitmask, thisArg, partials, holders);\n    });\n\n    /**\n     * Creates a function that invokes the method at `object[key]` with `partials`\n     * prepended to the arguments it receives.\n     *\n     * This method differs from `_.bind` by allowing bound functions to reference\n     * methods that may be redefined or don't yet exist. See\n     * [Peter Michaux's article](http://peter.michaux.ca/articles/lazy-function-definition-pattern)\n     * for more details.\n     *\n     * The `_.bindKey.placeholder` value, which defaults to `_` in monolithic\n     * builds, may be used as a placeholder for partially applied arguments.\n     *\n     * @static\n     * @memberOf _\n     * @since 0.10.0\n     * @category Function\n     * @param {Object} object The object to invoke the method on.\n     * @param {string} key The key of the method.\n     * @param {...*} [partials] The arguments to be partially applied.\n     * @returns {Function} Returns the new bound function.\n     * @example\n     *\n     * var object = {\n     *   'user': 'fred',\n     *   'greet': function(greeting, punctuation) {\n     *     return greeting + ' ' + this.user + punctuation;\n     *   }\n     * };\n     *\n     * var bound = _.bindKey(object, 'greet', 'hi');\n     * bound('!');\n     * // => 'hi fred!'\n     *\n     * object.greet = function(greeting, punctuation) {\n     *   return greeting + 'ya ' + this.user + punctuation;\n     * };\n     *\n     * bound('!');\n     * // => 'hiya fred!'\n     *\n     * // Bound with placeholders.\n     * var bound = _.bindKey(object, 'greet', _, '!');\n     * bound('hi');\n     * // => 'hiya fred!'\n     */\n    var bindKey = baseRest(function(object, key, partials) {\n      var bitmask = WRAP_BIND_FLAG | WRAP_BIND_KEY_FLAG;\n      if (partials.length) {\n        var holders = replaceHolders(partials, getHolder(bindKey));\n        bitmask |= WRAP_PARTIAL_FLAG;\n      }\n      return createWrap(key, bitmask, object, partials, holders);\n    });\n\n    /**\n     * Creates a function that accepts arguments of `func` and either invokes\n     * `func` returning its result, if at least `arity` number of arguments have\n     * been provided, or returns a function that accepts the remaining `func`\n     * arguments, and so on. The arity of `func` may be specified if `func.length`\n     * is not sufficient.\n     *\n     * The `_.curry.placeholder` value, which defaults to `_` in monolithic builds,\n     * may be used as a placeholder for provided arguments.\n     *\n     * **Note:** This method doesn't set the \"length\" property of curried functions.\n     *\n     * @static\n     * @memberOf _\n     * @since 2.0.0\n     * @category Function\n     * @param {Function} func The function to curry.\n     * @param {number} [arity=func.length] The arity of `func`.\n     * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.\n     * @returns {Function} Returns the new curried function.\n     * @example\n     *\n     * var abc = function(a, b, c) {\n     *   return [a, b, c];\n     * };\n     *\n     * var curried = _.curry(abc);\n     *\n     * curried(1)(2)(3);\n     * // => [1, 2, 3]\n     *\n     * curried(1, 2)(3);\n     * // => [1, 2, 3]\n     *\n     * curried(1, 2, 3);\n     * // => [1, 2, 3]\n     *\n     * // Curried with placeholders.\n     * curried(1)(_, 3)(2);\n     * // => [1, 2, 3]\n     */\n    function curry(func, arity, guard) {\n      arity = guard ? undefined : arity;\n      var result = createWrap(func, WRAP_CURRY_FLAG, undefined, undefined, undefined, undefined, undefined, arity);\n      result.placeholder = curry.placeholder;\n      return result;\n    }\n\n    /**\n     * This method is like `_.curry` except that arguments are applied to `func`\n     * in the manner of `_.partialRight` instead of `_.partial`.\n     *\n     * The `_.curryRight.placeholder` value, which defaults to `_` in monolithic\n     * builds, may be used as a placeholder for provided arguments.\n     *\n     * **Note:** This method doesn't set the \"length\" property of curried functions.\n     *\n     * @static\n     * @memberOf _\n     * @since 3.0.0\n     * @category Function\n     * @param {Function} func The function to curry.\n     * @param {number} [arity=func.length] The arity of `func`.\n     * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.\n     * @returns {Function} Returns the new curried function.\n     * @example\n     *\n     * var abc = function(a, b, c) {\n     *   return [a, b, c];\n     * };\n     *\n     * var curried = _.curryRight(abc);\n     *\n     * curried(3)(2)(1);\n     * // => [1, 2, 3]\n     *\n     * curried(2, 3)(1);\n     * // => [1, 2, 3]\n     *\n     * curried(1, 2, 3);\n     * // => [1, 2, 3]\n     *\n     * // Curried with placeholders.\n     * curried(3)(1, _)(2);\n     * // => [1, 2, 3]\n     */\n    function curryRight(func, arity, guard) {\n      arity = guard ? undefined : arity;\n      var result = createWrap(func, WRAP_CURRY_RIGHT_FLAG, undefined, undefined, undefined, undefined, undefined, arity);\n      result.placeholder = curryRight.placeholder;\n      return result;\n    }\n\n    /**\n     * Creates a debounced function that delays invoking `func` until after `wait`\n     * milliseconds have elapsed since the last time the debounced function was\n     * invoked. The debounced function comes with a `cancel` method to cancel\n     * delayed `func` invocations and a `flush` method to immediately invoke them.\n     * Provide `options` to indicate whether `func` should be invoked on the\n     * leading and/or trailing edge of the `wait` timeout. The `func` is invoked\n     * with the last arguments provided to the debounced function. Subsequent\n     * calls to the debounced function return the result of the last `func`\n     * invocation.\n     *\n     * **Note:** If `leading` and `trailing` options are `true`, `func` is\n     * invoked on the trailing edge of the timeout only if the debounced function\n     * is invoked more than once during the `wait` timeout.\n     *\n     * If `wait` is `0` and `leading` is `false`, `func` invocation is deferred\n     * until to the next tick, similar to `setTimeout` with a timeout of `0`.\n     *\n     * See [David Corbacho's article](https://css-tricks.com/debouncing-throttling-explained-examples/)\n     * for details over the differences between `_.debounce` and `_.throttle`.\n     *\n     * @static\n     * @memberOf _\n     * @since 0.1.0\n     * @category Function\n     * @param {Function} func The function to debounce.\n     * @param {number} [wait=0] The number of milliseconds to delay.\n     * @param {Object} [options={}] The options object.\n     * @param {boolean} [options.leading=false]\n     *  Specify invoking on the leading edge of the timeout.\n     * @param {number} [options.maxWait]\n     *  The maximum time `func` is allowed to be delayed before it's invoked.\n     * @param {boolean} [options.trailing=true]\n     *  Specify invoking on the trailing edge of the timeout.\n     * @returns {Function} Returns the new debounced function.\n     * @example\n     *\n     * // Avoid costly calculations while the window size is in flux.\n     * jQuery(window).on('resize', _.debounce(calculateLayout, 150));\n     *\n     * // Invoke `sendMail` when clicked, debouncing subsequent calls.\n     * jQuery(element).on('click', _.debounce(sendMail, 300, {\n     *   'leading': true,\n     *   'trailing': false\n     * }));\n     *\n     * // Ensure `batchLog` is invoked once after 1 second of debounced calls.\n     * var debounced = _.debounce(batchLog, 250, { 'maxWait': 1000 });\n     * var source = new EventSource('/stream');\n     * jQuery(source).on('message', debounced);\n     *\n     * // Cancel the trailing debounced invocation.\n     * jQuery(window).on('popstate', debounced.cancel);\n     */\n    function debounce(func, wait, options) {\n      var lastArgs,\n          lastThis,\n          maxWait,\n          result,\n          timerId,\n          lastCallTime,\n          lastInvokeTime = 0,\n          leading = false,\n          maxing = false,\n          trailing = true;\n\n      if (typeof func != 'function') {\n        throw new TypeError(FUNC_ERROR_TEXT);\n      }\n      wait = toNumber(wait) || 0;\n      if (isObject(options)) {\n        leading = !!options.leading;\n        maxing = 'maxWait' in options;\n        maxWait = maxing ? nativeMax(toNumber(options.maxWait) || 0, wait) : maxWait;\n        trailing = 'trailing' in options ? !!options.trailing : trailing;\n      }\n\n      function invokeFunc(time) {\n        var args = lastArgs,\n            thisArg = lastThis;\n\n        lastArgs = lastThis = undefined;\n        lastInvokeTime = time;\n        result = func.apply(thisArg, args);\n        return result;\n      }\n\n      function leadingEdge(time) {\n        // Reset any `maxWait` timer.\n        lastInvokeTime = time;\n        // Start the timer for the trailing edge.\n        timerId = setTimeout(timerExpired, wait);\n        // Invoke the leading edge.\n        return leading ? invokeFunc(time) : result;\n      }\n\n      function remainingWait(time) {\n        var timeSinceLastCall = time - lastCallTime,\n            timeSinceLastInvoke = time - lastInvokeTime,\n            timeWaiting = wait - timeSinceLastCall;\n\n        return maxing\n          ? nativeMin(timeWaiting, maxWait - timeSinceLastInvoke)\n          : timeWaiting;\n      }\n\n      function shouldInvoke(time) {\n        var timeSinceLastCall = time - lastCallTime,\n            timeSinceLastInvoke = time - lastInvokeTime;\n\n        // Either this is the first call, activity has stopped and we're at the\n        // trailing edge, the system time has gone backwards and we're treating\n        // it as the trailing edge, or we've hit the `maxWait` limit.\n        return (lastCallTime === undefined || (timeSinceLastCall >= wait) ||\n          (timeSinceLastCall < 0) || (maxing && timeSinceLastInvoke >= maxWait));\n      }\n\n      function timerExpired() {\n        var time = now();\n        if (shouldInvoke(time)) {\n          return trailingEdge(time);\n        }\n        // Restart the timer.\n        timerId = setTimeout(timerExpired, remainingWait(time));\n      }\n\n      function trailingEdge(time) {\n        timerId = undefined;\n\n        // Only invoke if we have `lastArgs` which means `func` has been\n        // debounced at least once.\n        if (trailing && lastArgs) {\n          return invokeFunc(time);\n        }\n        lastArgs = lastThis = undefined;\n        return result;\n      }\n\n      function cancel() {\n        if (timerId !== undefined) {\n          clearTimeout(timerId);\n        }\n        lastInvokeTime = 0;\n        lastArgs = lastCallTime = lastThis = timerId = undefined;\n      }\n\n      function flush() {\n        return timerId === undefined ? result : trailingEdge(now());\n      }\n\n      function debounced() {\n        var time = now(),\n            isInvoking = shouldInvoke(time);\n\n        lastArgs = arguments;\n        lastThis = this;\n        lastCallTime = time;\n\n        if (isInvoking) {\n          if (timerId === undefined) {\n            return leadingEdge(lastCallTime);\n          }\n          if (maxing) {\n            // Handle invocations in a tight loop.\n            clearTimeout(timerId);\n            timerId = setTimeout(timerExpired, wait);\n            return invokeFunc(lastCallTime);\n          }\n        }\n        if (timerId === undefined) {\n          timerId = setTimeout(timerExpired, wait);\n        }\n        return result;\n      }\n      debounced.cancel = cancel;\n      debounced.flush = flush;\n      return debounced;\n    }\n\n    /**\n     * Defers invoking the `func` until the current call stack has cleared. Any\n     * additional arguments are provided to `func` when it's invoked.\n     *\n     * @static\n     * @memberOf _\n     * @since 0.1.0\n     * @category Function\n     * @param {Function} func The function to defer.\n     * @param {...*} [args] The arguments to invoke `func` with.\n     * @returns {number} Returns the timer id.\n     * @example\n     *\n     * _.defer(function(text) {\n     *   console.log(text);\n     * }, 'deferred');\n     * // => Logs 'deferred' after one millisecond.\n     */\n    var defer = baseRest(function(func, args) {\n      return baseDelay(func, 1, args);\n    });\n\n    /**\n     * Invokes `func` after `wait` milliseconds. Any additional arguments are\n     * provided to `func` when it's invoked.\n     *\n     * @static\n     * @memberOf _\n     * @since 0.1.0\n     * @category Function\n     * @param {Function} func The function to delay.\n     * @param {number} wait The number of milliseconds to delay invocation.\n     * @param {...*} [args] The arguments to invoke `func` with.\n     * @returns {number} Returns the timer id.\n     * @example\n     *\n     * _.delay(function(text) {\n     *   console.log(text);\n     * }, 1000, 'later');\n     * // => Logs 'later' after one second.\n     */\n    var delay = baseRest(function(func, wait, args) {\n      return baseDelay(func, toNumber(wait) || 0, args);\n    });\n\n    /**\n     * Creates a function that invokes `func` with arguments reversed.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Function\n     * @param {Function} func The function to flip arguments for.\n     * @returns {Function} Returns the new flipped function.\n     * @example\n     *\n     * var flipped = _.flip(function() {\n     *   return _.toArray(arguments);\n     * });\n     *\n     * flipped('a', 'b', 'c', 'd');\n     * // => ['d', 'c', 'b', 'a']\n     */\n    function flip(func) {\n      return createWrap(func, WRAP_FLIP_FLAG);\n    }\n\n    /**\n     * Creates a function that memoizes the result of `func`. If `resolver` is\n     * provided, it determines the cache key for storing the result based on the\n     * arguments provided to the memoized function. By default, the first argument\n     * provided to the memoized function is used as the map cache key. The `func`\n     * is invoked with the `this` binding of the memoized function.\n     *\n     * **Note:** The cache is exposed as the `cache` property on the memoized\n     * function. Its creation may be customized by replacing the `_.memoize.Cache`\n     * constructor with one whose instances implement the\n     * [`Map`](http://ecma-international.org/ecma-262/7.0/#sec-properties-of-the-map-prototype-object)\n     * method interface of `clear`, `delete`, `get`, `has`, and `set`.\n     *\n     * @static\n     * @memberOf _\n     * @since 0.1.0\n     * @category Function\n     * @param {Function} func The function to have its output memoized.\n     * @param {Function} [resolver] The function to resolve the cache key.\n     * @returns {Function} Returns the new memoized function.\n     * @example\n     *\n     * var object = { 'a': 1, 'b': 2 };\n     * var other = { 'c': 3, 'd': 4 };\n     *\n     * var values = _.memoize(_.values);\n     * values(object);\n     * // => [1, 2]\n     *\n     * values(other);\n     * // => [3, 4]\n     *\n     * object.a = 2;\n     * values(object);\n     * // => [1, 2]\n     *\n     * // Modify the result cache.\n     * values.cache.set(object, ['a', 'b']);\n     * values(object);\n     * // => ['a', 'b']\n     *\n     * // Replace `_.memoize.Cache`.\n     * _.memoize.Cache = WeakMap;\n     */\n    function memoize(func, resolver) {\n      if (typeof func != 'function' || (resolver != null && typeof resolver != 'function')) {\n        throw new TypeError(FUNC_ERROR_TEXT);\n      }\n      var memoized = function() {\n        var args = arguments,\n            key = resolver ? resolver.apply(this, args) : args[0],\n            cache = memoized.cache;\n\n        if (cache.has(key)) {\n          return cache.get(key);\n        }\n        var result = func.apply(this, args);\n        memoized.cache = cache.set(key, result) || cache;\n        return result;\n      };\n      memoized.cache = new (memoize.Cache || MapCache);\n      return memoized;\n    }\n\n    // Expose `MapCache`.\n    memoize.Cache = MapCache;\n\n    /**\n     * Creates a function that negates the result of the predicate `func`. The\n     * `func` predicate is invoked with the `this` binding and arguments of the\n     * created function.\n     *\n     * @static\n     * @memberOf _\n     * @since 3.0.0\n     * @category Function\n     * @param {Function} predicate The predicate to negate.\n     * @returns {Function} Returns the new negated function.\n     * @example\n     *\n     * function isEven(n) {\n     *   return n % 2 == 0;\n     * }\n     *\n     * _.filter([1, 2, 3, 4, 5, 6], _.negate(isEven));\n     * // => [1, 3, 5]\n     */\n    function negate(predicate) {\n      if (typeof predicate != 'function') {\n        throw new TypeError(FUNC_ERROR_TEXT);\n      }\n      return function() {\n        var args = arguments;\n        switch (args.length) {\n          case 0: return !predicate.call(this);\n          case 1: return !predicate.call(this, args[0]);\n          case 2: return !predicate.call(this, args[0], args[1]);\n          case 3: return !predicate.call(this, args[0], args[1], args[2]);\n        }\n        return !predicate.apply(this, args);\n      };\n    }\n\n    /**\n     * Creates a function that is restricted to invoking `func` once. Repeat calls\n     * to the function return the value of the first invocation. The `func` is\n     * invoked with the `this` binding and arguments of the created function.\n     *\n     * @static\n     * @memberOf _\n     * @since 0.1.0\n     * @category Function\n     * @param {Function} func The function to restrict.\n     * @returns {Function} Returns the new restricted function.\n     * @example\n     *\n     * var initialize = _.once(createApplication);\n     * initialize();\n     * initialize();\n     * // => `createApplication` is invoked once\n     */\n    function once(func) {\n      return before(2, func);\n    }\n\n    /**\n     * Creates a function that invokes `func` with its arguments transformed.\n     *\n     * @static\n     * @since 4.0.0\n     * @memberOf _\n     * @category Function\n     * @param {Function} func The function to wrap.\n     * @param {...(Function|Function[])} [transforms=[_.identity]]\n     *  The argument transforms.\n     * @returns {Function} Returns the new function.\n     * @example\n     *\n     * function doubled(n) {\n     *   return n * 2;\n     * }\n     *\n     * function square(n) {\n     *   return n * n;\n     * }\n     *\n     * var func = _.overArgs(function(x, y) {\n     *   return [x, y];\n     * }, [square, doubled]);\n     *\n     * func(9, 3);\n     * // => [81, 6]\n     *\n     * func(10, 5);\n     * // => [100, 10]\n     */\n    var overArgs = castRest(function(func, transforms) {\n      transforms = (transforms.length == 1 && isArray(transforms[0]))\n        ? arrayMap(transforms[0], baseUnary(getIteratee()))\n        : arrayMap(baseFlatten(transforms, 1), baseUnary(getIteratee()));\n\n      var funcsLength = transforms.length;\n      return baseRest(function(args) {\n        var index = -1,\n            length = nativeMin(args.length, funcsLength);\n\n        while (++index < length) {\n          args[index] = transforms[index].call(this, args[index]);\n        }\n        return apply(func, this, args);\n      });\n    });\n\n    /**\n     * Creates a function that invokes `func` with `partials` prepended to the\n     * arguments it receives. This method is like `_.bind` except it does **not**\n     * alter the `this` binding.\n     *\n     * The `_.partial.placeholder` value, which defaults to `_` in monolithic\n     * builds, may be used as a placeholder for partially applied arguments.\n     *\n     * **Note:** This method doesn't set the \"length\" property of partially\n     * applied functions.\n     *\n     * @static\n     * @memberOf _\n     * @since 0.2.0\n     * @category Function\n     * @param {Function} func The function to partially apply arguments to.\n     * @param {...*} [partials] The arguments to be partially applied.\n     * @returns {Function} Returns the new partially applied function.\n     * @example\n     *\n     * function greet(greeting, name) {\n     *   return greeting + ' ' + name;\n     * }\n     *\n     * var sayHelloTo = _.partial(greet, 'hello');\n     * sayHelloTo('fred');\n     * // => 'hello fred'\n     *\n     * // Partially applied with placeholders.\n     * var greetFred = _.partial(greet, _, 'fred');\n     * greetFred('hi');\n     * // => 'hi fred'\n     */\n    var partial = baseRest(function(func, partials) {\n      var holders = replaceHolders(partials, getHolder(partial));\n      return createWrap(func, WRAP_PARTIAL_FLAG, undefined, partials, holders);\n    });\n\n    /**\n     * This method is like `_.partial` except that partially applied arguments\n     * are appended to the arguments it receives.\n     *\n     * The `_.partialRight.placeholder` value, which defaults to `_` in monolithic\n     * builds, may be used as a placeholder for partially applied arguments.\n     *\n     * **Note:** This method doesn't set the \"length\" property of partially\n     * applied functions.\n     *\n     * @static\n     * @memberOf _\n     * @since 1.0.0\n     * @category Function\n     * @param {Function} func The function to partially apply arguments to.\n     * @param {...*} [partials] The arguments to be partially applied.\n     * @returns {Function} Returns the new partially applied function.\n     * @example\n     *\n     * function greet(greeting, name) {\n     *   return greeting + ' ' + name;\n     * }\n     *\n     * var greetFred = _.partialRight(greet, 'fred');\n     * greetFred('hi');\n     * // => 'hi fred'\n     *\n     * // Partially applied with placeholders.\n     * var sayHelloTo = _.partialRight(greet, 'hello', _);\n     * sayHelloTo('fred');\n     * // => 'hello fred'\n     */\n    var partialRight = baseRest(function(func, partials) {\n      var holders = replaceHolders(partials, getHolder(partialRight));\n      return createWrap(func, WRAP_PARTIAL_RIGHT_FLAG, undefined, partials, holders);\n    });\n\n    /**\n     * Creates a function that invokes `func` with arguments arranged according\n     * to the specified `indexes` where the argument value at the first index is\n     * provided as the first argument, the argument value at the second index is\n     * provided as the second argument, and so on.\n     *\n     * @static\n     * @memberOf _\n     * @since 3.0.0\n     * @category Function\n     * @param {Function} func The function to rearrange arguments for.\n     * @param {...(number|number[])} indexes The arranged argument indexes.\n     * @returns {Function} Returns the new function.\n     * @example\n     *\n     * var rearged = _.rearg(function(a, b, c) {\n     *   return [a, b, c];\n     * }, [2, 0, 1]);\n     *\n     * rearged('b', 'c', 'a')\n     * // => ['a', 'b', 'c']\n     */\n    var rearg = flatRest(function(func, indexes) {\n      return createWrap(func, WRAP_REARG_FLAG, undefined, undefined, undefined, indexes);\n    });\n\n    /**\n     * Creates a function that invokes `func` with the `this` binding of the\n     * created function and arguments from `start` and beyond provided as\n     * an array.\n     *\n     * **Note:** This method is based on the\n     * [rest parameter](https://mdn.io/rest_parameters).\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Function\n     * @param {Function} func The function to apply a rest parameter to.\n     * @param {number} [start=func.length-1] The start position of the rest parameter.\n     * @returns {Function} Returns the new function.\n     * @example\n     *\n     * var say = _.rest(function(what, names) {\n     *   return what + ' ' + _.initial(names).join(', ') +\n     *     (_.size(names) > 1 ? ', & ' : '') + _.last(names);\n     * });\n     *\n     * say('hello', 'fred', 'barney', 'pebbles');\n     * // => 'hello fred, barney, & pebbles'\n     */\n    function rest(func, start) {\n      if (typeof func != 'function') {\n        throw new TypeError(FUNC_ERROR_TEXT);\n      }\n      start = start === undefined ? start : toInteger(start);\n      return baseRest(func, start);\n    }\n\n    /**\n     * Creates a function that invokes `func` with the `this` binding of the\n     * create function and an array of arguments much like\n     * [`Function#apply`](http://www.ecma-international.org/ecma-262/7.0/#sec-function.prototype.apply).\n     *\n     * **Note:** This method is based on the\n     * [spread operator](https://mdn.io/spread_operator).\n     *\n     * @static\n     * @memberOf _\n     * @since 3.2.0\n     * @category Function\n     * @param {Function} func The function to spread arguments over.\n     * @param {number} [start=0] The start position of the spread.\n     * @returns {Function} Returns the new function.\n     * @example\n     *\n     * var say = _.spread(function(who, what) {\n     *   return who + ' says ' + what;\n     * });\n     *\n     * say(['fred', 'hello']);\n     * // => 'fred says hello'\n     *\n     * var numbers = Promise.all([\n     *   Promise.resolve(40),\n     *   Promise.resolve(36)\n     * ]);\n     *\n     * numbers.then(_.spread(function(x, y) {\n     *   return x + y;\n     * }));\n     * // => a Promise of 76\n     */\n    function spread(func, start) {\n      if (typeof func != 'function') {\n        throw new TypeError(FUNC_ERROR_TEXT);\n      }\n      start = start == null ? 0 : nativeMax(toInteger(start), 0);\n      return baseRest(function(args) {\n        var array = args[start],\n            otherArgs = castSlice(args, 0, start);\n\n        if (array) {\n          arrayPush(otherArgs, array);\n        }\n        return apply(func, this, otherArgs);\n      });\n    }\n\n    /**\n     * Creates a throttled function that only invokes `func` at most once per\n     * every `wait` milliseconds. The throttled function comes with a `cancel`\n     * method to cancel delayed `func` invocations and a `flush` method to\n     * immediately invoke them. Provide `options` to indicate whether `func`\n     * should be invoked on the leading and/or trailing edge of the `wait`\n     * timeout. The `func` is invoked with the last arguments provided to the\n     * throttled function. Subsequent calls to the throttled function return the\n     * result of the last `func` invocation.\n     *\n     * **Note:** If `leading` and `trailing` options are `true`, `func` is\n     * invoked on the trailing edge of the timeout only if the throttled function\n     * is invoked more than once during the `wait` timeout.\n     *\n     * If `wait` is `0` and `leading` is `false`, `func` invocation is deferred\n     * until to the next tick, similar to `setTimeout` with a timeout of `0`.\n     *\n     * See [David Corbacho's article](https://css-tricks.com/debouncing-throttling-explained-examples/)\n     * for details over the differences between `_.throttle` and `_.debounce`.\n     *\n     * @static\n     * @memberOf _\n     * @since 0.1.0\n     * @category Function\n     * @param {Function} func The function to throttle.\n     * @param {number} [wait=0] The number of milliseconds to throttle invocations to.\n     * @param {Object} [options={}] The options object.\n     * @param {boolean} [options.leading=true]\n     *  Specify invoking on the leading edge of the timeout.\n     * @param {boolean} [options.trailing=true]\n     *  Specify invoking on the trailing edge of the timeout.\n     * @returns {Function} Returns the new throttled function.\n     * @example\n     *\n     * // Avoid excessively updating the position while scrolling.\n     * jQuery(window).on('scroll', _.throttle(updatePosition, 100));\n     *\n     * // Invoke `renewToken` when the click event is fired, but not more than once every 5 minutes.\n     * var throttled = _.throttle(renewToken, 300000, { 'trailing': false });\n     * jQuery(element).on('click', throttled);\n     *\n     * // Cancel the trailing throttled invocation.\n     * jQuery(window).on('popstate', throttled.cancel);\n     */\n    function throttle(func, wait, options) {\n      var leading = true,\n          trailing = true;\n\n      if (typeof func != 'function') {\n        throw new TypeError(FUNC_ERROR_TEXT);\n      }\n      if (isObject(options)) {\n        leading = 'leading' in options ? !!options.leading : leading;\n        trailing = 'trailing' in options ? !!options.trailing : trailing;\n      }\n      return debounce(func, wait, {\n        'leading': leading,\n        'maxWait': wait,\n        'trailing': trailing\n      });\n    }\n\n    /**\n     * Creates a function that accepts up to one argument, ignoring any\n     * additional arguments.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Function\n     * @param {Function} func The function to cap arguments for.\n     * @returns {Function} Returns the new capped function.\n     * @example\n     *\n     * _.map(['6', '8', '10'], _.unary(parseInt));\n     * // => [6, 8, 10]\n     */\n    function unary(func) {\n      return ary(func, 1);\n    }\n\n    /**\n     * Creates a function that provides `value` to `wrapper` as its first\n     * argument. Any additional arguments provided to the function are appended\n     * to those provided to the `wrapper`. The wrapper is invoked with the `this`\n     * binding of the created function.\n     *\n     * @static\n     * @memberOf _\n     * @since 0.1.0\n     * @category Function\n     * @param {*} value The value to wrap.\n     * @param {Function} [wrapper=identity] The wrapper function.\n     * @returns {Function} Returns the new function.\n     * @example\n     *\n     * var p = _.wrap(_.escape, function(func, text) {\n     *   return '<p>' + func(text) + '</p>';\n     * });\n     *\n     * p('fred, barney, & pebbles');\n     * // => '<p>fred, barney, &amp; pebbles</p>'\n     */\n    function wrap(value, wrapper) {\n      return partial(castFunction(wrapper), value);\n    }\n\n    /*------------------------------------------------------------------------*/\n\n    /**\n     * Casts `value` as an array if it's not one.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.4.0\n     * @category Lang\n     * @param {*} value The value to inspect.\n     * @returns {Array} Returns the cast array.\n     * @example\n     *\n     * _.castArray(1);\n     * // => [1]\n     *\n     * _.castArray({ 'a': 1 });\n     * // => [{ 'a': 1 }]\n     *\n     * _.castArray('abc');\n     * // => ['abc']\n     *\n     * _.castArray(null);\n     * // => [null]\n     *\n     * _.castArray(undefined);\n     * // => [undefined]\n     *\n     * _.castArray();\n     * // => []\n     *\n     * var array = [1, 2, 3];\n     * console.log(_.castArray(array) === array);\n     * // => true\n     */\n    function castArray() {\n      if (!arguments.length) {\n        return [];\n      }\n      var value = arguments[0];\n      return isArray(value) ? value : [value];\n    }\n\n    /**\n     * Creates a shallow clone of `value`.\n     *\n     * **Note:** This method is loosely based on the\n     * [structured clone algorithm](https://mdn.io/Structured_clone_algorithm)\n     * and supports cloning arrays, array buffers, booleans, date objects, maps,\n     * numbers, `Object` objects, regexes, sets, strings, symbols, and typed\n     * arrays. The own enumerable properties of `arguments` objects are cloned\n     * as plain objects. An empty object is returned for uncloneable values such\n     * as error objects, functions, DOM nodes, and WeakMaps.\n     *\n     * @static\n     * @memberOf _\n     * @since 0.1.0\n     * @category Lang\n     * @param {*} value The value to clone.\n     * @returns {*} Returns the cloned value.\n     * @see _.cloneDeep\n     * @example\n     *\n     * var objects = [{ 'a': 1 }, { 'b': 2 }];\n     *\n     * var shallow = _.clone(objects);\n     * console.log(shallow[0] === objects[0]);\n     * // => true\n     */\n    function clone(value) {\n      return baseClone(value, CLONE_SYMBOLS_FLAG);\n    }\n\n    /**\n     * This method is like `_.clone` except that it accepts `customizer` which\n     * is invoked to produce the cloned value. If `customizer` returns `undefined`,\n     * cloning is handled by the method instead. The `customizer` is invoked with\n     * up to four arguments; (value [, index|key, object, stack]).\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Lang\n     * @param {*} value The value to clone.\n     * @param {Function} [customizer] The function to customize cloning.\n     * @returns {*} Returns the cloned value.\n     * @see _.cloneDeepWith\n     * @example\n     *\n     * function customizer(value) {\n     *   if (_.isElement(value)) {\n     *     return value.cloneNode(false);\n     *   }\n     * }\n     *\n     * var el = _.cloneWith(document.body, customizer);\n     *\n     * console.log(el === document.body);\n     * // => false\n     * console.log(el.nodeName);\n     * // => 'BODY'\n     * console.log(el.childNodes.length);\n     * // => 0\n     */\n    function cloneWith(value, customizer) {\n      customizer = typeof customizer == 'function' ? customizer : undefined;\n      return baseClone(value, CLONE_SYMBOLS_FLAG, customizer);\n    }\n\n    /**\n     * This method is like `_.clone` except that it recursively clones `value`.\n     *\n     * @static\n     * @memberOf _\n     * @since 1.0.0\n     * @category Lang\n     * @param {*} value The value to recursively clone.\n     * @returns {*} Returns the deep cloned value.\n     * @see _.clone\n     * @example\n     *\n     * var objects = [{ 'a': 1 }, { 'b': 2 }];\n     *\n     * var deep = _.cloneDeep(objects);\n     * console.log(deep[0] === objects[0]);\n     * // => false\n     */\n    function cloneDeep(value) {\n      return baseClone(value, CLONE_DEEP_FLAG | CLONE_SYMBOLS_FLAG);\n    }\n\n    /**\n     * This method is like `_.cloneWith` except that it recursively clones `value`.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Lang\n     * @param {*} value The value to recursively clone.\n     * @param {Function} [customizer] The function to customize cloning.\n     * @returns {*} Returns the deep cloned value.\n     * @see _.cloneWith\n     * @example\n     *\n     * function customizer(value) {\n     *   if (_.isElement(value)) {\n     *     return value.cloneNode(true);\n     *   }\n     * }\n     *\n     * var el = _.cloneDeepWith(document.body, customizer);\n     *\n     * console.log(el === document.body);\n     * // => false\n     * console.log(el.nodeName);\n     * // => 'BODY'\n     * console.log(el.childNodes.length);\n     * // => 20\n     */\n    function cloneDeepWith(value, customizer) {\n      customizer = typeof customizer == 'function' ? customizer : undefined;\n      return baseClone(value, CLONE_DEEP_FLAG | CLONE_SYMBOLS_FLAG, customizer);\n    }\n\n    /**\n     * Checks if `object` conforms to `source` by invoking the predicate\n     * properties of `source` with the corresponding property values of `object`.\n     *\n     * **Note:** This method is equivalent to `_.conforms` when `source` is\n     * partially applied.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.14.0\n     * @category Lang\n     * @param {Object} object The object to inspect.\n     * @param {Object} source The object of property predicates to conform to.\n     * @returns {boolean} Returns `true` if `object` conforms, else `false`.\n     * @example\n     *\n     * var object = { 'a': 1, 'b': 2 };\n     *\n     * _.conformsTo(object, { 'b': function(n) { return n > 1; } });\n     * // => true\n     *\n     * _.conformsTo(object, { 'b': function(n) { return n > 2; } });\n     * // => false\n     */\n    function conformsTo(object, source) {\n      return source == null || baseConformsTo(object, source, keys(source));\n    }\n\n    /**\n     * Performs a\n     * [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)\n     * comparison between two values to determine if they are equivalent.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Lang\n     * @param {*} value The value to compare.\n     * @param {*} other The other value to compare.\n     * @returns {boolean} Returns `true` if the values are equivalent, else `false`.\n     * @example\n     *\n     * var object = { 'a': 1 };\n     * var other = { 'a': 1 };\n     *\n     * _.eq(object, object);\n     * // => true\n     *\n     * _.eq(object, other);\n     * // => false\n     *\n     * _.eq('a', 'a');\n     * // => true\n     *\n     * _.eq('a', Object('a'));\n     * // => false\n     *\n     * _.eq(NaN, NaN);\n     * // => true\n     */\n    function eq(value, other) {\n      return value === other || (value !== value && other !== other);\n    }\n\n    /**\n     * Checks if `value` is greater than `other`.\n     *\n     * @static\n     * @memberOf _\n     * @since 3.9.0\n     * @category Lang\n     * @param {*} value The value to compare.\n     * @param {*} other The other value to compare.\n     * @returns {boolean} Returns `true` if `value` is greater than `other`,\n     *  else `false`.\n     * @see _.lt\n     * @example\n     *\n     * _.gt(3, 1);\n     * // => true\n     *\n     * _.gt(3, 3);\n     * // => false\n     *\n     * _.gt(1, 3);\n     * // => false\n     */\n    var gt = createRelationalOperation(baseGt);\n\n    /**\n     * Checks if `value` is greater than or equal to `other`.\n     *\n     * @static\n     * @memberOf _\n     * @since 3.9.0\n     * @category Lang\n     * @param {*} value The value to compare.\n     * @param {*} other The other value to compare.\n     * @returns {boolean} Returns `true` if `value` is greater than or equal to\n     *  `other`, else `false`.\n     * @see _.lte\n     * @example\n     *\n     * _.gte(3, 1);\n     * // => true\n     *\n     * _.gte(3, 3);\n     * // => true\n     *\n     * _.gte(1, 3);\n     * // => false\n     */\n    var gte = createRelationalOperation(function(value, other) {\n      return value >= other;\n    });\n\n    /**\n     * Checks if `value` is likely an `arguments` object.\n     *\n     * @static\n     * @memberOf _\n     * @since 0.1.0\n     * @category Lang\n     * @param {*} value The value to check.\n     * @returns {boolean} Returns `true` if `value` is an `arguments` object,\n     *  else `false`.\n     * @example\n     *\n     * _.isArguments(function() { return arguments; }());\n     * // => true\n     *\n     * _.isArguments([1, 2, 3]);\n     * // => false\n     */\n    var isArguments = baseIsArguments(function() { return arguments; }()) ? baseIsArguments : function(value) {\n      return isObjectLike(value) && hasOwnProperty.call(value, 'callee') &&\n        !propertyIsEnumerable.call(value, 'callee');\n    };\n\n    /**\n     * Checks if `value` is classified as an `Array` object.\n     *\n     * @static\n     * @memberOf _\n     * @since 0.1.0\n     * @category Lang\n     * @param {*} value The value to check.\n     * @returns {boolean} Returns `true` if `value` is an array, else `false`.\n     * @example\n     *\n     * _.isArray([1, 2, 3]);\n     * // => true\n     *\n     * _.isArray(document.body.children);\n     * // => false\n     *\n     * _.isArray('abc');\n     * // => false\n     *\n     * _.isArray(_.noop);\n     * // => false\n     */\n    var isArray = Array.isArray;\n\n    /**\n     * Checks if `value` is classified as an `ArrayBuffer` object.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.3.0\n     * @category Lang\n     * @param {*} value The value to check.\n     * @returns {boolean} Returns `true` if `value` is an array buffer, else `false`.\n     * @example\n     *\n     * _.isArrayBuffer(new ArrayBuffer(2));\n     * // => true\n     *\n     * _.isArrayBuffer(new Array(2));\n     * // => false\n     */\n    var isArrayBuffer = nodeIsArrayBuffer ? baseUnary(nodeIsArrayBuffer) : baseIsArrayBuffer;\n\n    /**\n     * Checks if `value` is array-like. A value is considered array-like if it's\n     * not a function and has a `value.length` that's an integer greater than or\n     * equal to `0` and less than or equal to `Number.MAX_SAFE_INTEGER`.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Lang\n     * @param {*} value The value to check.\n     * @returns {boolean} Returns `true` if `value` is array-like, else `false`.\n     * @example\n     *\n     * _.isArrayLike([1, 2, 3]);\n     * // => true\n     *\n     * _.isArrayLike(document.body.children);\n     * // => true\n     *\n     * _.isArrayLike('abc');\n     * // => true\n     *\n     * _.isArrayLike(_.noop);\n     * // => false\n     */\n    function isArrayLike(value) {\n      return value != null && isLength(value.length) && !isFunction(value);\n    }\n\n    /**\n     * This method is like `_.isArrayLike` except that it also checks if `value`\n     * is an object.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Lang\n     * @param {*} value The value to check.\n     * @returns {boolean} Returns `true` if `value` is an array-like object,\n     *  else `false`.\n     * @example\n     *\n     * _.isArrayLikeObject([1, 2, 3]);\n     * // => true\n     *\n     * _.isArrayLikeObject(document.body.children);\n     * // => true\n     *\n     * _.isArrayLikeObject('abc');\n     * // => false\n     *\n     * _.isArrayLikeObject(_.noop);\n     * // => false\n     */\n    function isArrayLikeObject(value) {\n      return isObjectLike(value) && isArrayLike(value);\n    }\n\n    /**\n     * Checks if `value` is classified as a boolean primitive or object.\n     *\n     * @static\n     * @memberOf _\n     * @since 0.1.0\n     * @category Lang\n     * @param {*} value The value to check.\n     * @returns {boolean} Returns `true` if `value` is a boolean, else `false`.\n     * @example\n     *\n     * _.isBoolean(false);\n     * // => true\n     *\n     * _.isBoolean(null);\n     * // => false\n     */\n    function isBoolean(value) {\n      return value === true || value === false ||\n        (isObjectLike(value) && baseGetTag(value) == boolTag);\n    }\n\n    /**\n     * Checks if `value` is a buffer.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.3.0\n     * @category Lang\n     * @param {*} value The value to check.\n     * @returns {boolean} Returns `true` if `value` is a buffer, else `false`.\n     * @example\n     *\n     * _.isBuffer(new Buffer(2));\n     * // => true\n     *\n     * _.isBuffer(new Uint8Array(2));\n     * // => false\n     */\n    var isBuffer = nativeIsBuffer || stubFalse;\n\n    /**\n     * Checks if `value` is classified as a `Date` object.\n     *\n     * @static\n     * @memberOf _\n     * @since 0.1.0\n     * @category Lang\n     * @param {*} value The value to check.\n     * @returns {boolean} Returns `true` if `value` is a date object, else `false`.\n     * @example\n     *\n     * _.isDate(new Date);\n     * // => true\n     *\n     * _.isDate('Mon April 23 2012');\n     * // => false\n     */\n    var isDate = nodeIsDate ? baseUnary(nodeIsDate) : baseIsDate;\n\n    /**\n     * Checks if `value` is likely a DOM element.\n     *\n     * @static\n     * @memberOf _\n     * @since 0.1.0\n     * @category Lang\n     * @param {*} value The value to check.\n     * @returns {boolean} Returns `true` if `value` is a DOM element, else `false`.\n     * @example\n     *\n     * _.isElement(document.body);\n     * // => true\n     *\n     * _.isElement('<body>');\n     * // => false\n     */\n    function isElement(value) {\n      return isObjectLike(value) && value.nodeType === 1 && !isPlainObject(value);\n    }\n\n    /**\n     * Checks if `value` is an empty object, collection, map, or set.\n     *\n     * Objects are considered empty if they have no own enumerable string keyed\n     * properties.\n     *\n     * Array-like values such as `arguments` objects, arrays, buffers, strings, or\n     * jQuery-like collections are considered empty if they have a `length` of `0`.\n     * Similarly, maps and sets are considered empty if they have a `size` of `0`.\n     *\n     * @static\n     * @memberOf _\n     * @since 0.1.0\n     * @category Lang\n     * @param {*} value The value to check.\n     * @returns {boolean} Returns `true` if `value` is empty, else `false`.\n     * @example\n     *\n     * _.isEmpty(null);\n     * // => true\n     *\n     * _.isEmpty(true);\n     * // => true\n     *\n     * _.isEmpty(1);\n     * // => true\n     *\n     * _.isEmpty([1, 2, 3]);\n     * // => false\n     *\n     * _.isEmpty({ 'a': 1 });\n     * // => false\n     */\n    function isEmpty(value) {\n      if (value == null) {\n        return true;\n      }\n      if (isArrayLike(value) &&\n          (isArray(value) || typeof value == 'string' || typeof value.splice == 'function' ||\n            isBuffer(value) || isTypedArray(value) || isArguments(value))) {\n        return !value.length;\n      }\n      var tag = getTag(value);\n      if (tag == mapTag || tag == setTag) {\n        return !value.size;\n      }\n      if (isPrototype(value)) {\n        return !baseKeys(value).length;\n      }\n      for (var key in value) {\n        if (hasOwnProperty.call(value, key)) {\n          return false;\n        }\n      }\n      return true;\n    }\n\n    /**\n     * Performs a deep comparison between two values to determine if they are\n     * equivalent.\n     *\n     * **Note:** This method supports comparing arrays, array buffers, booleans,\n     * date objects, error objects, maps, numbers, `Object` objects, regexes,\n     * sets, strings, symbols, and typed arrays. `Object` objects are compared\n     * by their own, not inherited, enumerable properties. Functions and DOM\n     * nodes are compared by strict equality, i.e. `===`.\n     *\n     * @static\n     * @memberOf _\n     * @since 0.1.0\n     * @category Lang\n     * @param {*} value The value to compare.\n     * @param {*} other The other value to compare.\n     * @returns {boolean} Returns `true` if the values are equivalent, else `false`.\n     * @example\n     *\n     * var object = { 'a': 1 };\n     * var other = { 'a': 1 };\n     *\n     * _.isEqual(object, other);\n     * // => true\n     *\n     * object === other;\n     * // => false\n     */\n    function isEqual(value, other) {\n      return baseIsEqual(value, other);\n    }\n\n    /**\n     * This method is like `_.isEqual` except that it accepts `customizer` which\n     * is invoked to compare values. If `customizer` returns `undefined`, comparisons\n     * are handled by the method instead. The `customizer` is invoked with up to\n     * six arguments: (objValue, othValue [, index|key, object, other, stack]).\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Lang\n     * @param {*} value The value to compare.\n     * @param {*} other The other value to compare.\n     * @param {Function} [customizer] The function to customize comparisons.\n     * @returns {boolean} Returns `true` if the values are equivalent, else `false`.\n     * @example\n     *\n     * function isGreeting(value) {\n     *   return /^h(?:i|ello)$/.test(value);\n     * }\n     *\n     * function customizer(objValue, othValue) {\n     *   if (isGreeting(objValue) && isGreeting(othValue)) {\n     *     return true;\n     *   }\n     * }\n     *\n     * var array = ['hello', 'goodbye'];\n     * var other = ['hi', 'goodbye'];\n     *\n     * _.isEqualWith(array, other, customizer);\n     * // => true\n     */\n    function isEqualWith(value, other, customizer) {\n      customizer = typeof customizer == 'function' ? customizer : undefined;\n      var result = customizer ? customizer(value, other) : undefined;\n      return result === undefined ? baseIsEqual(value, other, undefined, customizer) : !!result;\n    }\n\n    /**\n     * Checks if `value` is an `Error`, `EvalError`, `RangeError`, `ReferenceError`,\n     * `SyntaxError`, `TypeError`, or `URIError` object.\n     *\n     * @static\n     * @memberOf _\n     * @since 3.0.0\n     * @category Lang\n     * @param {*} value The value to check.\n     * @returns {boolean} Returns `true` if `value` is an error object, else `false`.\n     * @example\n     *\n     * _.isError(new Error);\n     * // => true\n     *\n     * _.isError(Error);\n     * // => false\n     */\n    function isError(value) {\n      if (!isObjectLike(value)) {\n        return false;\n      }\n      var tag = baseGetTag(value);\n      return tag == errorTag || tag == domExcTag ||\n        (typeof value.message == 'string' && typeof value.name == 'string' && !isPlainObject(value));\n    }\n\n    /**\n     * Checks if `value` is a finite primitive number.\n     *\n     * **Note:** This method is based on\n     * [`Number.isFinite`](https://mdn.io/Number/isFinite).\n     *\n     * @static\n     * @memberOf _\n     * @since 0.1.0\n     * @category Lang\n     * @param {*} value The value to check.\n     * @returns {boolean} Returns `true` if `value` is a finite number, else `false`.\n     * @example\n     *\n     * _.isFinite(3);\n     * // => true\n     *\n     * _.isFinite(Number.MIN_VALUE);\n     * // => true\n     *\n     * _.isFinite(Infinity);\n     * // => false\n     *\n     * _.isFinite('3');\n     * // => false\n     */\n    function isFinite(value) {\n      return typeof value == 'number' && nativeIsFinite(value);\n    }\n\n    /**\n     * Checks if `value` is classified as a `Function` object.\n     *\n     * @static\n     * @memberOf _\n     * @since 0.1.0\n     * @category Lang\n     * @param {*} value The value to check.\n     * @returns {boolean} Returns `true` if `value` is a function, else `false`.\n     * @example\n     *\n     * _.isFunction(_);\n     * // => true\n     *\n     * _.isFunction(/abc/);\n     * // => false\n     */\n    function isFunction(value) {\n      if (!isObject(value)) {\n        return false;\n      }\n      // The use of `Object#toString` avoids issues with the `typeof` operator\n      // in Safari 9 which returns 'object' for typed arrays and other constructors.\n      var tag = baseGetTag(value);\n      return tag == funcTag || tag == genTag || tag == asyncTag || tag == proxyTag;\n    }\n\n    /**\n     * Checks if `value` is an integer.\n     *\n     * **Note:** This method is based on\n     * [`Number.isInteger`](https://mdn.io/Number/isInteger).\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Lang\n     * @param {*} value The value to check.\n     * @returns {boolean} Returns `true` if `value` is an integer, else `false`.\n     * @example\n     *\n     * _.isInteger(3);\n     * // => true\n     *\n     * _.isInteger(Number.MIN_VALUE);\n     * // => false\n     *\n     * _.isInteger(Infinity);\n     * // => false\n     *\n     * _.isInteger('3');\n     * // => false\n     */\n    function isInteger(value) {\n      return typeof value == 'number' && value == toInteger(value);\n    }\n\n    /**\n     * Checks if `value` is a valid array-like length.\n     *\n     * **Note:** This method is loosely based on\n     * [`ToLength`](http://ecma-international.org/ecma-262/7.0/#sec-tolength).\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Lang\n     * @param {*} value The value to check.\n     * @returns {boolean} Returns `true` if `value` is a valid length, else `false`.\n     * @example\n     *\n     * _.isLength(3);\n     * // => true\n     *\n     * _.isLength(Number.MIN_VALUE);\n     * // => false\n     *\n     * _.isLength(Infinity);\n     * // => false\n     *\n     * _.isLength('3');\n     * // => false\n     */\n    function isLength(value) {\n      return typeof value == 'number' &&\n        value > -1 && value % 1 == 0 && value <= MAX_SAFE_INTEGER;\n    }\n\n    /**\n     * Checks if `value` is the\n     * [language type](http://www.ecma-international.org/ecma-262/7.0/#sec-ecmascript-language-types)\n     * of `Object`. (e.g. arrays, functions, objects, regexes, `new Number(0)`, and `new String('')`)\n     *\n     * @static\n     * @memberOf _\n     * @since 0.1.0\n     * @category Lang\n     * @param {*} value The value to check.\n     * @returns {boolean} Returns `true` if `value` is an object, else `false`.\n     * @example\n     *\n     * _.isObject({});\n     * // => true\n     *\n     * _.isObject([1, 2, 3]);\n     * // => true\n     *\n     * _.isObject(_.noop);\n     * // => true\n     *\n     * _.isObject(null);\n     * // => false\n     */\n    function isObject(value) {\n      var type = typeof value;\n      return value != null && (type == 'object' || type == 'function');\n    }\n\n    /**\n     * Checks if `value` is object-like. A value is object-like if it's not `null`\n     * and has a `typeof` result of \"object\".\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Lang\n     * @param {*} value The value to check.\n     * @returns {boolean} Returns `true` if `value` is object-like, else `false`.\n     * @example\n     *\n     * _.isObjectLike({});\n     * // => true\n     *\n     * _.isObjectLike([1, 2, 3]);\n     * // => true\n     *\n     * _.isObjectLike(_.noop);\n     * // => false\n     *\n     * _.isObjectLike(null);\n     * // => false\n     */\n    function isObjectLike(value) {\n      return value != null && typeof value == 'object';\n    }\n\n    /**\n     * Checks if `value` is classified as a `Map` object.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.3.0\n     * @category Lang\n     * @param {*} value The value to check.\n     * @returns {boolean} Returns `true` if `value` is a map, else `false`.\n     * @example\n     *\n     * _.isMap(new Map);\n     * // => true\n     *\n     * _.isMap(new WeakMap);\n     * // => false\n     */\n    var isMap = nodeIsMap ? baseUnary(nodeIsMap) : baseIsMap;\n\n    /**\n     * Performs a partial deep comparison between `object` and `source` to\n     * determine if `object` contains equivalent property values.\n     *\n     * **Note:** This method is equivalent to `_.matches` when `source` is\n     * partially applied.\n     *\n     * Partial comparisons will match empty array and empty object `source`\n     * values against any array or object value, respectively. See `_.isEqual`\n     * for a list of supported value comparisons.\n     *\n     * @static\n     * @memberOf _\n     * @since 3.0.0\n     * @category Lang\n     * @param {Object} object The object to inspect.\n     * @param {Object} source The object of property values to match.\n     * @returns {boolean} Returns `true` if `object` is a match, else `false`.\n     * @example\n     *\n     * var object = { 'a': 1, 'b': 2 };\n     *\n     * _.isMatch(object, { 'b': 2 });\n     * // => true\n     *\n     * _.isMatch(object, { 'b': 1 });\n     * // => false\n     */\n    function isMatch(object, source) {\n      return object === source || baseIsMatch(object, source, getMatchData(source));\n    }\n\n    /**\n     * This method is like `_.isMatch` except that it accepts `customizer` which\n     * is invoked to compare values. If `customizer` returns `undefined`, comparisons\n     * are handled by the method instead. The `customizer` is invoked with five\n     * arguments: (objValue, srcValue, index|key, object, source).\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Lang\n     * @param {Object} object The object to inspect.\n     * @param {Object} source The object of property values to match.\n     * @param {Function} [customizer] The function to customize comparisons.\n     * @returns {boolean} Returns `true` if `object` is a match, else `false`.\n     * @example\n     *\n     * function isGreeting(value) {\n     *   return /^h(?:i|ello)$/.test(value);\n     * }\n     *\n     * function customizer(objValue, srcValue) {\n     *   if (isGreeting(objValue) && isGreeting(srcValue)) {\n     *     return true;\n     *   }\n     * }\n     *\n     * var object = { 'greeting': 'hello' };\n     * var source = { 'greeting': 'hi' };\n     *\n     * _.isMatchWith(object, source, customizer);\n     * // => true\n     */\n    function isMatchWith(object, source, customizer) {\n      customizer = typeof customizer == 'function' ? customizer : undefined;\n      return baseIsMatch(object, source, getMatchData(source), customizer);\n    }\n\n    /**\n     * Checks if `value` is `NaN`.\n     *\n     * **Note:** This method is based on\n     * [`Number.isNaN`](https://mdn.io/Number/isNaN) and is not the same as\n     * global [`isNaN`](https://mdn.io/isNaN) which returns `true` for\n     * `undefined` and other non-number values.\n     *\n     * @static\n     * @memberOf _\n     * @since 0.1.0\n     * @category Lang\n     * @param {*} value The value to check.\n     * @returns {boolean} Returns `true` if `value` is `NaN`, else `false`.\n     * @example\n     *\n     * _.isNaN(NaN);\n     * // => true\n     *\n     * _.isNaN(new Number(NaN));\n     * // => true\n     *\n     * isNaN(undefined);\n     * // => true\n     *\n     * _.isNaN(undefined);\n     * // => false\n     */\n    function isNaN(value) {\n      // An `NaN` primitive is the only value that is not equal to itself.\n      // Perform the `toStringTag` check first to avoid errors with some\n      // ActiveX objects in IE.\n      return isNumber(value) && value != +value;\n    }\n\n    /**\n     * Checks if `value` is a pristine native function.\n     *\n     * **Note:** This method can't reliably detect native functions in the presence\n     * of the core-js package because core-js circumvents this kind of detection.\n     * Despite multiple requests, the core-js maintainer has made it clear: any\n     * attempt to fix the detection will be obstructed. As a result, we're left\n     * with little choice but to throw an error. Unfortunately, this also affects\n     * packages, like [babel-polyfill](https://www.npmjs.com/package/babel-polyfill),\n     * which rely on core-js.\n     *\n     * @static\n     * @memberOf _\n     * @since 3.0.0\n     * @category Lang\n     * @param {*} value The value to check.\n     * @returns {boolean} Returns `true` if `value` is a native function,\n     *  else `false`.\n     * @example\n     *\n     * _.isNative(Array.prototype.push);\n     * // => true\n     *\n     * _.isNative(_);\n     * // => false\n     */\n    function isNative(value) {\n      if (isMaskable(value)) {\n        throw new Error(CORE_ERROR_TEXT);\n      }\n      return baseIsNative(value);\n    }\n\n    /**\n     * Checks if `value` is `null`.\n     *\n     * @static\n     * @memberOf _\n     * @since 0.1.0\n     * @category Lang\n     * @param {*} value The value to check.\n     * @returns {boolean} Returns `true` if `value` is `null`, else `false`.\n     * @example\n     *\n     * _.isNull(null);\n     * // => true\n     *\n     * _.isNull(void 0);\n     * // => false\n     */\n    function isNull(value) {\n      return value === null;\n    }\n\n    /**\n     * Checks if `value` is `null` or `undefined`.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Lang\n     * @param {*} value The value to check.\n     * @returns {boolean} Returns `true` if `value` is nullish, else `false`.\n     * @example\n     *\n     * _.isNil(null);\n     * // => true\n     *\n     * _.isNil(void 0);\n     * // => true\n     *\n     * _.isNil(NaN);\n     * // => false\n     */\n    function isNil(value) {\n      return value == null;\n    }\n\n    /**\n     * Checks if `value` is classified as a `Number` primitive or object.\n     *\n     * **Note:** To exclude `Infinity`, `-Infinity`, and `NaN`, which are\n     * classified as numbers, use the `_.isFinite` method.\n     *\n     * @static\n     * @memberOf _\n     * @since 0.1.0\n     * @category Lang\n     * @param {*} value The value to check.\n     * @returns {boolean} Returns `true` if `value` is a number, else `false`.\n     * @example\n     *\n     * _.isNumber(3);\n     * // => true\n     *\n     * _.isNumber(Number.MIN_VALUE);\n     * // => true\n     *\n     * _.isNumber(Infinity);\n     * // => true\n     *\n     * _.isNumber('3');\n     * // => false\n     */\n    function isNumber(value) {\n      return typeof value == 'number' ||\n        (isObjectLike(value) && baseGetTag(value) == numberTag);\n    }\n\n    /**\n     * Checks if `value` is a plain object, that is, an object created by the\n     * `Object` constructor or one with a `[[Prototype]]` of `null`.\n     *\n     * @static\n     * @memberOf _\n     * @since 0.8.0\n     * @category Lang\n     * @param {*} value The value to check.\n     * @returns {boolean} Returns `true` if `value` is a plain object, else `false`.\n     * @example\n     *\n     * function Foo() {\n     *   this.a = 1;\n     * }\n     *\n     * _.isPlainObject(new Foo);\n     * // => false\n     *\n     * _.isPlainObject([1, 2, 3]);\n     * // => false\n     *\n     * _.isPlainObject({ 'x': 0, 'y': 0 });\n     * // => true\n     *\n     * _.isPlainObject(Object.create(null));\n     * // => true\n     */\n    function isPlainObject(value) {\n      if (!isObjectLike(value) || baseGetTag(value) != objectTag) {\n        return false;\n      }\n      var proto = getPrototype(value);\n      if (proto === null) {\n        return true;\n      }\n      var Ctor = hasOwnProperty.call(proto, 'constructor') && proto.constructor;\n      return typeof Ctor == 'function' && Ctor instanceof Ctor &&\n        funcToString.call(Ctor) == objectCtorString;\n    }\n\n    /**\n     * Checks if `value` is classified as a `RegExp` object.\n     *\n     * @static\n     * @memberOf _\n     * @since 0.1.0\n     * @category Lang\n     * @param {*} value The value to check.\n     * @returns {boolean} Returns `true` if `value` is a regexp, else `false`.\n     * @example\n     *\n     * _.isRegExp(/abc/);\n     * // => true\n     *\n     * _.isRegExp('/abc/');\n     * // => false\n     */\n    var isRegExp = nodeIsRegExp ? baseUnary(nodeIsRegExp) : baseIsRegExp;\n\n    /**\n     * Checks if `value` is a safe integer. An integer is safe if it's an IEEE-754\n     * double precision number which isn't the result of a rounded unsafe integer.\n     *\n     * **Note:** This method is based on\n     * [`Number.isSafeInteger`](https://mdn.io/Number/isSafeInteger).\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Lang\n     * @param {*} value The value to check.\n     * @returns {boolean} Returns `true` if `value` is a safe integer, else `false`.\n     * @example\n     *\n     * _.isSafeInteger(3);\n     * // => true\n     *\n     * _.isSafeInteger(Number.MIN_VALUE);\n     * // => false\n     *\n     * _.isSafeInteger(Infinity);\n     * // => false\n     *\n     * _.isSafeInteger('3');\n     * // => false\n     */\n    function isSafeInteger(value) {\n      return isInteger(value) && value >= -MAX_SAFE_INTEGER && value <= MAX_SAFE_INTEGER;\n    }\n\n    /**\n     * Checks if `value` is classified as a `Set` object.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.3.0\n     * @category Lang\n     * @param {*} value The value to check.\n     * @returns {boolean} Returns `true` if `value` is a set, else `false`.\n     * @example\n     *\n     * _.isSet(new Set);\n     * // => true\n     *\n     * _.isSet(new WeakSet);\n     * // => false\n     */\n    var isSet = nodeIsSet ? baseUnary(nodeIsSet) : baseIsSet;\n\n    /**\n     * Checks if `value` is classified as a `String` primitive or object.\n     *\n     * @static\n     * @since 0.1.0\n     * @memberOf _\n     * @category Lang\n     * @param {*} value The value to check.\n     * @returns {boolean} Returns `true` if `value` is a string, else `false`.\n     * @example\n     *\n     * _.isString('abc');\n     * // => true\n     *\n     * _.isString(1);\n     * // => false\n     */\n    function isString(value) {\n      return typeof value == 'string' ||\n        (!isArray(value) && isObjectLike(value) && baseGetTag(value) == stringTag);\n    }\n\n    /**\n     * Checks if `value` is classified as a `Symbol` primitive or object.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Lang\n     * @param {*} value The value to check.\n     * @returns {boolean} Returns `true` if `value` is a symbol, else `false`.\n     * @example\n     *\n     * _.isSymbol(Symbol.iterator);\n     * // => true\n     *\n     * _.isSymbol('abc');\n     * // => false\n     */\n    function isSymbol(value) {\n      return typeof value == 'symbol' ||\n        (isObjectLike(value) && baseGetTag(value) == symbolTag);\n    }\n\n    /**\n     * Checks if `value` is classified as a typed array.\n     *\n     * @static\n     * @memberOf _\n     * @since 3.0.0\n     * @category Lang\n     * @param {*} value The value to check.\n     * @returns {boolean} Returns `true` if `value` is a typed array, else `false`.\n     * @example\n     *\n     * _.isTypedArray(new Uint8Array);\n     * // => true\n     *\n     * _.isTypedArray([]);\n     * // => false\n     */\n    var isTypedArray = nodeIsTypedArray ? baseUnary(nodeIsTypedArray) : baseIsTypedArray;\n\n    /**\n     * Checks if `value` is `undefined`.\n     *\n     * @static\n     * @since 0.1.0\n     * @memberOf _\n     * @category Lang\n     * @param {*} value The value to check.\n     * @returns {boolean} Returns `true` if `value` is `undefined`, else `false`.\n     * @example\n     *\n     * _.isUndefined(void 0);\n     * // => true\n     *\n     * _.isUndefined(null);\n     * // => false\n     */\n    function isUndefined(value) {\n      return value === undefined;\n    }\n\n    /**\n     * Checks if `value` is classified as a `WeakMap` object.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.3.0\n     * @category Lang\n     * @param {*} value The value to check.\n     * @returns {boolean} Returns `true` if `value` is a weak map, else `false`.\n     * @example\n     *\n     * _.isWeakMap(new WeakMap);\n     * // => true\n     *\n     * _.isWeakMap(new Map);\n     * // => false\n     */\n    function isWeakMap(value) {\n      return isObjectLike(value) && getTag(value) == weakMapTag;\n    }\n\n    /**\n     * Checks if `value` is classified as a `WeakSet` object.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.3.0\n     * @category Lang\n     * @param {*} value The value to check.\n     * @returns {boolean} Returns `true` if `value` is a weak set, else `false`.\n     * @example\n     *\n     * _.isWeakSet(new WeakSet);\n     * // => true\n     *\n     * _.isWeakSet(new Set);\n     * // => false\n     */\n    function isWeakSet(value) {\n      return isObjectLike(value) && baseGetTag(value) == weakSetTag;\n    }\n\n    /**\n     * Checks if `value` is less than `other`.\n     *\n     * @static\n     * @memberOf _\n     * @since 3.9.0\n     * @category Lang\n     * @param {*} value The value to compare.\n     * @param {*} other The other value to compare.\n     * @returns {boolean} Returns `true` if `value` is less than `other`,\n     *  else `false`.\n     * @see _.gt\n     * @example\n     *\n     * _.lt(1, 3);\n     * // => true\n     *\n     * _.lt(3, 3);\n     * // => false\n     *\n     * _.lt(3, 1);\n     * // => false\n     */\n    var lt = createRelationalOperation(baseLt);\n\n    /**\n     * Checks if `value` is less than or equal to `other`.\n     *\n     * @static\n     * @memberOf _\n     * @since 3.9.0\n     * @category Lang\n     * @param {*} value The value to compare.\n     * @param {*} other The other value to compare.\n     * @returns {boolean} Returns `true` if `value` is less than or equal to\n     *  `other`, else `false`.\n     * @see _.gte\n     * @example\n     *\n     * _.lte(1, 3);\n     * // => true\n     *\n     * _.lte(3, 3);\n     * // => true\n     *\n     * _.lte(3, 1);\n     * // => false\n     */\n    var lte = createRelationalOperation(function(value, other) {\n      return value <= other;\n    });\n\n    /**\n     * Converts `value` to an array.\n     *\n     * @static\n     * @since 0.1.0\n     * @memberOf _\n     * @category Lang\n     * @param {*} value The value to convert.\n     * @returns {Array} Returns the converted array.\n     * @example\n     *\n     * _.toArray({ 'a': 1, 'b': 2 });\n     * // => [1, 2]\n     *\n     * _.toArray('abc');\n     * // => ['a', 'b', 'c']\n     *\n     * _.toArray(1);\n     * // => []\n     *\n     * _.toArray(null);\n     * // => []\n     */\n    function toArray(value) {\n      if (!value) {\n        return [];\n      }\n      if (isArrayLike(value)) {\n        return isString(value) ? stringToArray(value) : copyArray(value);\n      }\n      if (symIterator && value[symIterator]) {\n        return iteratorToArray(value[symIterator]());\n      }\n      var tag = getTag(value),\n          func = tag == mapTag ? mapToArray : (tag == setTag ? setToArray : values);\n\n      return func(value);\n    }\n\n    /**\n     * Converts `value` to a finite number.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.12.0\n     * @category Lang\n     * @param {*} value The value to convert.\n     * @returns {number} Returns the converted number.\n     * @example\n     *\n     * _.toFinite(3.2);\n     * // => 3.2\n     *\n     * _.toFinite(Number.MIN_VALUE);\n     * // => 5e-324\n     *\n     * _.toFinite(Infinity);\n     * // => 1.7976931348623157e+308\n     *\n     * _.toFinite('3.2');\n     * // => 3.2\n     */\n    function toFinite(value) {\n      if (!value) {\n        return value === 0 ? value : 0;\n      }\n      value = toNumber(value);\n      if (value === INFINITY || value === -INFINITY) {\n        var sign = (value < 0 ? -1 : 1);\n        return sign * MAX_INTEGER;\n      }\n      return value === value ? value : 0;\n    }\n\n    /**\n     * Converts `value` to an integer.\n     *\n     * **Note:** This method is loosely based on\n     * [`ToInteger`](http://www.ecma-international.org/ecma-262/7.0/#sec-tointeger).\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Lang\n     * @param {*} value The value to convert.\n     * @returns {number} Returns the converted integer.\n     * @example\n     *\n     * _.toInteger(3.2);\n     * // => 3\n     *\n     * _.toInteger(Number.MIN_VALUE);\n     * // => 0\n     *\n     * _.toInteger(Infinity);\n     * // => 1.7976931348623157e+308\n     *\n     * _.toInteger('3.2');\n     * // => 3\n     */\n    function toInteger(value) {\n      var result = toFinite(value),\n          remainder = result % 1;\n\n      return result === result ? (remainder ? result - remainder : result) : 0;\n    }\n\n    /**\n     * Converts `value` to an integer suitable for use as the length of an\n     * array-like object.\n     *\n     * **Note:** This method is based on\n     * [`ToLength`](http://ecma-international.org/ecma-262/7.0/#sec-tolength).\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Lang\n     * @param {*} value The value to convert.\n     * @returns {number} Returns the converted integer.\n     * @example\n     *\n     * _.toLength(3.2);\n     * // => 3\n     *\n     * _.toLength(Number.MIN_VALUE);\n     * // => 0\n     *\n     * _.toLength(Infinity);\n     * // => 4294967295\n     *\n     * _.toLength('3.2');\n     * // => 3\n     */\n    function toLength(value) {\n      return value ? baseClamp(toInteger(value), 0, MAX_ARRAY_LENGTH) : 0;\n    }\n\n    /**\n     * Converts `value` to a number.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Lang\n     * @param {*} value The value to process.\n     * @returns {number} Returns the number.\n     * @example\n     *\n     * _.toNumber(3.2);\n     * // => 3.2\n     *\n     * _.toNumber(Number.MIN_VALUE);\n     * // => 5e-324\n     *\n     * _.toNumber(Infinity);\n     * // => Infinity\n     *\n     * _.toNumber('3.2');\n     * // => 3.2\n     */\n    function toNumber(value) {\n      if (typeof value == 'number') {\n        return value;\n      }\n      if (isSymbol(value)) {\n        return NAN;\n      }\n      if (isObject(value)) {\n        var other = typeof value.valueOf == 'function' ? value.valueOf() : value;\n        value = isObject(other) ? (other + '') : other;\n      }\n      if (typeof value != 'string') {\n        return value === 0 ? value : +value;\n      }\n      value = baseTrim(value);\n      var isBinary = reIsBinary.test(value);\n      return (isBinary || reIsOctal.test(value))\n        ? freeParseInt(value.slice(2), isBinary ? 2 : 8)\n        : (reIsBadHex.test(value) ? NAN : +value);\n    }\n\n    /**\n     * Converts `value` to a plain object flattening inherited enumerable string\n     * keyed properties of `value` to own properties of the plain object.\n     *\n     * @static\n     * @memberOf _\n     * @since 3.0.0\n     * @category Lang\n     * @param {*} value The value to convert.\n     * @returns {Object} Returns the converted plain object.\n     * @example\n     *\n     * function Foo() {\n     *   this.b = 2;\n     * }\n     *\n     * Foo.prototype.c = 3;\n     *\n     * _.assign({ 'a': 1 }, new Foo);\n     * // => { 'a': 1, 'b': 2 }\n     *\n     * _.assign({ 'a': 1 }, _.toPlainObject(new Foo));\n     * // => { 'a': 1, 'b': 2, 'c': 3 }\n     */\n    function toPlainObject(value) {\n      return copyObject(value, keysIn(value));\n    }\n\n    /**\n     * Converts `value` to a safe integer. A safe integer can be compared and\n     * represented correctly.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Lang\n     * @param {*} value The value to convert.\n     * @returns {number} Returns the converted integer.\n     * @example\n     *\n     * _.toSafeInteger(3.2);\n     * // => 3\n     *\n     * _.toSafeInteger(Number.MIN_VALUE);\n     * // => 0\n     *\n     * _.toSafeInteger(Infinity);\n     * // => 9007199254740991\n     *\n     * _.toSafeInteger('3.2');\n     * // => 3\n     */\n    function toSafeInteger(value) {\n      return value\n        ? baseClamp(toInteger(value), -MAX_SAFE_INTEGER, MAX_SAFE_INTEGER)\n        : (value === 0 ? value : 0);\n    }\n\n    /**\n     * Converts `value` to a string. An empty string is returned for `null`\n     * and `undefined` values. The sign of `-0` is preserved.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Lang\n     * @param {*} value The value to convert.\n     * @returns {string} Returns the converted string.\n     * @example\n     *\n     * _.toString(null);\n     * // => ''\n     *\n     * _.toString(-0);\n     * // => '-0'\n     *\n     * _.toString([1, 2, 3]);\n     * // => '1,2,3'\n     */\n    function toString(value) {\n      return value == null ? '' : baseToString(value);\n    }\n\n    /*------------------------------------------------------------------------*/\n\n    /**\n     * Assigns own enumerable string keyed properties of source objects to the\n     * destination object. Source objects are applied from left to right.\n     * Subsequent sources overwrite property assignments of previous sources.\n     *\n     * **Note:** This method mutates `object` and is loosely based on\n     * [`Object.assign`](https://mdn.io/Object/assign).\n     *\n     * @static\n     * @memberOf _\n     * @since 0.10.0\n     * @category Object\n     * @param {Object} object The destination object.\n     * @param {...Object} [sources] The source objects.\n     * @returns {Object} Returns `object`.\n     * @see _.assignIn\n     * @example\n     *\n     * function Foo() {\n     *   this.a = 1;\n     * }\n     *\n     * function Bar() {\n     *   this.c = 3;\n     * }\n     *\n     * Foo.prototype.b = 2;\n     * Bar.prototype.d = 4;\n     *\n     * _.assign({ 'a': 0 }, new Foo, new Bar);\n     * // => { 'a': 1, 'c': 3 }\n     */\n    var assign = createAssigner(function(object, source) {\n      if (isPrototype(source) || isArrayLike(source)) {\n        copyObject(source, keys(source), object);\n        return;\n      }\n      for (var key in source) {\n        if (hasOwnProperty.call(source, key)) {\n          assignValue(object, key, source[key]);\n        }\n      }\n    });\n\n    /**\n     * This method is like `_.assign` except that it iterates over own and\n     * inherited source properties.\n     *\n     * **Note:** This method mutates `object`.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @alias extend\n     * @category Object\n     * @param {Object} object The destination object.\n     * @param {...Object} [sources] The source objects.\n     * @returns {Object} Returns `object`.\n     * @see _.assign\n     * @example\n     *\n     * function Foo() {\n     *   this.a = 1;\n     * }\n     *\n     * function Bar() {\n     *   this.c = 3;\n     * }\n     *\n     * Foo.prototype.b = 2;\n     * Bar.prototype.d = 4;\n     *\n     * _.assignIn({ 'a': 0 }, new Foo, new Bar);\n     * // => { 'a': 1, 'b': 2, 'c': 3, 'd': 4 }\n     */\n    var assignIn = createAssigner(function(object, source) {\n      copyObject(source, keysIn(source), object);\n    });\n\n    /**\n     * This method is like `_.assignIn` except that it accepts `customizer`\n     * which is invoked to produce the assigned values. If `customizer` returns\n     * `undefined`, assignment is handled by the method instead. The `customizer`\n     * is invoked with five arguments: (objValue, srcValue, key, object, source).\n     *\n     * **Note:** This method mutates `object`.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @alias extendWith\n     * @category Object\n     * @param {Object} object The destination object.\n     * @param {...Object} sources The source objects.\n     * @param {Function} [customizer] The function to customize assigned values.\n     * @returns {Object} Returns `object`.\n     * @see _.assignWith\n     * @example\n     *\n     * function customizer(objValue, srcValue) {\n     *   return _.isUndefined(objValue) ? srcValue : objValue;\n     * }\n     *\n     * var defaults = _.partialRight(_.assignInWith, customizer);\n     *\n     * defaults({ 'a': 1 }, { 'b': 2 }, { 'a': 3 });\n     * // => { 'a': 1, 'b': 2 }\n     */\n    var assignInWith = createAssigner(function(object, source, srcIndex, customizer) {\n      copyObject(source, keysIn(source), object, customizer);\n    });\n\n    /**\n     * This method is like `_.assign` except that it accepts `customizer`\n     * which is invoked to produce the assigned values. If `customizer` returns\n     * `undefined`, assignment is handled by the method instead. The `customizer`\n     * is invoked with five arguments: (objValue, srcValue, key, object, source).\n     *\n     * **Note:** This method mutates `object`.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Object\n     * @param {Object} object The destination object.\n     * @param {...Object} sources The source objects.\n     * @param {Function} [customizer] The function to customize assigned values.\n     * @returns {Object} Returns `object`.\n     * @see _.assignInWith\n     * @example\n     *\n     * function customizer(objValue, srcValue) {\n     *   return _.isUndefined(objValue) ? srcValue : objValue;\n     * }\n     *\n     * var defaults = _.partialRight(_.assignWith, customizer);\n     *\n     * defaults({ 'a': 1 }, { 'b': 2 }, { 'a': 3 });\n     * // => { 'a': 1, 'b': 2 }\n     */\n    var assignWith = createAssigner(function(object, source, srcIndex, customizer) {\n      copyObject(source, keys(source), object, customizer);\n    });\n\n    /**\n     * Creates an array of values corresponding to `paths` of `object`.\n     *\n     * @static\n     * @memberOf _\n     * @since 1.0.0\n     * @category Object\n     * @param {Object} object The object to iterate over.\n     * @param {...(string|string[])} [paths] The property paths to pick.\n     * @returns {Array} Returns the picked values.\n     * @example\n     *\n     * var object = { 'a': [{ 'b': { 'c': 3 } }, 4] };\n     *\n     * _.at(object, ['a[0].b.c', 'a[1]']);\n     * // => [3, 4]\n     */\n    var at = flatRest(baseAt);\n\n    /**\n     * Creates an object that inherits from the `prototype` object. If a\n     * `properties` object is given, its own enumerable string keyed properties\n     * are assigned to the created object.\n     *\n     * @static\n     * @memberOf _\n     * @since 2.3.0\n     * @category Object\n     * @param {Object} prototype The object to inherit from.\n     * @param {Object} [properties] The properties to assign to the object.\n     * @returns {Object} Returns the new object.\n     * @example\n     *\n     * function Shape() {\n     *   this.x = 0;\n     *   this.y = 0;\n     * }\n     *\n     * function Circle() {\n     *   Shape.call(this);\n     * }\n     *\n     * Circle.prototype = _.create(Shape.prototype, {\n     *   'constructor': Circle\n     * });\n     *\n     * var circle = new Circle;\n     * circle instanceof Circle;\n     * // => true\n     *\n     * circle instanceof Shape;\n     * // => true\n     */\n    function create(prototype, properties) {\n      var result = baseCreate(prototype);\n      return properties == null ? result : baseAssign(result, properties);\n    }\n\n    /**\n     * Assigns own and inherited enumerable string keyed properties of source\n     * objects to the destination object for all destination properties that\n     * resolve to `undefined`. Source objects are applied from left to right.\n     * Once a property is set, additional values of the same property are ignored.\n     *\n     * **Note:** This method mutates `object`.\n     *\n     * @static\n     * @since 0.1.0\n     * @memberOf _\n     * @category Object\n     * @param {Object} object The destination object.\n     * @param {...Object} [sources] The source objects.\n     * @returns {Object} Returns `object`.\n     * @see _.defaultsDeep\n     * @example\n     *\n     * _.defaults({ 'a': 1 }, { 'b': 2 }, { 'a': 3 });\n     * // => { 'a': 1, 'b': 2 }\n     */\n    var defaults = baseRest(function(object, sources) {\n      object = Object(object);\n\n      var index = -1;\n      var length = sources.length;\n      var guard = length > 2 ? sources[2] : undefined;\n\n      if (guard && isIterateeCall(sources[0], sources[1], guard)) {\n        length = 1;\n      }\n\n      while (++index < length) {\n        var source = sources[index];\n        var props = keysIn(source);\n        var propsIndex = -1;\n        var propsLength = props.length;\n\n        while (++propsIndex < propsLength) {\n          var key = props[propsIndex];\n          var value = object[key];\n\n          if (value === undefined ||\n              (eq(value, objectProto[key]) && !hasOwnProperty.call(object, key))) {\n            object[key] = source[key];\n          }\n        }\n      }\n\n      return object;\n    });\n\n    /**\n     * This method is like `_.defaults` except that it recursively assigns\n     * default properties.\n     *\n     * **Note:** This method mutates `object`.\n     *\n     * @static\n     * @memberOf _\n     * @since 3.10.0\n     * @category Object\n     * @param {Object} object The destination object.\n     * @param {...Object} [sources] The source objects.\n     * @returns {Object} Returns `object`.\n     * @see _.defaults\n     * @example\n     *\n     * _.defaultsDeep({ 'a': { 'b': 2 } }, { 'a': { 'b': 1, 'c': 3 } });\n     * // => { 'a': { 'b': 2, 'c': 3 } }\n     */\n    var defaultsDeep = baseRest(function(args) {\n      args.push(undefined, customDefaultsMerge);\n      return apply(mergeWith, undefined, args);\n    });\n\n    /**\n     * This method is like `_.find` except that it returns the key of the first\n     * element `predicate` returns truthy for instead of the element itself.\n     *\n     * @static\n     * @memberOf _\n     * @since 1.1.0\n     * @category Object\n     * @param {Object} object The object to inspect.\n     * @param {Function} [predicate=_.identity] The function invoked per iteration.\n     * @returns {string|undefined} Returns the key of the matched element,\n     *  else `undefined`.\n     * @example\n     *\n     * var users = {\n     *   'barney':  { 'age': 36, 'active': true },\n     *   'fred':    { 'age': 40, 'active': false },\n     *   'pebbles': { 'age': 1,  'active': true }\n     * };\n     *\n     * _.findKey(users, function(o) { return o.age < 40; });\n     * // => 'barney' (iteration order is not guaranteed)\n     *\n     * // The `_.matches` iteratee shorthand.\n     * _.findKey(users, { 'age': 1, 'active': true });\n     * // => 'pebbles'\n     *\n     * // The `_.matchesProperty` iteratee shorthand.\n     * _.findKey(users, ['active', false]);\n     * // => 'fred'\n     *\n     * // The `_.property` iteratee shorthand.\n     * _.findKey(users, 'active');\n     * // => 'barney'\n     */\n    function findKey(object, predicate) {\n      return baseFindKey(object, getIteratee(predicate, 3), baseForOwn);\n    }\n\n    /**\n     * This method is like `_.findKey` except that it iterates over elements of\n     * a collection in the opposite order.\n     *\n     * @static\n     * @memberOf _\n     * @since 2.0.0\n     * @category Object\n     * @param {Object} object The object to inspect.\n     * @param {Function} [predicate=_.identity] The function invoked per iteration.\n     * @returns {string|undefined} Returns the key of the matched element,\n     *  else `undefined`.\n     * @example\n     *\n     * var users = {\n     *   'barney':  { 'age': 36, 'active': true },\n     *   'fred':    { 'age': 40, 'active': false },\n     *   'pebbles': { 'age': 1,  'active': true }\n     * };\n     *\n     * _.findLastKey(users, function(o) { return o.age < 40; });\n     * // => returns 'pebbles' assuming `_.findKey` returns 'barney'\n     *\n     * // The `_.matches` iteratee shorthand.\n     * _.findLastKey(users, { 'age': 36, 'active': true });\n     * // => 'barney'\n     *\n     * // The `_.matchesProperty` iteratee shorthand.\n     * _.findLastKey(users, ['active', false]);\n     * // => 'fred'\n     *\n     * // The `_.property` iteratee shorthand.\n     * _.findLastKey(users, 'active');\n     * // => 'pebbles'\n     */\n    function findLastKey(object, predicate) {\n      return baseFindKey(object, getIteratee(predicate, 3), baseForOwnRight);\n    }\n\n    /**\n     * Iterates over own and inherited enumerable string keyed properties of an\n     * object and invokes `iteratee` for each property. The iteratee is invoked\n     * with three arguments: (value, key, object). Iteratee functions may exit\n     * iteration early by explicitly returning `false`.\n     *\n     * @static\n     * @memberOf _\n     * @since 0.3.0\n     * @category Object\n     * @param {Object} object The object to iterate over.\n     * @param {Function} [iteratee=_.identity] The function invoked per iteration.\n     * @returns {Object} Returns `object`.\n     * @see _.forInRight\n     * @example\n     *\n     * function Foo() {\n     *   this.a = 1;\n     *   this.b = 2;\n     * }\n     *\n     * Foo.prototype.c = 3;\n     *\n     * _.forIn(new Foo, function(value, key) {\n     *   console.log(key);\n     * });\n     * // => Logs 'a', 'b', then 'c' (iteration order is not guaranteed).\n     */\n    function forIn(object, iteratee) {\n      return object == null\n        ? object\n        : baseFor(object, getIteratee(iteratee, 3), keysIn);\n    }\n\n    /**\n     * This method is like `_.forIn` except that it iterates over properties of\n     * `object` in the opposite order.\n     *\n     * @static\n     * @memberOf _\n     * @since 2.0.0\n     * @category Object\n     * @param {Object} object The object to iterate over.\n     * @param {Function} [iteratee=_.identity] The function invoked per iteration.\n     * @returns {Object} Returns `object`.\n     * @see _.forIn\n     * @example\n     *\n     * function Foo() {\n     *   this.a = 1;\n     *   this.b = 2;\n     * }\n     *\n     * Foo.prototype.c = 3;\n     *\n     * _.forInRight(new Foo, function(value, key) {\n     *   console.log(key);\n     * });\n     * // => Logs 'c', 'b', then 'a' assuming `_.forIn` logs 'a', 'b', then 'c'.\n     */\n    function forInRight(object, iteratee) {\n      return object == null\n        ? object\n        : baseForRight(object, getIteratee(iteratee, 3), keysIn);\n    }\n\n    /**\n     * Iterates over own enumerable string keyed properties of an object and\n     * invokes `iteratee` for each property. The iteratee is invoked with three\n     * arguments: (value, key, object). Iteratee functions may exit iteration\n     * early by explicitly returning `false`.\n     *\n     * @static\n     * @memberOf _\n     * @since 0.3.0\n     * @category Object\n     * @param {Object} object The object to iterate over.\n     * @param {Function} [iteratee=_.identity] The function invoked per iteration.\n     * @returns {Object} Returns `object`.\n     * @see _.forOwnRight\n     * @example\n     *\n     * function Foo() {\n     *   this.a = 1;\n     *   this.b = 2;\n     * }\n     *\n     * Foo.prototype.c = 3;\n     *\n     * _.forOwn(new Foo, function(value, key) {\n     *   console.log(key);\n     * });\n     * // => Logs 'a' then 'b' (iteration order is not guaranteed).\n     */\n    function forOwn(object, iteratee) {\n      return object && baseForOwn(object, getIteratee(iteratee, 3));\n    }\n\n    /**\n     * This method is like `_.forOwn` except that it iterates over properties of\n     * `object` in the opposite order.\n     *\n     * @static\n     * @memberOf _\n     * @since 2.0.0\n     * @category Object\n     * @param {Object} object The object to iterate over.\n     * @param {Function} [iteratee=_.identity] The function invoked per iteration.\n     * @returns {Object} Returns `object`.\n     * @see _.forOwn\n     * @example\n     *\n     * function Foo() {\n     *   this.a = 1;\n     *   this.b = 2;\n     * }\n     *\n     * Foo.prototype.c = 3;\n     *\n     * _.forOwnRight(new Foo, function(value, key) {\n     *   console.log(key);\n     * });\n     * // => Logs 'b' then 'a' assuming `_.forOwn` logs 'a' then 'b'.\n     */\n    function forOwnRight(object, iteratee) {\n      return object && baseForOwnRight(object, getIteratee(iteratee, 3));\n    }\n\n    /**\n     * Creates an array of function property names from own enumerable properties\n     * of `object`.\n     *\n     * @static\n     * @since 0.1.0\n     * @memberOf _\n     * @category Object\n     * @param {Object} object The object to inspect.\n     * @returns {Array} Returns the function names.\n     * @see _.functionsIn\n     * @example\n     *\n     * function Foo() {\n     *   this.a = _.constant('a');\n     *   this.b = _.constant('b');\n     * }\n     *\n     * Foo.prototype.c = _.constant('c');\n     *\n     * _.functions(new Foo);\n     * // => ['a', 'b']\n     */\n    function functions(object) {\n      return object == null ? [] : baseFunctions(object, keys(object));\n    }\n\n    /**\n     * Creates an array of function property names from own and inherited\n     * enumerable properties of `object`.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Object\n     * @param {Object} object The object to inspect.\n     * @returns {Array} Returns the function names.\n     * @see _.functions\n     * @example\n     *\n     * function Foo() {\n     *   this.a = _.constant('a');\n     *   this.b = _.constant('b');\n     * }\n     *\n     * Foo.prototype.c = _.constant('c');\n     *\n     * _.functionsIn(new Foo);\n     * // => ['a', 'b', 'c']\n     */\n    function functionsIn(object) {\n      return object == null ? [] : baseFunctions(object, keysIn(object));\n    }\n\n    /**\n     * Gets the value at `path` of `object`. If the resolved value is\n     * `undefined`, the `defaultValue` is returned in its place.\n     *\n     * @static\n     * @memberOf _\n     * @since 3.7.0\n     * @category Object\n     * @param {Object} object The object to query.\n     * @param {Array|string} path The path of the property to get.\n     * @param {*} [defaultValue] The value returned for `undefined` resolved values.\n     * @returns {*} Returns the resolved value.\n     * @example\n     *\n     * var object = { 'a': [{ 'b': { 'c': 3 } }] };\n     *\n     * _.get(object, 'a[0].b.c');\n     * // => 3\n     *\n     * _.get(object, ['a', '0', 'b', 'c']);\n     * // => 3\n     *\n     * _.get(object, 'a.b.c', 'default');\n     * // => 'default'\n     */\n    function get(object, path, defaultValue) {\n      var result = object == null ? undefined : baseGet(object, path);\n      return result === undefined ? defaultValue : result;\n    }\n\n    /**\n     * Checks if `path` is a direct property of `object`.\n     *\n     * @static\n     * @since 0.1.0\n     * @memberOf _\n     * @category Object\n     * @param {Object} object The object to query.\n     * @param {Array|string} path The path to check.\n     * @returns {boolean} Returns `true` if `path` exists, else `false`.\n     * @example\n     *\n     * var object = { 'a': { 'b': 2 } };\n     * var other = _.create({ 'a': _.create({ 'b': 2 }) });\n     *\n     * _.has(object, 'a');\n     * // => true\n     *\n     * _.has(object, 'a.b');\n     * // => true\n     *\n     * _.has(object, ['a', 'b']);\n     * // => true\n     *\n     * _.has(other, 'a');\n     * // => false\n     */\n    function has(object, path) {\n      return object != null && hasPath(object, path, baseHas);\n    }\n\n    /**\n     * Checks if `path` is a direct or inherited property of `object`.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Object\n     * @param {Object} object The object to query.\n     * @param {Array|string} path The path to check.\n     * @returns {boolean} Returns `true` if `path` exists, else `false`.\n     * @example\n     *\n     * var object = _.create({ 'a': _.create({ 'b': 2 }) });\n     *\n     * _.hasIn(object, 'a');\n     * // => true\n     *\n     * _.hasIn(object, 'a.b');\n     * // => true\n     *\n     * _.hasIn(object, ['a', 'b']);\n     * // => true\n     *\n     * _.hasIn(object, 'b');\n     * // => false\n     */\n    function hasIn(object, path) {\n      return object != null && hasPath(object, path, baseHasIn);\n    }\n\n    /**\n     * Creates an object composed of the inverted keys and values of `object`.\n     * If `object` contains duplicate values, subsequent values overwrite\n     * property assignments of previous values.\n     *\n     * @static\n     * @memberOf _\n     * @since 0.7.0\n     * @category Object\n     * @param {Object} object The object to invert.\n     * @returns {Object} Returns the new inverted object.\n     * @example\n     *\n     * var object = { 'a': 1, 'b': 2, 'c': 1 };\n     *\n     * _.invert(object);\n     * // => { '1': 'c', '2': 'b' }\n     */\n    var invert = createInverter(function(result, value, key) {\n      if (value != null &&\n          typeof value.toString != 'function') {\n        value = nativeObjectToString.call(value);\n      }\n\n      result[value] = key;\n    }, constant(identity));\n\n    /**\n     * This method is like `_.invert` except that the inverted object is generated\n     * from the results of running each element of `object` thru `iteratee`. The\n     * corresponding inverted value of each inverted key is an array of keys\n     * responsible for generating the inverted value. The iteratee is invoked\n     * with one argument: (value).\n     *\n     * @static\n     * @memberOf _\n     * @since 4.1.0\n     * @category Object\n     * @param {Object} object The object to invert.\n     * @param {Function} [iteratee=_.identity] The iteratee invoked per element.\n     * @returns {Object} Returns the new inverted object.\n     * @example\n     *\n     * var object = { 'a': 1, 'b': 2, 'c': 1 };\n     *\n     * _.invertBy(object);\n     * // => { '1': ['a', 'c'], '2': ['b'] }\n     *\n     * _.invertBy(object, function(value) {\n     *   return 'group' + value;\n     * });\n     * // => { 'group1': ['a', 'c'], 'group2': ['b'] }\n     */\n    var invertBy = createInverter(function(result, value, key) {\n      if (value != null &&\n          typeof value.toString != 'function') {\n        value = nativeObjectToString.call(value);\n      }\n\n      if (hasOwnProperty.call(result, value)) {\n        result[value].push(key);\n      } else {\n        result[value] = [key];\n      }\n    }, getIteratee);\n\n    /**\n     * Invokes the method at `path` of `object`.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Object\n     * @param {Object} object The object to query.\n     * @param {Array|string} path The path of the method to invoke.\n     * @param {...*} [args] The arguments to invoke the method with.\n     * @returns {*} Returns the result of the invoked method.\n     * @example\n     *\n     * var object = { 'a': [{ 'b': { 'c': [1, 2, 3, 4] } }] };\n     *\n     * _.invoke(object, 'a[0].b.c.slice', 1, 3);\n     * // => [2, 3]\n     */\n    var invoke = baseRest(baseInvoke);\n\n    /**\n     * Creates an array of the own enumerable property names of `object`.\n     *\n     * **Note:** Non-object values are coerced to objects. See the\n     * [ES spec](http://ecma-international.org/ecma-262/7.0/#sec-object.keys)\n     * for more details.\n     *\n     * @static\n     * @since 0.1.0\n     * @memberOf _\n     * @category Object\n     * @param {Object} object The object to query.\n     * @returns {Array} Returns the array of property names.\n     * @example\n     *\n     * function Foo() {\n     *   this.a = 1;\n     *   this.b = 2;\n     * }\n     *\n     * Foo.prototype.c = 3;\n     *\n     * _.keys(new Foo);\n     * // => ['a', 'b'] (iteration order is not guaranteed)\n     *\n     * _.keys('hi');\n     * // => ['0', '1']\n     */\n    function keys(object) {\n      return isArrayLike(object) ? arrayLikeKeys(object) : baseKeys(object);\n    }\n\n    /**\n     * Creates an array of the own and inherited enumerable property names of `object`.\n     *\n     * **Note:** Non-object values are coerced to objects.\n     *\n     * @static\n     * @memberOf _\n     * @since 3.0.0\n     * @category Object\n     * @param {Object} object The object to query.\n     * @returns {Array} Returns the array of property names.\n     * @example\n     *\n     * function Foo() {\n     *   this.a = 1;\n     *   this.b = 2;\n     * }\n     *\n     * Foo.prototype.c = 3;\n     *\n     * _.keysIn(new Foo);\n     * // => ['a', 'b', 'c'] (iteration order is not guaranteed)\n     */\n    function keysIn(object) {\n      return isArrayLike(object) ? arrayLikeKeys(object, true) : baseKeysIn(object);\n    }\n\n    /**\n     * The opposite of `_.mapValues`; this method creates an object with the\n     * same values as `object` and keys generated by running each own enumerable\n     * string keyed property of `object` thru `iteratee`. The iteratee is invoked\n     * with three arguments: (value, key, object).\n     *\n     * @static\n     * @memberOf _\n     * @since 3.8.0\n     * @category Object\n     * @param {Object} object The object to iterate over.\n     * @param {Function} [iteratee=_.identity] The function invoked per iteration.\n     * @returns {Object} Returns the new mapped object.\n     * @see _.mapValues\n     * @example\n     *\n     * _.mapKeys({ 'a': 1, 'b': 2 }, function(value, key) {\n     *   return key + value;\n     * });\n     * // => { 'a1': 1, 'b2': 2 }\n     */\n    function mapKeys(object, iteratee) {\n      var result = {};\n      iteratee = getIteratee(iteratee, 3);\n\n      baseForOwn(object, function(value, key, object) {\n        baseAssignValue(result, iteratee(value, key, object), value);\n      });\n      return result;\n    }\n\n    /**\n     * Creates an object with the same keys as `object` and values generated\n     * by running each own enumerable string keyed property of `object` thru\n     * `iteratee`. The iteratee is invoked with three arguments:\n     * (value, key, object).\n     *\n     * @static\n     * @memberOf _\n     * @since 2.4.0\n     * @category Object\n     * @param {Object} object The object to iterate over.\n     * @param {Function} [iteratee=_.identity] The function invoked per iteration.\n     * @returns {Object} Returns the new mapped object.\n     * @see _.mapKeys\n     * @example\n     *\n     * var users = {\n     *   'fred':    { 'user': 'fred',    'age': 40 },\n     *   'pebbles': { 'user': 'pebbles', 'age': 1 }\n     * };\n     *\n     * _.mapValues(users, function(o) { return o.age; });\n     * // => { 'fred': 40, 'pebbles': 1 } (iteration order is not guaranteed)\n     *\n     * // The `_.property` iteratee shorthand.\n     * _.mapValues(users, 'age');\n     * // => { 'fred': 40, 'pebbles': 1 } (iteration order is not guaranteed)\n     */\n    function mapValues(object, iteratee) {\n      var result = {};\n      iteratee = getIteratee(iteratee, 3);\n\n      baseForOwn(object, function(value, key, object) {\n        baseAssignValue(result, key, iteratee(value, key, object));\n      });\n      return result;\n    }\n\n    /**\n     * This method is like `_.assign` except that it recursively merges own and\n     * inherited enumerable string keyed properties of source objects into the\n     * destination object. Source properties that resolve to `undefined` are\n     * skipped if a destination value exists. Array and plain object properties\n     * are merged recursively. Other objects and value types are overridden by\n     * assignment. Source objects are applied from left to right. Subsequent\n     * sources overwrite property assignments of previous sources.\n     *\n     * **Note:** This method mutates `object`.\n     *\n     * @static\n     * @memberOf _\n     * @since 0.5.0\n     * @category Object\n     * @param {Object} object The destination object.\n     * @param {...Object} [sources] The source objects.\n     * @returns {Object} Returns `object`.\n     * @example\n     *\n     * var object = {\n     *   'a': [{ 'b': 2 }, { 'd': 4 }]\n     * };\n     *\n     * var other = {\n     *   'a': [{ 'c': 3 }, { 'e': 5 }]\n     * };\n     *\n     * _.merge(object, other);\n     * // => { 'a': [{ 'b': 2, 'c': 3 }, { 'd': 4, 'e': 5 }] }\n     */\n    var merge = createAssigner(function(object, source, srcIndex) {\n      baseMerge(object, source, srcIndex);\n    });\n\n    /**\n     * This method is like `_.merge` except that it accepts `customizer` which\n     * is invoked to produce the merged values of the destination and source\n     * properties. If `customizer` returns `undefined`, merging is handled by the\n     * method instead. The `customizer` is invoked with six arguments:\n     * (objValue, srcValue, key, object, source, stack).\n     *\n     * **Note:** This method mutates `object`.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Object\n     * @param {Object} object The destination object.\n     * @param {...Object} sources The source objects.\n     * @param {Function} customizer The function to customize assigned values.\n     * @returns {Object} Returns `object`.\n     * @example\n     *\n     * function customizer(objValue, srcValue) {\n     *   if (_.isArray(objValue)) {\n     *     return objValue.concat(srcValue);\n     *   }\n     * }\n     *\n     * var object = { 'a': [1], 'b': [2] };\n     * var other = { 'a': [3], 'b': [4] };\n     *\n     * _.mergeWith(object, other, customizer);\n     * // => { 'a': [1, 3], 'b': [2, 4] }\n     */\n    var mergeWith = createAssigner(function(object, source, srcIndex, customizer) {\n      baseMerge(object, source, srcIndex, customizer);\n    });\n\n    /**\n     * The opposite of `_.pick`; this method creates an object composed of the\n     * own and inherited enumerable property paths of `object` that are not omitted.\n     *\n     * **Note:** This method is considerably slower than `_.pick`.\n     *\n     * @static\n     * @since 0.1.0\n     * @memberOf _\n     * @category Object\n     * @param {Object} object The source object.\n     * @param {...(string|string[])} [paths] The property paths to omit.\n     * @returns {Object} Returns the new object.\n     * @example\n     *\n     * var object = { 'a': 1, 'b': '2', 'c': 3 };\n     *\n     * _.omit(object, ['a', 'c']);\n     * // => { 'b': '2' }\n     */\n    var omit = flatRest(function(object, paths) {\n      var result = {};\n      if (object == null) {\n        return result;\n      }\n      var isDeep = false;\n      paths = arrayMap(paths, function(path) {\n        path = castPath(path, object);\n        isDeep || (isDeep = path.length > 1);\n        return path;\n      });\n      copyObject(object, getAllKeysIn(object), result);\n      if (isDeep) {\n        result = baseClone(result, CLONE_DEEP_FLAG | CLONE_FLAT_FLAG | CLONE_SYMBOLS_FLAG, customOmitClone);\n      }\n      var length = paths.length;\n      while (length--) {\n        baseUnset(result, paths[length]);\n      }\n      return result;\n    });\n\n    /**\n     * The opposite of `_.pickBy`; this method creates an object composed of\n     * the own and inherited enumerable string keyed properties of `object` that\n     * `predicate` doesn't return truthy for. The predicate is invoked with two\n     * arguments: (value, key).\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Object\n     * @param {Object} object The source object.\n     * @param {Function} [predicate=_.identity] The function invoked per property.\n     * @returns {Object} Returns the new object.\n     * @example\n     *\n     * var object = { 'a': 1, 'b': '2', 'c': 3 };\n     *\n     * _.omitBy(object, _.isNumber);\n     * // => { 'b': '2' }\n     */\n    function omitBy(object, predicate) {\n      return pickBy(object, negate(getIteratee(predicate)));\n    }\n\n    /**\n     * Creates an object composed of the picked `object` properties.\n     *\n     * @static\n     * @since 0.1.0\n     * @memberOf _\n     * @category Object\n     * @param {Object} object The source object.\n     * @param {...(string|string[])} [paths] The property paths to pick.\n     * @returns {Object} Returns the new object.\n     * @example\n     *\n     * var object = { 'a': 1, 'b': '2', 'c': 3 };\n     *\n     * _.pick(object, ['a', 'c']);\n     * // => { 'a': 1, 'c': 3 }\n     */\n    var pick = flatRest(function(object, paths) {\n      return object == null ? {} : basePick(object, paths);\n    });\n\n    /**\n     * Creates an object composed of the `object` properties `predicate` returns\n     * truthy for. The predicate is invoked with two arguments: (value, key).\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Object\n     * @param {Object} object The source object.\n     * @param {Function} [predicate=_.identity] The function invoked per property.\n     * @returns {Object} Returns the new object.\n     * @example\n     *\n     * var object = { 'a': 1, 'b': '2', 'c': 3 };\n     *\n     * _.pickBy(object, _.isNumber);\n     * // => { 'a': 1, 'c': 3 }\n     */\n    function pickBy(object, predicate) {\n      if (object == null) {\n        return {};\n      }\n      var props = arrayMap(getAllKeysIn(object), function(prop) {\n        return [prop];\n      });\n      predicate = getIteratee(predicate);\n      return basePickBy(object, props, function(value, path) {\n        return predicate(value, path[0]);\n      });\n    }\n\n    /**\n     * This method is like `_.get` except that if the resolved value is a\n     * function it's invoked with the `this` binding of its parent object and\n     * its result is returned.\n     *\n     * @static\n     * @since 0.1.0\n     * @memberOf _\n     * @category Object\n     * @param {Object} object The object to query.\n     * @param {Array|string} path The path of the property to resolve.\n     * @param {*} [defaultValue] The value returned for `undefined` resolved values.\n     * @returns {*} Returns the resolved value.\n     * @example\n     *\n     * var object = { 'a': [{ 'b': { 'c1': 3, 'c2': _.constant(4) } }] };\n     *\n     * _.result(object, 'a[0].b.c1');\n     * // => 3\n     *\n     * _.result(object, 'a[0].b.c2');\n     * // => 4\n     *\n     * _.result(object, 'a[0].b.c3', 'default');\n     * // => 'default'\n     *\n     * _.result(object, 'a[0].b.c3', _.constant('default'));\n     * // => 'default'\n     */\n    function result(object, path, defaultValue) {\n      path = castPath(path, object);\n\n      var index = -1,\n          length = path.length;\n\n      // Ensure the loop is entered when path is empty.\n      if (!length) {\n        length = 1;\n        object = undefined;\n      }\n      while (++index < length) {\n        var value = object == null ? undefined : object[toKey(path[index])];\n        if (value === undefined) {\n          index = length;\n          value = defaultValue;\n        }\n        object = isFunction(value) ? value.call(object) : value;\n      }\n      return object;\n    }\n\n    /**\n     * Sets the value at `path` of `object`. If a portion of `path` doesn't exist,\n     * it's created. Arrays are created for missing index properties while objects\n     * are created for all other missing properties. Use `_.setWith` to customize\n     * `path` creation.\n     *\n     * **Note:** This method mutates `object`.\n     *\n     * @static\n     * @memberOf _\n     * @since 3.7.0\n     * @category Object\n     * @param {Object} object The object to modify.\n     * @param {Array|string} path The path of the property to set.\n     * @param {*} value The value to set.\n     * @returns {Object} Returns `object`.\n     * @example\n     *\n     * var object = { 'a': [{ 'b': { 'c': 3 } }] };\n     *\n     * _.set(object, 'a[0].b.c', 4);\n     * console.log(object.a[0].b.c);\n     * // => 4\n     *\n     * _.set(object, ['x', '0', 'y', 'z'], 5);\n     * console.log(object.x[0].y.z);\n     * // => 5\n     */\n    function set(object, path, value) {\n      return object == null ? object : baseSet(object, path, value);\n    }\n\n    /**\n     * This method is like `_.set` except that it accepts `customizer` which is\n     * invoked to produce the objects of `path`.  If `customizer` returns `undefined`\n     * path creation is handled by the method instead. The `customizer` is invoked\n     * with three arguments: (nsValue, key, nsObject).\n     *\n     * **Note:** This method mutates `object`.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Object\n     * @param {Object} object The object to modify.\n     * @param {Array|string} path The path of the property to set.\n     * @param {*} value The value to set.\n     * @param {Function} [customizer] The function to customize assigned values.\n     * @returns {Object} Returns `object`.\n     * @example\n     *\n     * var object = {};\n     *\n     * _.setWith(object, '[0][1]', 'a', Object);\n     * // => { '0': { '1': 'a' } }\n     */\n    function setWith(object, path, value, customizer) {\n      customizer = typeof customizer == 'function' ? customizer : undefined;\n      return object == null ? object : baseSet(object, path, value, customizer);\n    }\n\n    /**\n     * Creates an array of own enumerable string keyed-value pairs for `object`\n     * which can be consumed by `_.fromPairs`. If `object` is a map or set, its\n     * entries are returned.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @alias entries\n     * @category Object\n     * @param {Object} object The object to query.\n     * @returns {Array} Returns the key-value pairs.\n     * @example\n     *\n     * function Foo() {\n     *   this.a = 1;\n     *   this.b = 2;\n     * }\n     *\n     * Foo.prototype.c = 3;\n     *\n     * _.toPairs(new Foo);\n     * // => [['a', 1], ['b', 2]] (iteration order is not guaranteed)\n     */\n    var toPairs = createToPairs(keys);\n\n    /**\n     * Creates an array of own and inherited enumerable string keyed-value pairs\n     * for `object` which can be consumed by `_.fromPairs`. If `object` is a map\n     * or set, its entries are returned.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @alias entriesIn\n     * @category Object\n     * @param {Object} object The object to query.\n     * @returns {Array} Returns the key-value pairs.\n     * @example\n     *\n     * function Foo() {\n     *   this.a = 1;\n     *   this.b = 2;\n     * }\n     *\n     * Foo.prototype.c = 3;\n     *\n     * _.toPairsIn(new Foo);\n     * // => [['a', 1], ['b', 2], ['c', 3]] (iteration order is not guaranteed)\n     */\n    var toPairsIn = createToPairs(keysIn);\n\n    /**\n     * An alternative to `_.reduce`; this method transforms `object` to a new\n     * `accumulator` object which is the result of running each of its own\n     * enumerable string keyed properties thru `iteratee`, with each invocation\n     * potentially mutating the `accumulator` object. If `accumulator` is not\n     * provided, a new object with the same `[[Prototype]]` will be used. The\n     * iteratee is invoked with four arguments: (accumulator, value, key, object).\n     * Iteratee functions may exit iteration early by explicitly returning `false`.\n     *\n     * @static\n     * @memberOf _\n     * @since 1.3.0\n     * @category Object\n     * @param {Object} object The object to iterate over.\n     * @param {Function} [iteratee=_.identity] The function invoked per iteration.\n     * @param {*} [accumulator] The custom accumulator value.\n     * @returns {*} Returns the accumulated value.\n     * @example\n     *\n     * _.transform([2, 3, 4], function(result, n) {\n     *   result.push(n *= n);\n     *   return n % 2 == 0;\n     * }, []);\n     * // => [4, 9]\n     *\n     * _.transform({ 'a': 1, 'b': 2, 'c': 1 }, function(result, value, key) {\n     *   (result[value] || (result[value] = [])).push(key);\n     * }, {});\n     * // => { '1': ['a', 'c'], '2': ['b'] }\n     */\n    function transform(object, iteratee, accumulator) {\n      var isArr = isArray(object),\n          isArrLike = isArr || isBuffer(object) || isTypedArray(object);\n\n      iteratee = getIteratee(iteratee, 4);\n      if (accumulator == null) {\n        var Ctor = object && object.constructor;\n        if (isArrLike) {\n          accumulator = isArr ? new Ctor : [];\n        }\n        else if (isObject(object)) {\n          accumulator = isFunction(Ctor) ? baseCreate(getPrototype(object)) : {};\n        }\n        else {\n          accumulator = {};\n        }\n      }\n      (isArrLike ? arrayEach : baseForOwn)(object, function(value, index, object) {\n        return iteratee(accumulator, value, index, object);\n      });\n      return accumulator;\n    }\n\n    /**\n     * Removes the property at `path` of `object`.\n     *\n     * **Note:** This method mutates `object`.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Object\n     * @param {Object} object The object to modify.\n     * @param {Array|string} path The path of the property to unset.\n     * @returns {boolean} Returns `true` if the property is deleted, else `false`.\n     * @example\n     *\n     * var object = { 'a': [{ 'b': { 'c': 7 } }] };\n     * _.unset(object, 'a[0].b.c');\n     * // => true\n     *\n     * console.log(object);\n     * // => { 'a': [{ 'b': {} }] };\n     *\n     * _.unset(object, ['a', '0', 'b', 'c']);\n     * // => true\n     *\n     * console.log(object);\n     * // => { 'a': [{ 'b': {} }] };\n     */\n    function unset(object, path) {\n      return object == null ? true : baseUnset(object, path);\n    }\n\n    /**\n     * This method is like `_.set` except that accepts `updater` to produce the\n     * value to set. Use `_.updateWith` to customize `path` creation. The `updater`\n     * is invoked with one argument: (value).\n     *\n     * **Note:** This method mutates `object`.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.6.0\n     * @category Object\n     * @param {Object} object The object to modify.\n     * @param {Array|string} path The path of the property to set.\n     * @param {Function} updater The function to produce the updated value.\n     * @returns {Object} Returns `object`.\n     * @example\n     *\n     * var object = { 'a': [{ 'b': { 'c': 3 } }] };\n     *\n     * _.update(object, 'a[0].b.c', function(n) { return n * n; });\n     * console.log(object.a[0].b.c);\n     * // => 9\n     *\n     * _.update(object, 'x[0].y.z', function(n) { return n ? n + 1 : 0; });\n     * console.log(object.x[0].y.z);\n     * // => 0\n     */\n    function update(object, path, updater) {\n      return object == null ? object : baseUpdate(object, path, castFunction(updater));\n    }\n\n    /**\n     * This method is like `_.update` except that it accepts `customizer` which is\n     * invoked to produce the objects of `path`.  If `customizer` returns `undefined`\n     * path creation is handled by the method instead. The `customizer` is invoked\n     * with three arguments: (nsValue, key, nsObject).\n     *\n     * **Note:** This method mutates `object`.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.6.0\n     * @category Object\n     * @param {Object} object The object to modify.\n     * @param {Array|string} path The path of the property to set.\n     * @param {Function} updater The function to produce the updated value.\n     * @param {Function} [customizer] The function to customize assigned values.\n     * @returns {Object} Returns `object`.\n     * @example\n     *\n     * var object = {};\n     *\n     * _.updateWith(object, '[0][1]', _.constant('a'), Object);\n     * // => { '0': { '1': 'a' } }\n     */\n    function updateWith(object, path, updater, customizer) {\n      customizer = typeof customizer == 'function' ? customizer : undefined;\n      return object == null ? object : baseUpdate(object, path, castFunction(updater), customizer);\n    }\n\n    /**\n     * Creates an array of the own enumerable string keyed property values of `object`.\n     *\n     * **Note:** Non-object values are coerced to objects.\n     *\n     * @static\n     * @since 0.1.0\n     * @memberOf _\n     * @category Object\n     * @param {Object} object The object to query.\n     * @returns {Array} Returns the array of property values.\n     * @example\n     *\n     * function Foo() {\n     *   this.a = 1;\n     *   this.b = 2;\n     * }\n     *\n     * Foo.prototype.c = 3;\n     *\n     * _.values(new Foo);\n     * // => [1, 2] (iteration order is not guaranteed)\n     *\n     * _.values('hi');\n     * // => ['h', 'i']\n     */\n    function values(object) {\n      return object == null ? [] : baseValues(object, keys(object));\n    }\n\n    /**\n     * Creates an array of the own and inherited enumerable string keyed property\n     * values of `object`.\n     *\n     * **Note:** Non-object values are coerced to objects.\n     *\n     * @static\n     * @memberOf _\n     * @since 3.0.0\n     * @category Object\n     * @param {Object} object The object to query.\n     * @returns {Array} Returns the array of property values.\n     * @example\n     *\n     * function Foo() {\n     *   this.a = 1;\n     *   this.b = 2;\n     * }\n     *\n     * Foo.prototype.c = 3;\n     *\n     * _.valuesIn(new Foo);\n     * // => [1, 2, 3] (iteration order is not guaranteed)\n     */\n    function valuesIn(object) {\n      return object == null ? [] : baseValues(object, keysIn(object));\n    }\n\n    /*------------------------------------------------------------------------*/\n\n    /**\n     * Clamps `number` within the inclusive `lower` and `upper` bounds.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Number\n     * @param {number} number The number to clamp.\n     * @param {number} [lower] The lower bound.\n     * @param {number} upper The upper bound.\n     * @returns {number} Returns the clamped number.\n     * @example\n     *\n     * _.clamp(-10, -5, 5);\n     * // => -5\n     *\n     * _.clamp(10, -5, 5);\n     * // => 5\n     */\n    function clamp(number, lower, upper) {\n      if (upper === undefined) {\n        upper = lower;\n        lower = undefined;\n      }\n      if (upper !== undefined) {\n        upper = toNumber(upper);\n        upper = upper === upper ? upper : 0;\n      }\n      if (lower !== undefined) {\n        lower = toNumber(lower);\n        lower = lower === lower ? lower : 0;\n      }\n      return baseClamp(toNumber(number), lower, upper);\n    }\n\n    /**\n     * Checks if `n` is between `start` and up to, but not including, `end`. If\n     * `end` is not specified, it's set to `start` with `start` then set to `0`.\n     * If `start` is greater than `end` the params are swapped to support\n     * negative ranges.\n     *\n     * @static\n     * @memberOf _\n     * @since 3.3.0\n     * @category Number\n     * @param {number} number The number to check.\n     * @param {number} [start=0] The start of the range.\n     * @param {number} end The end of the range.\n     * @returns {boolean} Returns `true` if `number` is in the range, else `false`.\n     * @see _.range, _.rangeRight\n     * @example\n     *\n     * _.inRange(3, 2, 4);\n     * // => true\n     *\n     * _.inRange(4, 8);\n     * // => true\n     *\n     * _.inRange(4, 2);\n     * // => false\n     *\n     * _.inRange(2, 2);\n     * // => false\n     *\n     * _.inRange(1.2, 2);\n     * // => true\n     *\n     * _.inRange(5.2, 4);\n     * // => false\n     *\n     * _.inRange(-3, -2, -6);\n     * // => true\n     */\n    function inRange(number, start, end) {\n      start = toFinite(start);\n      if (end === undefined) {\n        end = start;\n        start = 0;\n      } else {\n        end = toFinite(end);\n      }\n      number = toNumber(number);\n      return baseInRange(number, start, end);\n    }\n\n    /**\n     * Produces a random number between the inclusive `lower` and `upper` bounds.\n     * If only one argument is provided a number between `0` and the given number\n     * is returned. If `floating` is `true`, or either `lower` or `upper` are\n     * floats, a floating-point number is returned instead of an integer.\n     *\n     * **Note:** JavaScript follows the IEEE-754 standard for resolving\n     * floating-point values which can produce unexpected results.\n     *\n     * @static\n     * @memberOf _\n     * @since 0.7.0\n     * @category Number\n     * @param {number} [lower=0] The lower bound.\n     * @param {number} [upper=1] The upper bound.\n     * @param {boolean} [floating] Specify returning a floating-point number.\n     * @returns {number} Returns the random number.\n     * @example\n     *\n     * _.random(0, 5);\n     * // => an integer between 0 and 5\n     *\n     * _.random(5);\n     * // => also an integer between 0 and 5\n     *\n     * _.random(5, true);\n     * // => a floating-point number between 0 and 5\n     *\n     * _.random(1.2, 5.2);\n     * // => a floating-point number between 1.2 and 5.2\n     */\n    function random(lower, upper, floating) {\n      if (floating && typeof floating != 'boolean' && isIterateeCall(lower, upper, floating)) {\n        upper = floating = undefined;\n      }\n      if (floating === undefined) {\n        if (typeof upper == 'boolean') {\n          floating = upper;\n          upper = undefined;\n        }\n        else if (typeof lower == 'boolean') {\n          floating = lower;\n          lower = undefined;\n        }\n      }\n      if (lower === undefined && upper === undefined) {\n        lower = 0;\n        upper = 1;\n      }\n      else {\n        lower = toFinite(lower);\n        if (upper === undefined) {\n          upper = lower;\n          lower = 0;\n        } else {\n          upper = toFinite(upper);\n        }\n      }\n      if (lower > upper) {\n        var temp = lower;\n        lower = upper;\n        upper = temp;\n      }\n      if (floating || lower % 1 || upper % 1) {\n        var rand = nativeRandom();\n        return nativeMin(lower + (rand * (upper - lower + freeParseFloat('1e-' + ((rand + '').length - 1)))), upper);\n      }\n      return baseRandom(lower, upper);\n    }\n\n    /*------------------------------------------------------------------------*/\n\n    /**\n     * Converts `string` to [camel case](https://en.wikipedia.org/wiki/CamelCase).\n     *\n     * @static\n     * @memberOf _\n     * @since 3.0.0\n     * @category String\n     * @param {string} [string=''] The string to convert.\n     * @returns {string} Returns the camel cased string.\n     * @example\n     *\n     * _.camelCase('Foo Bar');\n     * // => 'fooBar'\n     *\n     * _.camelCase('--foo-bar--');\n     * // => 'fooBar'\n     *\n     * _.camelCase('__FOO_BAR__');\n     * // => 'fooBar'\n     */\n    var camelCase = createCompounder(function(result, word, index) {\n      word = word.toLowerCase();\n      return result + (index ? capitalize(word) : word);\n    });\n\n    /**\n     * Converts the first character of `string` to upper case and the remaining\n     * to lower case.\n     *\n     * @static\n     * @memberOf _\n     * @since 3.0.0\n     * @category String\n     * @param {string} [string=''] The string to capitalize.\n     * @returns {string} Returns the capitalized string.\n     * @example\n     *\n     * _.capitalize('FRED');\n     * // => 'Fred'\n     */\n    function capitalize(string) {\n      return upperFirst(toString(string).toLowerCase());\n    }\n\n    /**\n     * Deburrs `string` by converting\n     * [Latin-1 Supplement](https://en.wikipedia.org/wiki/Latin-1_Supplement_(Unicode_block)#Character_table)\n     * and [Latin Extended-A](https://en.wikipedia.org/wiki/Latin_Extended-A)\n     * letters to basic Latin letters and removing\n     * [combining diacritical marks](https://en.wikipedia.org/wiki/Combining_Diacritical_Marks).\n     *\n     * @static\n     * @memberOf _\n     * @since 3.0.0\n     * @category String\n     * @param {string} [string=''] The string to deburr.\n     * @returns {string} Returns the deburred string.\n     * @example\n     *\n     * _.deburr('déjà vu');\n     * // => 'deja vu'\n     */\n    function deburr(string) {\n      string = toString(string);\n      return string && string.replace(reLatin, deburrLetter).replace(reComboMark, '');\n    }\n\n    /**\n     * Checks if `string` ends with the given target string.\n     *\n     * @static\n     * @memberOf _\n     * @since 3.0.0\n     * @category String\n     * @param {string} [string=''] The string to inspect.\n     * @param {string} [target] The string to search for.\n     * @param {number} [position=string.length] The position to search up to.\n     * @returns {boolean} Returns `true` if `string` ends with `target`,\n     *  else `false`.\n     * @example\n     *\n     * _.endsWith('abc', 'c');\n     * // => true\n     *\n     * _.endsWith('abc', 'b');\n     * // => false\n     *\n     * _.endsWith('abc', 'b', 2);\n     * // => true\n     */\n    function endsWith(string, target, position) {\n      string = toString(string);\n      target = baseToString(target);\n\n      var length = string.length;\n      position = position === undefined\n        ? length\n        : baseClamp(toInteger(position), 0, length);\n\n      var end = position;\n      position -= target.length;\n      return position >= 0 && string.slice(position, end) == target;\n    }\n\n    /**\n     * Converts the characters \"&\", \"<\", \">\", '\"', and \"'\" in `string` to their\n     * corresponding HTML entities.\n     *\n     * **Note:** No other characters are escaped. To escape additional\n     * characters use a third-party library like [_he_](https://mths.be/he).\n     *\n     * Though the \">\" character is escaped for symmetry, characters like\n     * \">\" and \"/\" don't need escaping in HTML and have no special meaning\n     * unless they're part of a tag or unquoted attribute value. See\n     * [Mathias Bynens's article](https://mathiasbynens.be/notes/ambiguous-ampersands)\n     * (under \"semi-related fun fact\") for more details.\n     *\n     * When working with HTML you should always\n     * [quote attribute values](http://wonko.com/post/html-escaping) to reduce\n     * XSS vectors.\n     *\n     * @static\n     * @since 0.1.0\n     * @memberOf _\n     * @category String\n     * @param {string} [string=''] The string to escape.\n     * @returns {string} Returns the escaped string.\n     * @example\n     *\n     * _.escape('fred, barney, & pebbles');\n     * // => 'fred, barney, &amp; pebbles'\n     */\n    function escape(string) {\n      string = toString(string);\n      return (string && reHasUnescapedHtml.test(string))\n        ? string.replace(reUnescapedHtml, escapeHtmlChar)\n        : string;\n    }\n\n    /**\n     * Escapes the `RegExp` special characters \"^\", \"$\", \"\\\", \".\", \"*\", \"+\",\n     * \"?\", \"(\", \")\", \"[\", \"]\", \"{\", \"}\", and \"|\" in `string`.\n     *\n     * @static\n     * @memberOf _\n     * @since 3.0.0\n     * @category String\n     * @param {string} [string=''] The string to escape.\n     * @returns {string} Returns the escaped string.\n     * @example\n     *\n     * _.escapeRegExp('[lodash](https://lodash.com/)');\n     * // => '\\[lodash\\]\\(https://lodash\\.com/\\)'\n     */\n    function escapeRegExp(string) {\n      string = toString(string);\n      return (string && reHasRegExpChar.test(string))\n        ? string.replace(reRegExpChar, '\\\\$&')\n        : string;\n    }\n\n    /**\n     * Converts `string` to\n     * [kebab case](https://en.wikipedia.org/wiki/Letter_case#Special_case_styles).\n     *\n     * @static\n     * @memberOf _\n     * @since 3.0.0\n     * @category String\n     * @param {string} [string=''] The string to convert.\n     * @returns {string} Returns the kebab cased string.\n     * @example\n     *\n     * _.kebabCase('Foo Bar');\n     * // => 'foo-bar'\n     *\n     * _.kebabCase('fooBar');\n     * // => 'foo-bar'\n     *\n     * _.kebabCase('__FOO_BAR__');\n     * // => 'foo-bar'\n     */\n    var kebabCase = createCompounder(function(result, word, index) {\n      return result + (index ? '-' : '') + word.toLowerCase();\n    });\n\n    /**\n     * Converts `string`, as space separated words, to lower case.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category String\n     * @param {string} [string=''] The string to convert.\n     * @returns {string} Returns the lower cased string.\n     * @example\n     *\n     * _.lowerCase('--Foo-Bar--');\n     * // => 'foo bar'\n     *\n     * _.lowerCase('fooBar');\n     * // => 'foo bar'\n     *\n     * _.lowerCase('__FOO_BAR__');\n     * // => 'foo bar'\n     */\n    var lowerCase = createCompounder(function(result, word, index) {\n      return result + (index ? ' ' : '') + word.toLowerCase();\n    });\n\n    /**\n     * Converts the first character of `string` to lower case.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category String\n     * @param {string} [string=''] The string to convert.\n     * @returns {string} Returns the converted string.\n     * @example\n     *\n     * _.lowerFirst('Fred');\n     * // => 'fred'\n     *\n     * _.lowerFirst('FRED');\n     * // => 'fRED'\n     */\n    var lowerFirst = createCaseFirst('toLowerCase');\n\n    /**\n     * Pads `string` on the left and right sides if it's shorter than `length`.\n     * Padding characters are truncated if they can't be evenly divided by `length`.\n     *\n     * @static\n     * @memberOf _\n     * @since 3.0.0\n     * @category String\n     * @param {string} [string=''] The string to pad.\n     * @param {number} [length=0] The padding length.\n     * @param {string} [chars=' '] The string used as padding.\n     * @returns {string} Returns the padded string.\n     * @example\n     *\n     * _.pad('abc', 8);\n     * // => '  abc   '\n     *\n     * _.pad('abc', 8, '_-');\n     * // => '_-abc_-_'\n     *\n     * _.pad('abc', 3);\n     * // => 'abc'\n     */\n    function pad(string, length, chars) {\n      string = toString(string);\n      length = toInteger(length);\n\n      var strLength = length ? stringSize(string) : 0;\n      if (!length || strLength >= length) {\n        return string;\n      }\n      var mid = (length - strLength) / 2;\n      return (\n        createPadding(nativeFloor(mid), chars) +\n        string +\n        createPadding(nativeCeil(mid), chars)\n      );\n    }\n\n    /**\n     * Pads `string` on the right side if it's shorter than `length`. Padding\n     * characters are truncated if they exceed `length`.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category String\n     * @param {string} [string=''] The string to pad.\n     * @param {number} [length=0] The padding length.\n     * @param {string} [chars=' '] The string used as padding.\n     * @returns {string} Returns the padded string.\n     * @example\n     *\n     * _.padEnd('abc', 6);\n     * // => 'abc   '\n     *\n     * _.padEnd('abc', 6, '_-');\n     * // => 'abc_-_'\n     *\n     * _.padEnd('abc', 3);\n     * // => 'abc'\n     */\n    function padEnd(string, length, chars) {\n      string = toString(string);\n      length = toInteger(length);\n\n      var strLength = length ? stringSize(string) : 0;\n      return (length && strLength < length)\n        ? (string + createPadding(length - strLength, chars))\n        : string;\n    }\n\n    /**\n     * Pads `string` on the left side if it's shorter than `length`. Padding\n     * characters are truncated if they exceed `length`.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category String\n     * @param {string} [string=''] The string to pad.\n     * @param {number} [length=0] The padding length.\n     * @param {string} [chars=' '] The string used as padding.\n     * @returns {string} Returns the padded string.\n     * @example\n     *\n     * _.padStart('abc', 6);\n     * // => '   abc'\n     *\n     * _.padStart('abc', 6, '_-');\n     * // => '_-_abc'\n     *\n     * _.padStart('abc', 3);\n     * // => 'abc'\n     */\n    function padStart(string, length, chars) {\n      string = toString(string);\n      length = toInteger(length);\n\n      var strLength = length ? stringSize(string) : 0;\n      return (length && strLength < length)\n        ? (createPadding(length - strLength, chars) + string)\n        : string;\n    }\n\n    /**\n     * Converts `string` to an integer of the specified radix. If `radix` is\n     * `undefined` or `0`, a `radix` of `10` is used unless `value` is a\n     * hexadecimal, in which case a `radix` of `16` is used.\n     *\n     * **Note:** This method aligns with the\n     * [ES5 implementation](https://es5.github.io/#x15.1.2.2) of `parseInt`.\n     *\n     * @static\n     * @memberOf _\n     * @since 1.1.0\n     * @category String\n     * @param {string} string The string to convert.\n     * @param {number} [radix=10] The radix to interpret `value` by.\n     * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.\n     * @returns {number} Returns the converted integer.\n     * @example\n     *\n     * _.parseInt('08');\n     * // => 8\n     *\n     * _.map(['6', '08', '10'], _.parseInt);\n     * // => [6, 8, 10]\n     */\n    function parseInt(string, radix, guard) {\n      if (guard || radix == null) {\n        radix = 0;\n      } else if (radix) {\n        radix = +radix;\n      }\n      return nativeParseInt(toString(string).replace(reTrimStart, ''), radix || 0);\n    }\n\n    /**\n     * Repeats the given string `n` times.\n     *\n     * @static\n     * @memberOf _\n     * @since 3.0.0\n     * @category String\n     * @param {string} [string=''] The string to repeat.\n     * @param {number} [n=1] The number of times to repeat the string.\n     * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.\n     * @returns {string} Returns the repeated string.\n     * @example\n     *\n     * _.repeat('*', 3);\n     * // => '***'\n     *\n     * _.repeat('abc', 2);\n     * // => 'abcabc'\n     *\n     * _.repeat('abc', 0);\n     * // => ''\n     */\n    function repeat(string, n, guard) {\n      if ((guard ? isIterateeCall(string, n, guard) : n === undefined)) {\n        n = 1;\n      } else {\n        n = toInteger(n);\n      }\n      return baseRepeat(toString(string), n);\n    }\n\n    /**\n     * Replaces matches for `pattern` in `string` with `replacement`.\n     *\n     * **Note:** This method is based on\n     * [`String#replace`](https://mdn.io/String/replace).\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category String\n     * @param {string} [string=''] The string to modify.\n     * @param {RegExp|string} pattern The pattern to replace.\n     * @param {Function|string} replacement The match replacement.\n     * @returns {string} Returns the modified string.\n     * @example\n     *\n     * _.replace('Hi Fred', 'Fred', 'Barney');\n     * // => 'Hi Barney'\n     */\n    function replace() {\n      var args = arguments,\n          string = toString(args[0]);\n\n      return args.length < 3 ? string : string.replace(args[1], args[2]);\n    }\n\n    /**\n     * Converts `string` to\n     * [snake case](https://en.wikipedia.org/wiki/Snake_case).\n     *\n     * @static\n     * @memberOf _\n     * @since 3.0.0\n     * @category String\n     * @param {string} [string=''] The string to convert.\n     * @returns {string} Returns the snake cased string.\n     * @example\n     *\n     * _.snakeCase('Foo Bar');\n     * // => 'foo_bar'\n     *\n     * _.snakeCase('fooBar');\n     * // => 'foo_bar'\n     *\n     * _.snakeCase('--FOO-BAR--');\n     * // => 'foo_bar'\n     */\n    var snakeCase = createCompounder(function(result, word, index) {\n      return result + (index ? '_' : '') + word.toLowerCase();\n    });\n\n    /**\n     * Splits `string` by `separator`.\n     *\n     * **Note:** This method is based on\n     * [`String#split`](https://mdn.io/String/split).\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category String\n     * @param {string} [string=''] The string to split.\n     * @param {RegExp|string} separator The separator pattern to split by.\n     * @param {number} [limit] The length to truncate results to.\n     * @returns {Array} Returns the string segments.\n     * @example\n     *\n     * _.split('a-b-c', '-', 2);\n     * // => ['a', 'b']\n     */\n    function split(string, separator, limit) {\n      if (limit && typeof limit != 'number' && isIterateeCall(string, separator, limit)) {\n        separator = limit = undefined;\n      }\n      limit = limit === undefined ? MAX_ARRAY_LENGTH : limit >>> 0;\n      if (!limit) {\n        return [];\n      }\n      string = toString(string);\n      if (string && (\n            typeof separator == 'string' ||\n            (separator != null && !isRegExp(separator))\n          )) {\n        separator = baseToString(separator);\n        if (!separator && hasUnicode(string)) {\n          return castSlice(stringToArray(string), 0, limit);\n        }\n      }\n      return string.split(separator, limit);\n    }\n\n    /**\n     * Converts `string` to\n     * [start case](https://en.wikipedia.org/wiki/Letter_case#Stylistic_or_specialised_usage).\n     *\n     * @static\n     * @memberOf _\n     * @since 3.1.0\n     * @category String\n     * @param {string} [string=''] The string to convert.\n     * @returns {string} Returns the start cased string.\n     * @example\n     *\n     * _.startCase('--foo-bar--');\n     * // => 'Foo Bar'\n     *\n     * _.startCase('fooBar');\n     * // => 'Foo Bar'\n     *\n     * _.startCase('__FOO_BAR__');\n     * // => 'FOO BAR'\n     */\n    var startCase = createCompounder(function(result, word, index) {\n      return result + (index ? ' ' : '') + upperFirst(word);\n    });\n\n    /**\n     * Checks if `string` starts with the given target string.\n     *\n     * @static\n     * @memberOf _\n     * @since 3.0.0\n     * @category String\n     * @param {string} [string=''] The string to inspect.\n     * @param {string} [target] The string to search for.\n     * @param {number} [position=0] The position to search from.\n     * @returns {boolean} Returns `true` if `string` starts with `target`,\n     *  else `false`.\n     * @example\n     *\n     * _.startsWith('abc', 'a');\n     * // => true\n     *\n     * _.startsWith('abc', 'b');\n     * // => false\n     *\n     * _.startsWith('abc', 'b', 1);\n     * // => true\n     */\n    function startsWith(string, target, position) {\n      string = toString(string);\n      position = position == null\n        ? 0\n        : baseClamp(toInteger(position), 0, string.length);\n\n      target = baseToString(target);\n      return string.slice(position, position + target.length) == target;\n    }\n\n    /**\n     * Creates a compiled template function that can interpolate data properties\n     * in \"interpolate\" delimiters, HTML-escape interpolated data properties in\n     * \"escape\" delimiters, and execute JavaScript in \"evaluate\" delimiters. Data\n     * properties may be accessed as free variables in the template. If a setting\n     * object is given, it takes precedence over `_.templateSettings` values.\n     *\n     * **Note:** In the development build `_.template` utilizes\n     * [sourceURLs](http://www.html5rocks.com/en/tutorials/developertools/sourcemaps/#toc-sourceurl)\n     * for easier debugging.\n     *\n     * For more information on precompiling templates see\n     * [lodash's custom builds documentation](https://lodash.com/custom-builds).\n     *\n     * For more information on Chrome extension sandboxes see\n     * [Chrome's extensions documentation](https://developer.chrome.com/extensions/sandboxingEval).\n     *\n     * @static\n     * @since 0.1.0\n     * @memberOf _\n     * @category String\n     * @param {string} [string=''] The template string.\n     * @param {Object} [options={}] The options object.\n     * @param {RegExp} [options.escape=_.templateSettings.escape]\n     *  The HTML \"escape\" delimiter.\n     * @param {RegExp} [options.evaluate=_.templateSettings.evaluate]\n     *  The \"evaluate\" delimiter.\n     * @param {Object} [options.imports=_.templateSettings.imports]\n     *  An object to import into the template as free variables.\n     * @param {RegExp} [options.interpolate=_.templateSettings.interpolate]\n     *  The \"interpolate\" delimiter.\n     * @param {string} [options.sourceURL='lodash.templateSources[n]']\n     *  The sourceURL of the compiled template.\n     * @param {string} [options.variable='obj']\n     *  The data object variable name.\n     * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.\n     * @returns {Function} Returns the compiled template function.\n     * @example\n     *\n     * // Use the \"interpolate\" delimiter to create a compiled template.\n     * var compiled = _.template('hello <%= user %>!');\n     * compiled({ 'user': 'fred' });\n     * // => 'hello fred!'\n     *\n     * // Use the HTML \"escape\" delimiter to escape data property values.\n     * var compiled = _.template('<b><%- value %></b>');\n     * compiled({ 'value': '<script>' });\n     * // => '<b>&lt;script&gt;</b>'\n     *\n     * // Use the \"evaluate\" delimiter to execute JavaScript and generate HTML.\n     * var compiled = _.template('<% _.forEach(users, function(user) { %><li><%- user %></li><% }); %>');\n     * compiled({ 'users': ['fred', 'barney'] });\n     * // => '<li>fred</li><li>barney</li>'\n     *\n     * // Use the internal `print` function in \"evaluate\" delimiters.\n     * var compiled = _.template('<% print(\"hello \" + user); %>!');\n     * compiled({ 'user': 'barney' });\n     * // => 'hello barney!'\n     *\n     * // Use the ES template literal delimiter as an \"interpolate\" delimiter.\n     * // Disable support by replacing the \"interpolate\" delimiter.\n     * var compiled = _.template('hello ${ user }!');\n     * compiled({ 'user': 'pebbles' });\n     * // => 'hello pebbles!'\n     *\n     * // Use backslashes to treat delimiters as plain text.\n     * var compiled = _.template('<%= \"\\\\<%- value %\\\\>\" %>');\n     * compiled({ 'value': 'ignored' });\n     * // => '<%- value %>'\n     *\n     * // Use the `imports` option to import `jQuery` as `jq`.\n     * var text = '<% jq.each(users, function(user) { %><li><%- user %></li><% }); %>';\n     * var compiled = _.template(text, { 'imports': { 'jq': jQuery } });\n     * compiled({ 'users': ['fred', 'barney'] });\n     * // => '<li>fred</li><li>barney</li>'\n     *\n     * // Use the `sourceURL` option to specify a custom sourceURL for the template.\n     * var compiled = _.template('hello <%= user %>!', { 'sourceURL': '/basic/greeting.jst' });\n     * compiled(data);\n     * // => Find the source of \"greeting.jst\" under the Sources tab or Resources panel of the web inspector.\n     *\n     * // Use the `variable` option to ensure a with-statement isn't used in the compiled template.\n     * var compiled = _.template('hi <%= data.user %>!', { 'variable': 'data' });\n     * compiled.source;\n     * // => function(data) {\n     * //   var __t, __p = '';\n     * //   __p += 'hi ' + ((__t = ( data.user )) == null ? '' : __t) + '!';\n     * //   return __p;\n     * // }\n     *\n     * // Use custom template delimiters.\n     * _.templateSettings.interpolate = /{{([\\s\\S]+?)}}/g;\n     * var compiled = _.template('hello {{ user }}!');\n     * compiled({ 'user': 'mustache' });\n     * // => 'hello mustache!'\n     *\n     * // Use the `source` property to inline compiled templates for meaningful\n     * // line numbers in error messages and stack traces.\n     * fs.writeFileSync(path.join(process.cwd(), 'jst.js'), '\\\n     *   var JST = {\\\n     *     \"main\": ' + _.template(mainText).source + '\\\n     *   };\\\n     * ');\n     */\n    function template(string, options, guard) {\n      // Based on John Resig's `tmpl` implementation\n      // (http://ejohn.org/blog/javascript-micro-templating/)\n      // and Laura Doktorova's doT.js (https://github.com/olado/doT).\n      var settings = lodash.templateSettings;\n\n      if (guard && isIterateeCall(string, options, guard)) {\n        options = undefined;\n      }\n      string = toString(string);\n      options = assignInWith({}, options, settings, customDefaultsAssignIn);\n\n      var imports = assignInWith({}, options.imports, settings.imports, customDefaultsAssignIn),\n          importsKeys = keys(imports),\n          importsValues = baseValues(imports, importsKeys);\n\n      var isEscaping,\n          isEvaluating,\n          index = 0,\n          interpolate = options.interpolate || reNoMatch,\n          source = \"__p += '\";\n\n      // Compile the regexp to match each delimiter.\n      var reDelimiters = RegExp(\n        (options.escape || reNoMatch).source + '|' +\n        interpolate.source + '|' +\n        (interpolate === reInterpolate ? reEsTemplate : reNoMatch).source + '|' +\n        (options.evaluate || reNoMatch).source + '|$'\n      , 'g');\n\n      // Use a sourceURL for easier debugging.\n      // The sourceURL gets injected into the source that's eval-ed, so be careful\n      // to normalize all kinds of whitespace, so e.g. newlines (and unicode versions of it) can't sneak in\n      // and escape the comment, thus injecting code that gets evaled.\n      var sourceURL = '//# sourceURL=' +\n        (hasOwnProperty.call(options, 'sourceURL')\n          ? (options.sourceURL + '').replace(/\\s/g, ' ')\n          : ('lodash.templateSources[' + (++templateCounter) + ']')\n        ) + '\\n';\n\n      string.replace(reDelimiters, function(match, escapeValue, interpolateValue, esTemplateValue, evaluateValue, offset) {\n        interpolateValue || (interpolateValue = esTemplateValue);\n\n        // Escape characters that can't be included in string literals.\n        source += string.slice(index, offset).replace(reUnescapedString, escapeStringChar);\n\n        // Replace delimiters with snippets.\n        if (escapeValue) {\n          isEscaping = true;\n          source += \"' +\\n__e(\" + escapeValue + \") +\\n'\";\n        }\n        if (evaluateValue) {\n          isEvaluating = true;\n          source += \"';\\n\" + evaluateValue + \";\\n__p += '\";\n        }\n        if (interpolateValue) {\n          source += \"' +\\n((__t = (\" + interpolateValue + \")) == null ? '' : __t) +\\n'\";\n        }\n        index = offset + match.length;\n\n        // The JS engine embedded in Adobe products needs `match` returned in\n        // order to produce the correct `offset` value.\n        return match;\n      });\n\n      source += \"';\\n\";\n\n      // If `variable` is not specified wrap a with-statement around the generated\n      // code to add the data object to the top of the scope chain.\n      var variable = hasOwnProperty.call(options, 'variable') && options.variable;\n      if (!variable) {\n        source = 'with (obj) {\\n' + source + '\\n}\\n';\n      }\n      // Throw an error if a forbidden character was found in `variable`, to prevent\n      // potential command injection attacks.\n      else if (reForbiddenIdentifierChars.test(variable)) {\n        throw new Error(INVALID_TEMPL_VAR_ERROR_TEXT);\n      }\n\n      // Cleanup code by stripping empty strings.\n      source = (isEvaluating ? source.replace(reEmptyStringLeading, '') : source)\n        .replace(reEmptyStringMiddle, '$1')\n        .replace(reEmptyStringTrailing, '$1;');\n\n      // Frame code as the function body.\n      source = 'function(' + (variable || 'obj') + ') {\\n' +\n        (variable\n          ? ''\n          : 'obj || (obj = {});\\n'\n        ) +\n        \"var __t, __p = ''\" +\n        (isEscaping\n           ? ', __e = _.escape'\n           : ''\n        ) +\n        (isEvaluating\n          ? ', __j = Array.prototype.join;\\n' +\n            \"function print() { __p += __j.call(arguments, '') }\\n\"\n          : ';\\n'\n        ) +\n        source +\n        'return __p\\n}';\n\n      var result = attempt(function() {\n        return Function(importsKeys, sourceURL + 'return ' + source)\n          .apply(undefined, importsValues);\n      });\n\n      // Provide the compiled function's source by its `toString` method or\n      // the `source` property as a convenience for inlining compiled templates.\n      result.source = source;\n      if (isError(result)) {\n        throw result;\n      }\n      return result;\n    }\n\n    /**\n     * Converts `string`, as a whole, to lower case just like\n     * [String#toLowerCase](https://mdn.io/toLowerCase).\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category String\n     * @param {string} [string=''] The string to convert.\n     * @returns {string} Returns the lower cased string.\n     * @example\n     *\n     * _.toLower('--Foo-Bar--');\n     * // => '--foo-bar--'\n     *\n     * _.toLower('fooBar');\n     * // => 'foobar'\n     *\n     * _.toLower('__FOO_BAR__');\n     * // => '__foo_bar__'\n     */\n    function toLower(value) {\n      return toString(value).toLowerCase();\n    }\n\n    /**\n     * Converts `string`, as a whole, to upper case just like\n     * [String#toUpperCase](https://mdn.io/toUpperCase).\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category String\n     * @param {string} [string=''] The string to convert.\n     * @returns {string} Returns the upper cased string.\n     * @example\n     *\n     * _.toUpper('--foo-bar--');\n     * // => '--FOO-BAR--'\n     *\n     * _.toUpper('fooBar');\n     * // => 'FOOBAR'\n     *\n     * _.toUpper('__foo_bar__');\n     * // => '__FOO_BAR__'\n     */\n    function toUpper(value) {\n      return toString(value).toUpperCase();\n    }\n\n    /**\n     * Removes leading and trailing whitespace or specified characters from `string`.\n     *\n     * @static\n     * @memberOf _\n     * @since 3.0.0\n     * @category String\n     * @param {string} [string=''] The string to trim.\n     * @param {string} [chars=whitespace] The characters to trim.\n     * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.\n     * @returns {string} Returns the trimmed string.\n     * @example\n     *\n     * _.trim('  abc  ');\n     * // => 'abc'\n     *\n     * _.trim('-_-abc-_-', '_-');\n     * // => 'abc'\n     *\n     * _.map(['  foo  ', '  bar  '], _.trim);\n     * // => ['foo', 'bar']\n     */\n    function trim(string, chars, guard) {\n      string = toString(string);\n      if (string && (guard || chars === undefined)) {\n        return baseTrim(string);\n      }\n      if (!string || !(chars = baseToString(chars))) {\n        return string;\n      }\n      var strSymbols = stringToArray(string),\n          chrSymbols = stringToArray(chars),\n          start = charsStartIndex(strSymbols, chrSymbols),\n          end = charsEndIndex(strSymbols, chrSymbols) + 1;\n\n      return castSlice(strSymbols, start, end).join('');\n    }\n\n    /**\n     * Removes trailing whitespace or specified characters from `string`.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category String\n     * @param {string} [string=''] The string to trim.\n     * @param {string} [chars=whitespace] The characters to trim.\n     * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.\n     * @returns {string} Returns the trimmed string.\n     * @example\n     *\n     * _.trimEnd('  abc  ');\n     * // => '  abc'\n     *\n     * _.trimEnd('-_-abc-_-', '_-');\n     * // => '-_-abc'\n     */\n    function trimEnd(string, chars, guard) {\n      string = toString(string);\n      if (string && (guard || chars === undefined)) {\n        return string.slice(0, trimmedEndIndex(string) + 1);\n      }\n      if (!string || !(chars = baseToString(chars))) {\n        return string;\n      }\n      var strSymbols = stringToArray(string),\n          end = charsEndIndex(strSymbols, stringToArray(chars)) + 1;\n\n      return castSlice(strSymbols, 0, end).join('');\n    }\n\n    /**\n     * Removes leading whitespace or specified characters from `string`.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category String\n     * @param {string} [string=''] The string to trim.\n     * @param {string} [chars=whitespace] The characters to trim.\n     * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.\n     * @returns {string} Returns the trimmed string.\n     * @example\n     *\n     * _.trimStart('  abc  ');\n     * // => 'abc  '\n     *\n     * _.trimStart('-_-abc-_-', '_-');\n     * // => 'abc-_-'\n     */\n    function trimStart(string, chars, guard) {\n      string = toString(string);\n      if (string && (guard || chars === undefined)) {\n        return string.replace(reTrimStart, '');\n      }\n      if (!string || !(chars = baseToString(chars))) {\n        return string;\n      }\n      var strSymbols = stringToArray(string),\n          start = charsStartIndex(strSymbols, stringToArray(chars));\n\n      return castSlice(strSymbols, start).join('');\n    }\n\n    /**\n     * Truncates `string` if it's longer than the given maximum string length.\n     * The last characters of the truncated string are replaced with the omission\n     * string which defaults to \"...\".\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category String\n     * @param {string} [string=''] The string to truncate.\n     * @param {Object} [options={}] The options object.\n     * @param {number} [options.length=30] The maximum string length.\n     * @param {string} [options.omission='...'] The string to indicate text is omitted.\n     * @param {RegExp|string} [options.separator] The separator pattern to truncate to.\n     * @returns {string} Returns the truncated string.\n     * @example\n     *\n     * _.truncate('hi-diddly-ho there, neighborino');\n     * // => 'hi-diddly-ho there, neighbo...'\n     *\n     * _.truncate('hi-diddly-ho there, neighborino', {\n     *   'length': 24,\n     *   'separator': ' '\n     * });\n     * // => 'hi-diddly-ho there,...'\n     *\n     * _.truncate('hi-diddly-ho there, neighborino', {\n     *   'length': 24,\n     *   'separator': /,? +/\n     * });\n     * // => 'hi-diddly-ho there...'\n     *\n     * _.truncate('hi-diddly-ho there, neighborino', {\n     *   'omission': ' [...]'\n     * });\n     * // => 'hi-diddly-ho there, neig [...]'\n     */\n    function truncate(string, options) {\n      var length = DEFAULT_TRUNC_LENGTH,\n          omission = DEFAULT_TRUNC_OMISSION;\n\n      if (isObject(options)) {\n        var separator = 'separator' in options ? options.separator : separator;\n        length = 'length' in options ? toInteger(options.length) : length;\n        omission = 'omission' in options ? baseToString(options.omission) : omission;\n      }\n      string = toString(string);\n\n      var strLength = string.length;\n      if (hasUnicode(string)) {\n        var strSymbols = stringToArray(string);\n        strLength = strSymbols.length;\n      }\n      if (length >= strLength) {\n        return string;\n      }\n      var end = length - stringSize(omission);\n      if (end < 1) {\n        return omission;\n      }\n      var result = strSymbols\n        ? castSlice(strSymbols, 0, end).join('')\n        : string.slice(0, end);\n\n      if (separator === undefined) {\n        return result + omission;\n      }\n      if (strSymbols) {\n        end += (result.length - end);\n      }\n      if (isRegExp(separator)) {\n        if (string.slice(end).search(separator)) {\n          var match,\n              substring = result;\n\n          if (!separator.global) {\n            separator = RegExp(separator.source, toString(reFlags.exec(separator)) + 'g');\n          }\n          separator.lastIndex = 0;\n          while ((match = separator.exec(substring))) {\n            var newEnd = match.index;\n          }\n          result = result.slice(0, newEnd === undefined ? end : newEnd);\n        }\n      } else if (string.indexOf(baseToString(separator), end) != end) {\n        var index = result.lastIndexOf(separator);\n        if (index > -1) {\n          result = result.slice(0, index);\n        }\n      }\n      return result + omission;\n    }\n\n    /**\n     * The inverse of `_.escape`; this method converts the HTML entities\n     * `&amp;`, `&lt;`, `&gt;`, `&quot;`, and `&#39;` in `string` to\n     * their corresponding characters.\n     *\n     * **Note:** No other HTML entities are unescaped. To unescape additional\n     * HTML entities use a third-party library like [_he_](https://mths.be/he).\n     *\n     * @static\n     * @memberOf _\n     * @since 0.6.0\n     * @category String\n     * @param {string} [string=''] The string to unescape.\n     * @returns {string} Returns the unescaped string.\n     * @example\n     *\n     * _.unescape('fred, barney, &amp; pebbles');\n     * // => 'fred, barney, & pebbles'\n     */\n    function unescape(string) {\n      string = toString(string);\n      return (string && reHasEscapedHtml.test(string))\n        ? string.replace(reEscapedHtml, unescapeHtmlChar)\n        : string;\n    }\n\n    /**\n     * Converts `string`, as space separated words, to upper case.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category String\n     * @param {string} [string=''] The string to convert.\n     * @returns {string} Returns the upper cased string.\n     * @example\n     *\n     * _.upperCase('--foo-bar');\n     * // => 'FOO BAR'\n     *\n     * _.upperCase('fooBar');\n     * // => 'FOO BAR'\n     *\n     * _.upperCase('__foo_bar__');\n     * // => 'FOO BAR'\n     */\n    var upperCase = createCompounder(function(result, word, index) {\n      return result + (index ? ' ' : '') + word.toUpperCase();\n    });\n\n    /**\n     * Converts the first character of `string` to upper case.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category String\n     * @param {string} [string=''] The string to convert.\n     * @returns {string} Returns the converted string.\n     * @example\n     *\n     * _.upperFirst('fred');\n     * // => 'Fred'\n     *\n     * _.upperFirst('FRED');\n     * // => 'FRED'\n     */\n    var upperFirst = createCaseFirst('toUpperCase');\n\n    /**\n     * Splits `string` into an array of its words.\n     *\n     * @static\n     * @memberOf _\n     * @since 3.0.0\n     * @category String\n     * @param {string} [string=''] The string to inspect.\n     * @param {RegExp|string} [pattern] The pattern to match words.\n     * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.\n     * @returns {Array} Returns the words of `string`.\n     * @example\n     *\n     * _.words('fred, barney, & pebbles');\n     * // => ['fred', 'barney', 'pebbles']\n     *\n     * _.words('fred, barney, & pebbles', /[^, ]+/g);\n     * // => ['fred', 'barney', '&', 'pebbles']\n     */\n    function words(string, pattern, guard) {\n      string = toString(string);\n      pattern = guard ? undefined : pattern;\n\n      if (pattern === undefined) {\n        return hasUnicodeWord(string) ? unicodeWords(string) : asciiWords(string);\n      }\n      return string.match(pattern) || [];\n    }\n\n    /*------------------------------------------------------------------------*/\n\n    /**\n     * Attempts to invoke `func`, returning either the result or the caught error\n     * object. Any additional arguments are provided to `func` when it's invoked.\n     *\n     * @static\n     * @memberOf _\n     * @since 3.0.0\n     * @category Util\n     * @param {Function} func The function to attempt.\n     * @param {...*} [args] The arguments to invoke `func` with.\n     * @returns {*} Returns the `func` result or error object.\n     * @example\n     *\n     * // Avoid throwing errors for invalid selectors.\n     * var elements = _.attempt(function(selector) {\n     *   return document.querySelectorAll(selector);\n     * }, '>_>');\n     *\n     * if (_.isError(elements)) {\n     *   elements = [];\n     * }\n     */\n    var attempt = baseRest(function(func, args) {\n      try {\n        return apply(func, undefined, args);\n      } catch (e) {\n        return isError(e) ? e : new Error(e);\n      }\n    });\n\n    /**\n     * Binds methods of an object to the object itself, overwriting the existing\n     * method.\n     *\n     * **Note:** This method doesn't set the \"length\" property of bound functions.\n     *\n     * @static\n     * @since 0.1.0\n     * @memberOf _\n     * @category Util\n     * @param {Object} object The object to bind and assign the bound methods to.\n     * @param {...(string|string[])} methodNames The object method names to bind.\n     * @returns {Object} Returns `object`.\n     * @example\n     *\n     * var view = {\n     *   'label': 'docs',\n     *   'click': function() {\n     *     console.log('clicked ' + this.label);\n     *   }\n     * };\n     *\n     * _.bindAll(view, ['click']);\n     * jQuery(element).on('click', view.click);\n     * // => Logs 'clicked docs' when clicked.\n     */\n    var bindAll = flatRest(function(object, methodNames) {\n      arrayEach(methodNames, function(key) {\n        key = toKey(key);\n        baseAssignValue(object, key, bind(object[key], object));\n      });\n      return object;\n    });\n\n    /**\n     * Creates a function that iterates over `pairs` and invokes the corresponding\n     * function of the first predicate to return truthy. The predicate-function\n     * pairs are invoked with the `this` binding and arguments of the created\n     * function.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Util\n     * @param {Array} pairs The predicate-function pairs.\n     * @returns {Function} Returns the new composite function.\n     * @example\n     *\n     * var func = _.cond([\n     *   [_.matches({ 'a': 1 }),           _.constant('matches A')],\n     *   [_.conforms({ 'b': _.isNumber }), _.constant('matches B')],\n     *   [_.stubTrue,                      _.constant('no match')]\n     * ]);\n     *\n     * func({ 'a': 1, 'b': 2 });\n     * // => 'matches A'\n     *\n     * func({ 'a': 0, 'b': 1 });\n     * // => 'matches B'\n     *\n     * func({ 'a': '1', 'b': '2' });\n     * // => 'no match'\n     */\n    function cond(pairs) {\n      var length = pairs == null ? 0 : pairs.length,\n          toIteratee = getIteratee();\n\n      pairs = !length ? [] : arrayMap(pairs, function(pair) {\n        if (typeof pair[1] != 'function') {\n          throw new TypeError(FUNC_ERROR_TEXT);\n        }\n        return [toIteratee(pair[0]), pair[1]];\n      });\n\n      return baseRest(function(args) {\n        var index = -1;\n        while (++index < length) {\n          var pair = pairs[index];\n          if (apply(pair[0], this, args)) {\n            return apply(pair[1], this, args);\n          }\n        }\n      });\n    }\n\n    /**\n     * Creates a function that invokes the predicate properties of `source` with\n     * the corresponding property values of a given object, returning `true` if\n     * all predicates return truthy, else `false`.\n     *\n     * **Note:** The created function is equivalent to `_.conformsTo` with\n     * `source` partially applied.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Util\n     * @param {Object} source The object of property predicates to conform to.\n     * @returns {Function} Returns the new spec function.\n     * @example\n     *\n     * var objects = [\n     *   { 'a': 2, 'b': 1 },\n     *   { 'a': 1, 'b': 2 }\n     * ];\n     *\n     * _.filter(objects, _.conforms({ 'b': function(n) { return n > 1; } }));\n     * // => [{ 'a': 1, 'b': 2 }]\n     */\n    function conforms(source) {\n      return baseConforms(baseClone(source, CLONE_DEEP_FLAG));\n    }\n\n    /**\n     * Creates a function that returns `value`.\n     *\n     * @static\n     * @memberOf _\n     * @since 2.4.0\n     * @category Util\n     * @param {*} value The value to return from the new function.\n     * @returns {Function} Returns the new constant function.\n     * @example\n     *\n     * var objects = _.times(2, _.constant({ 'a': 1 }));\n     *\n     * console.log(objects);\n     * // => [{ 'a': 1 }, { 'a': 1 }]\n     *\n     * console.log(objects[0] === objects[1]);\n     * // => true\n     */\n    function constant(value) {\n      return function() {\n        return value;\n      };\n    }\n\n    /**\n     * Checks `value` to determine whether a default value should be returned in\n     * its place. The `defaultValue` is returned if `value` is `NaN`, `null`,\n     * or `undefined`.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.14.0\n     * @category Util\n     * @param {*} value The value to check.\n     * @param {*} defaultValue The default value.\n     * @returns {*} Returns the resolved value.\n     * @example\n     *\n     * _.defaultTo(1, 10);\n     * // => 1\n     *\n     * _.defaultTo(undefined, 10);\n     * // => 10\n     */\n    function defaultTo(value, defaultValue) {\n      return (value == null || value !== value) ? defaultValue : value;\n    }\n\n    /**\n     * Creates a function that returns the result of invoking the given functions\n     * with the `this` binding of the created function, where each successive\n     * invocation is supplied the return value of the previous.\n     *\n     * @static\n     * @memberOf _\n     * @since 3.0.0\n     * @category Util\n     * @param {...(Function|Function[])} [funcs] The functions to invoke.\n     * @returns {Function} Returns the new composite function.\n     * @see _.flowRight\n     * @example\n     *\n     * function square(n) {\n     *   return n * n;\n     * }\n     *\n     * var addSquare = _.flow([_.add, square]);\n     * addSquare(1, 2);\n     * // => 9\n     */\n    var flow = createFlow();\n\n    /**\n     * This method is like `_.flow` except that it creates a function that\n     * invokes the given functions from right to left.\n     *\n     * @static\n     * @since 3.0.0\n     * @memberOf _\n     * @category Util\n     * @param {...(Function|Function[])} [funcs] The functions to invoke.\n     * @returns {Function} Returns the new composite function.\n     * @see _.flow\n     * @example\n     *\n     * function square(n) {\n     *   return n * n;\n     * }\n     *\n     * var addSquare = _.flowRight([square, _.add]);\n     * addSquare(1, 2);\n     * // => 9\n     */\n    var flowRight = createFlow(true);\n\n    /**\n     * This method returns the first argument it receives.\n     *\n     * @static\n     * @since 0.1.0\n     * @memberOf _\n     * @category Util\n     * @param {*} value Any value.\n     * @returns {*} Returns `value`.\n     * @example\n     *\n     * var object = { 'a': 1 };\n     *\n     * console.log(_.identity(object) === object);\n     * // => true\n     */\n    function identity(value) {\n      return value;\n    }\n\n    /**\n     * Creates a function that invokes `func` with the arguments of the created\n     * function. If `func` is a property name, the created function returns the\n     * property value for a given element. If `func` is an array or object, the\n     * created function returns `true` for elements that contain the equivalent\n     * source properties, otherwise it returns `false`.\n     *\n     * @static\n     * @since 4.0.0\n     * @memberOf _\n     * @category Util\n     * @param {*} [func=_.identity] The value to convert to a callback.\n     * @returns {Function} Returns the callback.\n     * @example\n     *\n     * var users = [\n     *   { 'user': 'barney', 'age': 36, 'active': true },\n     *   { 'user': 'fred',   'age': 40, 'active': false }\n     * ];\n     *\n     * // The `_.matches` iteratee shorthand.\n     * _.filter(users, _.iteratee({ 'user': 'barney', 'active': true }));\n     * // => [{ 'user': 'barney', 'age': 36, 'active': true }]\n     *\n     * // The `_.matchesProperty` iteratee shorthand.\n     * _.filter(users, _.iteratee(['user', 'fred']));\n     * // => [{ 'user': 'fred', 'age': 40 }]\n     *\n     * // The `_.property` iteratee shorthand.\n     * _.map(users, _.iteratee('user'));\n     * // => ['barney', 'fred']\n     *\n     * // Create custom iteratee shorthands.\n     * _.iteratee = _.wrap(_.iteratee, function(iteratee, func) {\n     *   return !_.isRegExp(func) ? iteratee(func) : function(string) {\n     *     return func.test(string);\n     *   };\n     * });\n     *\n     * _.filter(['abc', 'def'], /ef/);\n     * // => ['def']\n     */\n    function iteratee(func) {\n      return baseIteratee(typeof func == 'function' ? func : baseClone(func, CLONE_DEEP_FLAG));\n    }\n\n    /**\n     * Creates a function that performs a partial deep comparison between a given\n     * object and `source`, returning `true` if the given object has equivalent\n     * property values, else `false`.\n     *\n     * **Note:** The created function is equivalent to `_.isMatch` with `source`\n     * partially applied.\n     *\n     * Partial comparisons will match empty array and empty object `source`\n     * values against any array or object value, respectively. See `_.isEqual`\n     * for a list of supported value comparisons.\n     *\n     * **Note:** Multiple values can be checked by combining several matchers\n     * using `_.overSome`\n     *\n     * @static\n     * @memberOf _\n     * @since 3.0.0\n     * @category Util\n     * @param {Object} source The object of property values to match.\n     * @returns {Function} Returns the new spec function.\n     * @example\n     *\n     * var objects = [\n     *   { 'a': 1, 'b': 2, 'c': 3 },\n     *   { 'a': 4, 'b': 5, 'c': 6 }\n     * ];\n     *\n     * _.filter(objects, _.matches({ 'a': 4, 'c': 6 }));\n     * // => [{ 'a': 4, 'b': 5, 'c': 6 }]\n     *\n     * // Checking for several possible values\n     * _.filter(objects, _.overSome([_.matches({ 'a': 1 }), _.matches({ 'a': 4 })]));\n     * // => [{ 'a': 1, 'b': 2, 'c': 3 }, { 'a': 4, 'b': 5, 'c': 6 }]\n     */\n    function matches(source) {\n      return baseMatches(baseClone(source, CLONE_DEEP_FLAG));\n    }\n\n    /**\n     * Creates a function that performs a partial deep comparison between the\n     * value at `path` of a given object to `srcValue`, returning `true` if the\n     * object value is equivalent, else `false`.\n     *\n     * **Note:** Partial comparisons will match empty array and empty object\n     * `srcValue` values against any array or object value, respectively. See\n     * `_.isEqual` for a list of supported value comparisons.\n     *\n     * **Note:** Multiple values can be checked by combining several matchers\n     * using `_.overSome`\n     *\n     * @static\n     * @memberOf _\n     * @since 3.2.0\n     * @category Util\n     * @param {Array|string} path The path of the property to get.\n     * @param {*} srcValue The value to match.\n     * @returns {Function} Returns the new spec function.\n     * @example\n     *\n     * var objects = [\n     *   { 'a': 1, 'b': 2, 'c': 3 },\n     *   { 'a': 4, 'b': 5, 'c': 6 }\n     * ];\n     *\n     * _.find(objects, _.matchesProperty('a', 4));\n     * // => { 'a': 4, 'b': 5, 'c': 6 }\n     *\n     * // Checking for several possible values\n     * _.filter(objects, _.overSome([_.matchesProperty('a', 1), _.matchesProperty('a', 4)]));\n     * // => [{ 'a': 1, 'b': 2, 'c': 3 }, { 'a': 4, 'b': 5, 'c': 6 }]\n     */\n    function matchesProperty(path, srcValue) {\n      return baseMatchesProperty(path, baseClone(srcValue, CLONE_DEEP_FLAG));\n    }\n\n    /**\n     * Creates a function that invokes the method at `path` of a given object.\n     * Any additional arguments are provided to the invoked method.\n     *\n     * @static\n     * @memberOf _\n     * @since 3.7.0\n     * @category Util\n     * @param {Array|string} path The path of the method to invoke.\n     * @param {...*} [args] The arguments to invoke the method with.\n     * @returns {Function} Returns the new invoker function.\n     * @example\n     *\n     * var objects = [\n     *   { 'a': { 'b': _.constant(2) } },\n     *   { 'a': { 'b': _.constant(1) } }\n     * ];\n     *\n     * _.map(objects, _.method('a.b'));\n     * // => [2, 1]\n     *\n     * _.map(objects, _.method(['a', 'b']));\n     * // => [2, 1]\n     */\n    var method = baseRest(function(path, args) {\n      return function(object) {\n        return baseInvoke(object, path, args);\n      };\n    });\n\n    /**\n     * The opposite of `_.method`; this method creates a function that invokes\n     * the method at a given path of `object`. Any additional arguments are\n     * provided to the invoked method.\n     *\n     * @static\n     * @memberOf _\n     * @since 3.7.0\n     * @category Util\n     * @param {Object} object The object to query.\n     * @param {...*} [args] The arguments to invoke the method with.\n     * @returns {Function} Returns the new invoker function.\n     * @example\n     *\n     * var array = _.times(3, _.constant),\n     *     object = { 'a': array, 'b': array, 'c': array };\n     *\n     * _.map(['a[2]', 'c[0]'], _.methodOf(object));\n     * // => [2, 0]\n     *\n     * _.map([['a', '2'], ['c', '0']], _.methodOf(object));\n     * // => [2, 0]\n     */\n    var methodOf = baseRest(function(object, args) {\n      return function(path) {\n        return baseInvoke(object, path, args);\n      };\n    });\n\n    /**\n     * Adds all own enumerable string keyed function properties of a source\n     * object to the destination object. If `object` is a function, then methods\n     * are added to its prototype as well.\n     *\n     * **Note:** Use `_.runInContext` to create a pristine `lodash` function to\n     * avoid conflicts caused by modifying the original.\n     *\n     * @static\n     * @since 0.1.0\n     * @memberOf _\n     * @category Util\n     * @param {Function|Object} [object=lodash] The destination object.\n     * @param {Object} source The object of functions to add.\n     * @param {Object} [options={}] The options object.\n     * @param {boolean} [options.chain=true] Specify whether mixins are chainable.\n     * @returns {Function|Object} Returns `object`.\n     * @example\n     *\n     * function vowels(string) {\n     *   return _.filter(string, function(v) {\n     *     return /[aeiou]/i.test(v);\n     *   });\n     * }\n     *\n     * _.mixin({ 'vowels': vowels });\n     * _.vowels('fred');\n     * // => ['e']\n     *\n     * _('fred').vowels().value();\n     * // => ['e']\n     *\n     * _.mixin({ 'vowels': vowels }, { 'chain': false });\n     * _('fred').vowels();\n     * // => ['e']\n     */\n    function mixin(object, source, options) {\n      var props = keys(source),\n          methodNames = baseFunctions(source, props);\n\n      if (options == null &&\n          !(isObject(source) && (methodNames.length || !props.length))) {\n        options = source;\n        source = object;\n        object = this;\n        methodNames = baseFunctions(source, keys(source));\n      }\n      var chain = !(isObject(options) && 'chain' in options) || !!options.chain,\n          isFunc = isFunction(object);\n\n      arrayEach(methodNames, function(methodName) {\n        var func = source[methodName];\n        object[methodName] = func;\n        if (isFunc) {\n          object.prototype[methodName] = function() {\n            var chainAll = this.__chain__;\n            if (chain || chainAll) {\n              var result = object(this.__wrapped__),\n                  actions = result.__actions__ = copyArray(this.__actions__);\n\n              actions.push({ 'func': func, 'args': arguments, 'thisArg': object });\n              result.__chain__ = chainAll;\n              return result;\n            }\n            return func.apply(object, arrayPush([this.value()], arguments));\n          };\n        }\n      });\n\n      return object;\n    }\n\n    /**\n     * Reverts the `_` variable to its previous value and returns a reference to\n     * the `lodash` function.\n     *\n     * @static\n     * @since 0.1.0\n     * @memberOf _\n     * @category Util\n     * @returns {Function} Returns the `lodash` function.\n     * @example\n     *\n     * var lodash = _.noConflict();\n     */\n    function noConflict() {\n      if (root._ === this) {\n        root._ = oldDash;\n      }\n      return this;\n    }\n\n    /**\n     * This method returns `undefined`.\n     *\n     * @static\n     * @memberOf _\n     * @since 2.3.0\n     * @category Util\n     * @example\n     *\n     * _.times(2, _.noop);\n     * // => [undefined, undefined]\n     */\n    function noop() {\n      // No operation performed.\n    }\n\n    /**\n     * Creates a function that gets the argument at index `n`. If `n` is negative,\n     * the nth argument from the end is returned.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Util\n     * @param {number} [n=0] The index of the argument to return.\n     * @returns {Function} Returns the new pass-thru function.\n     * @example\n     *\n     * var func = _.nthArg(1);\n     * func('a', 'b', 'c', 'd');\n     * // => 'b'\n     *\n     * var func = _.nthArg(-2);\n     * func('a', 'b', 'c', 'd');\n     * // => 'c'\n     */\n    function nthArg(n) {\n      n = toInteger(n);\n      return baseRest(function(args) {\n        return baseNth(args, n);\n      });\n    }\n\n    /**\n     * Creates a function that invokes `iteratees` with the arguments it receives\n     * and returns their results.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Util\n     * @param {...(Function|Function[])} [iteratees=[_.identity]]\n     *  The iteratees to invoke.\n     * @returns {Function} Returns the new function.\n     * @example\n     *\n     * var func = _.over([Math.max, Math.min]);\n     *\n     * func(1, 2, 3, 4);\n     * // => [4, 1]\n     */\n    var over = createOver(arrayMap);\n\n    /**\n     * Creates a function that checks if **all** of the `predicates` return\n     * truthy when invoked with the arguments it receives.\n     *\n     * Following shorthands are possible for providing predicates.\n     * Pass an `Object` and it will be used as an parameter for `_.matches` to create the predicate.\n     * Pass an `Array` of parameters for `_.matchesProperty` and the predicate will be created using them.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Util\n     * @param {...(Function|Function[])} [predicates=[_.identity]]\n     *  The predicates to check.\n     * @returns {Function} Returns the new function.\n     * @example\n     *\n     * var func = _.overEvery([Boolean, isFinite]);\n     *\n     * func('1');\n     * // => true\n     *\n     * func(null);\n     * // => false\n     *\n     * func(NaN);\n     * // => false\n     */\n    var overEvery = createOver(arrayEvery);\n\n    /**\n     * Creates a function that checks if **any** of the `predicates` return\n     * truthy when invoked with the arguments it receives.\n     *\n     * Following shorthands are possible for providing predicates.\n     * Pass an `Object` and it will be used as an parameter for `_.matches` to create the predicate.\n     * Pass an `Array` of parameters for `_.matchesProperty` and the predicate will be created using them.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Util\n     * @param {...(Function|Function[])} [predicates=[_.identity]]\n     *  The predicates to check.\n     * @returns {Function} Returns the new function.\n     * @example\n     *\n     * var func = _.overSome([Boolean, isFinite]);\n     *\n     * func('1');\n     * // => true\n     *\n     * func(null);\n     * // => true\n     *\n     * func(NaN);\n     * // => false\n     *\n     * var matchesFunc = _.overSome([{ 'a': 1 }, { 'a': 2 }])\n     * var matchesPropertyFunc = _.overSome([['a', 1], ['a', 2]])\n     */\n    var overSome = createOver(arraySome);\n\n    /**\n     * Creates a function that returns the value at `path` of a given object.\n     *\n     * @static\n     * @memberOf _\n     * @since 2.4.0\n     * @category Util\n     * @param {Array|string} path The path of the property to get.\n     * @returns {Function} Returns the new accessor function.\n     * @example\n     *\n     * var objects = [\n     *   { 'a': { 'b': 2 } },\n     *   { 'a': { 'b': 1 } }\n     * ];\n     *\n     * _.map(objects, _.property('a.b'));\n     * // => [2, 1]\n     *\n     * _.map(_.sortBy(objects, _.property(['a', 'b'])), 'a.b');\n     * // => [1, 2]\n     */\n    function property(path) {\n      return isKey(path) ? baseProperty(toKey(path)) : basePropertyDeep(path);\n    }\n\n    /**\n     * The opposite of `_.property`; this method creates a function that returns\n     * the value at a given path of `object`.\n     *\n     * @static\n     * @memberOf _\n     * @since 3.0.0\n     * @category Util\n     * @param {Object} object The object to query.\n     * @returns {Function} Returns the new accessor function.\n     * @example\n     *\n     * var array = [0, 1, 2],\n     *     object = { 'a': array, 'b': array, 'c': array };\n     *\n     * _.map(['a[2]', 'c[0]'], _.propertyOf(object));\n     * // => [2, 0]\n     *\n     * _.map([['a', '2'], ['c', '0']], _.propertyOf(object));\n     * // => [2, 0]\n     */\n    function propertyOf(object) {\n      return function(path) {\n        return object == null ? undefined : baseGet(object, path);\n      };\n    }\n\n    /**\n     * Creates an array of numbers (positive and/or negative) progressing from\n     * `start` up to, but not including, `end`. A step of `-1` is used if a negative\n     * `start` is specified without an `end` or `step`. If `end` is not specified,\n     * it's set to `start` with `start` then set to `0`.\n     *\n     * **Note:** JavaScript follows the IEEE-754 standard for resolving\n     * floating-point values which can produce unexpected results.\n     *\n     * @static\n     * @since 0.1.0\n     * @memberOf _\n     * @category Util\n     * @param {number} [start=0] The start of the range.\n     * @param {number} end The end of the range.\n     * @param {number} [step=1] The value to increment or decrement by.\n     * @returns {Array} Returns the range of numbers.\n     * @see _.inRange, _.rangeRight\n     * @example\n     *\n     * _.range(4);\n     * // => [0, 1, 2, 3]\n     *\n     * _.range(-4);\n     * // => [0, -1, -2, -3]\n     *\n     * _.range(1, 5);\n     * // => [1, 2, 3, 4]\n     *\n     * _.range(0, 20, 5);\n     * // => [0, 5, 10, 15]\n     *\n     * _.range(0, -4, -1);\n     * // => [0, -1, -2, -3]\n     *\n     * _.range(1, 4, 0);\n     * // => [1, 1, 1]\n     *\n     * _.range(0);\n     * // => []\n     */\n    var range = createRange();\n\n    /**\n     * This method is like `_.range` except that it populates values in\n     * descending order.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Util\n     * @param {number} [start=0] The start of the range.\n     * @param {number} end The end of the range.\n     * @param {number} [step=1] The value to increment or decrement by.\n     * @returns {Array} Returns the range of numbers.\n     * @see _.inRange, _.range\n     * @example\n     *\n     * _.rangeRight(4);\n     * // => [3, 2, 1, 0]\n     *\n     * _.rangeRight(-4);\n     * // => [-3, -2, -1, 0]\n     *\n     * _.rangeRight(1, 5);\n     * // => [4, 3, 2, 1]\n     *\n     * _.rangeRight(0, 20, 5);\n     * // => [15, 10, 5, 0]\n     *\n     * _.rangeRight(0, -4, -1);\n     * // => [-3, -2, -1, 0]\n     *\n     * _.rangeRight(1, 4, 0);\n     * // => [1, 1, 1]\n     *\n     * _.rangeRight(0);\n     * // => []\n     */\n    var rangeRight = createRange(true);\n\n    /**\n     * This method returns a new empty array.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.13.0\n     * @category Util\n     * @returns {Array} Returns the new empty array.\n     * @example\n     *\n     * var arrays = _.times(2, _.stubArray);\n     *\n     * console.log(arrays);\n     * // => [[], []]\n     *\n     * console.log(arrays[0] === arrays[1]);\n     * // => false\n     */\n    function stubArray() {\n      return [];\n    }\n\n    /**\n     * This method returns `false`.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.13.0\n     * @category Util\n     * @returns {boolean} Returns `false`.\n     * @example\n     *\n     * _.times(2, _.stubFalse);\n     * // => [false, false]\n     */\n    function stubFalse() {\n      return false;\n    }\n\n    /**\n     * This method returns a new empty object.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.13.0\n     * @category Util\n     * @returns {Object} Returns the new empty object.\n     * @example\n     *\n     * var objects = _.times(2, _.stubObject);\n     *\n     * console.log(objects);\n     * // => [{}, {}]\n     *\n     * console.log(objects[0] === objects[1]);\n     * // => false\n     */\n    function stubObject() {\n      return {};\n    }\n\n    /**\n     * This method returns an empty string.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.13.0\n     * @category Util\n     * @returns {string} Returns the empty string.\n     * @example\n     *\n     * _.times(2, _.stubString);\n     * // => ['', '']\n     */\n    function stubString() {\n      return '';\n    }\n\n    /**\n     * This method returns `true`.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.13.0\n     * @category Util\n     * @returns {boolean} Returns `true`.\n     * @example\n     *\n     * _.times(2, _.stubTrue);\n     * // => [true, true]\n     */\n    function stubTrue() {\n      return true;\n    }\n\n    /**\n     * Invokes the iteratee `n` times, returning an array of the results of\n     * each invocation. The iteratee is invoked with one argument; (index).\n     *\n     * @static\n     * @since 0.1.0\n     * @memberOf _\n     * @category Util\n     * @param {number} n The number of times to invoke `iteratee`.\n     * @param {Function} [iteratee=_.identity] The function invoked per iteration.\n     * @returns {Array} Returns the array of results.\n     * @example\n     *\n     * _.times(3, String);\n     * // => ['0', '1', '2']\n     *\n     *  _.times(4, _.constant(0));\n     * // => [0, 0, 0, 0]\n     */\n    function times(n, iteratee) {\n      n = toInteger(n);\n      if (n < 1 || n > MAX_SAFE_INTEGER) {\n        return [];\n      }\n      var index = MAX_ARRAY_LENGTH,\n          length = nativeMin(n, MAX_ARRAY_LENGTH);\n\n      iteratee = getIteratee(iteratee);\n      n -= MAX_ARRAY_LENGTH;\n\n      var result = baseTimes(length, iteratee);\n      while (++index < n) {\n        iteratee(index);\n      }\n      return result;\n    }\n\n    /**\n     * Converts `value` to a property path array.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Util\n     * @param {*} value The value to convert.\n     * @returns {Array} Returns the new property path array.\n     * @example\n     *\n     * _.toPath('a.b.c');\n     * // => ['a', 'b', 'c']\n     *\n     * _.toPath('a[0].b.c');\n     * // => ['a', '0', 'b', 'c']\n     */\n    function toPath(value) {\n      if (isArray(value)) {\n        return arrayMap(value, toKey);\n      }\n      return isSymbol(value) ? [value] : copyArray(stringToPath(toString(value)));\n    }\n\n    /**\n     * Generates a unique ID. If `prefix` is given, the ID is appended to it.\n     *\n     * @static\n     * @since 0.1.0\n     * @memberOf _\n     * @category Util\n     * @param {string} [prefix=''] The value to prefix the ID with.\n     * @returns {string} Returns the unique ID.\n     * @example\n     *\n     * _.uniqueId('contact_');\n     * // => 'contact_104'\n     *\n     * _.uniqueId();\n     * // => '105'\n     */\n    function uniqueId(prefix) {\n      var id = ++idCounter;\n      return toString(prefix) + id;\n    }\n\n    /*------------------------------------------------------------------------*/\n\n    /**\n     * Adds two numbers.\n     *\n     * @static\n     * @memberOf _\n     * @since 3.4.0\n     * @category Math\n     * @param {number} augend The first number in an addition.\n     * @param {number} addend The second number in an addition.\n     * @returns {number} Returns the total.\n     * @example\n     *\n     * _.add(6, 4);\n     * // => 10\n     */\n    var add = createMathOperation(function(augend, addend) {\n      return augend + addend;\n    }, 0);\n\n    /**\n     * Computes `number` rounded up to `precision`.\n     *\n     * @static\n     * @memberOf _\n     * @since 3.10.0\n     * @category Math\n     * @param {number} number The number to round up.\n     * @param {number} [precision=0] The precision to round up to.\n     * @returns {number} Returns the rounded up number.\n     * @example\n     *\n     * _.ceil(4.006);\n     * // => 5\n     *\n     * _.ceil(6.004, 2);\n     * // => 6.01\n     *\n     * _.ceil(6040, -2);\n     * // => 6100\n     */\n    var ceil = createRound('ceil');\n\n    /**\n     * Divide two numbers.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.7.0\n     * @category Math\n     * @param {number} dividend The first number in a division.\n     * @param {number} divisor The second number in a division.\n     * @returns {number} Returns the quotient.\n     * @example\n     *\n     * _.divide(6, 4);\n     * // => 1.5\n     */\n    var divide = createMathOperation(function(dividend, divisor) {\n      return dividend / divisor;\n    }, 1);\n\n    /**\n     * Computes `number` rounded down to `precision`.\n     *\n     * @static\n     * @memberOf _\n     * @since 3.10.0\n     * @category Math\n     * @param {number} number The number to round down.\n     * @param {number} [precision=0] The precision to round down to.\n     * @returns {number} Returns the rounded down number.\n     * @example\n     *\n     * _.floor(4.006);\n     * // => 4\n     *\n     * _.floor(0.046, 2);\n     * // => 0.04\n     *\n     * _.floor(4060, -2);\n     * // => 4000\n     */\n    var floor = createRound('floor');\n\n    /**\n     * Computes the maximum value of `array`. If `array` is empty or falsey,\n     * `undefined` is returned.\n     *\n     * @static\n     * @since 0.1.0\n     * @memberOf _\n     * @category Math\n     * @param {Array} array The array to iterate over.\n     * @returns {*} Returns the maximum value.\n     * @example\n     *\n     * _.max([4, 2, 8, 6]);\n     * // => 8\n     *\n     * _.max([]);\n     * // => undefined\n     */\n    function max(array) {\n      return (array && array.length)\n        ? baseExtremum(array, identity, baseGt)\n        : undefined;\n    }\n\n    /**\n     * This method is like `_.max` except that it accepts `iteratee` which is\n     * invoked for each element in `array` to generate the criterion by which\n     * the value is ranked. The iteratee is invoked with one argument: (value).\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Math\n     * @param {Array} array The array to iterate over.\n     * @param {Function} [iteratee=_.identity] The iteratee invoked per element.\n     * @returns {*} Returns the maximum value.\n     * @example\n     *\n     * var objects = [{ 'n': 1 }, { 'n': 2 }];\n     *\n     * _.maxBy(objects, function(o) { return o.n; });\n     * // => { 'n': 2 }\n     *\n     * // The `_.property` iteratee shorthand.\n     * _.maxBy(objects, 'n');\n     * // => { 'n': 2 }\n     */\n    function maxBy(array, iteratee) {\n      return (array && array.length)\n        ? baseExtremum(array, getIteratee(iteratee, 2), baseGt)\n        : undefined;\n    }\n\n    /**\n     * Computes the mean of the values in `array`.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Math\n     * @param {Array} array The array to iterate over.\n     * @returns {number} Returns the mean.\n     * @example\n     *\n     * _.mean([4, 2, 8, 6]);\n     * // => 5\n     */\n    function mean(array) {\n      return baseMean(array, identity);\n    }\n\n    /**\n     * This method is like `_.mean` except that it accepts `iteratee` which is\n     * invoked for each element in `array` to generate the value to be averaged.\n     * The iteratee is invoked with one argument: (value).\n     *\n     * @static\n     * @memberOf _\n     * @since 4.7.0\n     * @category Math\n     * @param {Array} array The array to iterate over.\n     * @param {Function} [iteratee=_.identity] The iteratee invoked per element.\n     * @returns {number} Returns the mean.\n     * @example\n     *\n     * var objects = [{ 'n': 4 }, { 'n': 2 }, { 'n': 8 }, { 'n': 6 }];\n     *\n     * _.meanBy(objects, function(o) { return o.n; });\n     * // => 5\n     *\n     * // The `_.property` iteratee shorthand.\n     * _.meanBy(objects, 'n');\n     * // => 5\n     */\n    function meanBy(array, iteratee) {\n      return baseMean(array, getIteratee(iteratee, 2));\n    }\n\n    /**\n     * Computes the minimum value of `array`. If `array` is empty or falsey,\n     * `undefined` is returned.\n     *\n     * @static\n     * @since 0.1.0\n     * @memberOf _\n     * @category Math\n     * @param {Array} array The array to iterate over.\n     * @returns {*} Returns the minimum value.\n     * @example\n     *\n     * _.min([4, 2, 8, 6]);\n     * // => 2\n     *\n     * _.min([]);\n     * // => undefined\n     */\n    function min(array) {\n      return (array && array.length)\n        ? baseExtremum(array, identity, baseLt)\n        : undefined;\n    }\n\n    /**\n     * This method is like `_.min` except that it accepts `iteratee` which is\n     * invoked for each element in `array` to generate the criterion by which\n     * the value is ranked. The iteratee is invoked with one argument: (value).\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Math\n     * @param {Array} array The array to iterate over.\n     * @param {Function} [iteratee=_.identity] The iteratee invoked per element.\n     * @returns {*} Returns the minimum value.\n     * @example\n     *\n     * var objects = [{ 'n': 1 }, { 'n': 2 }];\n     *\n     * _.minBy(objects, function(o) { return o.n; });\n     * // => { 'n': 1 }\n     *\n     * // The `_.property` iteratee shorthand.\n     * _.minBy(objects, 'n');\n     * // => { 'n': 1 }\n     */\n    function minBy(array, iteratee) {\n      return (array && array.length)\n        ? baseExtremum(array, getIteratee(iteratee, 2), baseLt)\n        : undefined;\n    }\n\n    /**\n     * Multiply two numbers.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.7.0\n     * @category Math\n     * @param {number} multiplier The first number in a multiplication.\n     * @param {number} multiplicand The second number in a multiplication.\n     * @returns {number} Returns the product.\n     * @example\n     *\n     * _.multiply(6, 4);\n     * // => 24\n     */\n    var multiply = createMathOperation(function(multiplier, multiplicand) {\n      return multiplier * multiplicand;\n    }, 1);\n\n    /**\n     * Computes `number` rounded to `precision`.\n     *\n     * @static\n     * @memberOf _\n     * @since 3.10.0\n     * @category Math\n     * @param {number} number The number to round.\n     * @param {number} [precision=0] The precision to round to.\n     * @returns {number} Returns the rounded number.\n     * @example\n     *\n     * _.round(4.006);\n     * // => 4\n     *\n     * _.round(4.006, 2);\n     * // => 4.01\n     *\n     * _.round(4060, -2);\n     * // => 4100\n     */\n    var round = createRound('round');\n\n    /**\n     * Subtract two numbers.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Math\n     * @param {number} minuend The first number in a subtraction.\n     * @param {number} subtrahend The second number in a subtraction.\n     * @returns {number} Returns the difference.\n     * @example\n     *\n     * _.subtract(6, 4);\n     * // => 2\n     */\n    var subtract = createMathOperation(function(minuend, subtrahend) {\n      return minuend - subtrahend;\n    }, 0);\n\n    /**\n     * Computes the sum of the values in `array`.\n     *\n     * @static\n     * @memberOf _\n     * @since 3.4.0\n     * @category Math\n     * @param {Array} array The array to iterate over.\n     * @returns {number} Returns the sum.\n     * @example\n     *\n     * _.sum([4, 2, 8, 6]);\n     * // => 20\n     */\n    function sum(array) {\n      return (array && array.length)\n        ? baseSum(array, identity)\n        : 0;\n    }\n\n    /**\n     * This method is like `_.sum` except that it accepts `iteratee` which is\n     * invoked for each element in `array` to generate the value to be summed.\n     * The iteratee is invoked with one argument: (value).\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Math\n     * @param {Array} array The array to iterate over.\n     * @param {Function} [iteratee=_.identity] The iteratee invoked per element.\n     * @returns {number} Returns the sum.\n     * @example\n     *\n     * var objects = [{ 'n': 4 }, { 'n': 2 }, { 'n': 8 }, { 'n': 6 }];\n     *\n     * _.sumBy(objects, function(o) { return o.n; });\n     * // => 20\n     *\n     * // The `_.property` iteratee shorthand.\n     * _.sumBy(objects, 'n');\n     * // => 20\n     */\n    function sumBy(array, iteratee) {\n      return (array && array.length)\n        ? baseSum(array, getIteratee(iteratee, 2))\n        : 0;\n    }\n\n    /*------------------------------------------------------------------------*/\n\n    // Add methods that return wrapped values in chain sequences.\n    lodash.after = after;\n    lodash.ary = ary;\n    lodash.assign = assign;\n    lodash.assignIn = assignIn;\n    lodash.assignInWith = assignInWith;\n    lodash.assignWith = assignWith;\n    lodash.at = at;\n    lodash.before = before;\n    lodash.bind = bind;\n    lodash.bindAll = bindAll;\n    lodash.bindKey = bindKey;\n    lodash.castArray = castArray;\n    lodash.chain = chain;\n    lodash.chunk = chunk;\n    lodash.compact = compact;\n    lodash.concat = concat;\n    lodash.cond = cond;\n    lodash.conforms = conforms;\n    lodash.constant = constant;\n    lodash.countBy = countBy;\n    lodash.create = create;\n    lodash.curry = curry;\n    lodash.curryRight = curryRight;\n    lodash.debounce = debounce;\n    lodash.defaults = defaults;\n    lodash.defaultsDeep = defaultsDeep;\n    lodash.defer = defer;\n    lodash.delay = delay;\n    lodash.difference = difference;\n    lodash.differenceBy = differenceBy;\n    lodash.differenceWith = differenceWith;\n    lodash.drop = drop;\n    lodash.dropRight = dropRight;\n    lodash.dropRightWhile = dropRightWhile;\n    lodash.dropWhile = dropWhile;\n    lodash.fill = fill;\n    lodash.filter = filter;\n    lodash.flatMap = flatMap;\n    lodash.flatMapDeep = flatMapDeep;\n    lodash.flatMapDepth = flatMapDepth;\n    lodash.flatten = flatten;\n    lodash.flattenDeep = flattenDeep;\n    lodash.flattenDepth = flattenDepth;\n    lodash.flip = flip;\n    lodash.flow = flow;\n    lodash.flowRight = flowRight;\n    lodash.fromPairs = fromPairs;\n    lodash.functions = functions;\n    lodash.functionsIn = functionsIn;\n    lodash.groupBy = groupBy;\n    lodash.initial = initial;\n    lodash.intersection = intersection;\n    lodash.intersectionBy = intersectionBy;\n    lodash.intersectionWith = intersectionWith;\n    lodash.invert = invert;\n    lodash.invertBy = invertBy;\n    lodash.invokeMap = invokeMap;\n    lodash.iteratee = iteratee;\n    lodash.keyBy = keyBy;\n    lodash.keys = keys;\n    lodash.keysIn = keysIn;\n    lodash.map = map;\n    lodash.mapKeys = mapKeys;\n    lodash.mapValues = mapValues;\n    lodash.matches = matches;\n    lodash.matchesProperty = matchesProperty;\n    lodash.memoize = memoize;\n    lodash.merge = merge;\n    lodash.mergeWith = mergeWith;\n    lodash.method = method;\n    lodash.methodOf = methodOf;\n    lodash.mixin = mixin;\n    lodash.negate = negate;\n    lodash.nthArg = nthArg;\n    lodash.omit = omit;\n    lodash.omitBy = omitBy;\n    lodash.once = once;\n    lodash.orderBy = orderBy;\n    lodash.over = over;\n    lodash.overArgs = overArgs;\n    lodash.overEvery = overEvery;\n    lodash.overSome = overSome;\n    lodash.partial = partial;\n    lodash.partialRight = partialRight;\n    lodash.partition = partition;\n    lodash.pick = pick;\n    lodash.pickBy = pickBy;\n    lodash.property = property;\n    lodash.propertyOf = propertyOf;\n    lodash.pull = pull;\n    lodash.pullAll = pullAll;\n    lodash.pullAllBy = pullAllBy;\n    lodash.pullAllWith = pullAllWith;\n    lodash.pullAt = pullAt;\n    lodash.range = range;\n    lodash.rangeRight = rangeRight;\n    lodash.rearg = rearg;\n    lodash.reject = reject;\n    lodash.remove = remove;\n    lodash.rest = rest;\n    lodash.reverse = reverse;\n    lodash.sampleSize = sampleSize;\n    lodash.set = set;\n    lodash.setWith = setWith;\n    lodash.shuffle = shuffle;\n    lodash.slice = slice;\n    lodash.sortBy = sortBy;\n    lodash.sortedUniq = sortedUniq;\n    lodash.sortedUniqBy = sortedUniqBy;\n    lodash.split = split;\n    lodash.spread = spread;\n    lodash.tail = tail;\n    lodash.take = take;\n    lodash.takeRight = takeRight;\n    lodash.takeRightWhile = takeRightWhile;\n    lodash.takeWhile = takeWhile;\n    lodash.tap = tap;\n    lodash.throttle = throttle;\n    lodash.thru = thru;\n    lodash.toArray = toArray;\n    lodash.toPairs = toPairs;\n    lodash.toPairsIn = toPairsIn;\n    lodash.toPath = toPath;\n    lodash.toPlainObject = toPlainObject;\n    lodash.transform = transform;\n    lodash.unary = unary;\n    lodash.union = union;\n    lodash.unionBy = unionBy;\n    lodash.unionWith = unionWith;\n    lodash.uniq = uniq;\n    lodash.uniqBy = uniqBy;\n    lodash.uniqWith = uniqWith;\n    lodash.unset = unset;\n    lodash.unzip = unzip;\n    lodash.unzipWith = unzipWith;\n    lodash.update = update;\n    lodash.updateWith = updateWith;\n    lodash.values = values;\n    lodash.valuesIn = valuesIn;\n    lodash.without = without;\n    lodash.words = words;\n    lodash.wrap = wrap;\n    lodash.xor = xor;\n    lodash.xorBy = xorBy;\n    lodash.xorWith = xorWith;\n    lodash.zip = zip;\n    lodash.zipObject = zipObject;\n    lodash.zipObjectDeep = zipObjectDeep;\n    lodash.zipWith = zipWith;\n\n    // Add aliases.\n    lodash.entries = toPairs;\n    lodash.entriesIn = toPairsIn;\n    lodash.extend = assignIn;\n    lodash.extendWith = assignInWith;\n\n    // Add methods to `lodash.prototype`.\n    mixin(lodash, lodash);\n\n    /*------------------------------------------------------------------------*/\n\n    // Add methods that return unwrapped values in chain sequences.\n    lodash.add = add;\n    lodash.attempt = attempt;\n    lodash.camelCase = camelCase;\n    lodash.capitalize = capitalize;\n    lodash.ceil = ceil;\n    lodash.clamp = clamp;\n    lodash.clone = clone;\n    lodash.cloneDeep = cloneDeep;\n    lodash.cloneDeepWith = cloneDeepWith;\n    lodash.cloneWith = cloneWith;\n    lodash.conformsTo = conformsTo;\n    lodash.deburr = deburr;\n    lodash.defaultTo = defaultTo;\n    lodash.divide = divide;\n    lodash.endsWith = endsWith;\n    lodash.eq = eq;\n    lodash.escape = escape;\n    lodash.escapeRegExp = escapeRegExp;\n    lodash.every = every;\n    lodash.find = find;\n    lodash.findIndex = findIndex;\n    lodash.findKey = findKey;\n    lodash.findLast = findLast;\n    lodash.findLastIndex = findLastIndex;\n    lodash.findLastKey = findLastKey;\n    lodash.floor = floor;\n    lodash.forEach = forEach;\n    lodash.forEachRight = forEachRight;\n    lodash.forIn = forIn;\n    lodash.forInRight = forInRight;\n    lodash.forOwn = forOwn;\n    lodash.forOwnRight = forOwnRight;\n    lodash.get = get;\n    lodash.gt = gt;\n    lodash.gte = gte;\n    lodash.has = has;\n    lodash.hasIn = hasIn;\n    lodash.head = head;\n    lodash.identity = identity;\n    lodash.includes = includes;\n    lodash.indexOf = indexOf;\n    lodash.inRange = inRange;\n    lodash.invoke = invoke;\n    lodash.isArguments = isArguments;\n    lodash.isArray = isArray;\n    lodash.isArrayBuffer = isArrayBuffer;\n    lodash.isArrayLike = isArrayLike;\n    lodash.isArrayLikeObject = isArrayLikeObject;\n    lodash.isBoolean = isBoolean;\n    lodash.isBuffer = isBuffer;\n    lodash.isDate = isDate;\n    lodash.isElement = isElement;\n    lodash.isEmpty = isEmpty;\n    lodash.isEqual = isEqual;\n    lodash.isEqualWith = isEqualWith;\n    lodash.isError = isError;\n    lodash.isFinite = isFinite;\n    lodash.isFunction = isFunction;\n    lodash.isInteger = isInteger;\n    lodash.isLength = isLength;\n    lodash.isMap = isMap;\n    lodash.isMatch = isMatch;\n    lodash.isMatchWith = isMatchWith;\n    lodash.isNaN = isNaN;\n    lodash.isNative = isNative;\n    lodash.isNil = isNil;\n    lodash.isNull = isNull;\n    lodash.isNumber = isNumber;\n    lodash.isObject = isObject;\n    lodash.isObjectLike = isObjectLike;\n    lodash.isPlainObject = isPlainObject;\n    lodash.isRegExp = isRegExp;\n    lodash.isSafeInteger = isSafeInteger;\n    lodash.isSet = isSet;\n    lodash.isString = isString;\n    lodash.isSymbol = isSymbol;\n    lodash.isTypedArray = isTypedArray;\n    lodash.isUndefined = isUndefined;\n    lodash.isWeakMap = isWeakMap;\n    lodash.isWeakSet = isWeakSet;\n    lodash.join = join;\n    lodash.kebabCase = kebabCase;\n    lodash.last = last;\n    lodash.lastIndexOf = lastIndexOf;\n    lodash.lowerCase = lowerCase;\n    lodash.lowerFirst = lowerFirst;\n    lodash.lt = lt;\n    lodash.lte = lte;\n    lodash.max = max;\n    lodash.maxBy = maxBy;\n    lodash.mean = mean;\n    lodash.meanBy = meanBy;\n    lodash.min = min;\n    lodash.minBy = minBy;\n    lodash.stubArray = stubArray;\n    lodash.stubFalse = stubFalse;\n    lodash.stubObject = stubObject;\n    lodash.stubString = stubString;\n    lodash.stubTrue = stubTrue;\n    lodash.multiply = multiply;\n    lodash.nth = nth;\n    lodash.noConflict = noConflict;\n    lodash.noop = noop;\n    lodash.now = now;\n    lodash.pad = pad;\n    lodash.padEnd = padEnd;\n    lodash.padStart = padStart;\n    lodash.parseInt = parseInt;\n    lodash.random = random;\n    lodash.reduce = reduce;\n    lodash.reduceRight = reduceRight;\n    lodash.repeat = repeat;\n    lodash.replace = replace;\n    lodash.result = result;\n    lodash.round = round;\n    lodash.runInContext = runInContext;\n    lodash.sample = sample;\n    lodash.size = size;\n    lodash.snakeCase = snakeCase;\n    lodash.some = some;\n    lodash.sortedIndex = sortedIndex;\n    lodash.sortedIndexBy = sortedIndexBy;\n    lodash.sortedIndexOf = sortedIndexOf;\n    lodash.sortedLastIndex = sortedLastIndex;\n    lodash.sortedLastIndexBy = sortedLastIndexBy;\n    lodash.sortedLastIndexOf = sortedLastIndexOf;\n    lodash.startCase = startCase;\n    lodash.startsWith = startsWith;\n    lodash.subtract = subtract;\n    lodash.sum = sum;\n    lodash.sumBy = sumBy;\n    lodash.template = template;\n    lodash.times = times;\n    lodash.toFinite = toFinite;\n    lodash.toInteger = toInteger;\n    lodash.toLength = toLength;\n    lodash.toLower = toLower;\n    lodash.toNumber = toNumber;\n    lodash.toSafeInteger = toSafeInteger;\n    lodash.toString = toString;\n    lodash.toUpper = toUpper;\n    lodash.trim = trim;\n    lodash.trimEnd = trimEnd;\n    lodash.trimStart = trimStart;\n    lodash.truncate = truncate;\n    lodash.unescape = unescape;\n    lodash.uniqueId = uniqueId;\n    lodash.upperCase = upperCase;\n    lodash.upperFirst = upperFirst;\n\n    // Add aliases.\n    lodash.each = forEach;\n    lodash.eachRight = forEachRight;\n    lodash.first = head;\n\n    mixin(lodash, (function() {\n      var source = {};\n      baseForOwn(lodash, function(func, methodName) {\n        if (!hasOwnProperty.call(lodash.prototype, methodName)) {\n          source[methodName] = func;\n        }\n      });\n      return source;\n    }()), { 'chain': false });\n\n    /*------------------------------------------------------------------------*/\n\n    /**\n     * The semantic version number.\n     *\n     * @static\n     * @memberOf _\n     * @type {string}\n     */\n    lodash.VERSION = VERSION;\n\n    // Assign default placeholders.\n    arrayEach(['bind', 'bindKey', 'curry', 'curryRight', 'partial', 'partialRight'], function(methodName) {\n      lodash[methodName].placeholder = lodash;\n    });\n\n    // Add `LazyWrapper` methods for `_.drop` and `_.take` variants.\n    arrayEach(['drop', 'take'], function(methodName, index) {\n      LazyWrapper.prototype[methodName] = function(n) {\n        n = n === undefined ? 1 : nativeMax(toInteger(n), 0);\n\n        var result = (this.__filtered__ && !index)\n          ? new LazyWrapper(this)\n          : this.clone();\n\n        if (result.__filtered__) {\n          result.__takeCount__ = nativeMin(n, result.__takeCount__);\n        } else {\n          result.__views__.push({\n            'size': nativeMin(n, MAX_ARRAY_LENGTH),\n            'type': methodName + (result.__dir__ < 0 ? 'Right' : '')\n          });\n        }\n        return result;\n      };\n\n      LazyWrapper.prototype[methodName + 'Right'] = function(n) {\n        return this.reverse()[methodName](n).reverse();\n      };\n    });\n\n    // Add `LazyWrapper` methods that accept an `iteratee` value.\n    arrayEach(['filter', 'map', 'takeWhile'], function(methodName, index) {\n      var type = index + 1,\n          isFilter = type == LAZY_FILTER_FLAG || type == LAZY_WHILE_FLAG;\n\n      LazyWrapper.prototype[methodName] = function(iteratee) {\n        var result = this.clone();\n        result.__iteratees__.push({\n          'iteratee': getIteratee(iteratee, 3),\n          'type': type\n        });\n        result.__filtered__ = result.__filtered__ || isFilter;\n        return result;\n      };\n    });\n\n    // Add `LazyWrapper` methods for `_.head` and `_.last`.\n    arrayEach(['head', 'last'], function(methodName, index) {\n      var takeName = 'take' + (index ? 'Right' : '');\n\n      LazyWrapper.prototype[methodName] = function() {\n        return this[takeName](1).value()[0];\n      };\n    });\n\n    // Add `LazyWrapper` methods for `_.initial` and `_.tail`.\n    arrayEach(['initial', 'tail'], function(methodName, index) {\n      var dropName = 'drop' + (index ? '' : 'Right');\n\n      LazyWrapper.prototype[methodName] = function() {\n        return this.__filtered__ ? new LazyWrapper(this) : this[dropName](1);\n      };\n    });\n\n    LazyWrapper.prototype.compact = function() {\n      return this.filter(identity);\n    };\n\n    LazyWrapper.prototype.find = function(predicate) {\n      return this.filter(predicate).head();\n    };\n\n    LazyWrapper.prototype.findLast = function(predicate) {\n      return this.reverse().find(predicate);\n    };\n\n    LazyWrapper.prototype.invokeMap = baseRest(function(path, args) {\n      if (typeof path == 'function') {\n        return new LazyWrapper(this);\n      }\n      return this.map(function(value) {\n        return baseInvoke(value, path, args);\n      });\n    });\n\n    LazyWrapper.prototype.reject = function(predicate) {\n      return this.filter(negate(getIteratee(predicate)));\n    };\n\n    LazyWrapper.prototype.slice = function(start, end) {\n      start = toInteger(start);\n\n      var result = this;\n      if (result.__filtered__ && (start > 0 || end < 0)) {\n        return new LazyWrapper(result);\n      }\n      if (start < 0) {\n        result = result.takeRight(-start);\n      } else if (start) {\n        result = result.drop(start);\n      }\n      if (end !== undefined) {\n        end = toInteger(end);\n        result = end < 0 ? result.dropRight(-end) : result.take(end - start);\n      }\n      return result;\n    };\n\n    LazyWrapper.prototype.takeRightWhile = function(predicate) {\n      return this.reverse().takeWhile(predicate).reverse();\n    };\n\n    LazyWrapper.prototype.toArray = function() {\n      return this.take(MAX_ARRAY_LENGTH);\n    };\n\n    // Add `LazyWrapper` methods to `lodash.prototype`.\n    baseForOwn(LazyWrapper.prototype, function(func, methodName) {\n      var checkIteratee = /^(?:filter|find|map|reject)|While$/.test(methodName),\n          isTaker = /^(?:head|last)$/.test(methodName),\n          lodashFunc = lodash[isTaker ? ('take' + (methodName == 'last' ? 'Right' : '')) : methodName],\n          retUnwrapped = isTaker || /^find/.test(methodName);\n\n      if (!lodashFunc) {\n        return;\n      }\n      lodash.prototype[methodName] = function() {\n        var value = this.__wrapped__,\n            args = isTaker ? [1] : arguments,\n            isLazy = value instanceof LazyWrapper,\n            iteratee = args[0],\n            useLazy = isLazy || isArray(value);\n\n        var interceptor = function(value) {\n          var result = lodashFunc.apply(lodash, arrayPush([value], args));\n          return (isTaker && chainAll) ? result[0] : result;\n        };\n\n        if (useLazy && checkIteratee && typeof iteratee == 'function' && iteratee.length != 1) {\n          // Avoid lazy use if the iteratee has a \"length\" value other than `1`.\n          isLazy = useLazy = false;\n        }\n        var chainAll = this.__chain__,\n            isHybrid = !!this.__actions__.length,\n            isUnwrapped = retUnwrapped && !chainAll,\n            onlyLazy = isLazy && !isHybrid;\n\n        if (!retUnwrapped && useLazy) {\n          value = onlyLazy ? value : new LazyWrapper(this);\n          var result = func.apply(value, args);\n          result.__actions__.push({ 'func': thru, 'args': [interceptor], 'thisArg': undefined });\n          return new LodashWrapper(result, chainAll);\n        }\n        if (isUnwrapped && onlyLazy) {\n          return func.apply(this, args);\n        }\n        result = this.thru(interceptor);\n        return isUnwrapped ? (isTaker ? result.value()[0] : result.value()) : result;\n      };\n    });\n\n    // Add `Array` methods to `lodash.prototype`.\n    arrayEach(['pop', 'push', 'shift', 'sort', 'splice', 'unshift'], function(methodName) {\n      var func = arrayProto[methodName],\n          chainName = /^(?:push|sort|unshift)$/.test(methodName) ? 'tap' : 'thru',\n          retUnwrapped = /^(?:pop|shift)$/.test(methodName);\n\n      lodash.prototype[methodName] = function() {\n        var args = arguments;\n        if (retUnwrapped && !this.__chain__) {\n          var value = this.value();\n          return func.apply(isArray(value) ? value : [], args);\n        }\n        return this[chainName](function(value) {\n          return func.apply(isArray(value) ? value : [], args);\n        });\n      };\n    });\n\n    // Map minified method names to their real names.\n    baseForOwn(LazyWrapper.prototype, function(func, methodName) {\n      var lodashFunc = lodash[methodName];\n      if (lodashFunc) {\n        var key = lodashFunc.name + '';\n        if (!hasOwnProperty.call(realNames, key)) {\n          realNames[key] = [];\n        }\n        realNames[key].push({ 'name': methodName, 'func': lodashFunc });\n      }\n    });\n\n    realNames[createHybrid(undefined, WRAP_BIND_KEY_FLAG).name] = [{\n      'name': 'wrapper',\n      'func': undefined\n    }];\n\n    // Add methods to `LazyWrapper`.\n    LazyWrapper.prototype.clone = lazyClone;\n    LazyWrapper.prototype.reverse = lazyReverse;\n    LazyWrapper.prototype.value = lazyValue;\n\n    // Add chain sequence methods to the `lodash` wrapper.\n    lodash.prototype.at = wrapperAt;\n    lodash.prototype.chain = wrapperChain;\n    lodash.prototype.commit = wrapperCommit;\n    lodash.prototype.next = wrapperNext;\n    lodash.prototype.plant = wrapperPlant;\n    lodash.prototype.reverse = wrapperReverse;\n    lodash.prototype.toJSON = lodash.prototype.valueOf = lodash.prototype.value = wrapperValue;\n\n    // Add lazy aliases.\n    lodash.prototype.first = lodash.prototype.head;\n\n    if (symIterator) {\n      lodash.prototype[symIterator] = wrapperToIterator;\n    }\n    return lodash;\n  });\n\n  /*--------------------------------------------------------------------------*/\n\n  // Export lodash.\n  var _ = runInContext();\n\n  // Some AMD build optimizers, like r.js, check for condition patterns like:\n  if (typeof define == 'function' && typeof define.amd == 'object' && define.amd) {\n    // Expose Lodash on the global object to prevent errors when Lodash is\n    // loaded by a script tag in the presence of an AMD loader.\n    // See http://requirejs.org/docs/errors.html#mismatch for more details.\n    // Use `_.noConflict` to remove Lodash from the global object.\n    root._ = _;\n\n    // Define as an anonymous module so, through path mapping, it can be\n    // referenced as the \"underscore\" module.\n    define(function() {\n      return _;\n    });\n  }\n  // Check for `exports` after `define` in case a build optimizer adds it.\n  else if (freeModule) {\n    // Export for Node.js.\n    (freeModule.exports = _)._ = _;\n    // Export for CommonJS support.\n    freeExports._ = _;\n  }\n  else {\n    // Export to the global object.\n    root._ = _;\n  }\n}.call(this));\n","'use strict';\n\nObject.defineProperty(exports, '__esModule', { value: true });\n\nfunction _interopDefault (ex) { return (ex && (typeof ex === 'object') && 'default' in ex) ? ex['default'] : ex; }\n\nvar Stream = _interopDefault(require('stream'));\nvar http = _interopDefault(require('http'));\nvar Url = _interopDefault(require('url'));\nvar whatwgUrl = _interopDefault(require('whatwg-url'));\nvar https = _interopDefault(require('https'));\nvar zlib = _interopDefault(require('zlib'));\n\n// Based on https://github.com/tmpvar/jsdom/blob/aa85b2abf07766ff7bf5c1f6daafb3726f2f2db5/lib/jsdom/living/blob.js\n\n// fix for \"Readable\" isn't a named export issue\nconst Readable = Stream.Readable;\n\nconst BUFFER = Symbol('buffer');\nconst TYPE = Symbol('type');\n\nclass Blob {\n\tconstructor() {\n\t\tthis[TYPE] = '';\n\n\t\tconst blobParts = arguments[0];\n\t\tconst options = arguments[1];\n\n\t\tconst buffers = [];\n\t\tlet size = 0;\n\n\t\tif (blobParts) {\n\t\t\tconst a = blobParts;\n\t\t\tconst length = Number(a.length);\n\t\t\tfor (let i = 0; i < length; i++) {\n\t\t\t\tconst element = a[i];\n\t\t\t\tlet buffer;\n\t\t\t\tif (element instanceof Buffer) {\n\t\t\t\t\tbuffer = element;\n\t\t\t\t} else if (ArrayBuffer.isView(element)) {\n\t\t\t\t\tbuffer = Buffer.from(element.buffer, element.byteOffset, element.byteLength);\n\t\t\t\t} else if (element instanceof ArrayBuffer) {\n\t\t\t\t\tbuffer = Buffer.from(element);\n\t\t\t\t} else if (element instanceof Blob) {\n\t\t\t\t\tbuffer = element[BUFFER];\n\t\t\t\t} else {\n\t\t\t\t\tbuffer = Buffer.from(typeof element === 'string' ? element : String(element));\n\t\t\t\t}\n\t\t\t\tsize += buffer.length;\n\t\t\t\tbuffers.push(buffer);\n\t\t\t}\n\t\t}\n\n\t\tthis[BUFFER] = Buffer.concat(buffers);\n\n\t\tlet type = options && options.type !== undefined && String(options.type).toLowerCase();\n\t\tif (type && !/[^\\u0020-\\u007E]/.test(type)) {\n\t\t\tthis[TYPE] = type;\n\t\t}\n\t}\n\tget size() {\n\t\treturn this[BUFFER].length;\n\t}\n\tget type() {\n\t\treturn this[TYPE];\n\t}\n\ttext() {\n\t\treturn Promise.resolve(this[BUFFER].toString());\n\t}\n\tarrayBuffer() {\n\t\tconst buf = this[BUFFER];\n\t\tconst ab = buf.buffer.slice(buf.byteOffset, buf.byteOffset + buf.byteLength);\n\t\treturn Promise.resolve(ab);\n\t}\n\tstream() {\n\t\tconst readable = new Readable();\n\t\treadable._read = function () {};\n\t\treadable.push(this[BUFFER]);\n\t\treadable.push(null);\n\t\treturn readable;\n\t}\n\ttoString() {\n\t\treturn '[object Blob]';\n\t}\n\tslice() {\n\t\tconst size = this.size;\n\n\t\tconst start = arguments[0];\n\t\tconst end = arguments[1];\n\t\tlet relativeStart, relativeEnd;\n\t\tif (start === undefined) {\n\t\t\trelativeStart = 0;\n\t\t} else if (start < 0) {\n\t\t\trelativeStart = Math.max(size + start, 0);\n\t\t} else {\n\t\t\trelativeStart = Math.min(start, size);\n\t\t}\n\t\tif (end === undefined) {\n\t\t\trelativeEnd = size;\n\t\t} else if (end < 0) {\n\t\t\trelativeEnd = Math.max(size + end, 0);\n\t\t} else {\n\t\t\trelativeEnd = Math.min(end, size);\n\t\t}\n\t\tconst span = Math.max(relativeEnd - relativeStart, 0);\n\n\t\tconst buffer = this[BUFFER];\n\t\tconst slicedBuffer = buffer.slice(relativeStart, relativeStart + span);\n\t\tconst blob = new Blob([], { type: arguments[2] });\n\t\tblob[BUFFER] = slicedBuffer;\n\t\treturn blob;\n\t}\n}\n\nObject.defineProperties(Blob.prototype, {\n\tsize: { enumerable: true },\n\ttype: { enumerable: true },\n\tslice: { enumerable: true }\n});\n\nObject.defineProperty(Blob.prototype, Symbol.toStringTag, {\n\tvalue: 'Blob',\n\twritable: false,\n\tenumerable: false,\n\tconfigurable: true\n});\n\n/**\n * fetch-error.js\n *\n * FetchError interface for operational errors\n */\n\n/**\n * Create FetchError instance\n *\n * @param   String      message      Error message for human\n * @param   String      type         Error type for machine\n * @param   String      systemError  For Node.js system error\n * @return  FetchError\n */\nfunction FetchError(message, type, systemError) {\n  Error.call(this, message);\n\n  this.message = message;\n  this.type = type;\n\n  // when err.type is `system`, err.code contains system error code\n  if (systemError) {\n    this.code = this.errno = systemError.code;\n  }\n\n  // hide custom error implementation details from end-users\n  Error.captureStackTrace(this, this.constructor);\n}\n\nFetchError.prototype = Object.create(Error.prototype);\nFetchError.prototype.constructor = FetchError;\nFetchError.prototype.name = 'FetchError';\n\nlet convert;\ntry {\n\tconvert = require('encoding').convert;\n} catch (e) {}\n\nconst INTERNALS = Symbol('Body internals');\n\n// fix an issue where \"PassThrough\" isn't a named export for node <10\nconst PassThrough = Stream.PassThrough;\n\n/**\n * Body mixin\n *\n * Ref: https://fetch.spec.whatwg.org/#body\n *\n * @param   Stream  body  Readable stream\n * @param   Object  opts  Response options\n * @return  Void\n */\nfunction Body(body) {\n\tvar _this = this;\n\n\tvar _ref = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {},\n\t    _ref$size = _ref.size;\n\n\tlet size = _ref$size === undefined ? 0 : _ref$size;\n\tvar _ref$timeout = _ref.timeout;\n\tlet timeout = _ref$timeout === undefined ? 0 : _ref$timeout;\n\n\tif (body == null) {\n\t\t// body is undefined or null\n\t\tbody = null;\n\t} else if (isURLSearchParams(body)) {\n\t\t// body is a URLSearchParams\n\t\tbody = Buffer.from(body.toString());\n\t} else if (isBlob(body)) ; else if (Buffer.isBuffer(body)) ; else if (Object.prototype.toString.call(body) === '[object ArrayBuffer]') {\n\t\t// body is ArrayBuffer\n\t\tbody = Buffer.from(body);\n\t} else if (ArrayBuffer.isView(body)) {\n\t\t// body is ArrayBufferView\n\t\tbody = Buffer.from(body.buffer, body.byteOffset, body.byteLength);\n\t} else if (body instanceof Stream) ; else {\n\t\t// none of the above\n\t\t// coerce to string then buffer\n\t\tbody = Buffer.from(String(body));\n\t}\n\tthis[INTERNALS] = {\n\t\tbody,\n\t\tdisturbed: false,\n\t\terror: null\n\t};\n\tthis.size = size;\n\tthis.timeout = timeout;\n\n\tif (body instanceof Stream) {\n\t\tbody.on('error', function (err) {\n\t\t\tconst error = err.name === 'AbortError' ? err : new FetchError(`Invalid response body while trying to fetch ${_this.url}: ${err.message}`, 'system', err);\n\t\t\t_this[INTERNALS].error = error;\n\t\t});\n\t}\n}\n\nBody.prototype = {\n\tget body() {\n\t\treturn this[INTERNALS].body;\n\t},\n\n\tget bodyUsed() {\n\t\treturn this[INTERNALS].disturbed;\n\t},\n\n\t/**\n  * Decode response as ArrayBuffer\n  *\n  * @return  Promise\n  */\n\tarrayBuffer() {\n\t\treturn consumeBody.call(this).then(function (buf) {\n\t\t\treturn buf.buffer.slice(buf.byteOffset, buf.byteOffset + buf.byteLength);\n\t\t});\n\t},\n\n\t/**\n  * Return raw response as Blob\n  *\n  * @return Promise\n  */\n\tblob() {\n\t\tlet ct = this.headers && this.headers.get('content-type') || '';\n\t\treturn consumeBody.call(this).then(function (buf) {\n\t\t\treturn Object.assign(\n\t\t\t// Prevent copying\n\t\t\tnew Blob([], {\n\t\t\t\ttype: ct.toLowerCase()\n\t\t\t}), {\n\t\t\t\t[BUFFER]: buf\n\t\t\t});\n\t\t});\n\t},\n\n\t/**\n  * Decode response as json\n  *\n  * @return  Promise\n  */\n\tjson() {\n\t\tvar _this2 = this;\n\n\t\treturn consumeBody.call(this).then(function (buffer) {\n\t\t\ttry {\n\t\t\t\treturn JSON.parse(buffer.toString());\n\t\t\t} catch (err) {\n\t\t\t\treturn Body.Promise.reject(new FetchError(`invalid json response body at ${_this2.url} reason: ${err.message}`, 'invalid-json'));\n\t\t\t}\n\t\t});\n\t},\n\n\t/**\n  * Decode response as text\n  *\n  * @return  Promise\n  */\n\ttext() {\n\t\treturn consumeBody.call(this).then(function (buffer) {\n\t\t\treturn buffer.toString();\n\t\t});\n\t},\n\n\t/**\n  * Decode response as buffer (non-spec api)\n  *\n  * @return  Promise\n  */\n\tbuffer() {\n\t\treturn consumeBody.call(this);\n\t},\n\n\t/**\n  * Decode response as text, while automatically detecting the encoding and\n  * trying to decode to UTF-8 (non-spec api)\n  *\n  * @return  Promise\n  */\n\ttextConverted() {\n\t\tvar _this3 = this;\n\n\t\treturn consumeBody.call(this).then(function (buffer) {\n\t\t\treturn convertBody(buffer, _this3.headers);\n\t\t});\n\t}\n};\n\n// In browsers, all properties are enumerable.\nObject.defineProperties(Body.prototype, {\n\tbody: { enumerable: true },\n\tbodyUsed: { enumerable: true },\n\tarrayBuffer: { enumerable: true },\n\tblob: { enumerable: true },\n\tjson: { enumerable: true },\n\ttext: { enumerable: true }\n});\n\nBody.mixIn = function (proto) {\n\tfor (const name of Object.getOwnPropertyNames(Body.prototype)) {\n\t\t// istanbul ignore else: future proof\n\t\tif (!(name in proto)) {\n\t\t\tconst desc = Object.getOwnPropertyDescriptor(Body.prototype, name);\n\t\t\tObject.defineProperty(proto, name, desc);\n\t\t}\n\t}\n};\n\n/**\n * Consume and convert an entire Body to a Buffer.\n *\n * Ref: https://fetch.spec.whatwg.org/#concept-body-consume-body\n *\n * @return  Promise\n */\nfunction consumeBody() {\n\tvar _this4 = this;\n\n\tif (this[INTERNALS].disturbed) {\n\t\treturn Body.Promise.reject(new TypeError(`body used already for: ${this.url}`));\n\t}\n\n\tthis[INTERNALS].disturbed = true;\n\n\tif (this[INTERNALS].error) {\n\t\treturn Body.Promise.reject(this[INTERNALS].error);\n\t}\n\n\tlet body = this.body;\n\n\t// body is null\n\tif (body === null) {\n\t\treturn Body.Promise.resolve(Buffer.alloc(0));\n\t}\n\n\t// body is blob\n\tif (isBlob(body)) {\n\t\tbody = body.stream();\n\t}\n\n\t// body is buffer\n\tif (Buffer.isBuffer(body)) {\n\t\treturn Body.Promise.resolve(body);\n\t}\n\n\t// istanbul ignore if: should never happen\n\tif (!(body instanceof Stream)) {\n\t\treturn Body.Promise.resolve(Buffer.alloc(0));\n\t}\n\n\t// body is stream\n\t// get ready to actually consume the body\n\tlet accum = [];\n\tlet accumBytes = 0;\n\tlet abort = false;\n\n\treturn new Body.Promise(function (resolve, reject) {\n\t\tlet resTimeout;\n\n\t\t// allow timeout on slow response body\n\t\tif (_this4.timeout) {\n\t\t\tresTimeout = setTimeout(function () {\n\t\t\t\tabort = true;\n\t\t\t\treject(new FetchError(`Response timeout while trying to fetch ${_this4.url} (over ${_this4.timeout}ms)`, 'body-timeout'));\n\t\t\t}, _this4.timeout);\n\t\t}\n\n\t\t// handle stream errors\n\t\tbody.on('error', function (err) {\n\t\t\tif (err.name === 'AbortError') {\n\t\t\t\t// if the request was aborted, reject with this Error\n\t\t\t\tabort = true;\n\t\t\t\treject(err);\n\t\t\t} else {\n\t\t\t\t// other errors, such as incorrect content-encoding\n\t\t\t\treject(new FetchError(`Invalid response body while trying to fetch ${_this4.url}: ${err.message}`, 'system', err));\n\t\t\t}\n\t\t});\n\n\t\tbody.on('data', function (chunk) {\n\t\t\tif (abort || chunk === null) {\n\t\t\t\treturn;\n\t\t\t}\n\n\t\t\tif (_this4.size && accumBytes + chunk.length > _this4.size) {\n\t\t\t\tabort = true;\n\t\t\t\treject(new FetchError(`content size at ${_this4.url} over limit: ${_this4.size}`, 'max-size'));\n\t\t\t\treturn;\n\t\t\t}\n\n\t\t\taccumBytes += chunk.length;\n\t\t\taccum.push(chunk);\n\t\t});\n\n\t\tbody.on('end', function () {\n\t\t\tif (abort) {\n\t\t\t\treturn;\n\t\t\t}\n\n\t\t\tclearTimeout(resTimeout);\n\n\t\t\ttry {\n\t\t\t\tresolve(Buffer.concat(accum, accumBytes));\n\t\t\t} catch (err) {\n\t\t\t\t// handle streams that have accumulated too much data (issue #414)\n\t\t\t\treject(new FetchError(`Could not create Buffer from response body for ${_this4.url}: ${err.message}`, 'system', err));\n\t\t\t}\n\t\t});\n\t});\n}\n\n/**\n * Detect buffer encoding and convert to target encoding\n * ref: http://www.w3.org/TR/2011/WD-html5-20110113/parsing.html#determining-the-character-encoding\n *\n * @param   Buffer  buffer    Incoming buffer\n * @param   String  encoding  Target encoding\n * @return  String\n */\nfunction convertBody(buffer, headers) {\n\tif (typeof convert !== 'function') {\n\t\tthrow new Error('The package `encoding` must be installed to use the textConverted() function');\n\t}\n\n\tconst ct = headers.get('content-type');\n\tlet charset = 'utf-8';\n\tlet res, str;\n\n\t// header\n\tif (ct) {\n\t\tres = /charset=([^;]*)/i.exec(ct);\n\t}\n\n\t// no charset in content type, peek at response body for at most 1024 bytes\n\tstr = buffer.slice(0, 1024).toString();\n\n\t// html5\n\tif (!res && str) {\n\t\tres = /<meta.+?charset=(['\"])(.+?)\\1/i.exec(str);\n\t}\n\n\t// html4\n\tif (!res && str) {\n\t\tres = /<meta[\\s]+?http-equiv=(['\"])content-type\\1[\\s]+?content=(['\"])(.+?)\\2/i.exec(str);\n\t\tif (!res) {\n\t\t\tres = /<meta[\\s]+?content=(['\"])(.+?)\\1[\\s]+?http-equiv=(['\"])content-type\\3/i.exec(str);\n\t\t\tif (res) {\n\t\t\t\tres.pop(); // drop last quote\n\t\t\t}\n\t\t}\n\n\t\tif (res) {\n\t\t\tres = /charset=(.*)/i.exec(res.pop());\n\t\t}\n\t}\n\n\t// xml\n\tif (!res && str) {\n\t\tres = /<\\?xml.+?encoding=(['\"])(.+?)\\1/i.exec(str);\n\t}\n\n\t// found charset\n\tif (res) {\n\t\tcharset = res.pop();\n\n\t\t// prevent decode issues when sites use incorrect encoding\n\t\t// ref: https://hsivonen.fi/encoding-menu/\n\t\tif (charset === 'gb2312' || charset === 'gbk') {\n\t\t\tcharset = 'gb18030';\n\t\t}\n\t}\n\n\t// turn raw buffers into a single utf-8 buffer\n\treturn convert(buffer, 'UTF-8', charset).toString();\n}\n\n/**\n * Detect a URLSearchParams object\n * ref: https://github.com/bitinn/node-fetch/issues/296#issuecomment-307598143\n *\n * @param   Object  obj     Object to detect by type or brand\n * @return  String\n */\nfunction isURLSearchParams(obj) {\n\t// Duck-typing as a necessary condition.\n\tif (typeof obj !== 'object' || typeof obj.append !== 'function' || typeof obj.delete !== 'function' || typeof obj.get !== 'function' || typeof obj.getAll !== 'function' || typeof obj.has !== 'function' || typeof obj.set !== 'function') {\n\t\treturn false;\n\t}\n\n\t// Brand-checking and more duck-typing as optional condition.\n\treturn obj.constructor.name === 'URLSearchParams' || Object.prototype.toString.call(obj) === '[object URLSearchParams]' || typeof obj.sort === 'function';\n}\n\n/**\n * Check if `obj` is a W3C `Blob` object (which `File` inherits from)\n * @param  {*} obj\n * @return {boolean}\n */\nfunction isBlob(obj) {\n\treturn typeof obj === 'object' && typeof obj.arrayBuffer === 'function' && typeof obj.type === 'string' && typeof obj.stream === 'function' && typeof obj.constructor === 'function' && typeof obj.constructor.name === 'string' && /^(Blob|File)$/.test(obj.constructor.name) && /^(Blob|File)$/.test(obj[Symbol.toStringTag]);\n}\n\n/**\n * Clone body given Res/Req instance\n *\n * @param   Mixed  instance  Response or Request instance\n * @return  Mixed\n */\nfunction clone(instance) {\n\tlet p1, p2;\n\tlet body = instance.body;\n\n\t// don't allow cloning a used body\n\tif (instance.bodyUsed) {\n\t\tthrow new Error('cannot clone body after it is used');\n\t}\n\n\t// check that body is a stream and not form-data object\n\t// note: we can't clone the form-data object without having it as a dependency\n\tif (body instanceof Stream && typeof body.getBoundary !== 'function') {\n\t\t// tee instance body\n\t\tp1 = new PassThrough();\n\t\tp2 = new PassThrough();\n\t\tbody.pipe(p1);\n\t\tbody.pipe(p2);\n\t\t// set instance body to teed body and return the other teed body\n\t\tinstance[INTERNALS].body = p1;\n\t\tbody = p2;\n\t}\n\n\treturn body;\n}\n\n/**\n * Performs the operation \"extract a `Content-Type` value from |object|\" as\n * specified in the specification:\n * https://fetch.spec.whatwg.org/#concept-bodyinit-extract\n *\n * This function assumes that instance.body is present.\n *\n * @param   Mixed  instance  Any options.body input\n */\nfunction extractContentType(body) {\n\tif (body === null) {\n\t\t// body is null\n\t\treturn null;\n\t} else if (typeof body === 'string') {\n\t\t// body is string\n\t\treturn 'text/plain;charset=UTF-8';\n\t} else if (isURLSearchParams(body)) {\n\t\t// body is a URLSearchParams\n\t\treturn 'application/x-www-form-urlencoded;charset=UTF-8';\n\t} else if (isBlob(body)) {\n\t\t// body is blob\n\t\treturn body.type || null;\n\t} else if (Buffer.isBuffer(body)) {\n\t\t// body is buffer\n\t\treturn null;\n\t} else if (Object.prototype.toString.call(body) === '[object ArrayBuffer]') {\n\t\t// body is ArrayBuffer\n\t\treturn null;\n\t} else if (ArrayBuffer.isView(body)) {\n\t\t// body is ArrayBufferView\n\t\treturn null;\n\t} else if (typeof body.getBoundary === 'function') {\n\t\t// detect form data input from form-data module\n\t\treturn `multipart/form-data;boundary=${body.getBoundary()}`;\n\t} else if (body instanceof Stream) {\n\t\t// body is stream\n\t\t// can't really do much about this\n\t\treturn null;\n\t} else {\n\t\t// Body constructor defaults other things to string\n\t\treturn 'text/plain;charset=UTF-8';\n\t}\n}\n\n/**\n * The Fetch Standard treats this as if \"total bytes\" is a property on the body.\n * For us, we have to explicitly get it with a function.\n *\n * ref: https://fetch.spec.whatwg.org/#concept-body-total-bytes\n *\n * @param   Body    instance   Instance of Body\n * @return  Number?            Number of bytes, or null if not possible\n */\nfunction getTotalBytes(instance) {\n\tconst body = instance.body;\n\n\n\tif (body === null) {\n\t\t// body is null\n\t\treturn 0;\n\t} else if (isBlob(body)) {\n\t\treturn body.size;\n\t} else if (Buffer.isBuffer(body)) {\n\t\t// body is buffer\n\t\treturn body.length;\n\t} else if (body && typeof body.getLengthSync === 'function') {\n\t\t// detect form data input from form-data module\n\t\tif (body._lengthRetrievers && body._lengthRetrievers.length == 0 || // 1.x\n\t\tbody.hasKnownLength && body.hasKnownLength()) {\n\t\t\t// 2.x\n\t\t\treturn body.getLengthSync();\n\t\t}\n\t\treturn null;\n\t} else {\n\t\t// body is stream\n\t\treturn null;\n\t}\n}\n\n/**\n * Write a Body to a Node.js WritableStream (e.g. http.Request) object.\n *\n * @param   Body    instance   Instance of Body\n * @return  Void\n */\nfunction writeToStream(dest, instance) {\n\tconst body = instance.body;\n\n\n\tif (body === null) {\n\t\t// body is null\n\t\tdest.end();\n\t} else if (isBlob(body)) {\n\t\tbody.stream().pipe(dest);\n\t} else if (Buffer.isBuffer(body)) {\n\t\t// body is buffer\n\t\tdest.write(body);\n\t\tdest.end();\n\t} else {\n\t\t// body is stream\n\t\tbody.pipe(dest);\n\t}\n}\n\n// expose Promise\nBody.Promise = global.Promise;\n\n/**\n * headers.js\n *\n * Headers class offers convenient helpers\n */\n\nconst invalidTokenRegex = /[^\\^_`a-zA-Z\\-0-9!#$%&'*+.|~]/;\nconst invalidHeaderCharRegex = /[^\\t\\x20-\\x7e\\x80-\\xff]/;\n\nfunction validateName(name) {\n\tname = `${name}`;\n\tif (invalidTokenRegex.test(name) || name === '') {\n\t\tthrow new TypeError(`${name} is not a legal HTTP header name`);\n\t}\n}\n\nfunction validateValue(value) {\n\tvalue = `${value}`;\n\tif (invalidHeaderCharRegex.test(value)) {\n\t\tthrow new TypeError(`${value} is not a legal HTTP header value`);\n\t}\n}\n\n/**\n * Find the key in the map object given a header name.\n *\n * Returns undefined if not found.\n *\n * @param   String  name  Header name\n * @return  String|Undefined\n */\nfunction find(map, name) {\n\tname = name.toLowerCase();\n\tfor (const key in map) {\n\t\tif (key.toLowerCase() === name) {\n\t\t\treturn key;\n\t\t}\n\t}\n\treturn undefined;\n}\n\nconst MAP = Symbol('map');\nclass Headers {\n\t/**\n  * Headers class\n  *\n  * @param   Object  headers  Response headers\n  * @return  Void\n  */\n\tconstructor() {\n\t\tlet init = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : undefined;\n\n\t\tthis[MAP] = Object.create(null);\n\n\t\tif (init instanceof Headers) {\n\t\t\tconst rawHeaders = init.raw();\n\t\t\tconst headerNames = Object.keys(rawHeaders);\n\n\t\t\tfor (const headerName of headerNames) {\n\t\t\t\tfor (const value of rawHeaders[headerName]) {\n\t\t\t\t\tthis.append(headerName, value);\n\t\t\t\t}\n\t\t\t}\n\n\t\t\treturn;\n\t\t}\n\n\t\t// We don't worry about converting prop to ByteString here as append()\n\t\t// will handle it.\n\t\tif (init == null) ; else if (typeof init === 'object') {\n\t\t\tconst method = init[Symbol.iterator];\n\t\t\tif (method != null) {\n\t\t\t\tif (typeof method !== 'function') {\n\t\t\t\t\tthrow new TypeError('Header pairs must be iterable');\n\t\t\t\t}\n\n\t\t\t\t// sequence<sequence<ByteString>>\n\t\t\t\t// Note: per spec we have to first exhaust the lists then process them\n\t\t\t\tconst pairs = [];\n\t\t\t\tfor (const pair of init) {\n\t\t\t\t\tif (typeof pair !== 'object' || typeof pair[Symbol.iterator] !== 'function') {\n\t\t\t\t\t\tthrow new TypeError('Each header pair must be iterable');\n\t\t\t\t\t}\n\t\t\t\t\tpairs.push(Array.from(pair));\n\t\t\t\t}\n\n\t\t\t\tfor (const pair of pairs) {\n\t\t\t\t\tif (pair.length !== 2) {\n\t\t\t\t\t\tthrow new TypeError('Each header pair must be a name/value tuple');\n\t\t\t\t\t}\n\t\t\t\t\tthis.append(pair[0], pair[1]);\n\t\t\t\t}\n\t\t\t} else {\n\t\t\t\t// record<ByteString, ByteString>\n\t\t\t\tfor (const key of Object.keys(init)) {\n\t\t\t\t\tconst value = init[key];\n\t\t\t\t\tthis.append(key, value);\n\t\t\t\t}\n\t\t\t}\n\t\t} else {\n\t\t\tthrow new TypeError('Provided initializer must be an object');\n\t\t}\n\t}\n\n\t/**\n  * Return combined header value given name\n  *\n  * @param   String  name  Header name\n  * @return  Mixed\n  */\n\tget(name) {\n\t\tname = `${name}`;\n\t\tvalidateName(name);\n\t\tconst key = find(this[MAP], name);\n\t\tif (key === undefined) {\n\t\t\treturn null;\n\t\t}\n\n\t\treturn this[MAP][key].join(', ');\n\t}\n\n\t/**\n  * Iterate over all headers\n  *\n  * @param   Function  callback  Executed for each item with parameters (value, name, thisArg)\n  * @param   Boolean   thisArg   `this` context for callback function\n  * @return  Void\n  */\n\tforEach(callback) {\n\t\tlet thisArg = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : undefined;\n\n\t\tlet pairs = getHeaders(this);\n\t\tlet i = 0;\n\t\twhile (i < pairs.length) {\n\t\t\tvar _pairs$i = pairs[i];\n\t\t\tconst name = _pairs$i[0],\n\t\t\t      value = _pairs$i[1];\n\n\t\t\tcallback.call(thisArg, value, name, this);\n\t\t\tpairs = getHeaders(this);\n\t\t\ti++;\n\t\t}\n\t}\n\n\t/**\n  * Overwrite header values given name\n  *\n  * @param   String  name   Header name\n  * @param   String  value  Header value\n  * @return  Void\n  */\n\tset(name, value) {\n\t\tname = `${name}`;\n\t\tvalue = `${value}`;\n\t\tvalidateName(name);\n\t\tvalidateValue(value);\n\t\tconst key = find(this[MAP], name);\n\t\tthis[MAP][key !== undefined ? key : name] = [value];\n\t}\n\n\t/**\n  * Append a value onto existing header\n  *\n  * @param   String  name   Header name\n  * @param   String  value  Header value\n  * @return  Void\n  */\n\tappend(name, value) {\n\t\tname = `${name}`;\n\t\tvalue = `${value}`;\n\t\tvalidateName(name);\n\t\tvalidateValue(value);\n\t\tconst key = find(this[MAP], name);\n\t\tif (key !== undefined) {\n\t\t\tthis[MAP][key].push(value);\n\t\t} else {\n\t\t\tthis[MAP][name] = [value];\n\t\t}\n\t}\n\n\t/**\n  * Check for header name existence\n  *\n  * @param   String   name  Header name\n  * @return  Boolean\n  */\n\thas(name) {\n\t\tname = `${name}`;\n\t\tvalidateName(name);\n\t\treturn find(this[MAP], name) !== undefined;\n\t}\n\n\t/**\n  * Delete all header values given name\n  *\n  * @param   String  name  Header name\n  * @return  Void\n  */\n\tdelete(name) {\n\t\tname = `${name}`;\n\t\tvalidateName(name);\n\t\tconst key = find(this[MAP], name);\n\t\tif (key !== undefined) {\n\t\t\tdelete this[MAP][key];\n\t\t}\n\t}\n\n\t/**\n  * Return raw headers (non-spec api)\n  *\n  * @return  Object\n  */\n\traw() {\n\t\treturn this[MAP];\n\t}\n\n\t/**\n  * Get an iterator on keys.\n  *\n  * @return  Iterator\n  */\n\tkeys() {\n\t\treturn createHeadersIterator(this, 'key');\n\t}\n\n\t/**\n  * Get an iterator on values.\n  *\n  * @return  Iterator\n  */\n\tvalues() {\n\t\treturn createHeadersIterator(this, 'value');\n\t}\n\n\t/**\n  * Get an iterator on entries.\n  *\n  * This is the default iterator of the Headers object.\n  *\n  * @return  Iterator\n  */\n\t[Symbol.iterator]() {\n\t\treturn createHeadersIterator(this, 'key+value');\n\t}\n}\nHeaders.prototype.entries = Headers.prototype[Symbol.iterator];\n\nObject.defineProperty(Headers.prototype, Symbol.toStringTag, {\n\tvalue: 'Headers',\n\twritable: false,\n\tenumerable: false,\n\tconfigurable: true\n});\n\nObject.defineProperties(Headers.prototype, {\n\tget: { enumerable: true },\n\tforEach: { enumerable: true },\n\tset: { enumerable: true },\n\tappend: { enumerable: true },\n\thas: { enumerable: true },\n\tdelete: { enumerable: true },\n\tkeys: { enumerable: true },\n\tvalues: { enumerable: true },\n\tentries: { enumerable: true }\n});\n\nfunction getHeaders(headers) {\n\tlet kind = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : 'key+value';\n\n\tconst keys = Object.keys(headers[MAP]).sort();\n\treturn keys.map(kind === 'key' ? function (k) {\n\t\treturn k.toLowerCase();\n\t} : kind === 'value' ? function (k) {\n\t\treturn headers[MAP][k].join(', ');\n\t} : function (k) {\n\t\treturn [k.toLowerCase(), headers[MAP][k].join(', ')];\n\t});\n}\n\nconst INTERNAL = Symbol('internal');\n\nfunction createHeadersIterator(target, kind) {\n\tconst iterator = Object.create(HeadersIteratorPrototype);\n\titerator[INTERNAL] = {\n\t\ttarget,\n\t\tkind,\n\t\tindex: 0\n\t};\n\treturn iterator;\n}\n\nconst HeadersIteratorPrototype = Object.setPrototypeOf({\n\tnext() {\n\t\t// istanbul ignore if\n\t\tif (!this || Object.getPrototypeOf(this) !== HeadersIteratorPrototype) {\n\t\t\tthrow new TypeError('Value of `this` is not a HeadersIterator');\n\t\t}\n\n\t\tvar _INTERNAL = this[INTERNAL];\n\t\tconst target = _INTERNAL.target,\n\t\t      kind = _INTERNAL.kind,\n\t\t      index = _INTERNAL.index;\n\n\t\tconst values = getHeaders(target, kind);\n\t\tconst len = values.length;\n\t\tif (index >= len) {\n\t\t\treturn {\n\t\t\t\tvalue: undefined,\n\t\t\t\tdone: true\n\t\t\t};\n\t\t}\n\n\t\tthis[INTERNAL].index = index + 1;\n\n\t\treturn {\n\t\t\tvalue: values[index],\n\t\t\tdone: false\n\t\t};\n\t}\n}, Object.getPrototypeOf(Object.getPrototypeOf([][Symbol.iterator]())));\n\nObject.defineProperty(HeadersIteratorPrototype, Symbol.toStringTag, {\n\tvalue: 'HeadersIterator',\n\twritable: false,\n\tenumerable: false,\n\tconfigurable: true\n});\n\n/**\n * Export the Headers object in a form that Node.js can consume.\n *\n * @param   Headers  headers\n * @return  Object\n */\nfunction exportNodeCompatibleHeaders(headers) {\n\tconst obj = Object.assign({ __proto__: null }, headers[MAP]);\n\n\t// http.request() only supports string as Host header. This hack makes\n\t// specifying custom Host header possible.\n\tconst hostHeaderKey = find(headers[MAP], 'Host');\n\tif (hostHeaderKey !== undefined) {\n\t\tobj[hostHeaderKey] = obj[hostHeaderKey][0];\n\t}\n\n\treturn obj;\n}\n\n/**\n * Create a Headers object from an object of headers, ignoring those that do\n * not conform to HTTP grammar productions.\n *\n * @param   Object  obj  Object of headers\n * @return  Headers\n */\nfunction createHeadersLenient(obj) {\n\tconst headers = new Headers();\n\tfor (const name of Object.keys(obj)) {\n\t\tif (invalidTokenRegex.test(name)) {\n\t\t\tcontinue;\n\t\t}\n\t\tif (Array.isArray(obj[name])) {\n\t\t\tfor (const val of obj[name]) {\n\t\t\t\tif (invalidHeaderCharRegex.test(val)) {\n\t\t\t\t\tcontinue;\n\t\t\t\t}\n\t\t\t\tif (headers[MAP][name] === undefined) {\n\t\t\t\t\theaders[MAP][name] = [val];\n\t\t\t\t} else {\n\t\t\t\t\theaders[MAP][name].push(val);\n\t\t\t\t}\n\t\t\t}\n\t\t} else if (!invalidHeaderCharRegex.test(obj[name])) {\n\t\t\theaders[MAP][name] = [obj[name]];\n\t\t}\n\t}\n\treturn headers;\n}\n\nconst INTERNALS$1 = Symbol('Response internals');\n\n// fix an issue where \"STATUS_CODES\" aren't a named export for node <10\nconst STATUS_CODES = http.STATUS_CODES;\n\n/**\n * Response class\n *\n * @param   Stream  body  Readable stream\n * @param   Object  opts  Response options\n * @return  Void\n */\nclass Response {\n\tconstructor() {\n\t\tlet body = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : null;\n\t\tlet opts = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {};\n\n\t\tBody.call(this, body, opts);\n\n\t\tconst status = opts.status || 200;\n\t\tconst headers = new Headers(opts.headers);\n\n\t\tif (body != null && !headers.has('Content-Type')) {\n\t\t\tconst contentType = extractContentType(body);\n\t\t\tif (contentType) {\n\t\t\t\theaders.append('Content-Type', contentType);\n\t\t\t}\n\t\t}\n\n\t\tthis[INTERNALS$1] = {\n\t\t\turl: opts.url,\n\t\t\tstatus,\n\t\t\tstatusText: opts.statusText || STATUS_CODES[status],\n\t\t\theaders,\n\t\t\tcounter: opts.counter\n\t\t};\n\t}\n\n\tget url() {\n\t\treturn this[INTERNALS$1].url || '';\n\t}\n\n\tget status() {\n\t\treturn this[INTERNALS$1].status;\n\t}\n\n\t/**\n  * Convenience property representing if the request ended normally\n  */\n\tget ok() {\n\t\treturn this[INTERNALS$1].status >= 200 && this[INTERNALS$1].status < 300;\n\t}\n\n\tget redirected() {\n\t\treturn this[INTERNALS$1].counter > 0;\n\t}\n\n\tget statusText() {\n\t\treturn this[INTERNALS$1].statusText;\n\t}\n\n\tget headers() {\n\t\treturn this[INTERNALS$1].headers;\n\t}\n\n\t/**\n  * Clone this response\n  *\n  * @return  Response\n  */\n\tclone() {\n\t\treturn new Response(clone(this), {\n\t\t\turl: this.url,\n\t\t\tstatus: this.status,\n\t\t\tstatusText: this.statusText,\n\t\t\theaders: this.headers,\n\t\t\tok: this.ok,\n\t\t\tredirected: this.redirected\n\t\t});\n\t}\n}\n\nBody.mixIn(Response.prototype);\n\nObject.defineProperties(Response.prototype, {\n\turl: { enumerable: true },\n\tstatus: { enumerable: true },\n\tok: { enumerable: true },\n\tredirected: { enumerable: true },\n\tstatusText: { enumerable: true },\n\theaders: { enumerable: true },\n\tclone: { enumerable: true }\n});\n\nObject.defineProperty(Response.prototype, Symbol.toStringTag, {\n\tvalue: 'Response',\n\twritable: false,\n\tenumerable: false,\n\tconfigurable: true\n});\n\nconst INTERNALS$2 = Symbol('Request internals');\nconst URL = Url.URL || whatwgUrl.URL;\n\n// fix an issue where \"format\", \"parse\" aren't a named export for node <10\nconst parse_url = Url.parse;\nconst format_url = Url.format;\n\n/**\n * Wrapper around `new URL` to handle arbitrary URLs\n *\n * @param  {string} urlStr\n * @return {void}\n */\nfunction parseURL(urlStr) {\n\t/*\n \tCheck whether the URL is absolute or not\n \t\tScheme: https://tools.ietf.org/html/rfc3986#section-3.1\n \tAbsolute URL: https://tools.ietf.org/html/rfc3986#section-4.3\n */\n\tif (/^[a-zA-Z][a-zA-Z\\d+\\-.]*:/.exec(urlStr)) {\n\t\turlStr = new URL(urlStr).toString();\n\t}\n\n\t// Fallback to old implementation for arbitrary URLs\n\treturn parse_url(urlStr);\n}\n\nconst streamDestructionSupported = 'destroy' in Stream.Readable.prototype;\n\n/**\n * Check if a value is an instance of Request.\n *\n * @param   Mixed   input\n * @return  Boolean\n */\nfunction isRequest(input) {\n\treturn typeof input === 'object' && typeof input[INTERNALS$2] === 'object';\n}\n\nfunction isAbortSignal(signal) {\n\tconst proto = signal && typeof signal === 'object' && Object.getPrototypeOf(signal);\n\treturn !!(proto && proto.constructor.name === 'AbortSignal');\n}\n\n/**\n * Request class\n *\n * @param   Mixed   input  Url or Request instance\n * @param   Object  init   Custom options\n * @return  Void\n */\nclass Request {\n\tconstructor(input) {\n\t\tlet init = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {};\n\n\t\tlet parsedURL;\n\n\t\t// normalize input\n\t\tif (!isRequest(input)) {\n\t\t\tif (input && input.href) {\n\t\t\t\t// in order to support Node.js' Url objects; though WHATWG's URL objects\n\t\t\t\t// will fall into this branch also (since their `toString()` will return\n\t\t\t\t// `href` property anyway)\n\t\t\t\tparsedURL = parseURL(input.href);\n\t\t\t} else {\n\t\t\t\t// coerce input to a string before attempting to parse\n\t\t\t\tparsedURL = parseURL(`${input}`);\n\t\t\t}\n\t\t\tinput = {};\n\t\t} else {\n\t\t\tparsedURL = parseURL(input.url);\n\t\t}\n\n\t\tlet method = init.method || input.method || 'GET';\n\t\tmethod = method.toUpperCase();\n\n\t\tif ((init.body != null || isRequest(input) && input.body !== null) && (method === 'GET' || method === 'HEAD')) {\n\t\t\tthrow new TypeError('Request with GET/HEAD method cannot have body');\n\t\t}\n\n\t\tlet inputBody = init.body != null ? init.body : isRequest(input) && input.body !== null ? clone(input) : null;\n\n\t\tBody.call(this, inputBody, {\n\t\t\ttimeout: init.timeout || input.timeout || 0,\n\t\t\tsize: init.size || input.size || 0\n\t\t});\n\n\t\tconst headers = new Headers(init.headers || input.headers || {});\n\n\t\tif (inputBody != null && !headers.has('Content-Type')) {\n\t\t\tconst contentType = extractContentType(inputBody);\n\t\t\tif (contentType) {\n\t\t\t\theaders.append('Content-Type', contentType);\n\t\t\t}\n\t\t}\n\n\t\tlet signal = isRequest(input) ? input.signal : null;\n\t\tif ('signal' in init) signal = init.signal;\n\n\t\tif (signal != null && !isAbortSignal(signal)) {\n\t\t\tthrow new TypeError('Expected signal to be an instanceof AbortSignal');\n\t\t}\n\n\t\tthis[INTERNALS$2] = {\n\t\t\tmethod,\n\t\t\tredirect: init.redirect || input.redirect || 'follow',\n\t\t\theaders,\n\t\t\tparsedURL,\n\t\t\tsignal\n\t\t};\n\n\t\t// node-fetch-only options\n\t\tthis.follow = init.follow !== undefined ? init.follow : input.follow !== undefined ? input.follow : 20;\n\t\tthis.compress = init.compress !== undefined ? init.compress : input.compress !== undefined ? input.compress : true;\n\t\tthis.counter = init.counter || input.counter || 0;\n\t\tthis.agent = init.agent || input.agent;\n\t}\n\n\tget method() {\n\t\treturn this[INTERNALS$2].method;\n\t}\n\n\tget url() {\n\t\treturn format_url(this[INTERNALS$2].parsedURL);\n\t}\n\n\tget headers() {\n\t\treturn this[INTERNALS$2].headers;\n\t}\n\n\tget redirect() {\n\t\treturn this[INTERNALS$2].redirect;\n\t}\n\n\tget signal() {\n\t\treturn this[INTERNALS$2].signal;\n\t}\n\n\t/**\n  * Clone this request\n  *\n  * @return  Request\n  */\n\tclone() {\n\t\treturn new Request(this);\n\t}\n}\n\nBody.mixIn(Request.prototype);\n\nObject.defineProperty(Request.prototype, Symbol.toStringTag, {\n\tvalue: 'Request',\n\twritable: false,\n\tenumerable: false,\n\tconfigurable: true\n});\n\nObject.defineProperties(Request.prototype, {\n\tmethod: { enumerable: true },\n\turl: { enumerable: true },\n\theaders: { enumerable: true },\n\tredirect: { enumerable: true },\n\tclone: { enumerable: true },\n\tsignal: { enumerable: true }\n});\n\n/**\n * Convert a Request to Node.js http request options.\n *\n * @param   Request  A Request instance\n * @return  Object   The options object to be passed to http.request\n */\nfunction getNodeRequestOptions(request) {\n\tconst parsedURL = request[INTERNALS$2].parsedURL;\n\tconst headers = new Headers(request[INTERNALS$2].headers);\n\n\t// fetch step 1.3\n\tif (!headers.has('Accept')) {\n\t\theaders.set('Accept', '*/*');\n\t}\n\n\t// Basic fetch\n\tif (!parsedURL.protocol || !parsedURL.hostname) {\n\t\tthrow new TypeError('Only absolute URLs are supported');\n\t}\n\n\tif (!/^https?:$/.test(parsedURL.protocol)) {\n\t\tthrow new TypeError('Only HTTP(S) protocols are supported');\n\t}\n\n\tif (request.signal && request.body instanceof Stream.Readable && !streamDestructionSupported) {\n\t\tthrow new Error('Cancellation of streamed requests with AbortSignal is not supported in node < 8');\n\t}\n\n\t// HTTP-network-or-cache fetch steps 2.4-2.7\n\tlet contentLengthValue = null;\n\tif (request.body == null && /^(POST|PUT)$/i.test(request.method)) {\n\t\tcontentLengthValue = '0';\n\t}\n\tif (request.body != null) {\n\t\tconst totalBytes = getTotalBytes(request);\n\t\tif (typeof totalBytes === 'number') {\n\t\t\tcontentLengthValue = String(totalBytes);\n\t\t}\n\t}\n\tif (contentLengthValue) {\n\t\theaders.set('Content-Length', contentLengthValue);\n\t}\n\n\t// HTTP-network-or-cache fetch step 2.11\n\tif (!headers.has('User-Agent')) {\n\t\theaders.set('User-Agent', 'node-fetch/1.0 (+https://github.com/bitinn/node-fetch)');\n\t}\n\n\t// HTTP-network-or-cache fetch step 2.15\n\tif (request.compress && !headers.has('Accept-Encoding')) {\n\t\theaders.set('Accept-Encoding', 'gzip,deflate');\n\t}\n\n\tlet agent = request.agent;\n\tif (typeof agent === 'function') {\n\t\tagent = agent(parsedURL);\n\t}\n\n\tif (!headers.has('Connection') && !agent) {\n\t\theaders.set('Connection', 'close');\n\t}\n\n\t// HTTP-network fetch step 4.2\n\t// chunked encoding is handled by Node.js\n\n\treturn Object.assign({}, parsedURL, {\n\t\tmethod: request.method,\n\t\theaders: exportNodeCompatibleHeaders(headers),\n\t\tagent\n\t});\n}\n\n/**\n * abort-error.js\n *\n * AbortError interface for cancelled requests\n */\n\n/**\n * Create AbortError instance\n *\n * @param   String      message      Error message for human\n * @return  AbortError\n */\nfunction AbortError(message) {\n  Error.call(this, message);\n\n  this.type = 'aborted';\n  this.message = message;\n\n  // hide custom error implementation details from end-users\n  Error.captureStackTrace(this, this.constructor);\n}\n\nAbortError.prototype = Object.create(Error.prototype);\nAbortError.prototype.constructor = AbortError;\nAbortError.prototype.name = 'AbortError';\n\nconst URL$1 = Url.URL || whatwgUrl.URL;\n\n// fix an issue where \"PassThrough\", \"resolve\" aren't a named export for node <10\nconst PassThrough$1 = Stream.PassThrough;\n\nconst isDomainOrSubdomain = function isDomainOrSubdomain(destination, original) {\n\tconst orig = new URL$1(original).hostname;\n\tconst dest = new URL$1(destination).hostname;\n\n\treturn orig === dest || orig[orig.length - dest.length - 1] === '.' && orig.endsWith(dest);\n};\n\n/**\n * Fetch function\n *\n * @param   Mixed    url   Absolute url or Request instance\n * @param   Object   opts  Fetch options\n * @return  Promise\n */\nfunction fetch(url, opts) {\n\n\t// allow custom promise\n\tif (!fetch.Promise) {\n\t\tthrow new Error('native promise missing, set fetch.Promise to your favorite alternative');\n\t}\n\n\tBody.Promise = fetch.Promise;\n\n\t// wrap http.request into fetch\n\treturn new fetch.Promise(function (resolve, reject) {\n\t\t// build request object\n\t\tconst request = new Request(url, opts);\n\t\tconst options = getNodeRequestOptions(request);\n\n\t\tconst send = (options.protocol === 'https:' ? https : http).request;\n\t\tconst signal = request.signal;\n\n\t\tlet response = null;\n\n\t\tconst abort = function abort() {\n\t\t\tlet error = new AbortError('The user aborted a request.');\n\t\t\treject(error);\n\t\t\tif (request.body && request.body instanceof Stream.Readable) {\n\t\t\t\trequest.body.destroy(error);\n\t\t\t}\n\t\t\tif (!response || !response.body) return;\n\t\t\tresponse.body.emit('error', error);\n\t\t};\n\n\t\tif (signal && signal.aborted) {\n\t\t\tabort();\n\t\t\treturn;\n\t\t}\n\n\t\tconst abortAndFinalize = function abortAndFinalize() {\n\t\t\tabort();\n\t\t\tfinalize();\n\t\t};\n\n\t\t// send request\n\t\tconst req = send(options);\n\t\tlet reqTimeout;\n\n\t\tif (signal) {\n\t\t\tsignal.addEventListener('abort', abortAndFinalize);\n\t\t}\n\n\t\tfunction finalize() {\n\t\t\treq.abort();\n\t\t\tif (signal) signal.removeEventListener('abort', abortAndFinalize);\n\t\t\tclearTimeout(reqTimeout);\n\t\t}\n\n\t\tif (request.timeout) {\n\t\t\treq.once('socket', function (socket) {\n\t\t\t\treqTimeout = setTimeout(function () {\n\t\t\t\t\treject(new FetchError(`network timeout at: ${request.url}`, 'request-timeout'));\n\t\t\t\t\tfinalize();\n\t\t\t\t}, request.timeout);\n\t\t\t});\n\t\t}\n\n\t\treq.on('error', function (err) {\n\t\t\treject(new FetchError(`request to ${request.url} failed, reason: ${err.message}`, 'system', err));\n\t\t\tfinalize();\n\t\t});\n\n\t\treq.on('response', function (res) {\n\t\t\tclearTimeout(reqTimeout);\n\n\t\t\tconst headers = createHeadersLenient(res.headers);\n\n\t\t\t// HTTP fetch step 5\n\t\t\tif (fetch.isRedirect(res.statusCode)) {\n\t\t\t\t// HTTP fetch step 5.2\n\t\t\t\tconst location = headers.get('Location');\n\n\t\t\t\t// HTTP fetch step 5.3\n\t\t\t\tlet locationURL = null;\n\t\t\t\ttry {\n\t\t\t\t\tlocationURL = location === null ? null : new URL$1(location, request.url).toString();\n\t\t\t\t} catch (err) {\n\t\t\t\t\t// error here can only be invalid URL in Location: header\n\t\t\t\t\t// do not throw when options.redirect == manual\n\t\t\t\t\t// let the user extract the errorneous redirect URL\n\t\t\t\t\tif (request.redirect !== 'manual') {\n\t\t\t\t\t\treject(new FetchError(`uri requested responds with an invalid redirect URL: ${location}`, 'invalid-redirect'));\n\t\t\t\t\t\tfinalize();\n\t\t\t\t\t\treturn;\n\t\t\t\t\t}\n\t\t\t\t}\n\n\t\t\t\t// HTTP fetch step 5.5\n\t\t\t\tswitch (request.redirect) {\n\t\t\t\t\tcase 'error':\n\t\t\t\t\t\treject(new FetchError(`uri requested responds with a redirect, redirect mode is set to error: ${request.url}`, 'no-redirect'));\n\t\t\t\t\t\tfinalize();\n\t\t\t\t\t\treturn;\n\t\t\t\t\tcase 'manual':\n\t\t\t\t\t\t// node-fetch-specific step: make manual redirect a bit easier to use by setting the Location header value to the resolved URL.\n\t\t\t\t\t\tif (locationURL !== null) {\n\t\t\t\t\t\t\t// handle corrupted header\n\t\t\t\t\t\t\ttry {\n\t\t\t\t\t\t\t\theaders.set('Location', locationURL);\n\t\t\t\t\t\t\t} catch (err) {\n\t\t\t\t\t\t\t\t// istanbul ignore next: nodejs server prevent invalid response headers, we can't test this through normal request\n\t\t\t\t\t\t\t\treject(err);\n\t\t\t\t\t\t\t}\n\t\t\t\t\t\t}\n\t\t\t\t\t\tbreak;\n\t\t\t\t\tcase 'follow':\n\t\t\t\t\t\t// HTTP-redirect fetch step 2\n\t\t\t\t\t\tif (locationURL === null) {\n\t\t\t\t\t\t\tbreak;\n\t\t\t\t\t\t}\n\n\t\t\t\t\t\t// HTTP-redirect fetch step 5\n\t\t\t\t\t\tif (request.counter >= request.follow) {\n\t\t\t\t\t\t\treject(new FetchError(`maximum redirect reached at: ${request.url}`, 'max-redirect'));\n\t\t\t\t\t\t\tfinalize();\n\t\t\t\t\t\t\treturn;\n\t\t\t\t\t\t}\n\n\t\t\t\t\t\t// HTTP-redirect fetch step 6 (counter increment)\n\t\t\t\t\t\t// Create a new Request object.\n\t\t\t\t\t\tconst requestOpts = {\n\t\t\t\t\t\t\theaders: new Headers(request.headers),\n\t\t\t\t\t\t\tfollow: request.follow,\n\t\t\t\t\t\t\tcounter: request.counter + 1,\n\t\t\t\t\t\t\tagent: request.agent,\n\t\t\t\t\t\t\tcompress: request.compress,\n\t\t\t\t\t\t\tmethod: request.method,\n\t\t\t\t\t\t\tbody: request.body,\n\t\t\t\t\t\t\tsignal: request.signal,\n\t\t\t\t\t\t\ttimeout: request.timeout,\n\t\t\t\t\t\t\tsize: request.size\n\t\t\t\t\t\t};\n\n\t\t\t\t\t\tif (!isDomainOrSubdomain(request.url, locationURL)) {\n\t\t\t\t\t\t\tfor (const name of ['authorization', 'www-authenticate', 'cookie', 'cookie2']) {\n\t\t\t\t\t\t\t\trequestOpts.headers.delete(name);\n\t\t\t\t\t\t\t}\n\t\t\t\t\t\t}\n\n\t\t\t\t\t\t// HTTP-redirect fetch step 9\n\t\t\t\t\t\tif (res.statusCode !== 303 && request.body && getTotalBytes(request) === null) {\n\t\t\t\t\t\t\treject(new FetchError('Cannot follow redirect with body being a readable stream', 'unsupported-redirect'));\n\t\t\t\t\t\t\tfinalize();\n\t\t\t\t\t\t\treturn;\n\t\t\t\t\t\t}\n\n\t\t\t\t\t\t// HTTP-redirect fetch step 11\n\t\t\t\t\t\tif (res.statusCode === 303 || (res.statusCode === 301 || res.statusCode === 302) && request.method === 'POST') {\n\t\t\t\t\t\t\trequestOpts.method = 'GET';\n\t\t\t\t\t\t\trequestOpts.body = undefined;\n\t\t\t\t\t\t\trequestOpts.headers.delete('content-length');\n\t\t\t\t\t\t}\n\n\t\t\t\t\t\t// HTTP-redirect fetch step 15\n\t\t\t\t\t\tresolve(fetch(new Request(locationURL, requestOpts)));\n\t\t\t\t\t\tfinalize();\n\t\t\t\t\t\treturn;\n\t\t\t\t}\n\t\t\t}\n\n\t\t\t// prepare response\n\t\t\tres.once('end', function () {\n\t\t\t\tif (signal) signal.removeEventListener('abort', abortAndFinalize);\n\t\t\t});\n\t\t\tlet body = res.pipe(new PassThrough$1());\n\n\t\t\tconst response_options = {\n\t\t\t\turl: request.url,\n\t\t\t\tstatus: res.statusCode,\n\t\t\t\tstatusText: res.statusMessage,\n\t\t\t\theaders: headers,\n\t\t\t\tsize: request.size,\n\t\t\t\ttimeout: request.timeout,\n\t\t\t\tcounter: request.counter\n\t\t\t};\n\n\t\t\t// HTTP-network fetch step 12.1.1.3\n\t\t\tconst codings = headers.get('Content-Encoding');\n\n\t\t\t// HTTP-network fetch step 12.1.1.4: handle content codings\n\n\t\t\t// in following scenarios we ignore compression support\n\t\t\t// 1. compression support is disabled\n\t\t\t// 2. HEAD request\n\t\t\t// 3. no Content-Encoding header\n\t\t\t// 4. no content response (204)\n\t\t\t// 5. content not modified response (304)\n\t\t\tif (!request.compress || request.method === 'HEAD' || codings === null || res.statusCode === 204 || res.statusCode === 304) {\n\t\t\t\tresponse = new Response(body, response_options);\n\t\t\t\tresolve(response);\n\t\t\t\treturn;\n\t\t\t}\n\n\t\t\t// For Node v6+\n\t\t\t// Be less strict when decoding compressed responses, since sometimes\n\t\t\t// servers send slightly invalid responses that are still accepted\n\t\t\t// by common browsers.\n\t\t\t// Always using Z_SYNC_FLUSH is what cURL does.\n\t\t\tconst zlibOptions = {\n\t\t\t\tflush: zlib.Z_SYNC_FLUSH,\n\t\t\t\tfinishFlush: zlib.Z_SYNC_FLUSH\n\t\t\t};\n\n\t\t\t// for gzip\n\t\t\tif (codings == 'gzip' || codings == 'x-gzip') {\n\t\t\t\tbody = body.pipe(zlib.createGunzip(zlibOptions));\n\t\t\t\tresponse = new Response(body, response_options);\n\t\t\t\tresolve(response);\n\t\t\t\treturn;\n\t\t\t}\n\n\t\t\t// for deflate\n\t\t\tif (codings == 'deflate' || codings == 'x-deflate') {\n\t\t\t\t// handle the infamous raw deflate response from old servers\n\t\t\t\t// a hack for old IIS and Apache servers\n\t\t\t\tconst raw = res.pipe(new PassThrough$1());\n\t\t\t\traw.once('data', function (chunk) {\n\t\t\t\t\t// see http://stackoverflow.com/questions/37519828\n\t\t\t\t\tif ((chunk[0] & 0x0F) === 0x08) {\n\t\t\t\t\t\tbody = body.pipe(zlib.createInflate());\n\t\t\t\t\t} else {\n\t\t\t\t\t\tbody = body.pipe(zlib.createInflateRaw());\n\t\t\t\t\t}\n\t\t\t\t\tresponse = new Response(body, response_options);\n\t\t\t\t\tresolve(response);\n\t\t\t\t});\n\t\t\t\treturn;\n\t\t\t}\n\n\t\t\t// for br\n\t\t\tif (codings == 'br' && typeof zlib.createBrotliDecompress === 'function') {\n\t\t\t\tbody = body.pipe(zlib.createBrotliDecompress());\n\t\t\t\tresponse = new Response(body, response_options);\n\t\t\t\tresolve(response);\n\t\t\t\treturn;\n\t\t\t}\n\n\t\t\t// otherwise, use response as-is\n\t\t\tresponse = new Response(body, response_options);\n\t\t\tresolve(response);\n\t\t});\n\n\t\twriteToStream(req, request);\n\t});\n}\n/**\n * Redirect code matching\n *\n * @param   Number   code  Status code\n * @return  Boolean\n */\nfetch.isRedirect = function (code) {\n\treturn code === 301 || code === 302 || code === 303 || code === 307 || code === 308;\n};\n\n// expose Promise\nfetch.Promise = global.Promise;\n\nmodule.exports = exports = fetch;\nObject.defineProperty(exports, \"__esModule\", { value: true });\nexports.default = exports;\nexports.Headers = Headers;\nexports.Request = Request;\nexports.Response = Response;\nexports.FetchError = FetchError;\n","\"use strict\";\n\nvar punycode = require(\"punycode\");\nvar mappingTable = require(\"./lib/mappingTable.json\");\n\nvar PROCESSING_OPTIONS = {\n  TRANSITIONAL: 0,\n  NONTRANSITIONAL: 1\n};\n\nfunction normalize(str) { // fix bug in v8\n  return str.split('\\u0000').map(function (s) { return s.normalize('NFC'); }).join('\\u0000');\n}\n\nfunction findStatus(val) {\n  var start = 0;\n  var end = mappingTable.length - 1;\n\n  while (start <= end) {\n    var mid = Math.floor((start + end) / 2);\n\n    var target = mappingTable[mid];\n    if (target[0][0] <= val && target[0][1] >= val) {\n      return target;\n    } else if (target[0][0] > val) {\n      end = mid - 1;\n    } else {\n      start = mid + 1;\n    }\n  }\n\n  return null;\n}\n\nvar regexAstralSymbols = /[\\uD800-\\uDBFF][\\uDC00-\\uDFFF]/g;\n\nfunction countSymbols(string) {\n  return string\n    // replace every surrogate pair with a BMP symbol\n    .replace(regexAstralSymbols, '_')\n    // then get the length\n    .length;\n}\n\nfunction mapChars(domain_name, useSTD3, processing_option) {\n  var hasError = false;\n  var processed = \"\";\n\n  var len = countSymbols(domain_name);\n  for (var i = 0; i < len; ++i) {\n    var codePoint = domain_name.codePointAt(i);\n    var status = findStatus(codePoint);\n\n    switch (status[1]) {\n      case \"disallowed\":\n        hasError = true;\n        processed += String.fromCodePoint(codePoint);\n        break;\n      case \"ignored\":\n        break;\n      case \"mapped\":\n        processed += String.fromCodePoint.apply(String, status[2]);\n        break;\n      case \"deviation\":\n        if (processing_option === PROCESSING_OPTIONS.TRANSITIONAL) {\n          processed += String.fromCodePoint.apply(String, status[2]);\n        } else {\n          processed += String.fromCodePoint(codePoint);\n        }\n        break;\n      case \"valid\":\n        processed += String.fromCodePoint(codePoint);\n        break;\n      case \"disallowed_STD3_mapped\":\n        if (useSTD3) {\n          hasError = true;\n          processed += String.fromCodePoint(codePoint);\n        } else {\n          processed += String.fromCodePoint.apply(String, status[2]);\n        }\n        break;\n      case \"disallowed_STD3_valid\":\n        if (useSTD3) {\n          hasError = true;\n        }\n\n        processed += String.fromCodePoint(codePoint);\n        break;\n    }\n  }\n\n  return {\n    string: processed,\n    error: hasError\n  };\n}\n\nvar combiningMarksRegex = /[\\u0300-\\u036F\\u0483-\\u0489\\u0591-\\u05BD\\u05BF\\u05C1\\u05C2\\u05C4\\u05C5\\u05C7\\u0610-\\u061A\\u064B-\\u065F\\u0670\\u06D6-\\u06DC\\u06DF-\\u06E4\\u06E7\\u06E8\\u06EA-\\u06ED\\u0711\\u0730-\\u074A\\u07A6-\\u07B0\\u07EB-\\u07F3\\u0816-\\u0819\\u081B-\\u0823\\u0825-\\u0827\\u0829-\\u082D\\u0859-\\u085B\\u08E4-\\u0903\\u093A-\\u093C\\u093E-\\u094F\\u0951-\\u0957\\u0962\\u0963\\u0981-\\u0983\\u09BC\\u09BE-\\u09C4\\u09C7\\u09C8\\u09CB-\\u09CD\\u09D7\\u09E2\\u09E3\\u0A01-\\u0A03\\u0A3C\\u0A3E-\\u0A42\\u0A47\\u0A48\\u0A4B-\\u0A4D\\u0A51\\u0A70\\u0A71\\u0A75\\u0A81-\\u0A83\\u0ABC\\u0ABE-\\u0AC5\\u0AC7-\\u0AC9\\u0ACB-\\u0ACD\\u0AE2\\u0AE3\\u0B01-\\u0B03\\u0B3C\\u0B3E-\\u0B44\\u0B47\\u0B48\\u0B4B-\\u0B4D\\u0B56\\u0B57\\u0B62\\u0B63\\u0B82\\u0BBE-\\u0BC2\\u0BC6-\\u0BC8\\u0BCA-\\u0BCD\\u0BD7\\u0C00-\\u0C03\\u0C3E-\\u0C44\\u0C46-\\u0C48\\u0C4A-\\u0C4D\\u0C55\\u0C56\\u0C62\\u0C63\\u0C81-\\u0C83\\u0CBC\\u0CBE-\\u0CC4\\u0CC6-\\u0CC8\\u0CCA-\\u0CCD\\u0CD5\\u0CD6\\u0CE2\\u0CE3\\u0D01-\\u0D03\\u0D3E-\\u0D44\\u0D46-\\u0D48\\u0D4A-\\u0D4D\\u0D57\\u0D62\\u0D63\\u0D82\\u0D83\\u0DCA\\u0DCF-\\u0DD4\\u0DD6\\u0DD8-\\u0DDF\\u0DF2\\u0DF3\\u0E31\\u0E34-\\u0E3A\\u0E47-\\u0E4E\\u0EB1\\u0EB4-\\u0EB9\\u0EBB\\u0EBC\\u0EC8-\\u0ECD\\u0F18\\u0F19\\u0F35\\u0F37\\u0F39\\u0F3E\\u0F3F\\u0F71-\\u0F84\\u0F86\\u0F87\\u0F8D-\\u0F97\\u0F99-\\u0FBC\\u0FC6\\u102B-\\u103E\\u1056-\\u1059\\u105E-\\u1060\\u1062-\\u1064\\u1067-\\u106D\\u1071-\\u1074\\u1082-\\u108D\\u108F\\u109A-\\u109D\\u135D-\\u135F\\u1712-\\u1714\\u1732-\\u1734\\u1752\\u1753\\u1772\\u1773\\u17B4-\\u17D3\\u17DD\\u180B-\\u180D\\u18A9\\u1920-\\u192B\\u1930-\\u193B\\u19B0-\\u19C0\\u19C8\\u19C9\\u1A17-\\u1A1B\\u1A55-\\u1A5E\\u1A60-\\u1A7C\\u1A7F\\u1AB0-\\u1ABE\\u1B00-\\u1B04\\u1B34-\\u1B44\\u1B6B-\\u1B73\\u1B80-\\u1B82\\u1BA1-\\u1BAD\\u1BE6-\\u1BF3\\u1C24-\\u1C37\\u1CD0-\\u1CD2\\u1CD4-\\u1CE8\\u1CED\\u1CF2-\\u1CF4\\u1CF8\\u1CF9\\u1DC0-\\u1DF5\\u1DFC-\\u1DFF\\u20D0-\\u20F0\\u2CEF-\\u2CF1\\u2D7F\\u2DE0-\\u2DFF\\u302A-\\u302F\\u3099\\u309A\\uA66F-\\uA672\\uA674-\\uA67D\\uA69F\\uA6F0\\uA6F1\\uA802\\uA806\\uA80B\\uA823-\\uA827\\uA880\\uA881\\uA8B4-\\uA8C4\\uA8E0-\\uA8F1\\uA926-\\uA92D\\uA947-\\uA953\\uA980-\\uA983\\uA9B3-\\uA9C0\\uA9E5\\uAA29-\\uAA36\\uAA43\\uAA4C\\uAA4D\\uAA7B-\\uAA7D\\uAAB0\\uAAB2-\\uAAB4\\uAAB7\\uAAB8\\uAABE\\uAABF\\uAAC1\\uAAEB-\\uAAEF\\uAAF5\\uAAF6\\uABE3-\\uABEA\\uABEC\\uABED\\uFB1E\\uFE00-\\uFE0F\\uFE20-\\uFE2D]|\\uD800[\\uDDFD\\uDEE0\\uDF76-\\uDF7A]|\\uD802[\\uDE01-\\uDE03\\uDE05\\uDE06\\uDE0C-\\uDE0F\\uDE38-\\uDE3A\\uDE3F\\uDEE5\\uDEE6]|\\uD804[\\uDC00-\\uDC02\\uDC38-\\uDC46\\uDC7F-\\uDC82\\uDCB0-\\uDCBA\\uDD00-\\uDD02\\uDD27-\\uDD34\\uDD73\\uDD80-\\uDD82\\uDDB3-\\uDDC0\\uDE2C-\\uDE37\\uDEDF-\\uDEEA\\uDF01-\\uDF03\\uDF3C\\uDF3E-\\uDF44\\uDF47\\uDF48\\uDF4B-\\uDF4D\\uDF57\\uDF62\\uDF63\\uDF66-\\uDF6C\\uDF70-\\uDF74]|\\uD805[\\uDCB0-\\uDCC3\\uDDAF-\\uDDB5\\uDDB8-\\uDDC0\\uDE30-\\uDE40\\uDEAB-\\uDEB7]|\\uD81A[\\uDEF0-\\uDEF4\\uDF30-\\uDF36]|\\uD81B[\\uDF51-\\uDF7E\\uDF8F-\\uDF92]|\\uD82F[\\uDC9D\\uDC9E]|\\uD834[\\uDD65-\\uDD69\\uDD6D-\\uDD72\\uDD7B-\\uDD82\\uDD85-\\uDD8B\\uDDAA-\\uDDAD\\uDE42-\\uDE44]|\\uD83A[\\uDCD0-\\uDCD6]|\\uDB40[\\uDD00-\\uDDEF]/;\n\nfunction validateLabel(label, processing_option) {\n  if (label.substr(0, 4) === \"xn--\") {\n    label = punycode.toUnicode(label);\n    processing_option = PROCESSING_OPTIONS.NONTRANSITIONAL;\n  }\n\n  var error = false;\n\n  if (normalize(label) !== label ||\n      (label[3] === \"-\" && label[4] === \"-\") ||\n      label[0] === \"-\" || label[label.length - 1] === \"-\" ||\n      label.indexOf(\".\") !== -1 ||\n      label.search(combiningMarksRegex) === 0) {\n    error = true;\n  }\n\n  var len = countSymbols(label);\n  for (var i = 0; i < len; ++i) {\n    var status = findStatus(label.codePointAt(i));\n    if ((processing === PROCESSING_OPTIONS.TRANSITIONAL && status[1] !== \"valid\") ||\n        (processing === PROCESSING_OPTIONS.NONTRANSITIONAL &&\n         status[1] !== \"valid\" && status[1] !== \"deviation\")) {\n      error = true;\n      break;\n    }\n  }\n\n  return {\n    label: label,\n    error: error\n  };\n}\n\nfunction processing(domain_name, useSTD3, processing_option) {\n  var result = mapChars(domain_name, useSTD3, processing_option);\n  result.string = normalize(result.string);\n\n  var labels = result.string.split(\".\");\n  for (var i = 0; i < labels.length; ++i) {\n    try {\n      var validation = validateLabel(labels[i]);\n      labels[i] = validation.label;\n      result.error = result.error || validation.error;\n    } catch(e) {\n      result.error = true;\n    }\n  }\n\n  return {\n    string: labels.join(\".\"),\n    error: result.error\n  };\n}\n\nmodule.exports.toASCII = function(domain_name, useSTD3, processing_option, verifyDnsLength) {\n  var result = processing(domain_name, useSTD3, processing_option);\n  var labels = result.string.split(\".\");\n  labels = labels.map(function(l) {\n    try {\n      return punycode.toASCII(l);\n    } catch(e) {\n      result.error = true;\n      return l;\n    }\n  });\n\n  if (verifyDnsLength) {\n    var total = labels.slice(0, labels.length - 1).join(\".\").length;\n    if (total.length > 253 || total.length === 0) {\n      result.error = true;\n    }\n\n    for (var i=0; i < labels.length; ++i) {\n      if (labels.length > 63 || labels.length === 0) {\n        result.error = true;\n        break;\n      }\n    }\n  }\n\n  if (result.error) return null;\n  return labels.join(\".\");\n};\n\nmodule.exports.toUnicode = function(domain_name, useSTD3) {\n  var result = processing(domain_name, useSTD3, PROCESSING_OPTIONS.NONTRANSITIONAL);\n\n  return {\n    domain: result.string,\n    error: result.error\n  };\n};\n\nmodule.exports.PROCESSING_OPTIONS = PROCESSING_OPTIONS;\n","module.exports = require('./lib/tunnel');\n","'use strict';\n\nvar net = require('net');\nvar tls = require('tls');\nvar http = require('http');\nvar https = require('https');\nvar events = require('events');\nvar assert = require('assert');\nvar util = require('util');\n\n\nexports.httpOverHttp = httpOverHttp;\nexports.httpsOverHttp = httpsOverHttp;\nexports.httpOverHttps = httpOverHttps;\nexports.httpsOverHttps = httpsOverHttps;\n\n\nfunction httpOverHttp(options) {\n  var agent = new TunnelingAgent(options);\n  agent.request = http.request;\n  return agent;\n}\n\nfunction httpsOverHttp(options) {\n  var agent = new TunnelingAgent(options);\n  agent.request = http.request;\n  agent.createSocket = createSecureSocket;\n  agent.defaultPort = 443;\n  return agent;\n}\n\nfunction httpOverHttps(options) {\n  var agent = new TunnelingAgent(options);\n  agent.request = https.request;\n  return agent;\n}\n\nfunction httpsOverHttps(options) {\n  var agent = new TunnelingAgent(options);\n  agent.request = https.request;\n  agent.createSocket = createSecureSocket;\n  agent.defaultPort = 443;\n  return agent;\n}\n\n\nfunction TunnelingAgent(options) {\n  var self = this;\n  self.options = options || {};\n  self.proxyOptions = self.options.proxy || {};\n  self.maxSockets = self.options.maxSockets || http.Agent.defaultMaxSockets;\n  self.requests = [];\n  self.sockets = [];\n\n  self.on('free', function onFree(socket, host, port, localAddress) {\n    var options = toOptions(host, port, localAddress);\n    for (var i = 0, len = self.requests.length; i < len; ++i) {\n      var pending = self.requests[i];\n      if (pending.host === options.host && pending.port === options.port) {\n        // Detect the request to connect same origin server,\n        // reuse the connection.\n        self.requests.splice(i, 1);\n        pending.request.onSocket(socket);\n        return;\n      }\n    }\n    socket.destroy();\n    self.removeSocket(socket);\n  });\n}\nutil.inherits(TunnelingAgent, events.EventEmitter);\n\nTunnelingAgent.prototype.addRequest = function addRequest(req, host, port, localAddress) {\n  var self = this;\n  var options = mergeOptions({request: req}, self.options, toOptions(host, port, localAddress));\n\n  if (self.sockets.length >= this.maxSockets) {\n    // We are over limit so we'll add it to the queue.\n    self.requests.push(options);\n    return;\n  }\n\n  // If we are under maxSockets create a new one.\n  self.createSocket(options, function(socket) {\n    socket.on('free', onFree);\n    socket.on('close', onCloseOrRemove);\n    socket.on('agentRemove', onCloseOrRemove);\n    req.onSocket(socket);\n\n    function onFree() {\n      self.emit('free', socket, options);\n    }\n\n    function onCloseOrRemove(err) {\n      self.removeSocket(socket);\n      socket.removeListener('free', onFree);\n      socket.removeListener('close', onCloseOrRemove);\n      socket.removeListener('agentRemove', onCloseOrRemove);\n    }\n  });\n};\n\nTunnelingAgent.prototype.createSocket = function createSocket(options, cb) {\n  var self = this;\n  var placeholder = {};\n  self.sockets.push(placeholder);\n\n  var connectOptions = mergeOptions({}, self.proxyOptions, {\n    method: 'CONNECT',\n    path: options.host + ':' + options.port,\n    agent: false,\n    headers: {\n      host: options.host + ':' + options.port\n    }\n  });\n  if (options.localAddress) {\n    connectOptions.localAddress = options.localAddress;\n  }\n  if (connectOptions.proxyAuth) {\n    connectOptions.headers = connectOptions.headers || {};\n    connectOptions.headers['Proxy-Authorization'] = 'Basic ' +\n        new Buffer(connectOptions.proxyAuth).toString('base64');\n  }\n\n  debug('making CONNECT request');\n  var connectReq = self.request(connectOptions);\n  connectReq.useChunkedEncodingByDefault = false; // for v0.6\n  connectReq.once('response', onResponse); // for v0.6\n  connectReq.once('upgrade', onUpgrade);   // for v0.6\n  connectReq.once('connect', onConnect);   // for v0.7 or later\n  connectReq.once('error', onError);\n  connectReq.end();\n\n  function onResponse(res) {\n    // Very hacky. This is necessary to avoid http-parser leaks.\n    res.upgrade = true;\n  }\n\n  function onUpgrade(res, socket, head) {\n    // Hacky.\n    process.nextTick(function() {\n      onConnect(res, socket, head);\n    });\n  }\n\n  function onConnect(res, socket, head) {\n    connectReq.removeAllListeners();\n    socket.removeAllListeners();\n\n    if (res.statusCode !== 200) {\n      debug('tunneling socket could not be established, statusCode=%d',\n        res.statusCode);\n      socket.destroy();\n      var error = new Error('tunneling socket could not be established, ' +\n        'statusCode=' + res.statusCode);\n      error.code = 'ECONNRESET';\n      options.request.emit('error', error);\n      self.removeSocket(placeholder);\n      return;\n    }\n    if (head.length > 0) {\n      debug('got illegal response body from proxy');\n      socket.destroy();\n      var error = new Error('got illegal response body from proxy');\n      error.code = 'ECONNRESET';\n      options.request.emit('error', error);\n      self.removeSocket(placeholder);\n      return;\n    }\n    debug('tunneling connection has established');\n    self.sockets[self.sockets.indexOf(placeholder)] = socket;\n    return cb(socket);\n  }\n\n  function onError(cause) {\n    connectReq.removeAllListeners();\n\n    debug('tunneling socket could not be established, cause=%s\\n',\n          cause.message, cause.stack);\n    var error = new Error('tunneling socket could not be established, ' +\n                          'cause=' + cause.message);\n    error.code = 'ECONNRESET';\n    options.request.emit('error', error);\n    self.removeSocket(placeholder);\n  }\n};\n\nTunnelingAgent.prototype.removeSocket = function removeSocket(socket) {\n  var pos = this.sockets.indexOf(socket)\n  if (pos === -1) {\n    return;\n  }\n  this.sockets.splice(pos, 1);\n\n  var pending = this.requests.shift();\n  if (pending) {\n    // If we have pending requests and a socket gets closed a new one\n    // needs to be created to take over in the pool for the one that closed.\n    this.createSocket(pending, function(socket) {\n      pending.request.onSocket(socket);\n    });\n  }\n};\n\nfunction createSecureSocket(options, cb) {\n  var self = this;\n  TunnelingAgent.prototype.createSocket.call(self, options, function(socket) {\n    var hostHeader = options.request.getHeader('host');\n    var tlsOptions = mergeOptions({}, self.options, {\n      socket: socket,\n      servername: hostHeader ? hostHeader.replace(/:.*$/, '') : options.host\n    });\n\n    // 0 is dummy port for v0.6\n    var secureSocket = tls.connect(0, tlsOptions);\n    self.sockets[self.sockets.indexOf(socket)] = secureSocket;\n    cb(secureSocket);\n  });\n}\n\n\nfunction toOptions(host, port, localAddress) {\n  if (typeof host === 'string') { // since v0.10\n    return {\n      host: host,\n      port: port,\n      localAddress: localAddress\n    };\n  }\n  return host; // for v0.11 or later\n}\n\nfunction mergeOptions(target) {\n  for (var i = 1, len = arguments.length; i < len; ++i) {\n    var overrides = arguments[i];\n    if (typeof overrides === 'object') {\n      var keys = Object.keys(overrides);\n      for (var j = 0, keyLen = keys.length; j < keyLen; ++j) {\n        var k = keys[j];\n        if (overrides[k] !== undefined) {\n          target[k] = overrides[k];\n        }\n      }\n    }\n  }\n  return target;\n}\n\n\nvar debug;\nif (process.env.NODE_DEBUG && /\\btunnel\\b/.test(process.env.NODE_DEBUG)) {\n  debug = function() {\n    var args = Array.prototype.slice.call(arguments);\n    if (typeof args[0] === 'string') {\n      args[0] = 'TUNNEL: ' + args[0];\n    } else {\n      args.unshift('TUNNEL:');\n    }\n    console.error.apply(console, args);\n  }\n} else {\n  debug = function() {};\n}\nexports.debug = debug; // for test\n","\"use strict\";\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\nObject.defineProperty(exports, \"v1\", {\n  enumerable: true,\n  get: function () {\n    return _v.default;\n  }\n});\nObject.defineProperty(exports, \"v3\", {\n  enumerable: true,\n  get: function () {\n    return _v2.default;\n  }\n});\nObject.defineProperty(exports, \"v4\", {\n  enumerable: true,\n  get: function () {\n    return _v3.default;\n  }\n});\nObject.defineProperty(exports, \"v5\", {\n  enumerable: true,\n  get: function () {\n    return _v4.default;\n  }\n});\nObject.defineProperty(exports, \"NIL\", {\n  enumerable: true,\n  get: function () {\n    return _nil.default;\n  }\n});\nObject.defineProperty(exports, \"version\", {\n  enumerable: true,\n  get: function () {\n    return _version.default;\n  }\n});\nObject.defineProperty(exports, \"validate\", {\n  enumerable: true,\n  get: function () {\n    return _validate.default;\n  }\n});\nObject.defineProperty(exports, \"stringify\", {\n  enumerable: true,\n  get: function () {\n    return _stringify.default;\n  }\n});\nObject.defineProperty(exports, \"parse\", {\n  enumerable: true,\n  get: function () {\n    return _parse.default;\n  }\n});\n\nvar _v = _interopRequireDefault(require(\"./v1.js\"));\n\nvar _v2 = _interopRequireDefault(require(\"./v3.js\"));\n\nvar _v3 = _interopRequireDefault(require(\"./v4.js\"));\n\nvar _v4 = _interopRequireDefault(require(\"./v5.js\"));\n\nvar _nil = _interopRequireDefault(require(\"./nil.js\"));\n\nvar _version = _interopRequireDefault(require(\"./version.js\"));\n\nvar _validate = _interopRequireDefault(require(\"./validate.js\"));\n\nvar _stringify = _interopRequireDefault(require(\"./stringify.js\"));\n\nvar _parse = _interopRequireDefault(require(\"./parse.js\"));\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }","\"use strict\";\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\nexports.default = void 0;\n\nvar _crypto = _interopRequireDefault(require(\"crypto\"));\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\nfunction md5(bytes) {\n  if (Array.isArray(bytes)) {\n    bytes = Buffer.from(bytes);\n  } else if (typeof bytes === 'string') {\n    bytes = Buffer.from(bytes, 'utf8');\n  }\n\n  return _crypto.default.createHash('md5').update(bytes).digest();\n}\n\nvar _default = md5;\nexports.default = _default;","\"use strict\";\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\nexports.default = void 0;\nvar _default = '00000000-0000-0000-0000-000000000000';\nexports.default = _default;","\"use strict\";\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\nexports.default = void 0;\n\nvar _validate = _interopRequireDefault(require(\"./validate.js\"));\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\nfunction parse(uuid) {\n  if (!(0, _validate.default)(uuid)) {\n    throw TypeError('Invalid UUID');\n  }\n\n  let v;\n  const arr = new Uint8Array(16); // Parse ########-....-....-....-............\n\n  arr[0] = (v = parseInt(uuid.slice(0, 8), 16)) >>> 24;\n  arr[1] = v >>> 16 & 0xff;\n  arr[2] = v >>> 8 & 0xff;\n  arr[3] = v & 0xff; // Parse ........-####-....-....-............\n\n  arr[4] = (v = parseInt(uuid.slice(9, 13), 16)) >>> 8;\n  arr[5] = v & 0xff; // Parse ........-....-####-....-............\n\n  arr[6] = (v = parseInt(uuid.slice(14, 18), 16)) >>> 8;\n  arr[7] = v & 0xff; // Parse ........-....-....-####-............\n\n  arr[8] = (v = parseInt(uuid.slice(19, 23), 16)) >>> 8;\n  arr[9] = v & 0xff; // Parse ........-....-....-....-############\n  // (Use \"/\" to avoid 32-bit truncation when bit-shifting high-order bytes)\n\n  arr[10] = (v = parseInt(uuid.slice(24, 36), 16)) / 0x10000000000 & 0xff;\n  arr[11] = v / 0x100000000 & 0xff;\n  arr[12] = v >>> 24 & 0xff;\n  arr[13] = v >>> 16 & 0xff;\n  arr[14] = v >>> 8 & 0xff;\n  arr[15] = v & 0xff;\n  return arr;\n}\n\nvar _default = parse;\nexports.default = _default;","\"use strict\";\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\nexports.default = void 0;\nvar _default = /^(?:[0-9a-f]{8}-[0-9a-f]{4}-[1-5][0-9a-f]{3}-[89ab][0-9a-f]{3}-[0-9a-f]{12}|00000000-0000-0000-0000-000000000000)$/i;\nexports.default = _default;","\"use strict\";\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\nexports.default = rng;\n\nvar _crypto = _interopRequireDefault(require(\"crypto\"));\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\nconst rnds8Pool = new Uint8Array(256); // # of random values to pre-allocate\n\nlet poolPtr = rnds8Pool.length;\n\nfunction rng() {\n  if (poolPtr > rnds8Pool.length - 16) {\n    _crypto.default.randomFillSync(rnds8Pool);\n\n    poolPtr = 0;\n  }\n\n  return rnds8Pool.slice(poolPtr, poolPtr += 16);\n}","\"use strict\";\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\nexports.default = void 0;\n\nvar _crypto = _interopRequireDefault(require(\"crypto\"));\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\nfunction sha1(bytes) {\n  if (Array.isArray(bytes)) {\n    bytes = Buffer.from(bytes);\n  } else if (typeof bytes === 'string') {\n    bytes = Buffer.from(bytes, 'utf8');\n  }\n\n  return _crypto.default.createHash('sha1').update(bytes).digest();\n}\n\nvar _default = sha1;\nexports.default = _default;","\"use strict\";\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\nexports.default = void 0;\n\nvar _validate = _interopRequireDefault(require(\"./validate.js\"));\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\n/**\n * Convert array of 16 byte values to UUID string format of the form:\n * XXXXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXXXX\n */\nconst byteToHex = [];\n\nfor (let i = 0; i < 256; ++i) {\n  byteToHex.push((i + 0x100).toString(16).substr(1));\n}\n\nfunction stringify(arr, offset = 0) {\n  // Note: Be careful editing this code!  It's been tuned for performance\n  // and works in ways you may not expect. See https://github.com/uuidjs/uuid/pull/434\n  const uuid = (byteToHex[arr[offset + 0]] + byteToHex[arr[offset + 1]] + byteToHex[arr[offset + 2]] + byteToHex[arr[offset + 3]] + '-' + byteToHex[arr[offset + 4]] + byteToHex[arr[offset + 5]] + '-' + byteToHex[arr[offset + 6]] + byteToHex[arr[offset + 7]] + '-' + byteToHex[arr[offset + 8]] + byteToHex[arr[offset + 9]] + '-' + byteToHex[arr[offset + 10]] + byteToHex[arr[offset + 11]] + byteToHex[arr[offset + 12]] + byteToHex[arr[offset + 13]] + byteToHex[arr[offset + 14]] + byteToHex[arr[offset + 15]]).toLowerCase(); // Consistency check for valid UUID.  If this throws, it's likely due to one\n  // of the following:\n  // - One or more input array values don't map to a hex octet (leading to\n  // \"undefined\" in the uuid)\n  // - Invalid input values for the RFC `version` or `variant` fields\n\n  if (!(0, _validate.default)(uuid)) {\n    throw TypeError('Stringified UUID is invalid');\n  }\n\n  return uuid;\n}\n\nvar _default = stringify;\nexports.default = _default;","\"use strict\";\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\nexports.default = void 0;\n\nvar _rng = _interopRequireDefault(require(\"./rng.js\"));\n\nvar _stringify = _interopRequireDefault(require(\"./stringify.js\"));\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\n// **`v1()` - Generate time-based UUID**\n//\n// Inspired by https://github.com/LiosK/UUID.js\n// and http://docs.python.org/library/uuid.html\nlet _nodeId;\n\nlet _clockseq; // Previous uuid creation time\n\n\nlet _lastMSecs = 0;\nlet _lastNSecs = 0; // See https://github.com/uuidjs/uuid for API details\n\nfunction v1(options, buf, offset) {\n  let i = buf && offset || 0;\n  const b = buf || new Array(16);\n  options = options || {};\n  let node = options.node || _nodeId;\n  let clockseq = options.clockseq !== undefined ? options.clockseq : _clockseq; // node and clockseq need to be initialized to random values if they're not\n  // specified.  We do this lazily to minimize issues related to insufficient\n  // system entropy.  See #189\n\n  if (node == null || clockseq == null) {\n    const seedBytes = options.random || (options.rng || _rng.default)();\n\n    if (node == null) {\n      // Per 4.5, create and 48-bit node id, (47 random bits + multicast bit = 1)\n      node = _nodeId = [seedBytes[0] | 0x01, seedBytes[1], seedBytes[2], seedBytes[3], seedBytes[4], seedBytes[5]];\n    }\n\n    if (clockseq == null) {\n      // Per 4.2.2, randomize (14 bit) clockseq\n      clockseq = _clockseq = (seedBytes[6] << 8 | seedBytes[7]) & 0x3fff;\n    }\n  } // UUID timestamps are 100 nano-second units since the Gregorian epoch,\n  // (1582-10-15 00:00).  JSNumbers aren't precise enough for this, so\n  // time is handled internally as 'msecs' (integer milliseconds) and 'nsecs'\n  // (100-nanoseconds offset from msecs) since unix epoch, 1970-01-01 00:00.\n\n\n  let msecs = options.msecs !== undefined ? options.msecs : Date.now(); // Per 4.2.1.2, use count of uuid's generated during the current clock\n  // cycle to simulate higher resolution clock\n\n  let nsecs = options.nsecs !== undefined ? options.nsecs : _lastNSecs + 1; // Time since last uuid creation (in msecs)\n\n  const dt = msecs - _lastMSecs + (nsecs - _lastNSecs) / 10000; // Per 4.2.1.2, Bump clockseq on clock regression\n\n  if (dt < 0 && options.clockseq === undefined) {\n    clockseq = clockseq + 1 & 0x3fff;\n  } // Reset nsecs if clock regresses (new clockseq) or we've moved onto a new\n  // time interval\n\n\n  if ((dt < 0 || msecs > _lastMSecs) && options.nsecs === undefined) {\n    nsecs = 0;\n  } // Per 4.2.1.2 Throw error if too many uuids are requested\n\n\n  if (nsecs >= 10000) {\n    throw new Error(\"uuid.v1(): Can't create more than 10M uuids/sec\");\n  }\n\n  _lastMSecs = msecs;\n  _lastNSecs = nsecs;\n  _clockseq = clockseq; // Per 4.1.4 - Convert from unix epoch to Gregorian epoch\n\n  msecs += 12219292800000; // `time_low`\n\n  const tl = ((msecs & 0xfffffff) * 10000 + nsecs) % 0x100000000;\n  b[i++] = tl >>> 24 & 0xff;\n  b[i++] = tl >>> 16 & 0xff;\n  b[i++] = tl >>> 8 & 0xff;\n  b[i++] = tl & 0xff; // `time_mid`\n\n  const tmh = msecs / 0x100000000 * 10000 & 0xfffffff;\n  b[i++] = tmh >>> 8 & 0xff;\n  b[i++] = tmh & 0xff; // `time_high_and_version`\n\n  b[i++] = tmh >>> 24 & 0xf | 0x10; // include version\n\n  b[i++] = tmh >>> 16 & 0xff; // `clock_seq_hi_and_reserved` (Per 4.2.2 - include variant)\n\n  b[i++] = clockseq >>> 8 | 0x80; // `clock_seq_low`\n\n  b[i++] = clockseq & 0xff; // `node`\n\n  for (let n = 0; n < 6; ++n) {\n    b[i + n] = node[n];\n  }\n\n  return buf || (0, _stringify.default)(b);\n}\n\nvar _default = v1;\nexports.default = _default;","\"use strict\";\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\nexports.default = void 0;\n\nvar _v = _interopRequireDefault(require(\"./v35.js\"));\n\nvar _md = _interopRequireDefault(require(\"./md5.js\"));\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\nconst v3 = (0, _v.default)('v3', 0x30, _md.default);\nvar _default = v3;\nexports.default = _default;","\"use strict\";\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\nexports.default = _default;\nexports.URL = exports.DNS = void 0;\n\nvar _stringify = _interopRequireDefault(require(\"./stringify.js\"));\n\nvar _parse = _interopRequireDefault(require(\"./parse.js\"));\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\nfunction stringToBytes(str) {\n  str = unescape(encodeURIComponent(str)); // UTF8 escape\n\n  const bytes = [];\n\n  for (let i = 0; i < str.length; ++i) {\n    bytes.push(str.charCodeAt(i));\n  }\n\n  return bytes;\n}\n\nconst DNS = '6ba7b810-9dad-11d1-80b4-00c04fd430c8';\nexports.DNS = DNS;\nconst URL = '6ba7b811-9dad-11d1-80b4-00c04fd430c8';\nexports.URL = URL;\n\nfunction _default(name, version, hashfunc) {\n  function generateUUID(value, namespace, buf, offset) {\n    if (typeof value === 'string') {\n      value = stringToBytes(value);\n    }\n\n    if (typeof namespace === 'string') {\n      namespace = (0, _parse.default)(namespace);\n    }\n\n    if (namespace.length !== 16) {\n      throw TypeError('Namespace must be array-like (16 iterable integer values, 0-255)');\n    } // Compute hash of namespace and value, Per 4.3\n    // Future: Use spread syntax when supported on all platforms, e.g. `bytes =\n    // hashfunc([...namespace, ... value])`\n\n\n    let bytes = new Uint8Array(16 + value.length);\n    bytes.set(namespace);\n    bytes.set(value, namespace.length);\n    bytes = hashfunc(bytes);\n    bytes[6] = bytes[6] & 0x0f | version;\n    bytes[8] = bytes[8] & 0x3f | 0x80;\n\n    if (buf) {\n      offset = offset || 0;\n\n      for (let i = 0; i < 16; ++i) {\n        buf[offset + i] = bytes[i];\n      }\n\n      return buf;\n    }\n\n    return (0, _stringify.default)(bytes);\n  } // Function#name is not settable on some platforms (#270)\n\n\n  try {\n    generateUUID.name = name; // eslint-disable-next-line no-empty\n  } catch (err) {} // For CommonJS default export support\n\n\n  generateUUID.DNS = DNS;\n  generateUUID.URL = URL;\n  return generateUUID;\n}","\"use strict\";\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\nexports.default = void 0;\n\nvar _rng = _interopRequireDefault(require(\"./rng.js\"));\n\nvar _stringify = _interopRequireDefault(require(\"./stringify.js\"));\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\nfunction v4(options, buf, offset) {\n  options = options || {};\n\n  const rnds = options.random || (options.rng || _rng.default)(); // Per 4.4, set bits for version and `clock_seq_hi_and_reserved`\n\n\n  rnds[6] = rnds[6] & 0x0f | 0x40;\n  rnds[8] = rnds[8] & 0x3f | 0x80; // Copy bytes to buffer, if provided\n\n  if (buf) {\n    offset = offset || 0;\n\n    for (let i = 0; i < 16; ++i) {\n      buf[offset + i] = rnds[i];\n    }\n\n    return buf;\n  }\n\n  return (0, _stringify.default)(rnds);\n}\n\nvar _default = v4;\nexports.default = _default;","\"use strict\";\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\nexports.default = void 0;\n\nvar _v = _interopRequireDefault(require(\"./v35.js\"));\n\nvar _sha = _interopRequireDefault(require(\"./sha1.js\"));\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\nconst v5 = (0, _v.default)('v5', 0x50, _sha.default);\nvar _default = v5;\nexports.default = _default;","\"use strict\";\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\nexports.default = void 0;\n\nvar _regex = _interopRequireDefault(require(\"./regex.js\"));\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\nfunction validate(uuid) {\n  return typeof uuid === 'string' && _regex.default.test(uuid);\n}\n\nvar _default = validate;\nexports.default = _default;","\"use strict\";\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\nexports.default = void 0;\n\nvar _validate = _interopRequireDefault(require(\"./validate.js\"));\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\nfunction version(uuid) {\n  if (!(0, _validate.default)(uuid)) {\n    throw TypeError('Invalid UUID');\n  }\n\n  return parseInt(uuid.substr(14, 1), 16);\n}\n\nvar _default = version;\nexports.default = _default;","\"use strict\";\n\nvar conversions = {};\nmodule.exports = conversions;\n\nfunction sign(x) {\n    return x < 0 ? -1 : 1;\n}\n\nfunction evenRound(x) {\n    // Round x to the nearest integer, choosing the even integer if it lies halfway between two.\n    if ((x % 1) === 0.5 && (x & 1) === 0) { // [even number].5; round down (i.e. floor)\n        return Math.floor(x);\n    } else {\n        return Math.round(x);\n    }\n}\n\nfunction createNumberConversion(bitLength, typeOpts) {\n    if (!typeOpts.unsigned) {\n        --bitLength;\n    }\n    const lowerBound = typeOpts.unsigned ? 0 : -Math.pow(2, bitLength);\n    const upperBound = Math.pow(2, bitLength) - 1;\n\n    const moduloVal = typeOpts.moduloBitLength ? Math.pow(2, typeOpts.moduloBitLength) : Math.pow(2, bitLength);\n    const moduloBound = typeOpts.moduloBitLength ? Math.pow(2, typeOpts.moduloBitLength - 1) : Math.pow(2, bitLength - 1);\n\n    return function(V, opts) {\n        if (!opts) opts = {};\n\n        let x = +V;\n\n        if (opts.enforceRange) {\n            if (!Number.isFinite(x)) {\n                throw new TypeError(\"Argument is not a finite number\");\n            }\n\n            x = sign(x) * Math.floor(Math.abs(x));\n            if (x < lowerBound || x > upperBound) {\n                throw new TypeError(\"Argument is not in byte range\");\n            }\n\n            return x;\n        }\n\n        if (!isNaN(x) && opts.clamp) {\n            x = evenRound(x);\n\n            if (x < lowerBound) x = lowerBound;\n            if (x > upperBound) x = upperBound;\n            return x;\n        }\n\n        if (!Number.isFinite(x) || x === 0) {\n            return 0;\n        }\n\n        x = sign(x) * Math.floor(Math.abs(x));\n        x = x % moduloVal;\n\n        if (!typeOpts.unsigned && x >= moduloBound) {\n            return x - moduloVal;\n        } else if (typeOpts.unsigned) {\n            if (x < 0) {\n              x += moduloVal;\n            } else if (x === -0) { // don't return negative zero\n              return 0;\n            }\n        }\n\n        return x;\n    }\n}\n\nconversions[\"void\"] = function () {\n    return undefined;\n};\n\nconversions[\"boolean\"] = function (val) {\n    return !!val;\n};\n\nconversions[\"byte\"] = createNumberConversion(8, { unsigned: false });\nconversions[\"octet\"] = createNumberConversion(8, { unsigned: true });\n\nconversions[\"short\"] = createNumberConversion(16, { unsigned: false });\nconversions[\"unsigned short\"] = createNumberConversion(16, { unsigned: true });\n\nconversions[\"long\"] = createNumberConversion(32, { unsigned: false });\nconversions[\"unsigned long\"] = createNumberConversion(32, { unsigned: true });\n\nconversions[\"long long\"] = createNumberConversion(32, { unsigned: false, moduloBitLength: 64 });\nconversions[\"unsigned long long\"] = createNumberConversion(32, { unsigned: true, moduloBitLength: 64 });\n\nconversions[\"double\"] = function (V) {\n    const x = +V;\n\n    if (!Number.isFinite(x)) {\n        throw new TypeError(\"Argument is not a finite floating-point value\");\n    }\n\n    return x;\n};\n\nconversions[\"unrestricted double\"] = function (V) {\n    const x = +V;\n\n    if (isNaN(x)) {\n        throw new TypeError(\"Argument is NaN\");\n    }\n\n    return x;\n};\n\n// not quite valid, but good enough for JS\nconversions[\"float\"] = conversions[\"double\"];\nconversions[\"unrestricted float\"] = conversions[\"unrestricted double\"];\n\nconversions[\"DOMString\"] = function (V, opts) {\n    if (!opts) opts = {};\n\n    if (opts.treatNullAsEmptyString && V === null) {\n        return \"\";\n    }\n\n    return String(V);\n};\n\nconversions[\"ByteString\"] = function (V, opts) {\n    const x = String(V);\n    let c = undefined;\n    for (let i = 0; (c = x.codePointAt(i)) !== undefined; ++i) {\n        if (c > 255) {\n            throw new TypeError(\"Argument is not a valid bytestring\");\n        }\n    }\n\n    return x;\n};\n\nconversions[\"USVString\"] = function (V) {\n    const S = String(V);\n    const n = S.length;\n    const U = [];\n    for (let i = 0; i < n; ++i) {\n        const c = S.charCodeAt(i);\n        if (c < 0xD800 || c > 0xDFFF) {\n            U.push(String.fromCodePoint(c));\n        } else if (0xDC00 <= c && c <= 0xDFFF) {\n            U.push(String.fromCodePoint(0xFFFD));\n        } else {\n            if (i === n - 1) {\n                U.push(String.fromCodePoint(0xFFFD));\n            } else {\n                const d = S.charCodeAt(i + 1);\n                if (0xDC00 <= d && d <= 0xDFFF) {\n                    const a = c & 0x3FF;\n                    const b = d & 0x3FF;\n                    U.push(String.fromCodePoint((2 << 15) + (2 << 9) * a + b));\n                    ++i;\n                } else {\n                    U.push(String.fromCodePoint(0xFFFD));\n                }\n            }\n        }\n    }\n\n    return U.join('');\n};\n\nconversions[\"Date\"] = function (V, opts) {\n    if (!(V instanceof Date)) {\n        throw new TypeError(\"Argument is not a Date object\");\n    }\n    if (isNaN(V)) {\n        return undefined;\n    }\n\n    return V;\n};\n\nconversions[\"RegExp\"] = function (V, opts) {\n    if (!(V instanceof RegExp)) {\n        V = new RegExp(V);\n    }\n\n    return V;\n};\n","\"use strict\";\nconst usm = require(\"./url-state-machine\");\n\nexports.implementation = class URLImpl {\n  constructor(constructorArgs) {\n    const url = constructorArgs[0];\n    const base = constructorArgs[1];\n\n    let parsedBase = null;\n    if (base !== undefined) {\n      parsedBase = usm.basicURLParse(base);\n      if (parsedBase === \"failure\") {\n        throw new TypeError(\"Invalid base URL\");\n      }\n    }\n\n    const parsedURL = usm.basicURLParse(url, { baseURL: parsedBase });\n    if (parsedURL === \"failure\") {\n      throw new TypeError(\"Invalid URL\");\n    }\n\n    this._url = parsedURL;\n\n    // TODO: query stuff\n  }\n\n  get href() {\n    return usm.serializeURL(this._url);\n  }\n\n  set href(v) {\n    const parsedURL = usm.basicURLParse(v);\n    if (parsedURL === \"failure\") {\n      throw new TypeError(\"Invalid URL\");\n    }\n\n    this._url = parsedURL;\n  }\n\n  get origin() {\n    return usm.serializeURLOrigin(this._url);\n  }\n\n  get protocol() {\n    return this._url.scheme + \":\";\n  }\n\n  set protocol(v) {\n    usm.basicURLParse(v + \":\", { url: this._url, stateOverride: \"scheme start\" });\n  }\n\n  get username() {\n    return this._url.username;\n  }\n\n  set username(v) {\n    if (usm.cannotHaveAUsernamePasswordPort(this._url)) {\n      return;\n    }\n\n    usm.setTheUsername(this._url, v);\n  }\n\n  get password() {\n    return this._url.password;\n  }\n\n  set password(v) {\n    if (usm.cannotHaveAUsernamePasswordPort(this._url)) {\n      return;\n    }\n\n    usm.setThePassword(this._url, v);\n  }\n\n  get host() {\n    const url = this._url;\n\n    if (url.host === null) {\n      return \"\";\n    }\n\n    if (url.port === null) {\n      return usm.serializeHost(url.host);\n    }\n\n    return usm.serializeHost(url.host) + \":\" + usm.serializeInteger(url.port);\n  }\n\n  set host(v) {\n    if (this._url.cannotBeABaseURL) {\n      return;\n    }\n\n    usm.basicURLParse(v, { url: this._url, stateOverride: \"host\" });\n  }\n\n  get hostname() {\n    if (this._url.host === null) {\n      return \"\";\n    }\n\n    return usm.serializeHost(this._url.host);\n  }\n\n  set hostname(v) {\n    if (this._url.cannotBeABaseURL) {\n      return;\n    }\n\n    usm.basicURLParse(v, { url: this._url, stateOverride: \"hostname\" });\n  }\n\n  get port() {\n    if (this._url.port === null) {\n      return \"\";\n    }\n\n    return usm.serializeInteger(this._url.port);\n  }\n\n  set port(v) {\n    if (usm.cannotHaveAUsernamePasswordPort(this._url)) {\n      return;\n    }\n\n    if (v === \"\") {\n      this._url.port = null;\n    } else {\n      usm.basicURLParse(v, { url: this._url, stateOverride: \"port\" });\n    }\n  }\n\n  get pathname() {\n    if (this._url.cannotBeABaseURL) {\n      return this._url.path[0];\n    }\n\n    if (this._url.path.length === 0) {\n      return \"\";\n    }\n\n    return \"/\" + this._url.path.join(\"/\");\n  }\n\n  set pathname(v) {\n    if (this._url.cannotBeABaseURL) {\n      return;\n    }\n\n    this._url.path = [];\n    usm.basicURLParse(v, { url: this._url, stateOverride: \"path start\" });\n  }\n\n  get search() {\n    if (this._url.query === null || this._url.query === \"\") {\n      return \"\";\n    }\n\n    return \"?\" + this._url.query;\n  }\n\n  set search(v) {\n    // TODO: query stuff\n\n    const url = this._url;\n\n    if (v === \"\") {\n      url.query = null;\n      return;\n    }\n\n    const input = v[0] === \"?\" ? v.substring(1) : v;\n    url.query = \"\";\n    usm.basicURLParse(input, { url, stateOverride: \"query\" });\n  }\n\n  get hash() {\n    if (this._url.fragment === null || this._url.fragment === \"\") {\n      return \"\";\n    }\n\n    return \"#\" + this._url.fragment;\n  }\n\n  set hash(v) {\n    if (v === \"\") {\n      this._url.fragment = null;\n      return;\n    }\n\n    const input = v[0] === \"#\" ? v.substring(1) : v;\n    this._url.fragment = \"\";\n    usm.basicURLParse(input, { url: this._url, stateOverride: \"fragment\" });\n  }\n\n  toJSON() {\n    return this.href;\n  }\n};\n","\"use strict\";\n\nconst conversions = require(\"webidl-conversions\");\nconst utils = require(\"./utils.js\");\nconst Impl = require(\".//URL-impl.js\");\n\nconst impl = utils.implSymbol;\n\nfunction URL(url) {\n  if (!this || this[impl] || !(this instanceof URL)) {\n    throw new TypeError(\"Failed to construct 'URL': Please use the 'new' operator, this DOM object constructor cannot be called as a function.\");\n  }\n  if (arguments.length < 1) {\n    throw new TypeError(\"Failed to construct 'URL': 1 argument required, but only \" + arguments.length + \" present.\");\n  }\n  const args = [];\n  for (let i = 0; i < arguments.length && i < 2; ++i) {\n    args[i] = arguments[i];\n  }\n  args[0] = conversions[\"USVString\"](args[0]);\n  if (args[1] !== undefined) {\n  args[1] = conversions[\"USVString\"](args[1]);\n  }\n\n  module.exports.setup(this, args);\n}\n\nURL.prototype.toJSON = function toJSON() {\n  if (!this || !module.exports.is(this)) {\n    throw new TypeError(\"Illegal invocation\");\n  }\n  const args = [];\n  for (let i = 0; i < arguments.length && i < 0; ++i) {\n    args[i] = arguments[i];\n  }\n  return this[impl].toJSON.apply(this[impl], args);\n};\nObject.defineProperty(URL.prototype, \"href\", {\n  get() {\n    return this[impl].href;\n  },\n  set(V) {\n    V = conversions[\"USVString\"](V);\n    this[impl].href = V;\n  },\n  enumerable: true,\n  configurable: true\n});\n\nURL.prototype.toString = function () {\n  if (!this || !module.exports.is(this)) {\n    throw new TypeError(\"Illegal invocation\");\n  }\n  return this.href;\n};\n\nObject.defineProperty(URL.prototype, \"origin\", {\n  get() {\n    return this[impl].origin;\n  },\n  enumerable: true,\n  configurable: true\n});\n\nObject.defineProperty(URL.prototype, \"protocol\", {\n  get() {\n    return this[impl].protocol;\n  },\n  set(V) {\n    V = conversions[\"USVString\"](V);\n    this[impl].protocol = V;\n  },\n  enumerable: true,\n  configurable: true\n});\n\nObject.defineProperty(URL.prototype, \"username\", {\n  get() {\n    return this[impl].username;\n  },\n  set(V) {\n    V = conversions[\"USVString\"](V);\n    this[impl].username = V;\n  },\n  enumerable: true,\n  configurable: true\n});\n\nObject.defineProperty(URL.prototype, \"password\", {\n  get() {\n    return this[impl].password;\n  },\n  set(V) {\n    V = conversions[\"USVString\"](V);\n    this[impl].password = V;\n  },\n  enumerable: true,\n  configurable: true\n});\n\nObject.defineProperty(URL.prototype, \"host\", {\n  get() {\n    return this[impl].host;\n  },\n  set(V) {\n    V = conversions[\"USVString\"](V);\n    this[impl].host = V;\n  },\n  enumerable: true,\n  configurable: true\n});\n\nObject.defineProperty(URL.prototype, \"hostname\", {\n  get() {\n    return this[impl].hostname;\n  },\n  set(V) {\n    V = conversions[\"USVString\"](V);\n    this[impl].hostname = V;\n  },\n  enumerable: true,\n  configurable: true\n});\n\nObject.defineProperty(URL.prototype, \"port\", {\n  get() {\n    return this[impl].port;\n  },\n  set(V) {\n    V = conversions[\"USVString\"](V);\n    this[impl].port = V;\n  },\n  enumerable: true,\n  configurable: true\n});\n\nObject.defineProperty(URL.prototype, \"pathname\", {\n  get() {\n    return this[impl].pathname;\n  },\n  set(V) {\n    V = conversions[\"USVString\"](V);\n    this[impl].pathname = V;\n  },\n  enumerable: true,\n  configurable: true\n});\n\nObject.defineProperty(URL.prototype, \"search\", {\n  get() {\n    return this[impl].search;\n  },\n  set(V) {\n    V = conversions[\"USVString\"](V);\n    this[impl].search = V;\n  },\n  enumerable: true,\n  configurable: true\n});\n\nObject.defineProperty(URL.prototype, \"hash\", {\n  get() {\n    return this[impl].hash;\n  },\n  set(V) {\n    V = conversions[\"USVString\"](V);\n    this[impl].hash = V;\n  },\n  enumerable: true,\n  configurable: true\n});\n\n\nmodule.exports = {\n  is(obj) {\n    return !!obj && obj[impl] instanceof Impl.implementation;\n  },\n  create(constructorArgs, privateData) {\n    let obj = Object.create(URL.prototype);\n    this.setup(obj, constructorArgs, privateData);\n    return obj;\n  },\n  setup(obj, constructorArgs, privateData) {\n    if (!privateData) privateData = {};\n    privateData.wrapper = obj;\n\n    obj[impl] = new Impl.implementation(constructorArgs, privateData);\n    obj[impl][utils.wrapperSymbol] = obj;\n  },\n  interface: URL,\n  expose: {\n    Window: { URL: URL },\n    Worker: { URL: URL }\n  }\n};\n\n","\"use strict\";\n\nexports.URL = require(\"./URL\").interface;\nexports.serializeURL = require(\"./url-state-machine\").serializeURL;\nexports.serializeURLOrigin = require(\"./url-state-machine\").serializeURLOrigin;\nexports.basicURLParse = require(\"./url-state-machine\").basicURLParse;\nexports.setTheUsername = require(\"./url-state-machine\").setTheUsername;\nexports.setThePassword = require(\"./url-state-machine\").setThePassword;\nexports.serializeHost = require(\"./url-state-machine\").serializeHost;\nexports.serializeInteger = require(\"./url-state-machine\").serializeInteger;\nexports.parseURL = require(\"./url-state-machine\").parseURL;\n","\"use strict\";\r\nconst punycode = require(\"punycode\");\r\nconst tr46 = require(\"tr46\");\r\n\r\nconst specialSchemes = {\r\n  ftp: 21,\r\n  file: null,\r\n  gopher: 70,\r\n  http: 80,\r\n  https: 443,\r\n  ws: 80,\r\n  wss: 443\r\n};\r\n\r\nconst failure = Symbol(\"failure\");\r\n\r\nfunction countSymbols(str) {\r\n  return punycode.ucs2.decode(str).length;\r\n}\r\n\r\nfunction at(input, idx) {\r\n  const c = input[idx];\r\n  return isNaN(c) ? undefined : String.fromCodePoint(c);\r\n}\r\n\r\nfunction isASCIIDigit(c) {\r\n  return c >= 0x30 && c <= 0x39;\r\n}\r\n\r\nfunction isASCIIAlpha(c) {\r\n  return (c >= 0x41 && c <= 0x5A) || (c >= 0x61 && c <= 0x7A);\r\n}\r\n\r\nfunction isASCIIAlphanumeric(c) {\r\n  return isASCIIAlpha(c) || isASCIIDigit(c);\r\n}\r\n\r\nfunction isASCIIHex(c) {\r\n  return isASCIIDigit(c) || (c >= 0x41 && c <= 0x46) || (c >= 0x61 && c <= 0x66);\r\n}\r\n\r\nfunction isSingleDot(buffer) {\r\n  return buffer === \".\" || buffer.toLowerCase() === \"%2e\";\r\n}\r\n\r\nfunction isDoubleDot(buffer) {\r\n  buffer = buffer.toLowerCase();\r\n  return buffer === \"..\" || buffer === \"%2e.\" || buffer === \".%2e\" || buffer === \"%2e%2e\";\r\n}\r\n\r\nfunction isWindowsDriveLetterCodePoints(cp1, cp2) {\r\n  return isASCIIAlpha(cp1) && (cp2 === 58 || cp2 === 124);\r\n}\r\n\r\nfunction isWindowsDriveLetterString(string) {\r\n  return string.length === 2 && isASCIIAlpha(string.codePointAt(0)) && (string[1] === \":\" || string[1] === \"|\");\r\n}\r\n\r\nfunction isNormalizedWindowsDriveLetterString(string) {\r\n  return string.length === 2 && isASCIIAlpha(string.codePointAt(0)) && string[1] === \":\";\r\n}\r\n\r\nfunction containsForbiddenHostCodePoint(string) {\r\n  return string.search(/\\u0000|\\u0009|\\u000A|\\u000D|\\u0020|#|%|\\/|:|\\?|@|\\[|\\\\|\\]/) !== -1;\r\n}\r\n\r\nfunction containsForbiddenHostCodePointExcludingPercent(string) {\r\n  return string.search(/\\u0000|\\u0009|\\u000A|\\u000D|\\u0020|#|\\/|:|\\?|@|\\[|\\\\|\\]/) !== -1;\r\n}\r\n\r\nfunction isSpecialScheme(scheme) {\r\n  return specialSchemes[scheme] !== undefined;\r\n}\r\n\r\nfunction isSpecial(url) {\r\n  return isSpecialScheme(url.scheme);\r\n}\r\n\r\nfunction defaultPort(scheme) {\r\n  return specialSchemes[scheme];\r\n}\r\n\r\nfunction percentEncode(c) {\r\n  let hex = c.toString(16).toUpperCase();\r\n  if (hex.length === 1) {\r\n    hex = \"0\" + hex;\r\n  }\r\n\r\n  return \"%\" + hex;\r\n}\r\n\r\nfunction utf8PercentEncode(c) {\r\n  const buf = new Buffer(c);\r\n\r\n  let str = \"\";\r\n\r\n  for (let i = 0; i < buf.length; ++i) {\r\n    str += percentEncode(buf[i]);\r\n  }\r\n\r\n  return str;\r\n}\r\n\r\nfunction utf8PercentDecode(str) {\r\n  const input = new Buffer(str);\r\n  const output = [];\r\n  for (let i = 0; i < input.length; ++i) {\r\n    if (input[i] !== 37) {\r\n      output.push(input[i]);\r\n    } else if (input[i] === 37 && isASCIIHex(input[i + 1]) && isASCIIHex(input[i + 2])) {\r\n      output.push(parseInt(input.slice(i + 1, i + 3).toString(), 16));\r\n      i += 2;\r\n    } else {\r\n      output.push(input[i]);\r\n    }\r\n  }\r\n  return new Buffer(output).toString();\r\n}\r\n\r\nfunction isC0ControlPercentEncode(c) {\r\n  return c <= 0x1F || c > 0x7E;\r\n}\r\n\r\nconst extraPathPercentEncodeSet = new Set([32, 34, 35, 60, 62, 63, 96, 123, 125]);\r\nfunction isPathPercentEncode(c) {\r\n  return isC0ControlPercentEncode(c) || extraPathPercentEncodeSet.has(c);\r\n}\r\n\r\nconst extraUserinfoPercentEncodeSet =\r\n  new Set([47, 58, 59, 61, 64, 91, 92, 93, 94, 124]);\r\nfunction isUserinfoPercentEncode(c) {\r\n  return isPathPercentEncode(c) || extraUserinfoPercentEncodeSet.has(c);\r\n}\r\n\r\nfunction percentEncodeChar(c, encodeSetPredicate) {\r\n  const cStr = String.fromCodePoint(c);\r\n\r\n  if (encodeSetPredicate(c)) {\r\n    return utf8PercentEncode(cStr);\r\n  }\r\n\r\n  return cStr;\r\n}\r\n\r\nfunction parseIPv4Number(input) {\r\n  let R = 10;\r\n\r\n  if (input.length >= 2 && input.charAt(0) === \"0\" && input.charAt(1).toLowerCase() === \"x\") {\r\n    input = input.substring(2);\r\n    R = 16;\r\n  } else if (input.length >= 2 && input.charAt(0) === \"0\") {\r\n    input = input.substring(1);\r\n    R = 8;\r\n  }\r\n\r\n  if (input === \"\") {\r\n    return 0;\r\n  }\r\n\r\n  const regex = R === 10 ? /[^0-9]/ : (R === 16 ? /[^0-9A-Fa-f]/ : /[^0-7]/);\r\n  if (regex.test(input)) {\r\n    return failure;\r\n  }\r\n\r\n  return parseInt(input, R);\r\n}\r\n\r\nfunction parseIPv4(input) {\r\n  const parts = input.split(\".\");\r\n  if (parts[parts.length - 1] === \"\") {\r\n    if (parts.length > 1) {\r\n      parts.pop();\r\n    }\r\n  }\r\n\r\n  if (parts.length > 4) {\r\n    return input;\r\n  }\r\n\r\n  const numbers = [];\r\n  for (const part of parts) {\r\n    if (part === \"\") {\r\n      return input;\r\n    }\r\n    const n = parseIPv4Number(part);\r\n    if (n === failure) {\r\n      return input;\r\n    }\r\n\r\n    numbers.push(n);\r\n  }\r\n\r\n  for (let i = 0; i < numbers.length - 1; ++i) {\r\n    if (numbers[i] > 255) {\r\n      return failure;\r\n    }\r\n  }\r\n  if (numbers[numbers.length - 1] >= Math.pow(256, 5 - numbers.length)) {\r\n    return failure;\r\n  }\r\n\r\n  let ipv4 = numbers.pop();\r\n  let counter = 0;\r\n\r\n  for (const n of numbers) {\r\n    ipv4 += n * Math.pow(256, 3 - counter);\r\n    ++counter;\r\n  }\r\n\r\n  return ipv4;\r\n}\r\n\r\nfunction serializeIPv4(address) {\r\n  let output = \"\";\r\n  let n = address;\r\n\r\n  for (let i = 1; i <= 4; ++i) {\r\n    output = String(n % 256) + output;\r\n    if (i !== 4) {\r\n      output = \".\" + output;\r\n    }\r\n    n = Math.floor(n / 256);\r\n  }\r\n\r\n  return output;\r\n}\r\n\r\nfunction parseIPv6(input) {\r\n  const address = [0, 0, 0, 0, 0, 0, 0, 0];\r\n  let pieceIndex = 0;\r\n  let compress = null;\r\n  let pointer = 0;\r\n\r\n  input = punycode.ucs2.decode(input);\r\n\r\n  if (input[pointer] === 58) {\r\n    if (input[pointer + 1] !== 58) {\r\n      return failure;\r\n    }\r\n\r\n    pointer += 2;\r\n    ++pieceIndex;\r\n    compress = pieceIndex;\r\n  }\r\n\r\n  while (pointer < input.length) {\r\n    if (pieceIndex === 8) {\r\n      return failure;\r\n    }\r\n\r\n    if (input[pointer] === 58) {\r\n      if (compress !== null) {\r\n        return failure;\r\n      }\r\n      ++pointer;\r\n      ++pieceIndex;\r\n      compress = pieceIndex;\r\n      continue;\r\n    }\r\n\r\n    let value = 0;\r\n    let length = 0;\r\n\r\n    while (length < 4 && isASCIIHex(input[pointer])) {\r\n      value = value * 0x10 + parseInt(at(input, pointer), 16);\r\n      ++pointer;\r\n      ++length;\r\n    }\r\n\r\n    if (input[pointer] === 46) {\r\n      if (length === 0) {\r\n        return failure;\r\n      }\r\n\r\n      pointer -= length;\r\n\r\n      if (pieceIndex > 6) {\r\n        return failure;\r\n      }\r\n\r\n      let numbersSeen = 0;\r\n\r\n      while (input[pointer] !== undefined) {\r\n        let ipv4Piece = null;\r\n\r\n        if (numbersSeen > 0) {\r\n          if (input[pointer] === 46 && numbersSeen < 4) {\r\n            ++pointer;\r\n          } else {\r\n            return failure;\r\n          }\r\n        }\r\n\r\n        if (!isASCIIDigit(input[pointer])) {\r\n          return failure;\r\n        }\r\n\r\n        while (isASCIIDigit(input[pointer])) {\r\n          const number = parseInt(at(input, pointer));\r\n          if (ipv4Piece === null) {\r\n            ipv4Piece = number;\r\n          } else if (ipv4Piece === 0) {\r\n            return failure;\r\n          } else {\r\n            ipv4Piece = ipv4Piece * 10 + number;\r\n          }\r\n          if (ipv4Piece > 255) {\r\n            return failure;\r\n          }\r\n          ++pointer;\r\n        }\r\n\r\n        address[pieceIndex] = address[pieceIndex] * 0x100 + ipv4Piece;\r\n\r\n        ++numbersSeen;\r\n\r\n        if (numbersSeen === 2 || numbersSeen === 4) {\r\n          ++pieceIndex;\r\n        }\r\n      }\r\n\r\n      if (numbersSeen !== 4) {\r\n        return failure;\r\n      }\r\n\r\n      break;\r\n    } else if (input[pointer] === 58) {\r\n      ++pointer;\r\n      if (input[pointer] === undefined) {\r\n        return failure;\r\n      }\r\n    } else if (input[pointer] !== undefined) {\r\n      return failure;\r\n    }\r\n\r\n    address[pieceIndex] = value;\r\n    ++pieceIndex;\r\n  }\r\n\r\n  if (compress !== null) {\r\n    let swaps = pieceIndex - compress;\r\n    pieceIndex = 7;\r\n    while (pieceIndex !== 0 && swaps > 0) {\r\n      const temp = address[compress + swaps - 1];\r\n      address[compress + swaps - 1] = address[pieceIndex];\r\n      address[pieceIndex] = temp;\r\n      --pieceIndex;\r\n      --swaps;\r\n    }\r\n  } else if (compress === null && pieceIndex !== 8) {\r\n    return failure;\r\n  }\r\n\r\n  return address;\r\n}\r\n\r\nfunction serializeIPv6(address) {\r\n  let output = \"\";\r\n  const seqResult = findLongestZeroSequence(address);\r\n  const compress = seqResult.idx;\r\n  let ignore0 = false;\r\n\r\n  for (let pieceIndex = 0; pieceIndex <= 7; ++pieceIndex) {\r\n    if (ignore0 && address[pieceIndex] === 0) {\r\n      continue;\r\n    } else if (ignore0) {\r\n      ignore0 = false;\r\n    }\r\n\r\n    if (compress === pieceIndex) {\r\n      const separator = pieceIndex === 0 ? \"::\" : \":\";\r\n      output += separator;\r\n      ignore0 = true;\r\n      continue;\r\n    }\r\n\r\n    output += address[pieceIndex].toString(16);\r\n\r\n    if (pieceIndex !== 7) {\r\n      output += \":\";\r\n    }\r\n  }\r\n\r\n  return output;\r\n}\r\n\r\nfunction parseHost(input, isSpecialArg) {\r\n  if (input[0] === \"[\") {\r\n    if (input[input.length - 1] !== \"]\") {\r\n      return failure;\r\n    }\r\n\r\n    return parseIPv6(input.substring(1, input.length - 1));\r\n  }\r\n\r\n  if (!isSpecialArg) {\r\n    return parseOpaqueHost(input);\r\n  }\r\n\r\n  const domain = utf8PercentDecode(input);\r\n  const asciiDomain = tr46.toASCII(domain, false, tr46.PROCESSING_OPTIONS.NONTRANSITIONAL, false);\r\n  if (asciiDomain === null) {\r\n    return failure;\r\n  }\r\n\r\n  if (containsForbiddenHostCodePoint(asciiDomain)) {\r\n    return failure;\r\n  }\r\n\r\n  const ipv4Host = parseIPv4(asciiDomain);\r\n  if (typeof ipv4Host === \"number\" || ipv4Host === failure) {\r\n    return ipv4Host;\r\n  }\r\n\r\n  return asciiDomain;\r\n}\r\n\r\nfunction parseOpaqueHost(input) {\r\n  if (containsForbiddenHostCodePointExcludingPercent(input)) {\r\n    return failure;\r\n  }\r\n\r\n  let output = \"\";\r\n  const decoded = punycode.ucs2.decode(input);\r\n  for (let i = 0; i < decoded.length; ++i) {\r\n    output += percentEncodeChar(decoded[i], isC0ControlPercentEncode);\r\n  }\r\n  return output;\r\n}\r\n\r\nfunction findLongestZeroSequence(arr) {\r\n  let maxIdx = null;\r\n  let maxLen = 1; // only find elements > 1\r\n  let currStart = null;\r\n  let currLen = 0;\r\n\r\n  for (let i = 0; i < arr.length; ++i) {\r\n    if (arr[i] !== 0) {\r\n      if (currLen > maxLen) {\r\n        maxIdx = currStart;\r\n        maxLen = currLen;\r\n      }\r\n\r\n      currStart = null;\r\n      currLen = 0;\r\n    } else {\r\n      if (currStart === null) {\r\n        currStart = i;\r\n      }\r\n      ++currLen;\r\n    }\r\n  }\r\n\r\n  // if trailing zeros\r\n  if (currLen > maxLen) {\r\n    maxIdx = currStart;\r\n    maxLen = currLen;\r\n  }\r\n\r\n  return {\r\n    idx: maxIdx,\r\n    len: maxLen\r\n  };\r\n}\r\n\r\nfunction serializeHost(host) {\r\n  if (typeof host === \"number\") {\r\n    return serializeIPv4(host);\r\n  }\r\n\r\n  // IPv6 serializer\r\n  if (host instanceof Array) {\r\n    return \"[\" + serializeIPv6(host) + \"]\";\r\n  }\r\n\r\n  return host;\r\n}\r\n\r\nfunction trimControlChars(url) {\r\n  return url.replace(/^[\\u0000-\\u001F\\u0020]+|[\\u0000-\\u001F\\u0020]+$/g, \"\");\r\n}\r\n\r\nfunction trimTabAndNewline(url) {\r\n  return url.replace(/\\u0009|\\u000A|\\u000D/g, \"\");\r\n}\r\n\r\nfunction shortenPath(url) {\r\n  const path = url.path;\r\n  if (path.length === 0) {\r\n    return;\r\n  }\r\n  if (url.scheme === \"file\" && path.length === 1 && isNormalizedWindowsDriveLetter(path[0])) {\r\n    return;\r\n  }\r\n\r\n  path.pop();\r\n}\r\n\r\nfunction includesCredentials(url) {\r\n  return url.username !== \"\" || url.password !== \"\";\r\n}\r\n\r\nfunction cannotHaveAUsernamePasswordPort(url) {\r\n  return url.host === null || url.host === \"\" || url.cannotBeABaseURL || url.scheme === \"file\";\r\n}\r\n\r\nfunction isNormalizedWindowsDriveLetter(string) {\r\n  return /^[A-Za-z]:$/.test(string);\r\n}\r\n\r\nfunction URLStateMachine(input, base, encodingOverride, url, stateOverride) {\r\n  this.pointer = 0;\r\n  this.input = input;\r\n  this.base = base || null;\r\n  this.encodingOverride = encodingOverride || \"utf-8\";\r\n  this.stateOverride = stateOverride;\r\n  this.url = url;\r\n  this.failure = false;\r\n  this.parseError = false;\r\n\r\n  if (!this.url) {\r\n    this.url = {\r\n      scheme: \"\",\r\n      username: \"\",\r\n      password: \"\",\r\n      host: null,\r\n      port: null,\r\n      path: [],\r\n      query: null,\r\n      fragment: null,\r\n\r\n      cannotBeABaseURL: false\r\n    };\r\n\r\n    const res = trimControlChars(this.input);\r\n    if (res !== this.input) {\r\n      this.parseError = true;\r\n    }\r\n    this.input = res;\r\n  }\r\n\r\n  const res = trimTabAndNewline(this.input);\r\n  if (res !== this.input) {\r\n    this.parseError = true;\r\n  }\r\n  this.input = res;\r\n\r\n  this.state = stateOverride || \"scheme start\";\r\n\r\n  this.buffer = \"\";\r\n  this.atFlag = false;\r\n  this.arrFlag = false;\r\n  this.passwordTokenSeenFlag = false;\r\n\r\n  this.input = punycode.ucs2.decode(this.input);\r\n\r\n  for (; this.pointer <= this.input.length; ++this.pointer) {\r\n    const c = this.input[this.pointer];\r\n    const cStr = isNaN(c) ? undefined : String.fromCodePoint(c);\r\n\r\n    // exec state machine\r\n    const ret = this[\"parse \" + this.state](c, cStr);\r\n    if (!ret) {\r\n      break; // terminate algorithm\r\n    } else if (ret === failure) {\r\n      this.failure = true;\r\n      break;\r\n    }\r\n  }\r\n}\r\n\r\nURLStateMachine.prototype[\"parse scheme start\"] = function parseSchemeStart(c, cStr) {\r\n  if (isASCIIAlpha(c)) {\r\n    this.buffer += cStr.toLowerCase();\r\n    this.state = \"scheme\";\r\n  } else if (!this.stateOverride) {\r\n    this.state = \"no scheme\";\r\n    --this.pointer;\r\n  } else {\r\n    this.parseError = true;\r\n    return failure;\r\n  }\r\n\r\n  return true;\r\n};\r\n\r\nURLStateMachine.prototype[\"parse scheme\"] = function parseScheme(c, cStr) {\r\n  if (isASCIIAlphanumeric(c) || c === 43 || c === 45 || c === 46) {\r\n    this.buffer += cStr.toLowerCase();\r\n  } else if (c === 58) {\r\n    if (this.stateOverride) {\r\n      if (isSpecial(this.url) && !isSpecialScheme(this.buffer)) {\r\n        return false;\r\n      }\r\n\r\n      if (!isSpecial(this.url) && isSpecialScheme(this.buffer)) {\r\n        return false;\r\n      }\r\n\r\n      if ((includesCredentials(this.url) || this.url.port !== null) && this.buffer === \"file\") {\r\n        return false;\r\n      }\r\n\r\n      if (this.url.scheme === \"file\" && (this.url.host === \"\" || this.url.host === null)) {\r\n        return false;\r\n      }\r\n    }\r\n    this.url.scheme = this.buffer;\r\n    this.buffer = \"\";\r\n    if (this.stateOverride) {\r\n      return false;\r\n    }\r\n    if (this.url.scheme === \"file\") {\r\n      if (this.input[this.pointer + 1] !== 47 || this.input[this.pointer + 2] !== 47) {\r\n        this.parseError = true;\r\n      }\r\n      this.state = \"file\";\r\n    } else if (isSpecial(this.url) && this.base !== null && this.base.scheme === this.url.scheme) {\r\n      this.state = \"special relative or authority\";\r\n    } else if (isSpecial(this.url)) {\r\n      this.state = \"special authority slashes\";\r\n    } else if (this.input[this.pointer + 1] === 47) {\r\n      this.state = \"path or authority\";\r\n      ++this.pointer;\r\n    } else {\r\n      this.url.cannotBeABaseURL = true;\r\n      this.url.path.push(\"\");\r\n      this.state = \"cannot-be-a-base-URL path\";\r\n    }\r\n  } else if (!this.stateOverride) {\r\n    this.buffer = \"\";\r\n    this.state = \"no scheme\";\r\n    this.pointer = -1;\r\n  } else {\r\n    this.parseError = true;\r\n    return failure;\r\n  }\r\n\r\n  return true;\r\n};\r\n\r\nURLStateMachine.prototype[\"parse no scheme\"] = function parseNoScheme(c) {\r\n  if (this.base === null || (this.base.cannotBeABaseURL && c !== 35)) {\r\n    return failure;\r\n  } else if (this.base.cannotBeABaseURL && c === 35) {\r\n    this.url.scheme = this.base.scheme;\r\n    this.url.path = this.base.path.slice();\r\n    this.url.query = this.base.query;\r\n    this.url.fragment = \"\";\r\n    this.url.cannotBeABaseURL = true;\r\n    this.state = \"fragment\";\r\n  } else if (this.base.scheme === \"file\") {\r\n    this.state = \"file\";\r\n    --this.pointer;\r\n  } else {\r\n    this.state = \"relative\";\r\n    --this.pointer;\r\n  }\r\n\r\n  return true;\r\n};\r\n\r\nURLStateMachine.prototype[\"parse special relative or authority\"] = function parseSpecialRelativeOrAuthority(c) {\r\n  if (c === 47 && this.input[this.pointer + 1] === 47) {\r\n    this.state = \"special authority ignore slashes\";\r\n    ++this.pointer;\r\n  } else {\r\n    this.parseError = true;\r\n    this.state = \"relative\";\r\n    --this.pointer;\r\n  }\r\n\r\n  return true;\r\n};\r\n\r\nURLStateMachine.prototype[\"parse path or authority\"] = function parsePathOrAuthority(c) {\r\n  if (c === 47) {\r\n    this.state = \"authority\";\r\n  } else {\r\n    this.state = \"path\";\r\n    --this.pointer;\r\n  }\r\n\r\n  return true;\r\n};\r\n\r\nURLStateMachine.prototype[\"parse relative\"] = function parseRelative(c) {\r\n  this.url.scheme = this.base.scheme;\r\n  if (isNaN(c)) {\r\n    this.url.username = this.base.username;\r\n    this.url.password = this.base.password;\r\n    this.url.host = this.base.host;\r\n    this.url.port = this.base.port;\r\n    this.url.path = this.base.path.slice();\r\n    this.url.query = this.base.query;\r\n  } else if (c === 47) {\r\n    this.state = \"relative slash\";\r\n  } else if (c === 63) {\r\n    this.url.username = this.base.username;\r\n    this.url.password = this.base.password;\r\n    this.url.host = this.base.host;\r\n    this.url.port = this.base.port;\r\n    this.url.path = this.base.path.slice();\r\n    this.url.query = \"\";\r\n    this.state = \"query\";\r\n  } else if (c === 35) {\r\n    this.url.username = this.base.username;\r\n    this.url.password = this.base.password;\r\n    this.url.host = this.base.host;\r\n    this.url.port = this.base.port;\r\n    this.url.path = this.base.path.slice();\r\n    this.url.query = this.base.query;\r\n    this.url.fragment = \"\";\r\n    this.state = \"fragment\";\r\n  } else if (isSpecial(this.url) && c === 92) {\r\n    this.parseError = true;\r\n    this.state = \"relative slash\";\r\n  } else {\r\n    this.url.username = this.base.username;\r\n    this.url.password = this.base.password;\r\n    this.url.host = this.base.host;\r\n    this.url.port = this.base.port;\r\n    this.url.path = this.base.path.slice(0, this.base.path.length - 1);\r\n\r\n    this.state = \"path\";\r\n    --this.pointer;\r\n  }\r\n\r\n  return true;\r\n};\r\n\r\nURLStateMachine.prototype[\"parse relative slash\"] = function parseRelativeSlash(c) {\r\n  if (isSpecial(this.url) && (c === 47 || c === 92)) {\r\n    if (c === 92) {\r\n      this.parseError = true;\r\n    }\r\n    this.state = \"special authority ignore slashes\";\r\n  } else if (c === 47) {\r\n    this.state = \"authority\";\r\n  } else {\r\n    this.url.username = this.base.username;\r\n    this.url.password = this.base.password;\r\n    this.url.host = this.base.host;\r\n    this.url.port = this.base.port;\r\n    this.state = \"path\";\r\n    --this.pointer;\r\n  }\r\n\r\n  return true;\r\n};\r\n\r\nURLStateMachine.prototype[\"parse special authority slashes\"] = function parseSpecialAuthoritySlashes(c) {\r\n  if (c === 47 && this.input[this.pointer + 1] === 47) {\r\n    this.state = \"special authority ignore slashes\";\r\n    ++this.pointer;\r\n  } else {\r\n    this.parseError = true;\r\n    this.state = \"special authority ignore slashes\";\r\n    --this.pointer;\r\n  }\r\n\r\n  return true;\r\n};\r\n\r\nURLStateMachine.prototype[\"parse special authority ignore slashes\"] = function parseSpecialAuthorityIgnoreSlashes(c) {\r\n  if (c !== 47 && c !== 92) {\r\n    this.state = \"authority\";\r\n    --this.pointer;\r\n  } else {\r\n    this.parseError = true;\r\n  }\r\n\r\n  return true;\r\n};\r\n\r\nURLStateMachine.prototype[\"parse authority\"] = function parseAuthority(c, cStr) {\r\n  if (c === 64) {\r\n    this.parseError = true;\r\n    if (this.atFlag) {\r\n      this.buffer = \"%40\" + this.buffer;\r\n    }\r\n    this.atFlag = true;\r\n\r\n    // careful, this is based on buffer and has its own pointer (this.pointer != pointer) and inner chars\r\n    const len = countSymbols(this.buffer);\r\n    for (let pointer = 0; pointer < len; ++pointer) {\r\n      const codePoint = this.buffer.codePointAt(pointer);\r\n\r\n      if (codePoint === 58 && !this.passwordTokenSeenFlag) {\r\n        this.passwordTokenSeenFlag = true;\r\n        continue;\r\n      }\r\n      const encodedCodePoints = percentEncodeChar(codePoint, isUserinfoPercentEncode);\r\n      if (this.passwordTokenSeenFlag) {\r\n        this.url.password += encodedCodePoints;\r\n      } else {\r\n        this.url.username += encodedCodePoints;\r\n      }\r\n    }\r\n    this.buffer = \"\";\r\n  } else if (isNaN(c) || c === 47 || c === 63 || c === 35 ||\r\n             (isSpecial(this.url) && c === 92)) {\r\n    if (this.atFlag && this.buffer === \"\") {\r\n      this.parseError = true;\r\n      return failure;\r\n    }\r\n    this.pointer -= countSymbols(this.buffer) + 1;\r\n    this.buffer = \"\";\r\n    this.state = \"host\";\r\n  } else {\r\n    this.buffer += cStr;\r\n  }\r\n\r\n  return true;\r\n};\r\n\r\nURLStateMachine.prototype[\"parse hostname\"] =\r\nURLStateMachine.prototype[\"parse host\"] = function parseHostName(c, cStr) {\r\n  if (this.stateOverride && this.url.scheme === \"file\") {\r\n    --this.pointer;\r\n    this.state = \"file host\";\r\n  } else if (c === 58 && !this.arrFlag) {\r\n    if (this.buffer === \"\") {\r\n      this.parseError = true;\r\n      return failure;\r\n    }\r\n\r\n    const host = parseHost(this.buffer, isSpecial(this.url));\r\n    if (host === failure) {\r\n      return failure;\r\n    }\r\n\r\n    this.url.host = host;\r\n    this.buffer = \"\";\r\n    this.state = \"port\";\r\n    if (this.stateOverride === \"hostname\") {\r\n      return false;\r\n    }\r\n  } else if (isNaN(c) || c === 47 || c === 63 || c === 35 ||\r\n             (isSpecial(this.url) && c === 92)) {\r\n    --this.pointer;\r\n    if (isSpecial(this.url) && this.buffer === \"\") {\r\n      this.parseError = true;\r\n      return failure;\r\n    } else if (this.stateOverride && this.buffer === \"\" &&\r\n               (includesCredentials(this.url) || this.url.port !== null)) {\r\n      this.parseError = true;\r\n      return false;\r\n    }\r\n\r\n    const host = parseHost(this.buffer, isSpecial(this.url));\r\n    if (host === failure) {\r\n      return failure;\r\n    }\r\n\r\n    this.url.host = host;\r\n    this.buffer = \"\";\r\n    this.state = \"path start\";\r\n    if (this.stateOverride) {\r\n      return false;\r\n    }\r\n  } else {\r\n    if (c === 91) {\r\n      this.arrFlag = true;\r\n    } else if (c === 93) {\r\n      this.arrFlag = false;\r\n    }\r\n    this.buffer += cStr;\r\n  }\r\n\r\n  return true;\r\n};\r\n\r\nURLStateMachine.prototype[\"parse port\"] = function parsePort(c, cStr) {\r\n  if (isASCIIDigit(c)) {\r\n    this.buffer += cStr;\r\n  } else if (isNaN(c) || c === 47 || c === 63 || c === 35 ||\r\n             (isSpecial(this.url) && c === 92) ||\r\n             this.stateOverride) {\r\n    if (this.buffer !== \"\") {\r\n      const port = parseInt(this.buffer);\r\n      if (port > Math.pow(2, 16) - 1) {\r\n        this.parseError = true;\r\n        return failure;\r\n      }\r\n      this.url.port = port === defaultPort(this.url.scheme) ? null : port;\r\n      this.buffer = \"\";\r\n    }\r\n    if (this.stateOverride) {\r\n      return false;\r\n    }\r\n    this.state = \"path start\";\r\n    --this.pointer;\r\n  } else {\r\n    this.parseError = true;\r\n    return failure;\r\n  }\r\n\r\n  return true;\r\n};\r\n\r\nconst fileOtherwiseCodePoints = new Set([47, 92, 63, 35]);\r\n\r\nURLStateMachine.prototype[\"parse file\"] = function parseFile(c) {\r\n  this.url.scheme = \"file\";\r\n\r\n  if (c === 47 || c === 92) {\r\n    if (c === 92) {\r\n      this.parseError = true;\r\n    }\r\n    this.state = \"file slash\";\r\n  } else if (this.base !== null && this.base.scheme === \"file\") {\r\n    if (isNaN(c)) {\r\n      this.url.host = this.base.host;\r\n      this.url.path = this.base.path.slice();\r\n      this.url.query = this.base.query;\r\n    } else if (c === 63) {\r\n      this.url.host = this.base.host;\r\n      this.url.path = this.base.path.slice();\r\n      this.url.query = \"\";\r\n      this.state = \"query\";\r\n    } else if (c === 35) {\r\n      this.url.host = this.base.host;\r\n      this.url.path = this.base.path.slice();\r\n      this.url.query = this.base.query;\r\n      this.url.fragment = \"\";\r\n      this.state = \"fragment\";\r\n    } else {\r\n      if (this.input.length - this.pointer - 1 === 0 || // remaining consists of 0 code points\r\n          !isWindowsDriveLetterCodePoints(c, this.input[this.pointer + 1]) ||\r\n          (this.input.length - this.pointer - 1 >= 2 && // remaining has at least 2 code points\r\n           !fileOtherwiseCodePoints.has(this.input[this.pointer + 2]))) {\r\n        this.url.host = this.base.host;\r\n        this.url.path = this.base.path.slice();\r\n        shortenPath(this.url);\r\n      } else {\r\n        this.parseError = true;\r\n      }\r\n\r\n      this.state = \"path\";\r\n      --this.pointer;\r\n    }\r\n  } else {\r\n    this.state = \"path\";\r\n    --this.pointer;\r\n  }\r\n\r\n  return true;\r\n};\r\n\r\nURLStateMachine.prototype[\"parse file slash\"] = function parseFileSlash(c) {\r\n  if (c === 47 || c === 92) {\r\n    if (c === 92) {\r\n      this.parseError = true;\r\n    }\r\n    this.state = \"file host\";\r\n  } else {\r\n    if (this.base !== null && this.base.scheme === \"file\") {\r\n      if (isNormalizedWindowsDriveLetterString(this.base.path[0])) {\r\n        this.url.path.push(this.base.path[0]);\r\n      } else {\r\n        this.url.host = this.base.host;\r\n      }\r\n    }\r\n    this.state = \"path\";\r\n    --this.pointer;\r\n  }\r\n\r\n  return true;\r\n};\r\n\r\nURLStateMachine.prototype[\"parse file host\"] = function parseFileHost(c, cStr) {\r\n  if (isNaN(c) || c === 47 || c === 92 || c === 63 || c === 35) {\r\n    --this.pointer;\r\n    if (!this.stateOverride && isWindowsDriveLetterString(this.buffer)) {\r\n      this.parseError = true;\r\n      this.state = \"path\";\r\n    } else if (this.buffer === \"\") {\r\n      this.url.host = \"\";\r\n      if (this.stateOverride) {\r\n        return false;\r\n      }\r\n      this.state = \"path start\";\r\n    } else {\r\n      let host = parseHost(this.buffer, isSpecial(this.url));\r\n      if (host === failure) {\r\n        return failure;\r\n      }\r\n      if (host === \"localhost\") {\r\n        host = \"\";\r\n      }\r\n      this.url.host = host;\r\n\r\n      if (this.stateOverride) {\r\n        return false;\r\n      }\r\n\r\n      this.buffer = \"\";\r\n      this.state = \"path start\";\r\n    }\r\n  } else {\r\n    this.buffer += cStr;\r\n  }\r\n\r\n  return true;\r\n};\r\n\r\nURLStateMachine.prototype[\"parse path start\"] = function parsePathStart(c) {\r\n  if (isSpecial(this.url)) {\r\n    if (c === 92) {\r\n      this.parseError = true;\r\n    }\r\n    this.state = \"path\";\r\n\r\n    if (c !== 47 && c !== 92) {\r\n      --this.pointer;\r\n    }\r\n  } else if (!this.stateOverride && c === 63) {\r\n    this.url.query = \"\";\r\n    this.state = \"query\";\r\n  } else if (!this.stateOverride && c === 35) {\r\n    this.url.fragment = \"\";\r\n    this.state = \"fragment\";\r\n  } else if (c !== undefined) {\r\n    this.state = \"path\";\r\n    if (c !== 47) {\r\n      --this.pointer;\r\n    }\r\n  }\r\n\r\n  return true;\r\n};\r\n\r\nURLStateMachine.prototype[\"parse path\"] = function parsePath(c) {\r\n  if (isNaN(c) || c === 47 || (isSpecial(this.url) && c === 92) ||\r\n      (!this.stateOverride && (c === 63 || c === 35))) {\r\n    if (isSpecial(this.url) && c === 92) {\r\n      this.parseError = true;\r\n    }\r\n\r\n    if (isDoubleDot(this.buffer)) {\r\n      shortenPath(this.url);\r\n      if (c !== 47 && !(isSpecial(this.url) && c === 92)) {\r\n        this.url.path.push(\"\");\r\n      }\r\n    } else if (isSingleDot(this.buffer) && c !== 47 &&\r\n               !(isSpecial(this.url) && c === 92)) {\r\n      this.url.path.push(\"\");\r\n    } else if (!isSingleDot(this.buffer)) {\r\n      if (this.url.scheme === \"file\" && this.url.path.length === 0 && isWindowsDriveLetterString(this.buffer)) {\r\n        if (this.url.host !== \"\" && this.url.host !== null) {\r\n          this.parseError = true;\r\n          this.url.host = \"\";\r\n        }\r\n        this.buffer = this.buffer[0] + \":\";\r\n      }\r\n      this.url.path.push(this.buffer);\r\n    }\r\n    this.buffer = \"\";\r\n    if (this.url.scheme === \"file\" && (c === undefined || c === 63 || c === 35)) {\r\n      while (this.url.path.length > 1 && this.url.path[0] === \"\") {\r\n        this.parseError = true;\r\n        this.url.path.shift();\r\n      }\r\n    }\r\n    if (c === 63) {\r\n      this.url.query = \"\";\r\n      this.state = \"query\";\r\n    }\r\n    if (c === 35) {\r\n      this.url.fragment = \"\";\r\n      this.state = \"fragment\";\r\n    }\r\n  } else {\r\n    // TODO: If c is not a URL code point and not \"%\", parse error.\r\n\r\n    if (c === 37 &&\r\n      (!isASCIIHex(this.input[this.pointer + 1]) ||\r\n        !isASCIIHex(this.input[this.pointer + 2]))) {\r\n      this.parseError = true;\r\n    }\r\n\r\n    this.buffer += percentEncodeChar(c, isPathPercentEncode);\r\n  }\r\n\r\n  return true;\r\n};\r\n\r\nURLStateMachine.prototype[\"parse cannot-be-a-base-URL path\"] = function parseCannotBeABaseURLPath(c) {\r\n  if (c === 63) {\r\n    this.url.query = \"\";\r\n    this.state = \"query\";\r\n  } else if (c === 35) {\r\n    this.url.fragment = \"\";\r\n    this.state = \"fragment\";\r\n  } else {\r\n    // TODO: Add: not a URL code point\r\n    if (!isNaN(c) && c !== 37) {\r\n      this.parseError = true;\r\n    }\r\n\r\n    if (c === 37 &&\r\n        (!isASCIIHex(this.input[this.pointer + 1]) ||\r\n         !isASCIIHex(this.input[this.pointer + 2]))) {\r\n      this.parseError = true;\r\n    }\r\n\r\n    if (!isNaN(c)) {\r\n      this.url.path[0] = this.url.path[0] + percentEncodeChar(c, isC0ControlPercentEncode);\r\n    }\r\n  }\r\n\r\n  return true;\r\n};\r\n\r\nURLStateMachine.prototype[\"parse query\"] = function parseQuery(c, cStr) {\r\n  if (isNaN(c) || (!this.stateOverride && c === 35)) {\r\n    if (!isSpecial(this.url) || this.url.scheme === \"ws\" || this.url.scheme === \"wss\") {\r\n      this.encodingOverride = \"utf-8\";\r\n    }\r\n\r\n    const buffer = new Buffer(this.buffer); // TODO: Use encoding override instead\r\n    for (let i = 0; i < buffer.length; ++i) {\r\n      if (buffer[i] < 0x21 || buffer[i] > 0x7E || buffer[i] === 0x22 || buffer[i] === 0x23 ||\r\n          buffer[i] === 0x3C || buffer[i] === 0x3E) {\r\n        this.url.query += percentEncode(buffer[i]);\r\n      } else {\r\n        this.url.query += String.fromCodePoint(buffer[i]);\r\n      }\r\n    }\r\n\r\n    this.buffer = \"\";\r\n    if (c === 35) {\r\n      this.url.fragment = \"\";\r\n      this.state = \"fragment\";\r\n    }\r\n  } else {\r\n    // TODO: If c is not a URL code point and not \"%\", parse error.\r\n    if (c === 37 &&\r\n      (!isASCIIHex(this.input[this.pointer + 1]) ||\r\n        !isASCIIHex(this.input[this.pointer + 2]))) {\r\n      this.parseError = true;\r\n    }\r\n\r\n    this.buffer += cStr;\r\n  }\r\n\r\n  return true;\r\n};\r\n\r\nURLStateMachine.prototype[\"parse fragment\"] = function parseFragment(c) {\r\n  if (isNaN(c)) { // do nothing\r\n  } else if (c === 0x0) {\r\n    this.parseError = true;\r\n  } else {\r\n    // TODO: If c is not a URL code point and not \"%\", parse error.\r\n    if (c === 37 &&\r\n      (!isASCIIHex(this.input[this.pointer + 1]) ||\r\n        !isASCIIHex(this.input[this.pointer + 2]))) {\r\n      this.parseError = true;\r\n    }\r\n\r\n    this.url.fragment += percentEncodeChar(c, isC0ControlPercentEncode);\r\n  }\r\n\r\n  return true;\r\n};\r\n\r\nfunction serializeURL(url, excludeFragment) {\r\n  let output = url.scheme + \":\";\r\n  if (url.host !== null) {\r\n    output += \"//\";\r\n\r\n    if (url.username !== \"\" || url.password !== \"\") {\r\n      output += url.username;\r\n      if (url.password !== \"\") {\r\n        output += \":\" + url.password;\r\n      }\r\n      output += \"@\";\r\n    }\r\n\r\n    output += serializeHost(url.host);\r\n\r\n    if (url.port !== null) {\r\n      output += \":\" + url.port;\r\n    }\r\n  } else if (url.host === null && url.scheme === \"file\") {\r\n    output += \"//\";\r\n  }\r\n\r\n  if (url.cannotBeABaseURL) {\r\n    output += url.path[0];\r\n  } else {\r\n    for (const string of url.path) {\r\n      output += \"/\" + string;\r\n    }\r\n  }\r\n\r\n  if (url.query !== null) {\r\n    output += \"?\" + url.query;\r\n  }\r\n\r\n  if (!excludeFragment && url.fragment !== null) {\r\n    output += \"#\" + url.fragment;\r\n  }\r\n\r\n  return output;\r\n}\r\n\r\nfunction serializeOrigin(tuple) {\r\n  let result = tuple.scheme + \"://\";\r\n  result += serializeHost(tuple.host);\r\n\r\n  if (tuple.port !== null) {\r\n    result += \":\" + tuple.port;\r\n  }\r\n\r\n  return result;\r\n}\r\n\r\nmodule.exports.serializeURL = serializeURL;\r\n\r\nmodule.exports.serializeURLOrigin = function (url) {\r\n  // https://url.spec.whatwg.org/#concept-url-origin\r\n  switch (url.scheme) {\r\n    case \"blob\":\r\n      try {\r\n        return module.exports.serializeURLOrigin(module.exports.parseURL(url.path[0]));\r\n      } catch (e) {\r\n        // serializing an opaque origin returns \"null\"\r\n        return \"null\";\r\n      }\r\n    case \"ftp\":\r\n    case \"gopher\":\r\n    case \"http\":\r\n    case \"https\":\r\n    case \"ws\":\r\n    case \"wss\":\r\n      return serializeOrigin({\r\n        scheme: url.scheme,\r\n        host: url.host,\r\n        port: url.port\r\n      });\r\n    case \"file\":\r\n      // spec says \"exercise to the reader\", chrome says \"file://\"\r\n      return \"file://\";\r\n    default:\r\n      // serializing an opaque origin returns \"null\"\r\n      return \"null\";\r\n  }\r\n};\r\n\r\nmodule.exports.basicURLParse = function (input, options) {\r\n  if (options === undefined) {\r\n    options = {};\r\n  }\r\n\r\n  const usm = new URLStateMachine(input, options.baseURL, options.encodingOverride, options.url, options.stateOverride);\r\n  if (usm.failure) {\r\n    return \"failure\";\r\n  }\r\n\r\n  return usm.url;\r\n};\r\n\r\nmodule.exports.setTheUsername = function (url, username) {\r\n  url.username = \"\";\r\n  const decoded = punycode.ucs2.decode(username);\r\n  for (let i = 0; i < decoded.length; ++i) {\r\n    url.username += percentEncodeChar(decoded[i], isUserinfoPercentEncode);\r\n  }\r\n};\r\n\r\nmodule.exports.setThePassword = function (url, password) {\r\n  url.password = \"\";\r\n  const decoded = punycode.ucs2.decode(password);\r\n  for (let i = 0; i < decoded.length; ++i) {\r\n    url.password += percentEncodeChar(decoded[i], isUserinfoPercentEncode);\r\n  }\r\n};\r\n\r\nmodule.exports.serializeHost = serializeHost;\r\n\r\nmodule.exports.cannotHaveAUsernamePasswordPort = cannotHaveAUsernamePasswordPort;\r\n\r\nmodule.exports.serializeInteger = function (integer) {\r\n  return String(integer);\r\n};\r\n\r\nmodule.exports.parseURL = function (input, options) {\r\n  if (options === undefined) {\r\n    options = {};\r\n  }\r\n\r\n  // We don't handle blobs, so this just delegates:\r\n  return module.exports.basicURLParse(input, { baseURL: options.baseURL, encodingOverride: options.encodingOverride });\r\n};\r\n","\"use strict\";\n\nmodule.exports.mixin = function mixin(target, source) {\n  const keys = Object.getOwnPropertyNames(source);\n  for (let i = 0; i < keys.length; ++i) {\n    Object.defineProperty(target, keys[i], Object.getOwnPropertyDescriptor(source, keys[i]));\n  }\n};\n\nmodule.exports.wrapperSymbol = Symbol(\"wrapper\");\nmodule.exports.implSymbol = Symbol(\"impl\");\n\nmodule.exports.wrapperForImpl = function (impl) {\n  return impl[module.exports.wrapperSymbol];\n};\n\nmodule.exports.implForWrapper = function (wrapper) {\n  return wrapper[module.exports.implSymbol];\n};\n\n",null,"module.exports = require(\"assert\");","module.exports = require(\"crypto\");","module.exports = require(\"events\");","module.exports = require(\"fs\");","module.exports = require(\"http\");","module.exports = require(\"https\");","module.exports = require(\"net\");","module.exports = require(\"os\");","module.exports = require(\"path\");","module.exports = require(\"punycode\");","module.exports = require(\"stream\");","module.exports = require(\"tls\");","module.exports = require(\"url\");","module.exports = require(\"util\");","module.exports = require(\"zlib\");","'use strict';\n\nvar Node = require('../nodes/Node.js');\nvar Scalar = require('../nodes/Scalar.js');\nvar resolveBlockMap = require('./resolve-block-map.js');\nvar resolveBlockSeq = require('./resolve-block-seq.js');\nvar resolveFlowCollection = require('./resolve-flow-collection.js');\n\nfunction composeCollection(CN, ctx, token, tagToken, onError) {\n    let coll;\n    switch (token.type) {\n        case 'block-map': {\n            coll = resolveBlockMap.resolveBlockMap(CN, ctx, token, onError);\n            break;\n        }\n        case 'block-seq': {\n            coll = resolveBlockSeq.resolveBlockSeq(CN, ctx, token, onError);\n            break;\n        }\n        case 'flow-collection': {\n            coll = resolveFlowCollection.resolveFlowCollection(CN, ctx, token, onError);\n            break;\n        }\n    }\n    if (!tagToken)\n        return coll;\n    const tagName = ctx.directives.tagName(tagToken.source, msg => onError(tagToken, 'TAG_RESOLVE_FAILED', msg));\n    if (!tagName)\n        return coll;\n    // Cast needed due to: https://github.com/Microsoft/TypeScript/issues/3841\n    const Coll = coll.constructor;\n    if (tagName === '!' || tagName === Coll.tagName) {\n        coll.tag = Coll.tagName;\n        return coll;\n    }\n    const expType = Node.isMap(coll) ? 'map' : 'seq';\n    let tag = ctx.schema.tags.find(t => t.collection === expType && t.tag === tagName);\n    if (!tag) {\n        const kt = ctx.schema.knownTags[tagName];\n        if (kt && kt.collection === expType) {\n            ctx.schema.tags.push(Object.assign({}, kt, { default: false }));\n            tag = kt;\n        }\n        else {\n            onError(tagToken, 'TAG_RESOLVE_FAILED', `Unresolved tag: ${tagName}`, true);\n            coll.tag = tagName;\n            return coll;\n        }\n    }\n    const res = tag.resolve(coll, msg => onError(tagToken, 'TAG_RESOLVE_FAILED', msg), ctx.options);\n    const node = Node.isNode(res)\n        ? res\n        : new Scalar.Scalar(res);\n    node.range = coll.range;\n    node.tag = tagName;\n    if (tag?.format)\n        node.format = tag.format;\n    return node;\n}\n\nexports.composeCollection = composeCollection;\n","'use strict';\n\nvar Document = require('../doc/Document.js');\nvar composeNode = require('./compose-node.js');\nvar resolveEnd = require('./resolve-end.js');\nvar resolveProps = require('./resolve-props.js');\n\nfunction composeDoc(options, directives, { offset, start, value, end }, onError) {\n    const opts = Object.assign({ _directives: directives }, options);\n    const doc = new Document.Document(undefined, opts);\n    const ctx = {\n        atRoot: true,\n        directives: doc.directives,\n        options: doc.options,\n        schema: doc.schema\n    };\n    const props = resolveProps.resolveProps(start, {\n        indicator: 'doc-start',\n        next: value ?? end?.[0],\n        offset,\n        onError,\n        startOnNewline: true\n    });\n    if (props.found) {\n        doc.directives.docStart = true;\n        if (value &&\n            (value.type === 'block-map' || value.type === 'block-seq') &&\n            !props.hasNewline)\n            onError(props.end, 'MISSING_CHAR', 'Block collection cannot start on same line with directives-end marker');\n    }\n    doc.contents = value\n        ? composeNode.composeNode(ctx, value, props, onError)\n        : composeNode.composeEmptyNode(ctx, props.end, start, null, props, onError);\n    const contentEnd = doc.contents.range[2];\n    const re = resolveEnd.resolveEnd(end, contentEnd, false, onError);\n    if (re.comment)\n        doc.comment = re.comment;\n    doc.range = [offset, contentEnd, re.offset];\n    return doc;\n}\n\nexports.composeDoc = composeDoc;\n","'use strict';\n\nvar Alias = require('../nodes/Alias.js');\nvar composeCollection = require('./compose-collection.js');\nvar composeScalar = require('./compose-scalar.js');\nvar resolveEnd = require('./resolve-end.js');\nvar utilEmptyScalarPosition = require('./util-empty-scalar-position.js');\n\nconst CN = { composeNode, composeEmptyNode };\nfunction composeNode(ctx, token, props, onError) {\n    const { spaceBefore, comment, anchor, tag } = props;\n    let node;\n    let isSrcToken = true;\n    switch (token.type) {\n        case 'alias':\n            node = composeAlias(ctx, token, onError);\n            if (anchor || tag)\n                onError(token, 'ALIAS_PROPS', 'An alias node must not specify any properties');\n            break;\n        case 'scalar':\n        case 'single-quoted-scalar':\n        case 'double-quoted-scalar':\n        case 'block-scalar':\n            node = composeScalar.composeScalar(ctx, token, tag, onError);\n            if (anchor)\n                node.anchor = anchor.source.substring(1);\n            break;\n        case 'block-map':\n        case 'block-seq':\n        case 'flow-collection':\n            node = composeCollection.composeCollection(CN, ctx, token, tag, onError);\n            if (anchor)\n                node.anchor = anchor.source.substring(1);\n            break;\n        default: {\n            const message = token.type === 'error'\n                ? token.message\n                : `Unsupported token (type: ${token.type})`;\n            onError(token, 'UNEXPECTED_TOKEN', message);\n            node = composeEmptyNode(ctx, token.offset, undefined, null, props, onError);\n            isSrcToken = false;\n        }\n    }\n    if (anchor && node.anchor === '')\n        onError(anchor, 'BAD_ALIAS', 'Anchor cannot be an empty string');\n    if (spaceBefore)\n        node.spaceBefore = true;\n    if (comment) {\n        if (token.type === 'scalar' && token.source === '')\n            node.comment = comment;\n        else\n            node.commentBefore = comment;\n    }\n    // @ts-expect-error Type checking misses meaning of isSrcToken\n    if (ctx.options.keepSourceTokens && isSrcToken)\n        node.srcToken = token;\n    return node;\n}\nfunction composeEmptyNode(ctx, offset, before, pos, { spaceBefore, comment, anchor, tag, end }, onError) {\n    const token = {\n        type: 'scalar',\n        offset: utilEmptyScalarPosition.emptyScalarPosition(offset, before, pos),\n        indent: -1,\n        source: ''\n    };\n    const node = composeScalar.composeScalar(ctx, token, tag, onError);\n    if (anchor) {\n        node.anchor = anchor.source.substring(1);\n        if (node.anchor === '')\n            onError(anchor, 'BAD_ALIAS', 'Anchor cannot be an empty string');\n    }\n    if (spaceBefore)\n        node.spaceBefore = true;\n    if (comment) {\n        node.comment = comment;\n        node.range[2] = end;\n    }\n    return node;\n}\nfunction composeAlias({ options }, { offset, source, end }, onError) {\n    const alias = new Alias.Alias(source.substring(1));\n    if (alias.source === '')\n        onError(offset, 'BAD_ALIAS', 'Alias cannot be an empty string');\n    if (alias.source.endsWith(':'))\n        onError(offset + source.length - 1, 'BAD_ALIAS', 'Alias ending in : is ambiguous', true);\n    const valueEnd = offset + source.length;\n    const re = resolveEnd.resolveEnd(end, valueEnd, options.strict, onError);\n    alias.range = [offset, valueEnd, re.offset];\n    if (re.comment)\n        alias.comment = re.comment;\n    return alias;\n}\n\nexports.composeEmptyNode = composeEmptyNode;\nexports.composeNode = composeNode;\n","'use strict';\n\nvar Node = require('../nodes/Node.js');\nvar Scalar = require('../nodes/Scalar.js');\nvar resolveBlockScalar = require('./resolve-block-scalar.js');\nvar resolveFlowScalar = require('./resolve-flow-scalar.js');\n\nfunction composeScalar(ctx, token, tagToken, onError) {\n    const { value, type, comment, range } = token.type === 'block-scalar'\n        ? resolveBlockScalar.resolveBlockScalar(token, ctx.options.strict, onError)\n        : resolveFlowScalar.resolveFlowScalar(token, ctx.options.strict, onError);\n    const tagName = tagToken\n        ? ctx.directives.tagName(tagToken.source, msg => onError(tagToken, 'TAG_RESOLVE_FAILED', msg))\n        : null;\n    const tag = tagToken && tagName\n        ? findScalarTagByName(ctx.schema, value, tagName, tagToken, onError)\n        : token.type === 'scalar'\n            ? findScalarTagByTest(ctx, value, token, onError)\n            : ctx.schema[Node.SCALAR];\n    let scalar;\n    try {\n        const res = tag.resolve(value, msg => onError(tagToken ?? token, 'TAG_RESOLVE_FAILED', msg), ctx.options);\n        scalar = Node.isScalar(res) ? res : new Scalar.Scalar(res);\n    }\n    catch (error) {\n        const msg = error instanceof Error ? error.message : String(error);\n        onError(tagToken ?? token, 'TAG_RESOLVE_FAILED', msg);\n        scalar = new Scalar.Scalar(value);\n    }\n    scalar.range = range;\n    scalar.source = value;\n    if (type)\n        scalar.type = type;\n    if (tagName)\n        scalar.tag = tagName;\n    if (tag.format)\n        scalar.format = tag.format;\n    if (comment)\n        scalar.comment = comment;\n    return scalar;\n}\nfunction findScalarTagByName(schema, value, tagName, tagToken, onError) {\n    if (tagName === '!')\n        return schema[Node.SCALAR]; // non-specific tag\n    const matchWithTest = [];\n    for (const tag of schema.tags) {\n        if (!tag.collection && tag.tag === tagName) {\n            if (tag.default && tag.test)\n                matchWithTest.push(tag);\n            else\n                return tag;\n        }\n    }\n    for (const tag of matchWithTest)\n        if (tag.test?.test(value))\n            return tag;\n    const kt = schema.knownTags[tagName];\n    if (kt && !kt.collection) {\n        // Ensure that the known tag is available for stringifying,\n        // but does not get used by default.\n        schema.tags.push(Object.assign({}, kt, { default: false, test: undefined }));\n        return kt;\n    }\n    onError(tagToken, 'TAG_RESOLVE_FAILED', `Unresolved tag: ${tagName}`, tagName !== 'tag:yaml.org,2002:str');\n    return schema[Node.SCALAR];\n}\nfunction findScalarTagByTest({ directives, schema }, value, token, onError) {\n    const tag = schema.tags.find(tag => tag.default && tag.test?.test(value)) || schema[Node.SCALAR];\n    if (schema.compat) {\n        const compat = schema.compat.find(tag => tag.default && tag.test?.test(value)) ??\n            schema[Node.SCALAR];\n        if (tag.tag !== compat.tag) {\n            const ts = directives.tagString(tag.tag);\n            const cs = directives.tagString(compat.tag);\n            const msg = `Value may be parsed as either ${ts} or ${cs}`;\n            onError(token, 'TAG_RESOLVE_FAILED', msg, true);\n        }\n    }\n    return tag;\n}\n\nexports.composeScalar = composeScalar;\n","'use strict';\n\nvar directives = require('../doc/directives.js');\nvar Document = require('../doc/Document.js');\nvar errors = require('../errors.js');\nvar Node = require('../nodes/Node.js');\nvar composeDoc = require('./compose-doc.js');\nvar resolveEnd = require('./resolve-end.js');\n\nfunction getErrorPos(src) {\n    if (typeof src === 'number')\n        return [src, src + 1];\n    if (Array.isArray(src))\n        return src.length === 2 ? src : [src[0], src[1]];\n    const { offset, source } = src;\n    return [offset, offset + (typeof source === 'string' ? source.length : 1)];\n}\nfunction parsePrelude(prelude) {\n    let comment = '';\n    let atComment = false;\n    let afterEmptyLine = false;\n    for (let i = 0; i < prelude.length; ++i) {\n        const source = prelude[i];\n        switch (source[0]) {\n            case '#':\n                comment +=\n                    (comment === '' ? '' : afterEmptyLine ? '\\n\\n' : '\\n') +\n                        (source.substring(1) || ' ');\n                atComment = true;\n                afterEmptyLine = false;\n                break;\n            case '%':\n                if (prelude[i + 1]?.[0] !== '#')\n                    i += 1;\n                atComment = false;\n                break;\n            default:\n                // This may be wrong after doc-end, but in that case it doesn't matter\n                if (!atComment)\n                    afterEmptyLine = true;\n                atComment = false;\n        }\n    }\n    return { comment, afterEmptyLine };\n}\n/**\n * Compose a stream of CST nodes into a stream of YAML Documents.\n *\n * ```ts\n * import { Composer, Parser } from 'yaml'\n *\n * const src: string = ...\n * const tokens = new Parser().parse(src)\n * const docs = new Composer().compose(tokens)\n * ```\n */\nclass Composer {\n    constructor(options = {}) {\n        this.doc = null;\n        this.atDirectives = false;\n        this.prelude = [];\n        this.errors = [];\n        this.warnings = [];\n        this.onError = (source, code, message, warning) => {\n            const pos = getErrorPos(source);\n            if (warning)\n                this.warnings.push(new errors.YAMLWarning(pos, code, message));\n            else\n                this.errors.push(new errors.YAMLParseError(pos, code, message));\n        };\n        // eslint-disable-next-line @typescript-eslint/prefer-nullish-coalescing\n        this.directives = new directives.Directives({ version: options.version || '1.2' });\n        this.options = options;\n    }\n    decorate(doc, afterDoc) {\n        const { comment, afterEmptyLine } = parsePrelude(this.prelude);\n        //console.log({ dc: doc.comment, prelude, comment })\n        if (comment) {\n            const dc = doc.contents;\n            if (afterDoc) {\n                doc.comment = doc.comment ? `${doc.comment}\\n${comment}` : comment;\n            }\n            else if (afterEmptyLine || doc.directives.docStart || !dc) {\n                doc.commentBefore = comment;\n            }\n            else if (Node.isCollection(dc) && !dc.flow && dc.items.length > 0) {\n                let it = dc.items[0];\n                if (Node.isPair(it))\n                    it = it.key;\n                const cb = it.commentBefore;\n                it.commentBefore = cb ? `${comment}\\n${cb}` : comment;\n            }\n            else {\n                const cb = dc.commentBefore;\n                dc.commentBefore = cb ? `${comment}\\n${cb}` : comment;\n            }\n        }\n        if (afterDoc) {\n            Array.prototype.push.apply(doc.errors, this.errors);\n            Array.prototype.push.apply(doc.warnings, this.warnings);\n        }\n        else {\n            doc.errors = this.errors;\n            doc.warnings = this.warnings;\n        }\n        this.prelude = [];\n        this.errors = [];\n        this.warnings = [];\n    }\n    /**\n     * Current stream status information.\n     *\n     * Mostly useful at the end of input for an empty stream.\n     */\n    streamInfo() {\n        return {\n            comment: parsePrelude(this.prelude).comment,\n            directives: this.directives,\n            errors: this.errors,\n            warnings: this.warnings\n        };\n    }\n    /**\n     * Compose tokens into documents.\n     *\n     * @param forceDoc - If the stream contains no document, still emit a final document including any comments and directives that would be applied to a subsequent document.\n     * @param endOffset - Should be set if `forceDoc` is also set, to set the document range end and to indicate errors correctly.\n     */\n    *compose(tokens, forceDoc = false, endOffset = -1) {\n        for (const token of tokens)\n            yield* this.next(token);\n        yield* this.end(forceDoc, endOffset);\n    }\n    /** Advance the composer by one CST token. */\n    *next(token) {\n        if (process.env.LOG_STREAM)\n            console.dir(token, { depth: null });\n        switch (token.type) {\n            case 'directive':\n                this.directives.add(token.source, (offset, message, warning) => {\n                    const pos = getErrorPos(token);\n                    pos[0] += offset;\n                    this.onError(pos, 'BAD_DIRECTIVE', message, warning);\n                });\n                this.prelude.push(token.source);\n                this.atDirectives = true;\n                break;\n            case 'document': {\n                const doc = composeDoc.composeDoc(this.options, this.directives, token, this.onError);\n                if (this.atDirectives && !doc.directives.docStart)\n                    this.onError(token, 'MISSING_CHAR', 'Missing directives-end/doc-start indicator line');\n                this.decorate(doc, false);\n                if (this.doc)\n                    yield this.doc;\n                this.doc = doc;\n                this.atDirectives = false;\n                break;\n            }\n            case 'byte-order-mark':\n            case 'space':\n                break;\n            case 'comment':\n            case 'newline':\n                this.prelude.push(token.source);\n                break;\n            case 'error': {\n                const msg = token.source\n                    ? `${token.message}: ${JSON.stringify(token.source)}`\n                    : token.message;\n                const error = new errors.YAMLParseError(getErrorPos(token), 'UNEXPECTED_TOKEN', msg);\n                if (this.atDirectives || !this.doc)\n                    this.errors.push(error);\n                else\n                    this.doc.errors.push(error);\n                break;\n            }\n            case 'doc-end': {\n                if (!this.doc) {\n                    const msg = 'Unexpected doc-end without preceding document';\n                    this.errors.push(new errors.YAMLParseError(getErrorPos(token), 'UNEXPECTED_TOKEN', msg));\n                    break;\n                }\n                this.doc.directives.docEnd = true;\n                const end = resolveEnd.resolveEnd(token.end, token.offset + token.source.length, this.doc.options.strict, this.onError);\n                this.decorate(this.doc, true);\n                if (end.comment) {\n                    const dc = this.doc.comment;\n                    this.doc.comment = dc ? `${dc}\\n${end.comment}` : end.comment;\n                }\n                this.doc.range[2] = end.offset;\n                break;\n            }\n            default:\n                this.errors.push(new errors.YAMLParseError(getErrorPos(token), 'UNEXPECTED_TOKEN', `Unsupported token ${token.type}`));\n        }\n    }\n    /**\n     * Call at end of input to yield any remaining document.\n     *\n     * @param forceDoc - If the stream contains no document, still emit a final document including any comments and directives that would be applied to a subsequent document.\n     * @param endOffset - Should be set if `forceDoc` is also set, to set the document range end and to indicate errors correctly.\n     */\n    *end(forceDoc = false, endOffset = -1) {\n        if (this.doc) {\n            this.decorate(this.doc, true);\n            yield this.doc;\n            this.doc = null;\n        }\n        else if (forceDoc) {\n            const opts = Object.assign({ _directives: this.directives }, this.options);\n            const doc = new Document.Document(undefined, opts);\n            if (this.atDirectives)\n                this.onError(endOffset, 'MISSING_CHAR', 'Missing directives-end indicator line');\n            doc.range = [0, endOffset, endOffset];\n            this.decorate(doc, false);\n            yield doc;\n        }\n    }\n}\n\nexports.Composer = Composer;\n","'use strict';\n\nvar Pair = require('../nodes/Pair.js');\nvar YAMLMap = require('../nodes/YAMLMap.js');\nvar resolveProps = require('./resolve-props.js');\nvar utilContainsNewline = require('./util-contains-newline.js');\nvar utilFlowIndentCheck = require('./util-flow-indent-check.js');\nvar utilMapIncludes = require('./util-map-includes.js');\n\nconst startColMsg = 'All mapping items must start at the same column';\nfunction resolveBlockMap({ composeNode, composeEmptyNode }, ctx, bm, onError) {\n    const map = new YAMLMap.YAMLMap(ctx.schema);\n    if (ctx.atRoot)\n        ctx.atRoot = false;\n    let offset = bm.offset;\n    let commentEnd = null;\n    for (const collItem of bm.items) {\n        const { start, key, sep, value } = collItem;\n        // key properties\n        const keyProps = resolveProps.resolveProps(start, {\n            indicator: 'explicit-key-ind',\n            next: key ?? sep?.[0],\n            offset,\n            onError,\n            startOnNewline: true\n        });\n        const implicitKey = !keyProps.found;\n        if (implicitKey) {\n            if (key) {\n                if (key.type === 'block-seq')\n                    onError(offset, 'BLOCK_AS_IMPLICIT_KEY', 'A block sequence may not be used as an implicit map key');\n                else if ('indent' in key && key.indent !== bm.indent)\n                    onError(offset, 'BAD_INDENT', startColMsg);\n            }\n            if (!keyProps.anchor && !keyProps.tag && !sep) {\n                commentEnd = keyProps.end;\n                if (keyProps.comment) {\n                    if (map.comment)\n                        map.comment += '\\n' + keyProps.comment;\n                    else\n                        map.comment = keyProps.comment;\n                }\n                continue;\n            }\n            if (keyProps.hasNewlineAfterProp || utilContainsNewline.containsNewline(key)) {\n                onError(key ?? start[start.length - 1], 'MULTILINE_IMPLICIT_KEY', 'Implicit keys need to be on a single line');\n            }\n        }\n        else if (keyProps.found?.indent !== bm.indent) {\n            onError(offset, 'BAD_INDENT', startColMsg);\n        }\n        // key value\n        const keyStart = keyProps.end;\n        const keyNode = key\n            ? composeNode(ctx, key, keyProps, onError)\n            : composeEmptyNode(ctx, keyStart, start, null, keyProps, onError);\n        if (ctx.schema.compat)\n            utilFlowIndentCheck.flowIndentCheck(bm.indent, key, onError);\n        if (utilMapIncludes.mapIncludes(ctx, map.items, keyNode))\n            onError(keyStart, 'DUPLICATE_KEY', 'Map keys must be unique');\n        // value properties\n        const valueProps = resolveProps.resolveProps(sep ?? [], {\n            indicator: 'map-value-ind',\n            next: value,\n            offset: keyNode.range[2],\n            onError,\n            startOnNewline: !key || key.type === 'block-scalar'\n        });\n        offset = valueProps.end;\n        if (valueProps.found) {\n            if (implicitKey) {\n                if (value?.type === 'block-map' && !valueProps.hasNewline)\n                    onError(offset, 'BLOCK_AS_IMPLICIT_KEY', 'Nested mappings are not allowed in compact mappings');\n                if (ctx.options.strict &&\n                    keyProps.start < valueProps.found.offset - 1024)\n                    onError(keyNode.range, 'KEY_OVER_1024_CHARS', 'The : indicator must be at most 1024 chars after the start of an implicit block mapping key');\n            }\n            // value value\n            const valueNode = value\n                ? composeNode(ctx, value, valueProps, onError)\n                : composeEmptyNode(ctx, offset, sep, null, valueProps, onError);\n            if (ctx.schema.compat)\n                utilFlowIndentCheck.flowIndentCheck(bm.indent, value, onError);\n            offset = valueNode.range[2];\n            const pair = new Pair.Pair(keyNode, valueNode);\n            if (ctx.options.keepSourceTokens)\n                pair.srcToken = collItem;\n            map.items.push(pair);\n        }\n        else {\n            // key with no value\n            if (implicitKey)\n                onError(keyNode.range, 'MISSING_CHAR', 'Implicit map keys need to be followed by map values');\n            if (valueProps.comment) {\n                if (keyNode.comment)\n                    keyNode.comment += '\\n' + valueProps.comment;\n                else\n                    keyNode.comment = valueProps.comment;\n            }\n            const pair = new Pair.Pair(keyNode);\n            if (ctx.options.keepSourceTokens)\n                pair.srcToken = collItem;\n            map.items.push(pair);\n        }\n    }\n    if (commentEnd && commentEnd < offset)\n        onError(commentEnd, 'IMPOSSIBLE', 'Map comment with trailing content');\n    map.range = [bm.offset, offset, commentEnd ?? offset];\n    return map;\n}\n\nexports.resolveBlockMap = resolveBlockMap;\n","'use strict';\n\nvar Scalar = require('../nodes/Scalar.js');\n\nfunction resolveBlockScalar(scalar, strict, onError) {\n    const start = scalar.offset;\n    const header = parseBlockScalarHeader(scalar, strict, onError);\n    if (!header)\n        return { value: '', type: null, comment: '', range: [start, start, start] };\n    const type = header.mode === '>' ? Scalar.Scalar.BLOCK_FOLDED : Scalar.Scalar.BLOCK_LITERAL;\n    const lines = scalar.source ? splitLines(scalar.source) : [];\n    // determine the end of content & start of chomping\n    let chompStart = lines.length;\n    for (let i = lines.length - 1; i >= 0; --i) {\n        const content = lines[i][1];\n        if (content === '' || content === '\\r')\n            chompStart = i;\n        else\n            break;\n    }\n    // shortcut for empty contents\n    if (chompStart === 0) {\n        const value = header.chomp === '+' && lines.length > 0\n            ? '\\n'.repeat(Math.max(1, lines.length - 1))\n            : '';\n        let end = start + header.length;\n        if (scalar.source)\n            end += scalar.source.length;\n        return { value, type, comment: header.comment, range: [start, end, end] };\n    }\n    // find the indentation level to trim from start\n    let trimIndent = scalar.indent + header.indent;\n    let offset = scalar.offset + header.length;\n    let contentStart = 0;\n    for (let i = 0; i < chompStart; ++i) {\n        const [indent, content] = lines[i];\n        if (content === '' || content === '\\r') {\n            if (header.indent === 0 && indent.length > trimIndent)\n                trimIndent = indent.length;\n        }\n        else {\n            if (indent.length < trimIndent) {\n                const message = 'Block scalars with more-indented leading empty lines must use an explicit indentation indicator';\n                onError(offset + indent.length, 'MISSING_CHAR', message);\n            }\n            if (header.indent === 0)\n                trimIndent = indent.length;\n            contentStart = i;\n            break;\n        }\n        offset += indent.length + content.length + 1;\n    }\n    // include trailing more-indented empty lines in content\n    for (let i = lines.length - 1; i >= chompStart; --i) {\n        if (lines[i][0].length > trimIndent)\n            chompStart = i + 1;\n    }\n    let value = '';\n    let sep = '';\n    let prevMoreIndented = false;\n    // leading whitespace is kept intact\n    for (let i = 0; i < contentStart; ++i)\n        value += lines[i][0].slice(trimIndent) + '\\n';\n    for (let i = contentStart; i < chompStart; ++i) {\n        let [indent, content] = lines[i];\n        offset += indent.length + content.length + 1;\n        const crlf = content[content.length - 1] === '\\r';\n        if (crlf)\n            content = content.slice(0, -1);\n        /* istanbul ignore if already caught in lexer */\n        if (content && indent.length < trimIndent) {\n            const src = header.indent\n                ? 'explicit indentation indicator'\n                : 'first line';\n            const message = `Block scalar lines must not be less indented than their ${src}`;\n            onError(offset - content.length - (crlf ? 2 : 1), 'BAD_INDENT', message);\n            indent = '';\n        }\n        if (type === Scalar.Scalar.BLOCK_LITERAL) {\n            value += sep + indent.slice(trimIndent) + content;\n            sep = '\\n';\n        }\n        else if (indent.length > trimIndent || content[0] === '\\t') {\n            // more-indented content within a folded block\n            if (sep === ' ')\n                sep = '\\n';\n            else if (!prevMoreIndented && sep === '\\n')\n                sep = '\\n\\n';\n            value += sep + indent.slice(trimIndent) + content;\n            sep = '\\n';\n            prevMoreIndented = true;\n        }\n        else if (content === '') {\n            // empty line\n            if (sep === '\\n')\n                value += '\\n';\n            else\n                sep = '\\n';\n        }\n        else {\n            value += sep + content;\n            sep = ' ';\n            prevMoreIndented = false;\n        }\n    }\n    switch (header.chomp) {\n        case '-':\n            break;\n        case '+':\n            for (let i = chompStart; i < lines.length; ++i)\n                value += '\\n' + lines[i][0].slice(trimIndent);\n            if (value[value.length - 1] !== '\\n')\n                value += '\\n';\n            break;\n        default:\n            value += '\\n';\n    }\n    const end = start + header.length + scalar.source.length;\n    return { value, type, comment: header.comment, range: [start, end, end] };\n}\nfunction parseBlockScalarHeader({ offset, props }, strict, onError) {\n    /* istanbul ignore if should not happen */\n    if (props[0].type !== 'block-scalar-header') {\n        onError(props[0], 'IMPOSSIBLE', 'Block scalar header not found');\n        return null;\n    }\n    const { source } = props[0];\n    const mode = source[0];\n    let indent = 0;\n    let chomp = '';\n    let error = -1;\n    for (let i = 1; i < source.length; ++i) {\n        const ch = source[i];\n        if (!chomp && (ch === '-' || ch === '+'))\n            chomp = ch;\n        else {\n            const n = Number(ch);\n            if (!indent && n)\n                indent = n;\n            else if (error === -1)\n                error = offset + i;\n        }\n    }\n    if (error !== -1)\n        onError(error, 'UNEXPECTED_TOKEN', `Block scalar header includes extra characters: ${source}`);\n    let hasSpace = false;\n    let comment = '';\n    let length = source.length;\n    for (let i = 1; i < props.length; ++i) {\n        const token = props[i];\n        switch (token.type) {\n            case 'space':\n                hasSpace = true;\n            // fallthrough\n            case 'newline':\n                length += token.source.length;\n                break;\n            case 'comment':\n                if (strict && !hasSpace) {\n                    const message = 'Comments must be separated from other tokens by white space characters';\n                    onError(token, 'MISSING_CHAR', message);\n                }\n                length += token.source.length;\n                comment = token.source.substring(1);\n                break;\n            case 'error':\n                onError(token, 'UNEXPECTED_TOKEN', token.message);\n                length += token.source.length;\n                break;\n            /* istanbul ignore next should not happen */\n            default: {\n                const message = `Unexpected token in block scalar header: ${token.type}`;\n                onError(token, 'UNEXPECTED_TOKEN', message);\n                const ts = token.source;\n                if (ts && typeof ts === 'string')\n                    length += ts.length;\n            }\n        }\n    }\n    return { mode, indent, chomp, comment, length };\n}\n/** @returns Array of lines split up as `[indent, content]` */\nfunction splitLines(source) {\n    const split = source.split(/\\n( *)/);\n    const first = split[0];\n    const m = first.match(/^( *)/);\n    const line0 = m?.[1]\n        ? [m[1], first.slice(m[1].length)]\n        : ['', first];\n    const lines = [line0];\n    for (let i = 1; i < split.length; i += 2)\n        lines.push([split[i], split[i + 1]]);\n    return lines;\n}\n\nexports.resolveBlockScalar = resolveBlockScalar;\n","'use strict';\n\nvar YAMLSeq = require('../nodes/YAMLSeq.js');\nvar resolveProps = require('./resolve-props.js');\nvar utilFlowIndentCheck = require('./util-flow-indent-check.js');\n\nfunction resolveBlockSeq({ composeNode, composeEmptyNode }, ctx, bs, onError) {\n    const seq = new YAMLSeq.YAMLSeq(ctx.schema);\n    if (ctx.atRoot)\n        ctx.atRoot = false;\n    let offset = bs.offset;\n    let commentEnd = null;\n    for (const { start, value } of bs.items) {\n        const props = resolveProps.resolveProps(start, {\n            indicator: 'seq-item-ind',\n            next: value,\n            offset,\n            onError,\n            startOnNewline: true\n        });\n        if (!props.found) {\n            if (props.anchor || props.tag || value) {\n                if (value && value.type === 'block-seq')\n                    onError(props.end, 'BAD_INDENT', 'All sequence items must start at the same column');\n                else\n                    onError(offset, 'MISSING_CHAR', 'Sequence item without - indicator');\n            }\n            else {\n                commentEnd = props.end;\n                if (props.comment)\n                    seq.comment = props.comment;\n                continue;\n            }\n        }\n        const node = value\n            ? composeNode(ctx, value, props, onError)\n            : composeEmptyNode(ctx, props.end, start, null, props, onError);\n        if (ctx.schema.compat)\n            utilFlowIndentCheck.flowIndentCheck(bs.indent, value, onError);\n        offset = node.range[2];\n        seq.items.push(node);\n    }\n    seq.range = [bs.offset, offset, commentEnd ?? offset];\n    return seq;\n}\n\nexports.resolveBlockSeq = resolveBlockSeq;\n","'use strict';\n\nfunction resolveEnd(end, offset, reqSpace, onError) {\n    let comment = '';\n    if (end) {\n        let hasSpace = false;\n        let sep = '';\n        for (const token of end) {\n            const { source, type } = token;\n            switch (type) {\n                case 'space':\n                    hasSpace = true;\n                    break;\n                case 'comment': {\n                    if (reqSpace && !hasSpace)\n                        onError(token, 'MISSING_CHAR', 'Comments must be separated from other tokens by white space characters');\n                    const cb = source.substring(1) || ' ';\n                    if (!comment)\n                        comment = cb;\n                    else\n                        comment += sep + cb;\n                    sep = '';\n                    break;\n                }\n                case 'newline':\n                    if (comment)\n                        sep += source;\n                    hasSpace = true;\n                    break;\n                default:\n                    onError(token, 'UNEXPECTED_TOKEN', `Unexpected ${type} at node end`);\n            }\n            offset += source.length;\n        }\n    }\n    return { comment, offset };\n}\n\nexports.resolveEnd = resolveEnd;\n","'use strict';\n\nvar Node = require('../nodes/Node.js');\nvar Pair = require('../nodes/Pair.js');\nvar YAMLMap = require('../nodes/YAMLMap.js');\nvar YAMLSeq = require('../nodes/YAMLSeq.js');\nvar resolveEnd = require('./resolve-end.js');\nvar resolveProps = require('./resolve-props.js');\nvar utilContainsNewline = require('./util-contains-newline.js');\nvar utilMapIncludes = require('./util-map-includes.js');\n\nconst blockMsg = 'Block collections are not allowed within flow collections';\nconst isBlock = (token) => token && (token.type === 'block-map' || token.type === 'block-seq');\nfunction resolveFlowCollection({ composeNode, composeEmptyNode }, ctx, fc, onError) {\n    const isMap = fc.start.source === '{';\n    const fcName = isMap ? 'flow map' : 'flow sequence';\n    const coll = isMap\n        ? new YAMLMap.YAMLMap(ctx.schema)\n        : new YAMLSeq.YAMLSeq(ctx.schema);\n    coll.flow = true;\n    const atRoot = ctx.atRoot;\n    if (atRoot)\n        ctx.atRoot = false;\n    let offset = fc.offset + fc.start.source.length;\n    for (let i = 0; i < fc.items.length; ++i) {\n        const collItem = fc.items[i];\n        const { start, key, sep, value } = collItem;\n        const props = resolveProps.resolveProps(start, {\n            flow: fcName,\n            indicator: 'explicit-key-ind',\n            next: key ?? sep?.[0],\n            offset,\n            onError,\n            startOnNewline: false\n        });\n        if (!props.found) {\n            if (!props.anchor && !props.tag && !sep && !value) {\n                if (i === 0 && props.comma)\n                    onError(props.comma, 'UNEXPECTED_TOKEN', `Unexpected , in ${fcName}`);\n                else if (i < fc.items.length - 1)\n                    onError(props.start, 'UNEXPECTED_TOKEN', `Unexpected empty item in ${fcName}`);\n                if (props.comment) {\n                    if (coll.comment)\n                        coll.comment += '\\n' + props.comment;\n                    else\n                        coll.comment = props.comment;\n                }\n                offset = props.end;\n                continue;\n            }\n            if (!isMap && ctx.options.strict && utilContainsNewline.containsNewline(key))\n                onError(key, // checked by containsNewline()\n                'MULTILINE_IMPLICIT_KEY', 'Implicit keys of flow sequence pairs need to be on a single line');\n        }\n        if (i === 0) {\n            if (props.comma)\n                onError(props.comma, 'UNEXPECTED_TOKEN', `Unexpected , in ${fcName}`);\n        }\n        else {\n            if (!props.comma)\n                onError(props.start, 'MISSING_CHAR', `Missing , between ${fcName} items`);\n            if (props.comment) {\n                let prevItemComment = '';\n                loop: for (const st of start) {\n                    switch (st.type) {\n                        case 'comma':\n                        case 'space':\n                            break;\n                        case 'comment':\n                            prevItemComment = st.source.substring(1);\n                            break loop;\n                        default:\n                            break loop;\n                    }\n                }\n                if (prevItemComment) {\n                    let prev = coll.items[coll.items.length - 1];\n                    if (Node.isPair(prev))\n                        prev = prev.value ?? prev.key;\n                    if (prev.comment)\n                        prev.comment += '\\n' + prevItemComment;\n                    else\n                        prev.comment = prevItemComment;\n                    props.comment = props.comment.substring(prevItemComment.length + 1);\n                }\n            }\n        }\n        if (!isMap && !sep && !props.found) {\n            // item is a value in a seq\n            // → key & sep are empty, start does not include ? or :\n            const valueNode = value\n                ? composeNode(ctx, value, props, onError)\n                : composeEmptyNode(ctx, props.end, sep, null, props, onError);\n            coll.items.push(valueNode);\n            offset = valueNode.range[2];\n            if (isBlock(value))\n                onError(valueNode.range, 'BLOCK_IN_FLOW', blockMsg);\n        }\n        else {\n            // item is a key+value pair\n            // key value\n            const keyStart = props.end;\n            const keyNode = key\n                ? composeNode(ctx, key, props, onError)\n                : composeEmptyNode(ctx, keyStart, start, null, props, onError);\n            if (isBlock(key))\n                onError(keyNode.range, 'BLOCK_IN_FLOW', blockMsg);\n            // value properties\n            const valueProps = resolveProps.resolveProps(sep ?? [], {\n                flow: fcName,\n                indicator: 'map-value-ind',\n                next: value,\n                offset: keyNode.range[2],\n                onError,\n                startOnNewline: false\n            });\n            if (valueProps.found) {\n                if (!isMap && !props.found && ctx.options.strict) {\n                    if (sep)\n                        for (const st of sep) {\n                            if (st === valueProps.found)\n                                break;\n                            if (st.type === 'newline') {\n                                onError(st, 'MULTILINE_IMPLICIT_KEY', 'Implicit keys of flow sequence pairs need to be on a single line');\n                                break;\n                            }\n                        }\n                    if (props.start < valueProps.found.offset - 1024)\n                        onError(valueProps.found, 'KEY_OVER_1024_CHARS', 'The : indicator must be at most 1024 chars after the start of an implicit flow sequence key');\n                }\n            }\n            else if (value) {\n                if ('source' in value && value.source && value.source[0] === ':')\n                    onError(value, 'MISSING_CHAR', `Missing space after : in ${fcName}`);\n                else\n                    onError(valueProps.start, 'MISSING_CHAR', `Missing , or : between ${fcName} items`);\n            }\n            // value value\n            const valueNode = value\n                ? composeNode(ctx, value, valueProps, onError)\n                : valueProps.found\n                    ? composeEmptyNode(ctx, valueProps.end, sep, null, valueProps, onError)\n                    : null;\n            if (valueNode) {\n                if (isBlock(value))\n                    onError(valueNode.range, 'BLOCK_IN_FLOW', blockMsg);\n            }\n            else if (valueProps.comment) {\n                if (keyNode.comment)\n                    keyNode.comment += '\\n' + valueProps.comment;\n                else\n                    keyNode.comment = valueProps.comment;\n            }\n            const pair = new Pair.Pair(keyNode, valueNode);\n            if (ctx.options.keepSourceTokens)\n                pair.srcToken = collItem;\n            if (isMap) {\n                const map = coll;\n                if (utilMapIncludes.mapIncludes(ctx, map.items, keyNode))\n                    onError(keyStart, 'DUPLICATE_KEY', 'Map keys must be unique');\n                map.items.push(pair);\n            }\n            else {\n                const map = new YAMLMap.YAMLMap(ctx.schema);\n                map.flow = true;\n                map.items.push(pair);\n                coll.items.push(map);\n            }\n            offset = valueNode ? valueNode.range[2] : valueProps.end;\n        }\n    }\n    const expectedEnd = isMap ? '}' : ']';\n    const [ce, ...ee] = fc.end;\n    let cePos = offset;\n    if (ce && ce.source === expectedEnd)\n        cePos = ce.offset + ce.source.length;\n    else {\n        const name = fcName[0].toUpperCase() + fcName.substring(1);\n        const msg = atRoot\n            ? `${name} must end with a ${expectedEnd}`\n            : `${name} in block collection must be sufficiently indented and end with a ${expectedEnd}`;\n        onError(offset, atRoot ? 'MISSING_CHAR' : 'BAD_INDENT', msg);\n        if (ce && ce.source.length !== 1)\n            ee.unshift(ce);\n    }\n    if (ee.length > 0) {\n        const end = resolveEnd.resolveEnd(ee, cePos, ctx.options.strict, onError);\n        if (end.comment) {\n            if (coll.comment)\n                coll.comment += '\\n' + end.comment;\n            else\n                coll.comment = end.comment;\n        }\n        coll.range = [fc.offset, cePos, end.offset];\n    }\n    else {\n        coll.range = [fc.offset, cePos, cePos];\n    }\n    return coll;\n}\n\nexports.resolveFlowCollection = resolveFlowCollection;\n","'use strict';\n\nvar Scalar = require('../nodes/Scalar.js');\nvar resolveEnd = require('./resolve-end.js');\n\nfunction resolveFlowScalar(scalar, strict, onError) {\n    const { offset, type, source, end } = scalar;\n    let _type;\n    let value;\n    const _onError = (rel, code, msg) => onError(offset + rel, code, msg);\n    switch (type) {\n        case 'scalar':\n            _type = Scalar.Scalar.PLAIN;\n            value = plainValue(source, _onError);\n            break;\n        case 'single-quoted-scalar':\n            _type = Scalar.Scalar.QUOTE_SINGLE;\n            value = singleQuotedValue(source, _onError);\n            break;\n        case 'double-quoted-scalar':\n            _type = Scalar.Scalar.QUOTE_DOUBLE;\n            value = doubleQuotedValue(source, _onError);\n            break;\n        /* istanbul ignore next should not happen */\n        default:\n            onError(scalar, 'UNEXPECTED_TOKEN', `Expected a flow scalar value, but found: ${type}`);\n            return {\n                value: '',\n                type: null,\n                comment: '',\n                range: [offset, offset + source.length, offset + source.length]\n            };\n    }\n    const valueEnd = offset + source.length;\n    const re = resolveEnd.resolveEnd(end, valueEnd, strict, onError);\n    return {\n        value,\n        type: _type,\n        comment: re.comment,\n        range: [offset, valueEnd, re.offset]\n    };\n}\nfunction plainValue(source, onError) {\n    let badChar = '';\n    switch (source[0]) {\n        /* istanbul ignore next should not happen */\n        case '\\t':\n            badChar = 'a tab character';\n            break;\n        case ',':\n            badChar = 'flow indicator character ,';\n            break;\n        case '%':\n            badChar = 'directive indicator character %';\n            break;\n        case '|':\n        case '>': {\n            badChar = `block scalar indicator ${source[0]}`;\n            break;\n        }\n        case '@':\n        case '`': {\n            badChar = `reserved character ${source[0]}`;\n            break;\n        }\n    }\n    if (badChar)\n        onError(0, 'BAD_SCALAR_START', `Plain value cannot start with ${badChar}`);\n    return foldLines(source);\n}\nfunction singleQuotedValue(source, onError) {\n    if (source[source.length - 1] !== \"'\" || source.length === 1)\n        onError(source.length, 'MISSING_CHAR', \"Missing closing 'quote\");\n    return foldLines(source.slice(1, -1)).replace(/''/g, \"'\");\n}\nfunction foldLines(source) {\n    /**\n     * The negative lookbehind here and in the `re` RegExp is to\n     * prevent causing a polynomial search time in certain cases.\n     *\n     * The try-catch is for Safari, which doesn't support this yet:\n     * https://caniuse.com/js-regexp-lookbehind\n     */\n    let first, line;\n    try {\n        first = new RegExp('(.*?)(?<![ \\t])[ \\t]*\\r?\\n', 'sy');\n        line = new RegExp('[ \\t]*(.*?)(?:(?<![ \\t])[ \\t]*)?\\r?\\n', 'sy');\n    }\n    catch (_) {\n        first = /(.*?)[ \\t]*\\r?\\n/sy;\n        line = /[ \\t]*(.*?)[ \\t]*\\r?\\n/sy;\n    }\n    let match = first.exec(source);\n    if (!match)\n        return source;\n    let res = match[1];\n    let sep = ' ';\n    let pos = first.lastIndex;\n    line.lastIndex = pos;\n    while ((match = line.exec(source))) {\n        if (match[1] === '') {\n            if (sep === '\\n')\n                res += sep;\n            else\n                sep = '\\n';\n        }\n        else {\n            res += sep + match[1];\n            sep = ' ';\n        }\n        pos = line.lastIndex;\n    }\n    const last = /[ \\t]*(.*)/sy;\n    last.lastIndex = pos;\n    match = last.exec(source);\n    return res + sep + (match?.[1] ?? '');\n}\nfunction doubleQuotedValue(source, onError) {\n    let res = '';\n    for (let i = 1; i < source.length - 1; ++i) {\n        const ch = source[i];\n        if (ch === '\\r' && source[i + 1] === '\\n')\n            continue;\n        if (ch === '\\n') {\n            const { fold, offset } = foldNewline(source, i);\n            res += fold;\n            i = offset;\n        }\n        else if (ch === '\\\\') {\n            let next = source[++i];\n            const cc = escapeCodes[next];\n            if (cc)\n                res += cc;\n            else if (next === '\\n') {\n                // skip escaped newlines, but still trim the following line\n                next = source[i + 1];\n                while (next === ' ' || next === '\\t')\n                    next = source[++i + 1];\n            }\n            else if (next === '\\r' && source[i + 1] === '\\n') {\n                // skip escaped CRLF newlines, but still trim the following line\n                next = source[++i + 1];\n                while (next === ' ' || next === '\\t')\n                    next = source[++i + 1];\n            }\n            else if (next === 'x' || next === 'u' || next === 'U') {\n                const length = { x: 2, u: 4, U: 8 }[next];\n                res += parseCharCode(source, i + 1, length, onError);\n                i += length;\n            }\n            else {\n                const raw = source.substr(i - 1, 2);\n                onError(i - 1, 'BAD_DQ_ESCAPE', `Invalid escape sequence ${raw}`);\n                res += raw;\n            }\n        }\n        else if (ch === ' ' || ch === '\\t') {\n            // trim trailing whitespace\n            const wsStart = i;\n            let next = source[i + 1];\n            while (next === ' ' || next === '\\t')\n                next = source[++i + 1];\n            if (next !== '\\n' && !(next === '\\r' && source[i + 2] === '\\n'))\n                res += i > wsStart ? source.slice(wsStart, i + 1) : ch;\n        }\n        else {\n            res += ch;\n        }\n    }\n    if (source[source.length - 1] !== '\"' || source.length === 1)\n        onError(source.length, 'MISSING_CHAR', 'Missing closing \"quote');\n    return res;\n}\n/**\n * Fold a single newline into a space, multiple newlines to N - 1 newlines.\n * Presumes `source[offset] === '\\n'`\n */\nfunction foldNewline(source, offset) {\n    let fold = '';\n    let ch = source[offset + 1];\n    while (ch === ' ' || ch === '\\t' || ch === '\\n' || ch === '\\r') {\n        if (ch === '\\r' && source[offset + 2] !== '\\n')\n            break;\n        if (ch === '\\n')\n            fold += '\\n';\n        offset += 1;\n        ch = source[offset + 1];\n    }\n    if (!fold)\n        fold = ' ';\n    return { fold, offset };\n}\nconst escapeCodes = {\n    '0': '\\0',\n    a: '\\x07',\n    b: '\\b',\n    e: '\\x1b',\n    f: '\\f',\n    n: '\\n',\n    r: '\\r',\n    t: '\\t',\n    v: '\\v',\n    N: '\\u0085',\n    _: '\\u00a0',\n    L: '\\u2028',\n    P: '\\u2029',\n    ' ': ' ',\n    '\"': '\"',\n    '/': '/',\n    '\\\\': '\\\\',\n    '\\t': '\\t'\n};\nfunction parseCharCode(source, offset, length, onError) {\n    const cc = source.substr(offset, length);\n    const ok = cc.length === length && /^[0-9a-fA-F]+$/.test(cc);\n    const code = ok ? parseInt(cc, 16) : NaN;\n    if (isNaN(code)) {\n        const raw = source.substr(offset - 2, length + 2);\n        onError(offset - 2, 'BAD_DQ_ESCAPE', `Invalid escape sequence ${raw}`);\n        return raw;\n    }\n    return String.fromCodePoint(code);\n}\n\nexports.resolveFlowScalar = resolveFlowScalar;\n","'use strict';\n\nfunction resolveProps(tokens, { flow, indicator, next, offset, onError, startOnNewline }) {\n    let spaceBefore = false;\n    let atNewline = startOnNewline;\n    let hasSpace = startOnNewline;\n    let comment = '';\n    let commentSep = '';\n    let hasNewline = false;\n    let hasNewlineAfterProp = false;\n    let reqSpace = false;\n    let anchor = null;\n    let tag = null;\n    let comma = null;\n    let found = null;\n    let start = null;\n    for (const token of tokens) {\n        if (reqSpace) {\n            if (token.type !== 'space' &&\n                token.type !== 'newline' &&\n                token.type !== 'comma')\n                onError(token.offset, 'MISSING_CHAR', 'Tags and anchors must be separated from the next token by white space');\n            reqSpace = false;\n        }\n        switch (token.type) {\n            case 'space':\n                // At the doc level, tabs at line start may be parsed\n                // as leading white space rather than indentation.\n                // In a flow collection, only the parser handles indent.\n                if (!flow &&\n                    atNewline &&\n                    indicator !== 'doc-start' &&\n                    token.source[0] === '\\t')\n                    onError(token, 'TAB_AS_INDENT', 'Tabs are not allowed as indentation');\n                hasSpace = true;\n                break;\n            case 'comment': {\n                if (!hasSpace)\n                    onError(token, 'MISSING_CHAR', 'Comments must be separated from other tokens by white space characters');\n                const cb = token.source.substring(1) || ' ';\n                if (!comment)\n                    comment = cb;\n                else\n                    comment += commentSep + cb;\n                commentSep = '';\n                atNewline = false;\n                break;\n            }\n            case 'newline':\n                if (atNewline) {\n                    if (comment)\n                        comment += token.source;\n                    else\n                        spaceBefore = true;\n                }\n                else\n                    commentSep += token.source;\n                atNewline = true;\n                hasNewline = true;\n                if (anchor || tag)\n                    hasNewlineAfterProp = true;\n                hasSpace = true;\n                break;\n            case 'anchor':\n                if (anchor)\n                    onError(token, 'MULTIPLE_ANCHORS', 'A node can have at most one anchor');\n                if (token.source.endsWith(':'))\n                    onError(token.offset + token.source.length - 1, 'BAD_ALIAS', 'Anchor ending in : is ambiguous', true);\n                anchor = token;\n                if (start === null)\n                    start = token.offset;\n                atNewline = false;\n                hasSpace = false;\n                reqSpace = true;\n                break;\n            case 'tag': {\n                if (tag)\n                    onError(token, 'MULTIPLE_TAGS', 'A node can have at most one tag');\n                tag = token;\n                if (start === null)\n                    start = token.offset;\n                atNewline = false;\n                hasSpace = false;\n                reqSpace = true;\n                break;\n            }\n            case indicator:\n                // Could here handle preceding comments differently\n                if (anchor || tag)\n                    onError(token, 'BAD_PROP_ORDER', `Anchors and tags must be after the ${token.source} indicator`);\n                if (found)\n                    onError(token, 'UNEXPECTED_TOKEN', `Unexpected ${token.source} in ${flow ?? 'collection'}`);\n                found = token;\n                atNewline = false;\n                hasSpace = false;\n                break;\n            case 'comma':\n                if (flow) {\n                    if (comma)\n                        onError(token, 'UNEXPECTED_TOKEN', `Unexpected , in ${flow}`);\n                    comma = token;\n                    atNewline = false;\n                    hasSpace = false;\n                    break;\n                }\n            // else fallthrough\n            default:\n                onError(token, 'UNEXPECTED_TOKEN', `Unexpected ${token.type} token`);\n                atNewline = false;\n                hasSpace = false;\n        }\n    }\n    const last = tokens[tokens.length - 1];\n    const end = last ? last.offset + last.source.length : offset;\n    if (reqSpace &&\n        next &&\n        next.type !== 'space' &&\n        next.type !== 'newline' &&\n        next.type !== 'comma' &&\n        (next.type !== 'scalar' || next.source !== ''))\n        onError(next.offset, 'MISSING_CHAR', 'Tags and anchors must be separated from the next token by white space');\n    return {\n        comma,\n        found,\n        spaceBefore,\n        comment,\n        hasNewline,\n        hasNewlineAfterProp,\n        anchor,\n        tag,\n        end,\n        start: start ?? end\n    };\n}\n\nexports.resolveProps = resolveProps;\n","'use strict';\n\nfunction containsNewline(key) {\n    if (!key)\n        return null;\n    switch (key.type) {\n        case 'alias':\n        case 'scalar':\n        case 'double-quoted-scalar':\n        case 'single-quoted-scalar':\n            if (key.source.includes('\\n'))\n                return true;\n            if (key.end)\n                for (const st of key.end)\n                    if (st.type === 'newline')\n                        return true;\n            return false;\n        case 'flow-collection':\n            for (const it of key.items) {\n                for (const st of it.start)\n                    if (st.type === 'newline')\n                        return true;\n                if (it.sep)\n                    for (const st of it.sep)\n                        if (st.type === 'newline')\n                            return true;\n                if (containsNewline(it.key) || containsNewline(it.value))\n                    return true;\n            }\n            return false;\n        default:\n            return true;\n    }\n}\n\nexports.containsNewline = containsNewline;\n","'use strict';\n\nfunction emptyScalarPosition(offset, before, pos) {\n    if (before) {\n        if (pos === null)\n            pos = before.length;\n        for (let i = pos - 1; i >= 0; --i) {\n            let st = before[i];\n            switch (st.type) {\n                case 'space':\n                case 'comment':\n                case 'newline':\n                    offset -= st.source.length;\n                    continue;\n            }\n            // Technically, an empty scalar is immediately after the last non-empty\n            // node, but it's more useful to place it after any whitespace.\n            st = before[++i];\n            while (st?.type === 'space') {\n                offset += st.source.length;\n                st = before[++i];\n            }\n            break;\n        }\n    }\n    return offset;\n}\n\nexports.emptyScalarPosition = emptyScalarPosition;\n","'use strict';\n\nvar utilContainsNewline = require('./util-contains-newline.js');\n\nfunction flowIndentCheck(indent, fc, onError) {\n    if (fc?.type === 'flow-collection') {\n        const end = fc.end[0];\n        if (end.indent === indent &&\n            (end.source === ']' || end.source === '}') &&\n            utilContainsNewline.containsNewline(fc)) {\n            const msg = 'Flow end indicator should be more indented than parent';\n            onError(end, 'BAD_INDENT', msg, true);\n        }\n    }\n}\n\nexports.flowIndentCheck = flowIndentCheck;\n","'use strict';\n\nvar Node = require('../nodes/Node.js');\n\nfunction mapIncludes(ctx, items, search) {\n    const { uniqueKeys } = ctx.options;\n    if (uniqueKeys === false)\n        return false;\n    const isEqual = typeof uniqueKeys === 'function'\n        ? uniqueKeys\n        : (a, b) => a === b ||\n            (Node.isScalar(a) &&\n                Node.isScalar(b) &&\n                a.value === b.value &&\n                !(a.value === '<<' && ctx.schema.merge));\n    return items.some(pair => isEqual(pair.key, search));\n}\n\nexports.mapIncludes = mapIncludes;\n","'use strict';\n\nvar Alias = require('../nodes/Alias.js');\nvar Collection = require('../nodes/Collection.js');\nvar Node = require('../nodes/Node.js');\nvar Pair = require('../nodes/Pair.js');\nvar toJS = require('../nodes/toJS.js');\nvar Schema = require('../schema/Schema.js');\nvar stringify = require('../stringify/stringify.js');\nvar stringifyDocument = require('../stringify/stringifyDocument.js');\nvar anchors = require('./anchors.js');\nvar applyReviver = require('./applyReviver.js');\nvar createNode = require('./createNode.js');\nvar directives = require('./directives.js');\n\nclass Document {\n    constructor(value, replacer, options) {\n        /** A comment before this Document */\n        this.commentBefore = null;\n        /** A comment immediately after this Document */\n        this.comment = null;\n        /** Errors encountered during parsing. */\n        this.errors = [];\n        /** Warnings encountered during parsing. */\n        this.warnings = [];\n        Object.defineProperty(this, Node.NODE_TYPE, { value: Node.DOC });\n        let _replacer = null;\n        if (typeof replacer === 'function' || Array.isArray(replacer)) {\n            _replacer = replacer;\n        }\n        else if (options === undefined && replacer) {\n            options = replacer;\n            replacer = undefined;\n        }\n        const opt = Object.assign({\n            intAsBigInt: false,\n            keepSourceTokens: false,\n            logLevel: 'warn',\n            prettyErrors: true,\n            strict: true,\n            uniqueKeys: true,\n            version: '1.2'\n        }, options);\n        this.options = opt;\n        let { version } = opt;\n        if (options?._directives) {\n            this.directives = options._directives.atDocument();\n            if (this.directives.yaml.explicit)\n                version = this.directives.yaml.version;\n        }\n        else\n            this.directives = new directives.Directives({ version });\n        this.setSchema(version, options);\n        if (value === undefined)\n            this.contents = null;\n        else {\n            this.contents = this.createNode(value, _replacer, options);\n        }\n    }\n    /**\n     * Create a deep copy of this Document and its contents.\n     *\n     * Custom Node values that inherit from `Object` still refer to their original instances.\n     */\n    clone() {\n        const copy = Object.create(Document.prototype, {\n            [Node.NODE_TYPE]: { value: Node.DOC }\n        });\n        copy.commentBefore = this.commentBefore;\n        copy.comment = this.comment;\n        copy.errors = this.errors.slice();\n        copy.warnings = this.warnings.slice();\n        copy.options = Object.assign({}, this.options);\n        if (this.directives)\n            copy.directives = this.directives.clone();\n        copy.schema = this.schema.clone();\n        copy.contents = Node.isNode(this.contents)\n            ? this.contents.clone(copy.schema)\n            : this.contents;\n        if (this.range)\n            copy.range = this.range.slice();\n        return copy;\n    }\n    /** Adds a value to the document. */\n    add(value) {\n        if (assertCollection(this.contents))\n            this.contents.add(value);\n    }\n    /** Adds a value to the document. */\n    addIn(path, value) {\n        if (assertCollection(this.contents))\n            this.contents.addIn(path, value);\n    }\n    /**\n     * Create a new `Alias` node, ensuring that the target `node` has the required anchor.\n     *\n     * If `node` already has an anchor, `name` is ignored.\n     * Otherwise, the `node.anchor` value will be set to `name`,\n     * or if an anchor with that name is already present in the document,\n     * `name` will be used as a prefix for a new unique anchor.\n     * If `name` is undefined, the generated anchor will use 'a' as a prefix.\n     */\n    createAlias(node, name) {\n        if (!node.anchor) {\n            const prev = anchors.anchorNames(this);\n            node.anchor =\n                // eslint-disable-next-line @typescript-eslint/prefer-nullish-coalescing\n                !name || prev.has(name) ? anchors.findNewAnchor(name || 'a', prev) : name;\n        }\n        return new Alias.Alias(node.anchor);\n    }\n    createNode(value, replacer, options) {\n        let _replacer = undefined;\n        if (typeof replacer === 'function') {\n            value = replacer.call({ '': value }, '', value);\n            _replacer = replacer;\n        }\n        else if (Array.isArray(replacer)) {\n            const keyToStr = (v) => typeof v === 'number' || v instanceof String || v instanceof Number;\n            const asStr = replacer.filter(keyToStr).map(String);\n            if (asStr.length > 0)\n                replacer = replacer.concat(asStr);\n            _replacer = replacer;\n        }\n        else if (options === undefined && replacer) {\n            options = replacer;\n            replacer = undefined;\n        }\n        const { aliasDuplicateObjects, anchorPrefix, flow, keepUndefined, onTagObj, tag } = options ?? {};\n        const { onAnchor, setAnchors, sourceObjects } = anchors.createNodeAnchors(this, \n        // eslint-disable-next-line @typescript-eslint/prefer-nullish-coalescing\n        anchorPrefix || 'a');\n        const ctx = {\n            aliasDuplicateObjects: aliasDuplicateObjects ?? true,\n            keepUndefined: keepUndefined ?? false,\n            onAnchor,\n            onTagObj,\n            replacer: _replacer,\n            schema: this.schema,\n            sourceObjects\n        };\n        const node = createNode.createNode(value, tag, ctx);\n        if (flow && Node.isCollection(node))\n            node.flow = true;\n        setAnchors();\n        return node;\n    }\n    /**\n     * Convert a key and a value into a `Pair` using the current schema,\n     * recursively wrapping all values as `Scalar` or `Collection` nodes.\n     */\n    createPair(key, value, options = {}) {\n        const k = this.createNode(key, null, options);\n        const v = this.createNode(value, null, options);\n        return new Pair.Pair(k, v);\n    }\n    /**\n     * Removes a value from the document.\n     * @returns `true` if the item was found and removed.\n     */\n    delete(key) {\n        return assertCollection(this.contents) ? this.contents.delete(key) : false;\n    }\n    /**\n     * Removes a value from the document.\n     * @returns `true` if the item was found and removed.\n     */\n    deleteIn(path) {\n        if (Collection.isEmptyPath(path)) {\n            if (this.contents == null)\n                return false;\n            this.contents = null;\n            return true;\n        }\n        return assertCollection(this.contents)\n            ? this.contents.deleteIn(path)\n            : false;\n    }\n    /**\n     * Returns item at `key`, or `undefined` if not found. By default unwraps\n     * scalar values from their surrounding node; to disable set `keepScalar` to\n     * `true` (collections are always returned intact).\n     */\n    get(key, keepScalar) {\n        return Node.isCollection(this.contents)\n            ? this.contents.get(key, keepScalar)\n            : undefined;\n    }\n    /**\n     * Returns item at `path`, or `undefined` if not found. By default unwraps\n     * scalar values from their surrounding node; to disable set `keepScalar` to\n     * `true` (collections are always returned intact).\n     */\n    getIn(path, keepScalar) {\n        if (Collection.isEmptyPath(path))\n            return !keepScalar && Node.isScalar(this.contents)\n                ? this.contents.value\n                : this.contents;\n        return Node.isCollection(this.contents)\n            ? this.contents.getIn(path, keepScalar)\n            : undefined;\n    }\n    /**\n     * Checks if the document includes a value with the key `key`.\n     */\n    has(key) {\n        return Node.isCollection(this.contents) ? this.contents.has(key) : false;\n    }\n    /**\n     * Checks if the document includes a value at `path`.\n     */\n    hasIn(path) {\n        if (Collection.isEmptyPath(path))\n            return this.contents !== undefined;\n        return Node.isCollection(this.contents) ? this.contents.hasIn(path) : false;\n    }\n    /**\n     * Sets a value in this document. For `!!set`, `value` needs to be a\n     * boolean to add/remove the item from the set.\n     */\n    set(key, value) {\n        if (this.contents == null) {\n            this.contents = Collection.collectionFromPath(this.schema, [key], value);\n        }\n        else if (assertCollection(this.contents)) {\n            this.contents.set(key, value);\n        }\n    }\n    /**\n     * Sets a value in this document. For `!!set`, `value` needs to be a\n     * boolean to add/remove the item from the set.\n     */\n    setIn(path, value) {\n        if (Collection.isEmptyPath(path))\n            this.contents = value;\n        else if (this.contents == null) {\n            this.contents = Collection.collectionFromPath(this.schema, Array.from(path), value);\n        }\n        else if (assertCollection(this.contents)) {\n            this.contents.setIn(path, value);\n        }\n    }\n    /**\n     * Change the YAML version and schema used by the document.\n     * A `null` version disables support for directives, explicit tags, anchors, and aliases.\n     * It also requires the `schema` option to be given as a `Schema` instance value.\n     *\n     * Overrides all previously set schema options.\n     */\n    setSchema(version, options = {}) {\n        if (typeof version === 'number')\n            version = String(version);\n        let opt;\n        switch (version) {\n            case '1.1':\n                if (this.directives)\n                    this.directives.yaml.version = '1.1';\n                else\n                    this.directives = new directives.Directives({ version: '1.1' });\n                opt = { merge: true, resolveKnownTags: false, schema: 'yaml-1.1' };\n                break;\n            case '1.2':\n            case 'next':\n                if (this.directives)\n                    this.directives.yaml.version = version;\n                else\n                    this.directives = new directives.Directives({ version });\n                opt = { merge: false, resolveKnownTags: true, schema: 'core' };\n                break;\n            case null:\n                if (this.directives)\n                    delete this.directives;\n                opt = null;\n                break;\n            default: {\n                const sv = JSON.stringify(version);\n                throw new Error(`Expected '1.1', '1.2' or null as first argument, but found: ${sv}`);\n            }\n        }\n        // Not using `instanceof Schema` to allow for duck typing\n        if (options.schema instanceof Object)\n            this.schema = options.schema;\n        else if (opt)\n            this.schema = new Schema.Schema(Object.assign(opt, options));\n        else\n            throw new Error(`With a null YAML version, the { schema: Schema } option is required`);\n    }\n    // json & jsonArg are only used from toJSON()\n    toJS({ json, jsonArg, mapAsMap, maxAliasCount, onAnchor, reviver } = {}) {\n        const ctx = {\n            anchors: new Map(),\n            doc: this,\n            keep: !json,\n            mapAsMap: mapAsMap === true,\n            mapKeyWarned: false,\n            maxAliasCount: typeof maxAliasCount === 'number' ? maxAliasCount : 100,\n            stringify: stringify.stringify\n        };\n        const res = toJS.toJS(this.contents, jsonArg ?? '', ctx);\n        if (typeof onAnchor === 'function')\n            for (const { count, res } of ctx.anchors.values())\n                onAnchor(res, count);\n        return typeof reviver === 'function'\n            ? applyReviver.applyReviver(reviver, { '': res }, '', res)\n            : res;\n    }\n    /**\n     * A JSON representation of the document `contents`.\n     *\n     * @param jsonArg Used by `JSON.stringify` to indicate the array index or\n     *   property name.\n     */\n    toJSON(jsonArg, onAnchor) {\n        return this.toJS({ json: true, jsonArg, mapAsMap: false, onAnchor });\n    }\n    /** A YAML representation of the document. */\n    toString(options = {}) {\n        if (this.errors.length > 0)\n            throw new Error('Document with errors cannot be stringified');\n        if ('indent' in options &&\n            (!Number.isInteger(options.indent) || Number(options.indent) <= 0)) {\n            const s = JSON.stringify(options.indent);\n            throw new Error(`\"indent\" option must be a positive integer, not ${s}`);\n        }\n        return stringifyDocument.stringifyDocument(this, options);\n    }\n}\nfunction assertCollection(contents) {\n    if (Node.isCollection(contents))\n        return true;\n    throw new Error('Expected a YAML collection as document contents');\n}\n\nexports.Document = Document;\n","'use strict';\n\nvar Node = require('../nodes/Node.js');\nvar visit = require('../visit.js');\n\n/**\n * Verify that the input string is a valid anchor.\n *\n * Will throw on errors.\n */\nfunction anchorIsValid(anchor) {\n    if (/[\\x00-\\x19\\s,[\\]{}]/.test(anchor)) {\n        const sa = JSON.stringify(anchor);\n        const msg = `Anchor must not contain whitespace or control characters: ${sa}`;\n        throw new Error(msg);\n    }\n    return true;\n}\nfunction anchorNames(root) {\n    const anchors = new Set();\n    visit.visit(root, {\n        Value(_key, node) {\n            if (node.anchor)\n                anchors.add(node.anchor);\n        }\n    });\n    return anchors;\n}\n/** Find a new anchor name with the given `prefix` and a one-indexed suffix. */\nfunction findNewAnchor(prefix, exclude) {\n    for (let i = 1; true; ++i) {\n        const name = `${prefix}${i}`;\n        if (!exclude.has(name))\n            return name;\n    }\n}\nfunction createNodeAnchors(doc, prefix) {\n    const aliasObjects = [];\n    const sourceObjects = new Map();\n    let prevAnchors = null;\n    return {\n        onAnchor: (source) => {\n            aliasObjects.push(source);\n            if (!prevAnchors)\n                prevAnchors = anchorNames(doc);\n            const anchor = findNewAnchor(prefix, prevAnchors);\n            prevAnchors.add(anchor);\n            return anchor;\n        },\n        /**\n         * With circular references, the source node is only resolved after all\n         * of its child nodes are. This is why anchors are set only after all of\n         * the nodes have been created.\n         */\n        setAnchors: () => {\n            for (const source of aliasObjects) {\n                const ref = sourceObjects.get(source);\n                if (typeof ref === 'object' &&\n                    ref.anchor &&\n                    (Node.isScalar(ref.node) || Node.isCollection(ref.node))) {\n                    ref.node.anchor = ref.anchor;\n                }\n                else {\n                    const error = new Error('Failed to resolve repeated object (this should not happen)');\n                    error.source = source;\n                    throw error;\n                }\n            }\n        },\n        sourceObjects\n    };\n}\n\nexports.anchorIsValid = anchorIsValid;\nexports.anchorNames = anchorNames;\nexports.createNodeAnchors = createNodeAnchors;\nexports.findNewAnchor = findNewAnchor;\n","'use strict';\n\n/**\n * Applies the JSON.parse reviver algorithm as defined in the ECMA-262 spec,\n * in section 24.5.1.1 \"Runtime Semantics: InternalizeJSONProperty\" of the\n * 2021 edition: https://tc39.es/ecma262/#sec-json.parse\n *\n * Includes extensions for handling Map and Set objects.\n */\nfunction applyReviver(reviver, obj, key, val) {\n    if (val && typeof val === 'object') {\n        if (Array.isArray(val)) {\n            for (let i = 0, len = val.length; i < len; ++i) {\n                const v0 = val[i];\n                const v1 = applyReviver(reviver, val, String(i), v0);\n                if (v1 === undefined)\n                    delete val[i];\n                else if (v1 !== v0)\n                    val[i] = v1;\n            }\n        }\n        else if (val instanceof Map) {\n            for (const k of Array.from(val.keys())) {\n                const v0 = val.get(k);\n                const v1 = applyReviver(reviver, val, k, v0);\n                if (v1 === undefined)\n                    val.delete(k);\n                else if (v1 !== v0)\n                    val.set(k, v1);\n            }\n        }\n        else if (val instanceof Set) {\n            for (const v0 of Array.from(val)) {\n                const v1 = applyReviver(reviver, val, v0, v0);\n                if (v1 === undefined)\n                    val.delete(v0);\n                else if (v1 !== v0) {\n                    val.delete(v0);\n                    val.add(v1);\n                }\n            }\n        }\n        else {\n            for (const [k, v0] of Object.entries(val)) {\n                const v1 = applyReviver(reviver, val, k, v0);\n                if (v1 === undefined)\n                    delete val[k];\n                else if (v1 !== v0)\n                    val[k] = v1;\n            }\n        }\n    }\n    return reviver.call(obj, key, val);\n}\n\nexports.applyReviver = applyReviver;\n","'use strict';\n\nvar Alias = require('../nodes/Alias.js');\nvar Node = require('../nodes/Node.js');\nvar Scalar = require('../nodes/Scalar.js');\n\nconst defaultTagPrefix = 'tag:yaml.org,2002:';\nfunction findTagObject(value, tagName, tags) {\n    if (tagName) {\n        const match = tags.filter(t => t.tag === tagName);\n        const tagObj = match.find(t => !t.format) ?? match[0];\n        if (!tagObj)\n            throw new Error(`Tag ${tagName} not found`);\n        return tagObj;\n    }\n    return tags.find(t => t.identify?.(value) && !t.format);\n}\nfunction createNode(value, tagName, ctx) {\n    if (Node.isDocument(value))\n        value = value.contents;\n    if (Node.isNode(value))\n        return value;\n    if (Node.isPair(value)) {\n        const map = ctx.schema[Node.MAP].createNode?.(ctx.schema, null, ctx);\n        map.items.push(value);\n        return map;\n    }\n    if (value instanceof String ||\n        value instanceof Number ||\n        value instanceof Boolean ||\n        (typeof BigInt !== 'undefined' && value instanceof BigInt) // not supported everywhere\n    ) {\n        // https://tc39.es/ecma262/#sec-serializejsonproperty\n        value = value.valueOf();\n    }\n    const { aliasDuplicateObjects, onAnchor, onTagObj, schema, sourceObjects } = ctx;\n    // Detect duplicate references to the same object & use Alias nodes for all\n    // after first. The `ref` wrapper allows for circular references to resolve.\n    let ref = undefined;\n    if (aliasDuplicateObjects && value && typeof value === 'object') {\n        ref = sourceObjects.get(value);\n        if (ref) {\n            if (!ref.anchor)\n                ref.anchor = onAnchor(value);\n            return new Alias.Alias(ref.anchor);\n        }\n        else {\n            ref = { anchor: null, node: null };\n            sourceObjects.set(value, ref);\n        }\n    }\n    if (tagName?.startsWith('!!'))\n        tagName = defaultTagPrefix + tagName.slice(2);\n    let tagObj = findTagObject(value, tagName, schema.tags);\n    if (!tagObj) {\n        if (value && typeof value.toJSON === 'function') {\n            // eslint-disable-next-line @typescript-eslint/no-unsafe-call\n            value = value.toJSON();\n        }\n        if (!value || typeof value !== 'object') {\n            const node = new Scalar.Scalar(value);\n            if (ref)\n                ref.node = node;\n            return node;\n        }\n        tagObj =\n            value instanceof Map\n                ? schema[Node.MAP]\n                : Symbol.iterator in Object(value)\n                    ? schema[Node.SEQ]\n                    : schema[Node.MAP];\n    }\n    if (onTagObj) {\n        onTagObj(tagObj);\n        delete ctx.onTagObj;\n    }\n    const node = tagObj?.createNode\n        ? tagObj.createNode(ctx.schema, value, ctx)\n        : new Scalar.Scalar(value);\n    if (tagName)\n        node.tag = tagName;\n    if (ref)\n        ref.node = node;\n    return node;\n}\n\nexports.createNode = createNode;\n","'use strict';\n\nvar Node = require('../nodes/Node.js');\nvar visit = require('../visit.js');\n\nconst escapeChars = {\n    '!': '%21',\n    ',': '%2C',\n    '[': '%5B',\n    ']': '%5D',\n    '{': '%7B',\n    '}': '%7D'\n};\nconst escapeTagName = (tn) => tn.replace(/[!,[\\]{}]/g, ch => escapeChars[ch]);\nclass Directives {\n    constructor(yaml, tags) {\n        /**\n         * The directives-end/doc-start marker `---`. If `null`, a marker may still be\n         * included in the document's stringified representation.\n         */\n        this.docStart = null;\n        /** The doc-end marker `...`.  */\n        this.docEnd = false;\n        this.yaml = Object.assign({}, Directives.defaultYaml, yaml);\n        this.tags = Object.assign({}, Directives.defaultTags, tags);\n    }\n    clone() {\n        const copy = new Directives(this.yaml, this.tags);\n        copy.docStart = this.docStart;\n        return copy;\n    }\n    /**\n     * During parsing, get a Directives instance for the current document and\n     * update the stream state according to the current version's spec.\n     */\n    atDocument() {\n        const res = new Directives(this.yaml, this.tags);\n        switch (this.yaml.version) {\n            case '1.1':\n                this.atNextDocument = true;\n                break;\n            case '1.2':\n                this.atNextDocument = false;\n                this.yaml = {\n                    explicit: Directives.defaultYaml.explicit,\n                    version: '1.2'\n                };\n                this.tags = Object.assign({}, Directives.defaultTags);\n                break;\n        }\n        return res;\n    }\n    /**\n     * @param onError - May be called even if the action was successful\n     * @returns `true` on success\n     */\n    add(line, onError) {\n        if (this.atNextDocument) {\n            this.yaml = { explicit: Directives.defaultYaml.explicit, version: '1.1' };\n            this.tags = Object.assign({}, Directives.defaultTags);\n            this.atNextDocument = false;\n        }\n        const parts = line.trim().split(/[ \\t]+/);\n        const name = parts.shift();\n        switch (name) {\n            case '%TAG': {\n                if (parts.length !== 2) {\n                    onError(0, '%TAG directive should contain exactly two parts');\n                    if (parts.length < 2)\n                        return false;\n                }\n                const [handle, prefix] = parts;\n                this.tags[handle] = prefix;\n                return true;\n            }\n            case '%YAML': {\n                this.yaml.explicit = true;\n                if (parts.length !== 1) {\n                    onError(0, '%YAML directive should contain exactly one part');\n                    return false;\n                }\n                const [version] = parts;\n                if (version === '1.1' || version === '1.2') {\n                    this.yaml.version = version;\n                    return true;\n                }\n                else {\n                    const isValid = /^\\d+\\.\\d+$/.test(version);\n                    onError(6, `Unsupported YAML version ${version}`, isValid);\n                    return false;\n                }\n            }\n            default:\n                onError(0, `Unknown directive ${name}`, true);\n                return false;\n        }\n    }\n    /**\n     * Resolves a tag, matching handles to those defined in %TAG directives.\n     *\n     * @returns Resolved tag, which may also be the non-specific tag `'!'` or a\n     *   `'!local'` tag, or `null` if unresolvable.\n     */\n    tagName(source, onError) {\n        if (source === '!')\n            return '!'; // non-specific tag\n        if (source[0] !== '!') {\n            onError(`Not a valid tag: ${source}`);\n            return null;\n        }\n        if (source[1] === '<') {\n            const verbatim = source.slice(2, -1);\n            if (verbatim === '!' || verbatim === '!!') {\n                onError(`Verbatim tags aren't resolved, so ${source} is invalid.`);\n                return null;\n            }\n            if (source[source.length - 1] !== '>')\n                onError('Verbatim tags must end with a >');\n            return verbatim;\n        }\n        const [, handle, suffix] = source.match(/^(.*!)([^!]*)$/);\n        if (!suffix)\n            onError(`The ${source} tag has no suffix`);\n        const prefix = this.tags[handle];\n        if (prefix)\n            return prefix + decodeURIComponent(suffix);\n        if (handle === '!')\n            return source; // local tag\n        onError(`Could not resolve tag: ${source}`);\n        return null;\n    }\n    /**\n     * Given a fully resolved tag, returns its printable string form,\n     * taking into account current tag prefixes and defaults.\n     */\n    tagString(tag) {\n        for (const [handle, prefix] of Object.entries(this.tags)) {\n            if (tag.startsWith(prefix))\n                return handle + escapeTagName(tag.substring(prefix.length));\n        }\n        return tag[0] === '!' ? tag : `!<${tag}>`;\n    }\n    toString(doc) {\n        const lines = this.yaml.explicit\n            ? [`%YAML ${this.yaml.version || '1.2'}`]\n            : [];\n        const tagEntries = Object.entries(this.tags);\n        let tagNames;\n        if (doc && tagEntries.length > 0 && Node.isNode(doc.contents)) {\n            const tags = {};\n            visit.visit(doc.contents, (_key, node) => {\n                if (Node.isNode(node) && node.tag)\n                    tags[node.tag] = true;\n            });\n            tagNames = Object.keys(tags);\n        }\n        else\n            tagNames = [];\n        for (const [handle, prefix] of tagEntries) {\n            if (handle === '!!' && prefix === 'tag:yaml.org,2002:')\n                continue;\n            if (!doc || tagNames.some(tn => tn.startsWith(prefix)))\n                lines.push(`%TAG ${handle} ${prefix}`);\n        }\n        return lines.join('\\n');\n    }\n}\nDirectives.defaultYaml = { explicit: false, version: '1.2' };\nDirectives.defaultTags = { '!!': 'tag:yaml.org,2002:' };\n\nexports.Directives = Directives;\n","'use strict';\n\nclass YAMLError extends Error {\n    constructor(name, pos, code, message) {\n        super();\n        this.name = name;\n        this.code = code;\n        this.message = message;\n        this.pos = pos;\n    }\n}\nclass YAMLParseError extends YAMLError {\n    constructor(pos, code, message) {\n        super('YAMLParseError', pos, code, message);\n    }\n}\nclass YAMLWarning extends YAMLError {\n    constructor(pos, code, message) {\n        super('YAMLWarning', pos, code, message);\n    }\n}\nconst prettifyError = (src, lc) => (error) => {\n    if (error.pos[0] === -1)\n        return;\n    error.linePos = error.pos.map(pos => lc.linePos(pos));\n    const { line, col } = error.linePos[0];\n    error.message += ` at line ${line}, column ${col}`;\n    let ci = col - 1;\n    let lineStr = src\n        .substring(lc.lineStarts[line - 1], lc.lineStarts[line])\n        .replace(/[\\n\\r]+$/, '');\n    // Trim to max 80 chars, keeping col position near the middle\n    if (ci >= 60 && lineStr.length > 80) {\n        const trimStart = Math.min(ci - 39, lineStr.length - 79);\n        lineStr = '…' + lineStr.substring(trimStart);\n        ci -= trimStart - 1;\n    }\n    if (lineStr.length > 80)\n        lineStr = lineStr.substring(0, 79) + '…';\n    // Include previous line in context if pointing at line start\n    if (line > 1 && /^ *$/.test(lineStr.substring(0, ci))) {\n        // Regexp won't match if start is trimmed\n        let prev = src.substring(lc.lineStarts[line - 2], lc.lineStarts[line - 1]);\n        if (prev.length > 80)\n            prev = prev.substring(0, 79) + '…\\n';\n        lineStr = prev + lineStr;\n    }\n    if (/[^ ]/.test(lineStr)) {\n        let count = 1;\n        const end = error.linePos[1];\n        if (end && end.line === line && end.col > col) {\n            count = Math.min(end.col - col, 80 - ci);\n        }\n        const pointer = ' '.repeat(ci) + '^'.repeat(count);\n        error.message += `:\\n\\n${lineStr}\\n${pointer}\\n`;\n    }\n};\n\nexports.YAMLError = YAMLError;\nexports.YAMLParseError = YAMLParseError;\nexports.YAMLWarning = YAMLWarning;\nexports.prettifyError = prettifyError;\n","'use strict';\n\nvar composer = require('./compose/composer.js');\nvar Document = require('./doc/Document.js');\nvar Schema = require('./schema/Schema.js');\nvar errors = require('./errors.js');\nvar Alias = require('./nodes/Alias.js');\nvar Node = require('./nodes/Node.js');\nvar Pair = require('./nodes/Pair.js');\nvar Scalar = require('./nodes/Scalar.js');\nvar YAMLMap = require('./nodes/YAMLMap.js');\nvar YAMLSeq = require('./nodes/YAMLSeq.js');\nvar cst = require('./parse/cst.js');\nvar lexer = require('./parse/lexer.js');\nvar lineCounter = require('./parse/line-counter.js');\nvar parser = require('./parse/parser.js');\nvar publicApi = require('./public-api.js');\nvar visit = require('./visit.js');\n\n\n\nexports.Composer = composer.Composer;\nexports.Document = Document.Document;\nexports.Schema = Schema.Schema;\nexports.YAMLError = errors.YAMLError;\nexports.YAMLParseError = errors.YAMLParseError;\nexports.YAMLWarning = errors.YAMLWarning;\nexports.Alias = Alias.Alias;\nexports.isAlias = Node.isAlias;\nexports.isCollection = Node.isCollection;\nexports.isDocument = Node.isDocument;\nexports.isMap = Node.isMap;\nexports.isNode = Node.isNode;\nexports.isPair = Node.isPair;\nexports.isScalar = Node.isScalar;\nexports.isSeq = Node.isSeq;\nexports.Pair = Pair.Pair;\nexports.Scalar = Scalar.Scalar;\nexports.YAMLMap = YAMLMap.YAMLMap;\nexports.YAMLSeq = YAMLSeq.YAMLSeq;\nexports.CST = cst;\nexports.Lexer = lexer.Lexer;\nexports.LineCounter = lineCounter.LineCounter;\nexports.Parser = parser.Parser;\nexports.parse = publicApi.parse;\nexports.parseAllDocuments = publicApi.parseAllDocuments;\nexports.parseDocument = publicApi.parseDocument;\nexports.stringify = publicApi.stringify;\nexports.visit = visit.visit;\nexports.visitAsync = visit.visitAsync;\n","'use strict';\n\nfunction debug(logLevel, ...messages) {\n    if (logLevel === 'debug')\n        console.log(...messages);\n}\nfunction warn(logLevel, warning) {\n    if (logLevel === 'debug' || logLevel === 'warn') {\n        if (typeof process !== 'undefined' && process.emitWarning)\n            process.emitWarning(warning);\n        else\n            console.warn(warning);\n    }\n}\n\nexports.debug = debug;\nexports.warn = warn;\n","'use strict';\n\nvar anchors = require('../doc/anchors.js');\nvar visit = require('../visit.js');\nvar Node = require('./Node.js');\n\nclass Alias extends Node.NodeBase {\n    constructor(source) {\n        super(Node.ALIAS);\n        this.source = source;\n        Object.defineProperty(this, 'tag', {\n            set() {\n                throw new Error('Alias nodes cannot have tags');\n            }\n        });\n    }\n    /**\n     * Resolve the value of this alias within `doc`, finding the last\n     * instance of the `source` anchor before this node.\n     */\n    resolve(doc) {\n        let found = undefined;\n        visit.visit(doc, {\n            Node: (_key, node) => {\n                if (node === this)\n                    return visit.visit.BREAK;\n                if (node.anchor === this.source)\n                    found = node;\n            }\n        });\n        return found;\n    }\n    toJSON(_arg, ctx) {\n        if (!ctx)\n            return { source: this.source };\n        const { anchors, doc, maxAliasCount } = ctx;\n        const source = this.resolve(doc);\n        if (!source) {\n            const msg = `Unresolved alias (the anchor must be set before the alias): ${this.source}`;\n            throw new ReferenceError(msg);\n        }\n        const data = anchors.get(source);\n        /* istanbul ignore if */\n        if (!data || data.res === undefined) {\n            const msg = 'This should not happen: Alias anchor was not resolved?';\n            throw new ReferenceError(msg);\n        }\n        if (maxAliasCount >= 0) {\n            data.count += 1;\n            if (data.aliasCount === 0)\n                data.aliasCount = getAliasCount(doc, source, anchors);\n            if (data.count * data.aliasCount > maxAliasCount) {\n                const msg = 'Excessive alias count indicates a resource exhaustion attack';\n                throw new ReferenceError(msg);\n            }\n        }\n        return data.res;\n    }\n    toString(ctx, _onComment, _onChompKeep) {\n        const src = `*${this.source}`;\n        if (ctx) {\n            anchors.anchorIsValid(this.source);\n            if (ctx.options.verifyAliasOrder && !ctx.anchors.has(this.source)) {\n                const msg = `Unresolved alias (the anchor must be set before the alias): ${this.source}`;\n                throw new Error(msg);\n            }\n            if (ctx.implicitKey)\n                return `${src} `;\n        }\n        return src;\n    }\n}\nfunction getAliasCount(doc, node, anchors) {\n    if (Node.isAlias(node)) {\n        const source = node.resolve(doc);\n        const anchor = anchors && source && anchors.get(source);\n        return anchor ? anchor.count * anchor.aliasCount : 0;\n    }\n    else if (Node.isCollection(node)) {\n        let count = 0;\n        for (const item of node.items) {\n            const c = getAliasCount(doc, item, anchors);\n            if (c > count)\n                count = c;\n        }\n        return count;\n    }\n    else if (Node.isPair(node)) {\n        const kc = getAliasCount(doc, node.key, anchors);\n        const vc = getAliasCount(doc, node.value, anchors);\n        return Math.max(kc, vc);\n    }\n    return 1;\n}\n\nexports.Alias = Alias;\n","'use strict';\n\nvar createNode = require('../doc/createNode.js');\nvar Node = require('./Node.js');\n\nfunction collectionFromPath(schema, path, value) {\n    let v = value;\n    for (let i = path.length - 1; i >= 0; --i) {\n        const k = path[i];\n        if (typeof k === 'number' && Number.isInteger(k) && k >= 0) {\n            const a = [];\n            a[k] = v;\n            v = a;\n        }\n        else {\n            v = new Map([[k, v]]);\n        }\n    }\n    return createNode.createNode(v, undefined, {\n        aliasDuplicateObjects: false,\n        keepUndefined: false,\n        onAnchor: () => {\n            throw new Error('This should not happen, please report a bug.');\n        },\n        schema,\n        sourceObjects: new Map()\n    });\n}\n// Type guard is intentionally a little wrong so as to be more useful,\n// as it does not cover untypable empty non-string iterables (e.g. []).\nconst isEmptyPath = (path) => path == null ||\n    (typeof path === 'object' && !!path[Symbol.iterator]().next().done);\nclass Collection extends Node.NodeBase {\n    constructor(type, schema) {\n        super(type);\n        Object.defineProperty(this, 'schema', {\n            value: schema,\n            configurable: true,\n            enumerable: false,\n            writable: true\n        });\n    }\n    /**\n     * Create a copy of this collection.\n     *\n     * @param schema - If defined, overwrites the original's schema\n     */\n    clone(schema) {\n        const copy = Object.create(Object.getPrototypeOf(this), Object.getOwnPropertyDescriptors(this));\n        if (schema)\n            copy.schema = schema;\n        copy.items = copy.items.map(it => Node.isNode(it) || Node.isPair(it) ? it.clone(schema) : it);\n        if (this.range)\n            copy.range = this.range.slice();\n        return copy;\n    }\n    /**\n     * Adds a value to the collection. For `!!map` and `!!omap` the value must\n     * be a Pair instance or a `{ key, value }` object, which may not have a key\n     * that already exists in the map.\n     */\n    addIn(path, value) {\n        if (isEmptyPath(path))\n            this.add(value);\n        else {\n            const [key, ...rest] = path;\n            const node = this.get(key, true);\n            if (Node.isCollection(node))\n                node.addIn(rest, value);\n            else if (node === undefined && this.schema)\n                this.set(key, collectionFromPath(this.schema, rest, value));\n            else\n                throw new Error(`Expected YAML collection at ${key}. Remaining path: ${rest}`);\n        }\n    }\n    /**\n     * Removes a value from the collection.\n     * @returns `true` if the item was found and removed.\n     */\n    deleteIn(path) {\n        const [key, ...rest] = path;\n        if (rest.length === 0)\n            return this.delete(key);\n        const node = this.get(key, true);\n        if (Node.isCollection(node))\n            return node.deleteIn(rest);\n        else\n            throw new Error(`Expected YAML collection at ${key}. Remaining path: ${rest}`);\n    }\n    /**\n     * Returns item at `key`, or `undefined` if not found. By default unwraps\n     * scalar values from their surrounding node; to disable set `keepScalar` to\n     * `true` (collections are always returned intact).\n     */\n    getIn(path, keepScalar) {\n        const [key, ...rest] = path;\n        const node = this.get(key, true);\n        if (rest.length === 0)\n            return !keepScalar && Node.isScalar(node) ? node.value : node;\n        else\n            return Node.isCollection(node) ? node.getIn(rest, keepScalar) : undefined;\n    }\n    hasAllNullValues(allowScalar) {\n        return this.items.every(node => {\n            if (!Node.isPair(node))\n                return false;\n            const n = node.value;\n            return (n == null ||\n                (allowScalar &&\n                    Node.isScalar(n) &&\n                    n.value == null &&\n                    !n.commentBefore &&\n                    !n.comment &&\n                    !n.tag));\n        });\n    }\n    /**\n     * Checks if the collection includes a value with the key `key`.\n     */\n    hasIn(path) {\n        const [key, ...rest] = path;\n        if (rest.length === 0)\n            return this.has(key);\n        const node = this.get(key, true);\n        return Node.isCollection(node) ? node.hasIn(rest) : false;\n    }\n    /**\n     * Sets a value in this collection. For `!!set`, `value` needs to be a\n     * boolean to add/remove the item from the set.\n     */\n    setIn(path, value) {\n        const [key, ...rest] = path;\n        if (rest.length === 0) {\n            this.set(key, value);\n        }\n        else {\n            const node = this.get(key, true);\n            if (Node.isCollection(node))\n                node.setIn(rest, value);\n            else if (node === undefined && this.schema)\n                this.set(key, collectionFromPath(this.schema, rest, value));\n            else\n                throw new Error(`Expected YAML collection at ${key}. Remaining path: ${rest}`);\n        }\n    }\n}\nCollection.maxFlowStringSingleLineLength = 60;\n\nexports.Collection = Collection;\nexports.collectionFromPath = collectionFromPath;\nexports.isEmptyPath = isEmptyPath;\n","'use strict';\n\nconst ALIAS = Symbol.for('yaml.alias');\nconst DOC = Symbol.for('yaml.document');\nconst MAP = Symbol.for('yaml.map');\nconst PAIR = Symbol.for('yaml.pair');\nconst SCALAR = Symbol.for('yaml.scalar');\nconst SEQ = Symbol.for('yaml.seq');\nconst NODE_TYPE = Symbol.for('yaml.node.type');\nconst isAlias = (node) => !!node && typeof node === 'object' && node[NODE_TYPE] === ALIAS;\nconst isDocument = (node) => !!node && typeof node === 'object' && node[NODE_TYPE] === DOC;\nconst isMap = (node) => !!node && typeof node === 'object' && node[NODE_TYPE] === MAP;\nconst isPair = (node) => !!node && typeof node === 'object' && node[NODE_TYPE] === PAIR;\nconst isScalar = (node) => !!node && typeof node === 'object' && node[NODE_TYPE] === SCALAR;\nconst isSeq = (node) => !!node && typeof node === 'object' && node[NODE_TYPE] === SEQ;\nfunction isCollection(node) {\n    if (node && typeof node === 'object')\n        switch (node[NODE_TYPE]) {\n            case MAP:\n            case SEQ:\n                return true;\n        }\n    return false;\n}\nfunction isNode(node) {\n    if (node && typeof node === 'object')\n        switch (node[NODE_TYPE]) {\n            case ALIAS:\n            case MAP:\n            case SCALAR:\n            case SEQ:\n                return true;\n        }\n    return false;\n}\nconst hasAnchor = (node) => (isScalar(node) || isCollection(node)) && !!node.anchor;\nclass NodeBase {\n    constructor(type) {\n        Object.defineProperty(this, NODE_TYPE, { value: type });\n    }\n    /** Create a copy of this node.  */\n    clone() {\n        const copy = Object.create(Object.getPrototypeOf(this), Object.getOwnPropertyDescriptors(this));\n        if (this.range)\n            copy.range = this.range.slice();\n        return copy;\n    }\n}\n\nexports.ALIAS = ALIAS;\nexports.DOC = DOC;\nexports.MAP = MAP;\nexports.NODE_TYPE = NODE_TYPE;\nexports.NodeBase = NodeBase;\nexports.PAIR = PAIR;\nexports.SCALAR = SCALAR;\nexports.SEQ = SEQ;\nexports.hasAnchor = hasAnchor;\nexports.isAlias = isAlias;\nexports.isCollection = isCollection;\nexports.isDocument = isDocument;\nexports.isMap = isMap;\nexports.isNode = isNode;\nexports.isPair = isPair;\nexports.isScalar = isScalar;\nexports.isSeq = isSeq;\n","'use strict';\n\nvar createNode = require('../doc/createNode.js');\nvar stringifyPair = require('../stringify/stringifyPair.js');\nvar addPairToJSMap = require('./addPairToJSMap.js');\nvar Node = require('./Node.js');\n\nfunction createPair(key, value, ctx) {\n    const k = createNode.createNode(key, undefined, ctx);\n    const v = createNode.createNode(value, undefined, ctx);\n    return new Pair(k, v);\n}\nclass Pair {\n    constructor(key, value = null) {\n        Object.defineProperty(this, Node.NODE_TYPE, { value: Node.PAIR });\n        this.key = key;\n        this.value = value;\n    }\n    clone(schema) {\n        let { key, value } = this;\n        if (Node.isNode(key))\n            key = key.clone(schema);\n        if (Node.isNode(value))\n            value = value.clone(schema);\n        return new Pair(key, value);\n    }\n    toJSON(_, ctx) {\n        const pair = ctx?.mapAsMap ? new Map() : {};\n        return addPairToJSMap.addPairToJSMap(ctx, pair, this);\n    }\n    toString(ctx, onComment, onChompKeep) {\n        return ctx?.doc\n            ? stringifyPair.stringifyPair(this, ctx, onComment, onChompKeep)\n            : JSON.stringify(this);\n    }\n}\n\nexports.Pair = Pair;\nexports.createPair = createPair;\n","'use strict';\n\nvar Node = require('./Node.js');\nvar toJS = require('./toJS.js');\n\nconst isScalarValue = (value) => !value || (typeof value !== 'function' && typeof value !== 'object');\nclass Scalar extends Node.NodeBase {\n    constructor(value) {\n        super(Node.SCALAR);\n        this.value = value;\n    }\n    toJSON(arg, ctx) {\n        return ctx?.keep ? this.value : toJS.toJS(this.value, arg, ctx);\n    }\n    toString() {\n        return String(this.value);\n    }\n}\nScalar.BLOCK_FOLDED = 'BLOCK_FOLDED';\nScalar.BLOCK_LITERAL = 'BLOCK_LITERAL';\nScalar.PLAIN = 'PLAIN';\nScalar.QUOTE_DOUBLE = 'QUOTE_DOUBLE';\nScalar.QUOTE_SINGLE = 'QUOTE_SINGLE';\n\nexports.Scalar = Scalar;\nexports.isScalarValue = isScalarValue;\n","'use strict';\n\nvar stringifyCollection = require('../stringify/stringifyCollection.js');\nvar addPairToJSMap = require('./addPairToJSMap.js');\nvar Collection = require('./Collection.js');\nvar Node = require('./Node.js');\nvar Pair = require('./Pair.js');\nvar Scalar = require('./Scalar.js');\n\nfunction findPair(items, key) {\n    const k = Node.isScalar(key) ? key.value : key;\n    for (const it of items) {\n        if (Node.isPair(it)) {\n            if (it.key === key || it.key === k)\n                return it;\n            if (Node.isScalar(it.key) && it.key.value === k)\n                return it;\n        }\n    }\n    return undefined;\n}\nclass YAMLMap extends Collection.Collection {\n    constructor(schema) {\n        super(Node.MAP, schema);\n        this.items = [];\n    }\n    static get tagName() {\n        return 'tag:yaml.org,2002:map';\n    }\n    /**\n     * Adds a value to the collection.\n     *\n     * @param overwrite - If not set `true`, using a key that is already in the\n     *   collection will throw. Otherwise, overwrites the previous value.\n     */\n    add(pair, overwrite) {\n        let _pair;\n        if (Node.isPair(pair))\n            _pair = pair;\n        else if (!pair || typeof pair !== 'object' || !('key' in pair)) {\n            // In TypeScript, this never happens.\n            _pair = new Pair.Pair(pair, pair?.value);\n        }\n        else\n            _pair = new Pair.Pair(pair.key, pair.value);\n        const prev = findPair(this.items, _pair.key);\n        const sortEntries = this.schema?.sortMapEntries;\n        if (prev) {\n            if (!overwrite)\n                throw new Error(`Key ${_pair.key} already set`);\n            // For scalars, keep the old node & its comments and anchors\n            if (Node.isScalar(prev.value) && Scalar.isScalarValue(_pair.value))\n                prev.value.value = _pair.value;\n            else\n                prev.value = _pair.value;\n        }\n        else if (sortEntries) {\n            const i = this.items.findIndex(item => sortEntries(_pair, item) < 0);\n            if (i === -1)\n                this.items.push(_pair);\n            else\n                this.items.splice(i, 0, _pair);\n        }\n        else {\n            this.items.push(_pair);\n        }\n    }\n    delete(key) {\n        const it = findPair(this.items, key);\n        if (!it)\n            return false;\n        const del = this.items.splice(this.items.indexOf(it), 1);\n        return del.length > 0;\n    }\n    get(key, keepScalar) {\n        const it = findPair(this.items, key);\n        const node = it?.value;\n        return (!keepScalar && Node.isScalar(node) ? node.value : node) ?? undefined;\n    }\n    has(key) {\n        return !!findPair(this.items, key);\n    }\n    set(key, value) {\n        this.add(new Pair.Pair(key, value), true);\n    }\n    /**\n     * @param ctx - Conversion context, originally set in Document#toJS()\n     * @param {Class} Type - If set, forces the returned collection type\n     * @returns Instance of Type, Map, or Object\n     */\n    toJSON(_, ctx, Type) {\n        const map = Type ? new Type() : ctx?.mapAsMap ? new Map() : {};\n        if (ctx?.onCreate)\n            ctx.onCreate(map);\n        for (const item of this.items)\n            addPairToJSMap.addPairToJSMap(ctx, map, item);\n        return map;\n    }\n    toString(ctx, onComment, onChompKeep) {\n        if (!ctx)\n            return JSON.stringify(this);\n        for (const item of this.items) {\n            if (!Node.isPair(item))\n                throw new Error(`Map items must all be pairs; found ${JSON.stringify(item)} instead`);\n        }\n        if (!ctx.allNullValues && this.hasAllNullValues(false))\n            ctx = Object.assign({}, ctx, { allNullValues: true });\n        return stringifyCollection.stringifyCollection(this, ctx, {\n            blockItemPrefix: '',\n            flowChars: { start: '{', end: '}' },\n            itemIndent: ctx.indent || '',\n            onChompKeep,\n            onComment\n        });\n    }\n}\n\nexports.YAMLMap = YAMLMap;\nexports.findPair = findPair;\n","'use strict';\n\nvar stringifyCollection = require('../stringify/stringifyCollection.js');\nvar Collection = require('./Collection.js');\nvar Node = require('./Node.js');\nvar Scalar = require('./Scalar.js');\nvar toJS = require('./toJS.js');\n\nclass YAMLSeq extends Collection.Collection {\n    constructor(schema) {\n        super(Node.SEQ, schema);\n        this.items = [];\n    }\n    static get tagName() {\n        return 'tag:yaml.org,2002:seq';\n    }\n    add(value) {\n        this.items.push(value);\n    }\n    /**\n     * Removes a value from the collection.\n     *\n     * `key` must contain a representation of an integer for this to succeed.\n     * It may be wrapped in a `Scalar`.\n     *\n     * @returns `true` if the item was found and removed.\n     */\n    delete(key) {\n        const idx = asItemIndex(key);\n        if (typeof idx !== 'number')\n            return false;\n        const del = this.items.splice(idx, 1);\n        return del.length > 0;\n    }\n    get(key, keepScalar) {\n        const idx = asItemIndex(key);\n        if (typeof idx !== 'number')\n            return undefined;\n        const it = this.items[idx];\n        return !keepScalar && Node.isScalar(it) ? it.value : it;\n    }\n    /**\n     * Checks if the collection includes a value with the key `key`.\n     *\n     * `key` must contain a representation of an integer for this to succeed.\n     * It may be wrapped in a `Scalar`.\n     */\n    has(key) {\n        const idx = asItemIndex(key);\n        return typeof idx === 'number' && idx < this.items.length;\n    }\n    /**\n     * Sets a value in this collection. For `!!set`, `value` needs to be a\n     * boolean to add/remove the item from the set.\n     *\n     * If `key` does not contain a representation of an integer, this will throw.\n     * It may be wrapped in a `Scalar`.\n     */\n    set(key, value) {\n        const idx = asItemIndex(key);\n        if (typeof idx !== 'number')\n            throw new Error(`Expected a valid index, not ${key}.`);\n        const prev = this.items[idx];\n        if (Node.isScalar(prev) && Scalar.isScalarValue(value))\n            prev.value = value;\n        else\n            this.items[idx] = value;\n    }\n    toJSON(_, ctx) {\n        const seq = [];\n        if (ctx?.onCreate)\n            ctx.onCreate(seq);\n        let i = 0;\n        for (const item of this.items)\n            seq.push(toJS.toJS(item, String(i++), ctx));\n        return seq;\n    }\n    toString(ctx, onComment, onChompKeep) {\n        if (!ctx)\n            return JSON.stringify(this);\n        return stringifyCollection.stringifyCollection(this, ctx, {\n            blockItemPrefix: '- ',\n            flowChars: { start: '[', end: ']' },\n            itemIndent: (ctx.indent || '') + '  ',\n            onChompKeep,\n            onComment\n        });\n    }\n}\nfunction asItemIndex(key) {\n    let idx = Node.isScalar(key) ? key.value : key;\n    if (idx && typeof idx === 'string')\n        idx = Number(idx);\n    return typeof idx === 'number' && Number.isInteger(idx) && idx >= 0\n        ? idx\n        : null;\n}\n\nexports.YAMLSeq = YAMLSeq;\n","'use strict';\n\nvar log = require('../log.js');\nvar stringify = require('../stringify/stringify.js');\nvar Node = require('./Node.js');\nvar Scalar = require('./Scalar.js');\nvar toJS = require('./toJS.js');\n\nconst MERGE_KEY = '<<';\nfunction addPairToJSMap(ctx, map, { key, value }) {\n    if (ctx?.doc.schema.merge && isMergeKey(key)) {\n        value = Node.isAlias(value) ? value.resolve(ctx.doc) : value;\n        if (Node.isSeq(value))\n            for (const it of value.items)\n                mergeToJSMap(ctx, map, it);\n        else if (Array.isArray(value))\n            for (const it of value)\n                mergeToJSMap(ctx, map, it);\n        else\n            mergeToJSMap(ctx, map, value);\n    }\n    else {\n        const jsKey = toJS.toJS(key, '', ctx);\n        if (map instanceof Map) {\n            map.set(jsKey, toJS.toJS(value, jsKey, ctx));\n        }\n        else if (map instanceof Set) {\n            map.add(jsKey);\n        }\n        else {\n            const stringKey = stringifyKey(key, jsKey, ctx);\n            const jsValue = toJS.toJS(value, stringKey, ctx);\n            if (stringKey in map)\n                Object.defineProperty(map, stringKey, {\n                    value: jsValue,\n                    writable: true,\n                    enumerable: true,\n                    configurable: true\n                });\n            else\n                map[stringKey] = jsValue;\n        }\n    }\n    return map;\n}\nconst isMergeKey = (key) => key === MERGE_KEY ||\n    (Node.isScalar(key) &&\n        key.value === MERGE_KEY &&\n        (!key.type || key.type === Scalar.Scalar.PLAIN));\n// If the value associated with a merge key is a single mapping node, each of\n// its key/value pairs is inserted into the current mapping, unless the key\n// already exists in it. If the value associated with the merge key is a\n// sequence, then this sequence is expected to contain mapping nodes and each\n// of these nodes is merged in turn according to its order in the sequence.\n// Keys in mapping nodes earlier in the sequence override keys specified in\n// later mapping nodes. -- http://yaml.org/type/merge.html\nfunction mergeToJSMap(ctx, map, value) {\n    const source = ctx && Node.isAlias(value) ? value.resolve(ctx.doc) : value;\n    if (!Node.isMap(source))\n        throw new Error('Merge sources must be maps or map aliases');\n    const srcMap = source.toJSON(null, ctx, Map);\n    for (const [key, value] of srcMap) {\n        if (map instanceof Map) {\n            if (!map.has(key))\n                map.set(key, value);\n        }\n        else if (map instanceof Set) {\n            map.add(key);\n        }\n        else if (!Object.prototype.hasOwnProperty.call(map, key)) {\n            Object.defineProperty(map, key, {\n                value,\n                writable: true,\n                enumerable: true,\n                configurable: true\n            });\n        }\n    }\n    return map;\n}\nfunction stringifyKey(key, jsKey, ctx) {\n    if (jsKey === null)\n        return '';\n    if (typeof jsKey !== 'object')\n        return String(jsKey);\n    if (Node.isNode(key) && ctx && ctx.doc) {\n        const strCtx = stringify.createStringifyContext(ctx.doc, {});\n        strCtx.anchors = new Set();\n        for (const node of ctx.anchors.keys())\n            strCtx.anchors.add(node.anchor);\n        strCtx.inFlow = true;\n        strCtx.inStringifyKey = true;\n        const strKey = key.toString(strCtx);\n        if (!ctx.mapKeyWarned) {\n            let jsonStr = JSON.stringify(strKey);\n            if (jsonStr.length > 40)\n                jsonStr = jsonStr.substring(0, 36) + '...\"';\n            log.warn(ctx.doc.options.logLevel, `Keys with collection values will be stringified due to JS Object restrictions: ${jsonStr}. Set mapAsMap: true to use object keys.`);\n            ctx.mapKeyWarned = true;\n        }\n        return strKey;\n    }\n    return JSON.stringify(jsKey);\n}\n\nexports.addPairToJSMap = addPairToJSMap;\n","'use strict';\n\nvar Node = require('./Node.js');\n\n/**\n * Recursively convert any node or its contents to native JavaScript\n *\n * @param value - The input value\n * @param arg - If `value` defines a `toJSON()` method, use this\n *   as its first argument\n * @param ctx - Conversion context, originally set in Document#toJS(). If\n *   `{ keep: true }` is not set, output should be suitable for JSON\n *   stringification.\n */\nfunction toJS(value, arg, ctx) {\n    // eslint-disable-next-line @typescript-eslint/no-unsafe-return\n    if (Array.isArray(value))\n        return value.map((v, i) => toJS(v, String(i), ctx));\n    if (value && typeof value.toJSON === 'function') {\n        // eslint-disable-next-line @typescript-eslint/no-unsafe-call\n        if (!ctx || !Node.hasAnchor(value))\n            return value.toJSON(arg, ctx);\n        const data = { aliasCount: 0, count: 1, res: undefined };\n        ctx.anchors.set(value, data);\n        ctx.onCreate = res => {\n            data.res = res;\n            delete ctx.onCreate;\n        };\n        const res = value.toJSON(arg, ctx);\n        if (ctx.onCreate)\n            ctx.onCreate(res);\n        return res;\n    }\n    if (typeof value === 'bigint' && !ctx?.keep)\n        return Number(value);\n    return value;\n}\n\nexports.toJS = toJS;\n","'use strict';\n\nvar resolveBlockScalar = require('../compose/resolve-block-scalar.js');\nvar resolveFlowScalar = require('../compose/resolve-flow-scalar.js');\nvar errors = require('../errors.js');\nvar stringifyString = require('../stringify/stringifyString.js');\n\nfunction resolveAsScalar(token, strict = true, onError) {\n    if (token) {\n        const _onError = (pos, code, message) => {\n            const offset = typeof pos === 'number' ? pos : Array.isArray(pos) ? pos[0] : pos.offset;\n            if (onError)\n                onError(offset, code, message);\n            else\n                throw new errors.YAMLParseError([offset, offset + 1], code, message);\n        };\n        switch (token.type) {\n            case 'scalar':\n            case 'single-quoted-scalar':\n            case 'double-quoted-scalar':\n                return resolveFlowScalar.resolveFlowScalar(token, strict, _onError);\n            case 'block-scalar':\n                return resolveBlockScalar.resolveBlockScalar(token, strict, _onError);\n        }\n    }\n    return null;\n}\n/**\n * Create a new scalar token with `value`\n *\n * Values that represent an actual string but may be parsed as a different type should use a `type` other than `'PLAIN'`,\n * as this function does not support any schema operations and won't check for such conflicts.\n *\n * @param value The string representation of the value, which will have its content properly indented.\n * @param context.end Comments and whitespace after the end of the value, or after the block scalar header. If undefined, a newline will be added.\n * @param context.implicitKey Being within an implicit key may affect the resolved type of the token's value.\n * @param context.indent The indent level of the token.\n * @param context.inFlow Is this scalar within a flow collection? This may affect the resolved type of the token's value.\n * @param context.offset The offset position of the token.\n * @param context.type The preferred type of the scalar token. If undefined, the previous type of the `token` will be used, defaulting to `'PLAIN'`.\n */\nfunction createScalarToken(value, context) {\n    const { implicitKey = false, indent, inFlow = false, offset = -1, type = 'PLAIN' } = context;\n    const source = stringifyString.stringifyString({ type, value }, {\n        implicitKey,\n        indent: indent > 0 ? ' '.repeat(indent) : '',\n        inFlow,\n        options: { blockQuote: true, lineWidth: -1 }\n    });\n    const end = context.end ?? [\n        { type: 'newline', offset: -1, indent, source: '\\n' }\n    ];\n    switch (source[0]) {\n        case '|':\n        case '>': {\n            const he = source.indexOf('\\n');\n            const head = source.substring(0, he);\n            const body = source.substring(he + 1) + '\\n';\n            const props = [\n                { type: 'block-scalar-header', offset, indent, source: head }\n            ];\n            if (!addEndtoBlockProps(props, end))\n                props.push({ type: 'newline', offset: -1, indent, source: '\\n' });\n            return { type: 'block-scalar', offset, indent, props, source: body };\n        }\n        case '\"':\n            return { type: 'double-quoted-scalar', offset, indent, source, end };\n        case \"'\":\n            return { type: 'single-quoted-scalar', offset, indent, source, end };\n        default:\n            return { type: 'scalar', offset, indent, source, end };\n    }\n}\n/**\n * Set the value of `token` to the given string `value`, overwriting any previous contents and type that it may have.\n *\n * Best efforts are made to retain any comments previously associated with the `token`,\n * though all contents within a collection's `items` will be overwritten.\n *\n * Values that represent an actual string but may be parsed as a different type should use a `type` other than `'PLAIN'`,\n * as this function does not support any schema operations and won't check for such conflicts.\n *\n * @param token Any token. If it does not include an `indent` value, the value will be stringified as if it were an implicit key.\n * @param value The string representation of the value, which will have its content properly indented.\n * @param context.afterKey In most cases, values after a key should have an additional level of indentation.\n * @param context.implicitKey Being within an implicit key may affect the resolved type of the token's value.\n * @param context.inFlow Being within a flow collection may affect the resolved type of the token's value.\n * @param context.type The preferred type of the scalar token. If undefined, the previous type of the `token` will be used, defaulting to `'PLAIN'`.\n */\nfunction setScalarValue(token, value, context = {}) {\n    let { afterKey = false, implicitKey = false, inFlow = false, type } = context;\n    let indent = 'indent' in token ? token.indent : null;\n    if (afterKey && typeof indent === 'number')\n        indent += 2;\n    if (!type)\n        switch (token.type) {\n            case 'single-quoted-scalar':\n                type = 'QUOTE_SINGLE';\n                break;\n            case 'double-quoted-scalar':\n                type = 'QUOTE_DOUBLE';\n                break;\n            case 'block-scalar': {\n                const header = token.props[0];\n                if (header.type !== 'block-scalar-header')\n                    throw new Error('Invalid block scalar header');\n                type = header.source[0] === '>' ? 'BLOCK_FOLDED' : 'BLOCK_LITERAL';\n                break;\n            }\n            default:\n                type = 'PLAIN';\n        }\n    const source = stringifyString.stringifyString({ type, value }, {\n        implicitKey: implicitKey || indent === null,\n        indent: indent !== null && indent > 0 ? ' '.repeat(indent) : '',\n        inFlow,\n        options: { blockQuote: true, lineWidth: -1 }\n    });\n    switch (source[0]) {\n        case '|':\n        case '>':\n            setBlockScalarValue(token, source);\n            break;\n        case '\"':\n            setFlowScalarValue(token, source, 'double-quoted-scalar');\n            break;\n        case \"'\":\n            setFlowScalarValue(token, source, 'single-quoted-scalar');\n            break;\n        default:\n            setFlowScalarValue(token, source, 'scalar');\n    }\n}\nfunction setBlockScalarValue(token, source) {\n    const he = source.indexOf('\\n');\n    const head = source.substring(0, he);\n    const body = source.substring(he + 1) + '\\n';\n    if (token.type === 'block-scalar') {\n        const header = token.props[0];\n        if (header.type !== 'block-scalar-header')\n            throw new Error('Invalid block scalar header');\n        header.source = head;\n        token.source = body;\n    }\n    else {\n        const { offset } = token;\n        const indent = 'indent' in token ? token.indent : -1;\n        const props = [\n            { type: 'block-scalar-header', offset, indent, source: head }\n        ];\n        if (!addEndtoBlockProps(props, 'end' in token ? token.end : undefined))\n            props.push({ type: 'newline', offset: -1, indent, source: '\\n' });\n        for (const key of Object.keys(token))\n            if (key !== 'type' && key !== 'offset')\n                delete token[key];\n        Object.assign(token, { type: 'block-scalar', indent, props, source: body });\n    }\n}\n/** @returns `true` if last token is a newline */\nfunction addEndtoBlockProps(props, end) {\n    if (end)\n        for (const st of end)\n            switch (st.type) {\n                case 'space':\n                case 'comment':\n                    props.push(st);\n                    break;\n                case 'newline':\n                    props.push(st);\n                    return true;\n            }\n    return false;\n}\nfunction setFlowScalarValue(token, source, type) {\n    switch (token.type) {\n        case 'scalar':\n        case 'double-quoted-scalar':\n        case 'single-quoted-scalar':\n            token.type = type;\n            token.source = source;\n            break;\n        case 'block-scalar': {\n            const end = token.props.slice(1);\n            let oa = source.length;\n            if (token.props[0].type === 'block-scalar-header')\n                oa -= token.props[0].source.length;\n            for (const tok of end)\n                tok.offset += oa;\n            delete token.props;\n            Object.assign(token, { type, source, end });\n            break;\n        }\n        case 'block-map':\n        case 'block-seq': {\n            const offset = token.offset + source.length;\n            const nl = { type: 'newline', offset, indent: token.indent, source: '\\n' };\n            delete token.items;\n            Object.assign(token, { type, source, end: [nl] });\n            break;\n        }\n        default: {\n            const indent = 'indent' in token ? token.indent : -1;\n            const end = 'end' in token && Array.isArray(token.end)\n                ? token.end.filter(st => st.type === 'space' ||\n                    st.type === 'comment' ||\n                    st.type === 'newline')\n                : [];\n            for (const key of Object.keys(token))\n                if (key !== 'type' && key !== 'offset')\n                    delete token[key];\n            Object.assign(token, { type, indent, source, end });\n        }\n    }\n}\n\nexports.createScalarToken = createScalarToken;\nexports.resolveAsScalar = resolveAsScalar;\nexports.setScalarValue = setScalarValue;\n","'use strict';\n\n/**\n * Stringify a CST document, token, or collection item\n *\n * Fair warning: This applies no validation whatsoever, and\n * simply concatenates the sources in their logical order.\n */\nconst stringify = (cst) => 'type' in cst ? stringifyToken(cst) : stringifyItem(cst);\nfunction stringifyToken(token) {\n    switch (token.type) {\n        case 'block-scalar': {\n            let res = '';\n            for (const tok of token.props)\n                res += stringifyToken(tok);\n            return res + token.source;\n        }\n        case 'block-map':\n        case 'block-seq': {\n            let res = '';\n            for (const item of token.items)\n                res += stringifyItem(item);\n            return res;\n        }\n        case 'flow-collection': {\n            let res = token.start.source;\n            for (const item of token.items)\n                res += stringifyItem(item);\n            for (const st of token.end)\n                res += st.source;\n            return res;\n        }\n        case 'document': {\n            let res = stringifyItem(token);\n            if (token.end)\n                for (const st of token.end)\n                    res += st.source;\n            return res;\n        }\n        default: {\n            let res = token.source;\n            if ('end' in token && token.end)\n                for (const st of token.end)\n                    res += st.source;\n            return res;\n        }\n    }\n}\nfunction stringifyItem({ start, key, sep, value }) {\n    let res = '';\n    for (const st of start)\n        res += st.source;\n    if (key)\n        res += stringifyToken(key);\n    if (sep)\n        for (const st of sep)\n            res += st.source;\n    if (value)\n        res += stringifyToken(value);\n    return res;\n}\n\nexports.stringify = stringify;\n","'use strict';\n\nconst BREAK = Symbol('break visit');\nconst SKIP = Symbol('skip children');\nconst REMOVE = Symbol('remove item');\n/**\n * Apply a visitor to a CST document or item.\n *\n * Walks through the tree (depth-first) starting from the root, calling a\n * `visitor` function with two arguments when entering each item:\n *   - `item`: The current item, which included the following members:\n *     - `start: SourceToken[]` – Source tokens before the key or value,\n *       possibly including its anchor or tag.\n *     - `key?: Token | null` – Set for pair values. May then be `null`, if\n *       the key before the `:` separator is empty.\n *     - `sep?: SourceToken[]` – Source tokens between the key and the value,\n *       which should include the `:` map value indicator if `value` is set.\n *     - `value?: Token` – The value of a sequence item, or of a map pair.\n *   - `path`: The steps from the root to the current node, as an array of\n *     `['key' | 'value', number]` tuples.\n *\n * The return value of the visitor may be used to control the traversal:\n *   - `undefined` (default): Do nothing and continue\n *   - `visit.SKIP`: Do not visit the children of this token, continue with\n *      next sibling\n *   - `visit.BREAK`: Terminate traversal completely\n *   - `visit.REMOVE`: Remove the current item, then continue with the next one\n *   - `number`: Set the index of the next step. This is useful especially if\n *     the index of the current token has changed.\n *   - `function`: Define the next visitor for this item. After the original\n *     visitor is called on item entry, next visitors are called after handling\n *     a non-empty `key` and when exiting the item.\n */\nfunction visit(cst, visitor) {\n    if ('type' in cst && cst.type === 'document')\n        cst = { start: cst.start, value: cst.value };\n    _visit(Object.freeze([]), cst, visitor);\n}\n// Without the `as symbol` casts, TS declares these in the `visit`\n// namespace using `var`, but then complains about that because\n// `unique symbol` must be `const`.\n/** Terminate visit traversal completely */\nvisit.BREAK = BREAK;\n/** Do not visit the children of the current item */\nvisit.SKIP = SKIP;\n/** Remove the current item */\nvisit.REMOVE = REMOVE;\n/** Find the item at `path` from `cst` as the root */\nvisit.itemAtPath = (cst, path) => {\n    let item = cst;\n    for (const [field, index] of path) {\n        const tok = item?.[field];\n        if (tok && 'items' in tok) {\n            item = tok.items[index];\n        }\n        else\n            return undefined;\n    }\n    return item;\n};\n/**\n * Get the immediate parent collection of the item at `path` from `cst` as the root.\n *\n * Throws an error if the collection is not found, which should never happen if the item itself exists.\n */\nvisit.parentCollection = (cst, path) => {\n    const parent = visit.itemAtPath(cst, path.slice(0, -1));\n    const field = path[path.length - 1][0];\n    const coll = parent?.[field];\n    if (coll && 'items' in coll)\n        return coll;\n    throw new Error('Parent collection not found');\n};\nfunction _visit(path, item, visitor) {\n    let ctrl = visitor(item, path);\n    if (typeof ctrl === 'symbol')\n        return ctrl;\n    for (const field of ['key', 'value']) {\n        const token = item[field];\n        if (token && 'items' in token) {\n            for (let i = 0; i < token.items.length; ++i) {\n                const ci = _visit(Object.freeze(path.concat([[field, i]])), token.items[i], visitor);\n                if (typeof ci === 'number')\n                    i = ci - 1;\n                else if (ci === BREAK)\n                    return BREAK;\n                else if (ci === REMOVE) {\n                    token.items.splice(i, 1);\n                    i -= 1;\n                }\n            }\n            if (typeof ctrl === 'function' && field === 'key')\n                ctrl = ctrl(item, path);\n        }\n    }\n    return typeof ctrl === 'function' ? ctrl(item, path) : ctrl;\n}\n\nexports.visit = visit;\n","'use strict';\n\nvar cstScalar = require('./cst-scalar.js');\nvar cstStringify = require('./cst-stringify.js');\nvar cstVisit = require('./cst-visit.js');\n\n/** The byte order mark */\nconst BOM = '\\u{FEFF}';\n/** Start of doc-mode */\nconst DOCUMENT = '\\x02'; // C0: Start of Text\n/** Unexpected end of flow-mode */\nconst FLOW_END = '\\x18'; // C0: Cancel\n/** Next token is a scalar value */\nconst SCALAR = '\\x1f'; // C0: Unit Separator\n/** @returns `true` if `token` is a flow or block collection */\nconst isCollection = (token) => !!token && 'items' in token;\n/** @returns `true` if `token` is a flow or block scalar; not an alias */\nconst isScalar = (token) => !!token &&\n    (token.type === 'scalar' ||\n        token.type === 'single-quoted-scalar' ||\n        token.type === 'double-quoted-scalar' ||\n        token.type === 'block-scalar');\n/* istanbul ignore next */\n/** Get a printable representation of a lexer token */\nfunction prettyToken(token) {\n    switch (token) {\n        case BOM:\n            return '<BOM>';\n        case DOCUMENT:\n            return '<DOC>';\n        case FLOW_END:\n            return '<FLOW_END>';\n        case SCALAR:\n            return '<SCALAR>';\n        default:\n            return JSON.stringify(token);\n    }\n}\n/** Identify the type of a lexer token. May return `null` for unknown tokens. */\nfunction tokenType(source) {\n    switch (source) {\n        case BOM:\n            return 'byte-order-mark';\n        case DOCUMENT:\n            return 'doc-mode';\n        case FLOW_END:\n            return 'flow-error-end';\n        case SCALAR:\n            return 'scalar';\n        case '---':\n            return 'doc-start';\n        case '...':\n            return 'doc-end';\n        case '':\n        case '\\n':\n        case '\\r\\n':\n            return 'newline';\n        case '-':\n            return 'seq-item-ind';\n        case '?':\n            return 'explicit-key-ind';\n        case ':':\n            return 'map-value-ind';\n        case '{':\n            return 'flow-map-start';\n        case '}':\n            return 'flow-map-end';\n        case '[':\n            return 'flow-seq-start';\n        case ']':\n            return 'flow-seq-end';\n        case ',':\n            return 'comma';\n    }\n    switch (source[0]) {\n        case ' ':\n        case '\\t':\n            return 'space';\n        case '#':\n            return 'comment';\n        case '%':\n            return 'directive-line';\n        case '*':\n            return 'alias';\n        case '&':\n            return 'anchor';\n        case '!':\n            return 'tag';\n        case \"'\":\n            return 'single-quoted-scalar';\n        case '\"':\n            return 'double-quoted-scalar';\n        case '|':\n        case '>':\n            return 'block-scalar-header';\n    }\n    return null;\n}\n\nexports.createScalarToken = cstScalar.createScalarToken;\nexports.resolveAsScalar = cstScalar.resolveAsScalar;\nexports.setScalarValue = cstScalar.setScalarValue;\nexports.stringify = cstStringify.stringify;\nexports.visit = cstVisit.visit;\nexports.BOM = BOM;\nexports.DOCUMENT = DOCUMENT;\nexports.FLOW_END = FLOW_END;\nexports.SCALAR = SCALAR;\nexports.isCollection = isCollection;\nexports.isScalar = isScalar;\nexports.prettyToken = prettyToken;\nexports.tokenType = tokenType;\n","'use strict';\n\nvar cst = require('./cst.js');\n\n/*\nSTART -> stream\n\nstream\n  directive -> line-end -> stream\n  indent + line-end -> stream\n  [else] -> line-start\n\nline-end\n  comment -> line-end\n  newline -> .\n  input-end -> END\n\nline-start\n  doc-start -> doc\n  doc-end -> stream\n  [else] -> indent -> block-start\n\nblock-start\n  seq-item-start -> block-start\n  explicit-key-start -> block-start\n  map-value-start -> block-start\n  [else] -> doc\n\ndoc\n  line-end -> line-start\n  spaces -> doc\n  anchor -> doc\n  tag -> doc\n  flow-start -> flow -> doc\n  flow-end -> error -> doc\n  seq-item-start -> error -> doc\n  explicit-key-start -> error -> doc\n  map-value-start -> doc\n  alias -> doc\n  quote-start -> quoted-scalar -> doc\n  block-scalar-header -> line-end -> block-scalar(min) -> line-start\n  [else] -> plain-scalar(false, min) -> doc\n\nflow\n  line-end -> flow\n  spaces -> flow\n  anchor -> flow\n  tag -> flow\n  flow-start -> flow -> flow\n  flow-end -> .\n  seq-item-start -> error -> flow\n  explicit-key-start -> flow\n  map-value-start -> flow\n  alias -> flow\n  quote-start -> quoted-scalar -> flow\n  comma -> flow\n  [else] -> plain-scalar(true, 0) -> flow\n\nquoted-scalar\n  quote-end -> .\n  [else] -> quoted-scalar\n\nblock-scalar(min)\n  newline + peek(indent < min) -> .\n  [else] -> block-scalar(min)\n\nplain-scalar(is-flow, min)\n  scalar-end(is-flow) -> .\n  peek(newline + (indent < min)) -> .\n  [else] -> plain-scalar(min)\n*/\nfunction isEmpty(ch) {\n    switch (ch) {\n        case undefined:\n        case ' ':\n        case '\\n':\n        case '\\r':\n        case '\\t':\n            return true;\n        default:\n            return false;\n    }\n}\nconst hexDigits = '0123456789ABCDEFabcdef'.split('');\nconst tagChars = \"0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz-#;/?:@&=+$_.!~*'()\".split('');\nconst invalidFlowScalarChars = ',[]{}'.split('');\nconst invalidAnchorChars = ' ,[]{}\\n\\r\\t'.split('');\nconst isNotAnchorChar = (ch) => !ch || invalidAnchorChars.includes(ch);\n/**\n * Splits an input string into lexical tokens, i.e. smaller strings that are\n * easily identifiable by `tokens.tokenType()`.\n *\n * Lexing starts always in a \"stream\" context. Incomplete input may be buffered\n * until a complete token can be emitted.\n *\n * In addition to slices of the original input, the following control characters\n * may also be emitted:\n *\n * - `\\x02` (Start of Text): A document starts with the next token\n * - `\\x18` (Cancel): Unexpected end of flow-mode (indicates an error)\n * - `\\x1f` (Unit Separator): Next token is a scalar value\n * - `\\u{FEFF}` (Byte order mark): Emitted separately outside documents\n */\nclass Lexer {\n    constructor() {\n        /**\n         * Flag indicating whether the end of the current buffer marks the end of\n         * all input\n         */\n        this.atEnd = false;\n        /**\n         * Explicit indent set in block scalar header, as an offset from the current\n         * minimum indent, so e.g. set to 1 from a header `|2+`. Set to -1 if not\n         * explicitly set.\n         */\n        this.blockScalarIndent = -1;\n        /**\n         * Block scalars that include a + (keep) chomping indicator in their header\n         * include trailing empty lines, which are otherwise excluded from the\n         * scalar's contents.\n         */\n        this.blockScalarKeep = false;\n        /** Current input */\n        this.buffer = '';\n        /**\n         * Flag noting whether the map value indicator : can immediately follow this\n         * node within a flow context.\n         */\n        this.flowKey = false;\n        /** Count of surrounding flow collection levels. */\n        this.flowLevel = 0;\n        /**\n         * Minimum level of indentation required for next lines to be parsed as a\n         * part of the current scalar value.\n         */\n        this.indentNext = 0;\n        /** Indentation level of the current line. */\n        this.indentValue = 0;\n        /** Position of the next \\n character. */\n        this.lineEndPos = null;\n        /** Stores the state of the lexer if reaching the end of incpomplete input */\n        this.next = null;\n        /** A pointer to `buffer`; the current position of the lexer. */\n        this.pos = 0;\n    }\n    /**\n     * Generate YAML tokens from the `source` string. If `incomplete`,\n     * a part of the last line may be left as a buffer for the next call.\n     *\n     * @returns A generator of lexical tokens\n     */\n    *lex(source, incomplete = false) {\n        if (source) {\n            this.buffer = this.buffer ? this.buffer + source : source;\n            this.lineEndPos = null;\n        }\n        this.atEnd = !incomplete;\n        let next = this.next ?? 'stream';\n        while (next && (incomplete || this.hasChars(1)))\n            next = yield* this.parseNext(next);\n    }\n    atLineEnd() {\n        let i = this.pos;\n        let ch = this.buffer[i];\n        while (ch === ' ' || ch === '\\t')\n            ch = this.buffer[++i];\n        if (!ch || ch === '#' || ch === '\\n')\n            return true;\n        if (ch === '\\r')\n            return this.buffer[i + 1] === '\\n';\n        return false;\n    }\n    charAt(n) {\n        return this.buffer[this.pos + n];\n    }\n    continueScalar(offset) {\n        let ch = this.buffer[offset];\n        if (this.indentNext > 0) {\n            let indent = 0;\n            while (ch === ' ')\n                ch = this.buffer[++indent + offset];\n            if (ch === '\\r') {\n                const next = this.buffer[indent + offset + 1];\n                if (next === '\\n' || (!next && !this.atEnd))\n                    return offset + indent + 1;\n            }\n            return ch === '\\n' || indent >= this.indentNext || (!ch && !this.atEnd)\n                ? offset + indent\n                : -1;\n        }\n        if (ch === '-' || ch === '.') {\n            const dt = this.buffer.substr(offset, 3);\n            if ((dt === '---' || dt === '...') && isEmpty(this.buffer[offset + 3]))\n                return -1;\n        }\n        return offset;\n    }\n    getLine() {\n        let end = this.lineEndPos;\n        if (typeof end !== 'number' || (end !== -1 && end < this.pos)) {\n            end = this.buffer.indexOf('\\n', this.pos);\n            this.lineEndPos = end;\n        }\n        if (end === -1)\n            return this.atEnd ? this.buffer.substring(this.pos) : null;\n        if (this.buffer[end - 1] === '\\r')\n            end -= 1;\n        return this.buffer.substring(this.pos, end);\n    }\n    hasChars(n) {\n        return this.pos + n <= this.buffer.length;\n    }\n    setNext(state) {\n        this.buffer = this.buffer.substring(this.pos);\n        this.pos = 0;\n        this.lineEndPos = null;\n        this.next = state;\n        return null;\n    }\n    peek(n) {\n        return this.buffer.substr(this.pos, n);\n    }\n    *parseNext(next) {\n        switch (next) {\n            case 'stream':\n                return yield* this.parseStream();\n            case 'line-start':\n                return yield* this.parseLineStart();\n            case 'block-start':\n                return yield* this.parseBlockStart();\n            case 'doc':\n                return yield* this.parseDocument();\n            case 'flow':\n                return yield* this.parseFlowCollection();\n            case 'quoted-scalar':\n                return yield* this.parseQuotedScalar();\n            case 'block-scalar':\n                return yield* this.parseBlockScalar();\n            case 'plain-scalar':\n                return yield* this.parsePlainScalar();\n        }\n    }\n    *parseStream() {\n        let line = this.getLine();\n        if (line === null)\n            return this.setNext('stream');\n        if (line[0] === cst.BOM) {\n            yield* this.pushCount(1);\n            line = line.substring(1);\n        }\n        if (line[0] === '%') {\n            let dirEnd = line.length;\n            const cs = line.indexOf('#');\n            if (cs !== -1) {\n                const ch = line[cs - 1];\n                if (ch === ' ' || ch === '\\t')\n                    dirEnd = cs - 1;\n            }\n            while (true) {\n                const ch = line[dirEnd - 1];\n                if (ch === ' ' || ch === '\\t')\n                    dirEnd -= 1;\n                else\n                    break;\n            }\n            const n = (yield* this.pushCount(dirEnd)) + (yield* this.pushSpaces(true));\n            yield* this.pushCount(line.length - n); // possible comment\n            this.pushNewline();\n            return 'stream';\n        }\n        if (this.atLineEnd()) {\n            const sp = yield* this.pushSpaces(true);\n            yield* this.pushCount(line.length - sp);\n            yield* this.pushNewline();\n            return 'stream';\n        }\n        yield cst.DOCUMENT;\n        return yield* this.parseLineStart();\n    }\n    *parseLineStart() {\n        const ch = this.charAt(0);\n        if (!ch && !this.atEnd)\n            return this.setNext('line-start');\n        if (ch === '-' || ch === '.') {\n            if (!this.atEnd && !this.hasChars(4))\n                return this.setNext('line-start');\n            const s = this.peek(3);\n            if (s === '---' && isEmpty(this.charAt(3))) {\n                yield* this.pushCount(3);\n                this.indentValue = 0;\n                this.indentNext = 0;\n                return 'doc';\n            }\n            else if (s === '...' && isEmpty(this.charAt(3))) {\n                yield* this.pushCount(3);\n                return 'stream';\n            }\n        }\n        this.indentValue = yield* this.pushSpaces(false);\n        if (this.indentNext > this.indentValue && !isEmpty(this.charAt(1)))\n            this.indentNext = this.indentValue;\n        return yield* this.parseBlockStart();\n    }\n    *parseBlockStart() {\n        const [ch0, ch1] = this.peek(2);\n        if (!ch1 && !this.atEnd)\n            return this.setNext('block-start');\n        if ((ch0 === '-' || ch0 === '?' || ch0 === ':') && isEmpty(ch1)) {\n            const n = (yield* this.pushCount(1)) + (yield* this.pushSpaces(true));\n            this.indentNext = this.indentValue + 1;\n            this.indentValue += n;\n            return yield* this.parseBlockStart();\n        }\n        return 'doc';\n    }\n    *parseDocument() {\n        yield* this.pushSpaces(true);\n        const line = this.getLine();\n        if (line === null)\n            return this.setNext('doc');\n        let n = yield* this.pushIndicators();\n        switch (line[n]) {\n            case '#':\n                yield* this.pushCount(line.length - n);\n            // fallthrough\n            case undefined:\n                yield* this.pushNewline();\n                return yield* this.parseLineStart();\n            case '{':\n            case '[':\n                yield* this.pushCount(1);\n                this.flowKey = false;\n                this.flowLevel = 1;\n                return 'flow';\n            case '}':\n            case ']':\n                // this is an error\n                yield* this.pushCount(1);\n                return 'doc';\n            case '*':\n                yield* this.pushUntil(isNotAnchorChar);\n                return 'doc';\n            case '\"':\n            case \"'\":\n                return yield* this.parseQuotedScalar();\n            case '|':\n            case '>':\n                n += yield* this.parseBlockScalarHeader();\n                n += yield* this.pushSpaces(true);\n                yield* this.pushCount(line.length - n);\n                yield* this.pushNewline();\n                return yield* this.parseBlockScalar();\n            default:\n                return yield* this.parsePlainScalar();\n        }\n    }\n    *parseFlowCollection() {\n        let nl, sp;\n        let indent = -1;\n        do {\n            nl = yield* this.pushNewline();\n            if (nl > 0) {\n                sp = yield* this.pushSpaces(false);\n                this.indentValue = indent = sp;\n            }\n            else {\n                sp = 0;\n            }\n            sp += yield* this.pushSpaces(true);\n        } while (nl + sp > 0);\n        const line = this.getLine();\n        if (line === null)\n            return this.setNext('flow');\n        if ((indent !== -1 && indent < this.indentNext && line[0] !== '#') ||\n            (indent === 0 &&\n                (line.startsWith('---') || line.startsWith('...')) &&\n                isEmpty(line[3]))) {\n            // Allowing for the terminal ] or } at the same (rather than greater)\n            // indent level as the initial [ or { is technically invalid, but\n            // failing here would be surprising to users.\n            const atFlowEndMarker = indent === this.indentNext - 1 &&\n                this.flowLevel === 1 &&\n                (line[0] === ']' || line[0] === '}');\n            if (!atFlowEndMarker) {\n                // this is an error\n                this.flowLevel = 0;\n                yield cst.FLOW_END;\n                return yield* this.parseLineStart();\n            }\n        }\n        let n = 0;\n        while (line[n] === ',') {\n            n += yield* this.pushCount(1);\n            n += yield* this.pushSpaces(true);\n            this.flowKey = false;\n        }\n        n += yield* this.pushIndicators();\n        switch (line[n]) {\n            case undefined:\n                return 'flow';\n            case '#':\n                yield* this.pushCount(line.length - n);\n                return 'flow';\n            case '{':\n            case '[':\n                yield* this.pushCount(1);\n                this.flowKey = false;\n                this.flowLevel += 1;\n                return 'flow';\n            case '}':\n            case ']':\n                yield* this.pushCount(1);\n                this.flowKey = true;\n                this.flowLevel -= 1;\n                return this.flowLevel ? 'flow' : 'doc';\n            case '*':\n                yield* this.pushUntil(isNotAnchorChar);\n                return 'flow';\n            case '\"':\n            case \"'\":\n                this.flowKey = true;\n                return yield* this.parseQuotedScalar();\n            case ':': {\n                const next = this.charAt(1);\n                if (this.flowKey || isEmpty(next) || next === ',') {\n                    this.flowKey = false;\n                    yield* this.pushCount(1);\n                    yield* this.pushSpaces(true);\n                    return 'flow';\n                }\n            }\n            // fallthrough\n            default:\n                this.flowKey = false;\n                return yield* this.parsePlainScalar();\n        }\n    }\n    *parseQuotedScalar() {\n        const quote = this.charAt(0);\n        let end = this.buffer.indexOf(quote, this.pos + 1);\n        if (quote === \"'\") {\n            while (end !== -1 && this.buffer[end + 1] === \"'\")\n                end = this.buffer.indexOf(\"'\", end + 2);\n        }\n        else {\n            // double-quote\n            while (end !== -1) {\n                let n = 0;\n                while (this.buffer[end - 1 - n] === '\\\\')\n                    n += 1;\n                if (n % 2 === 0)\n                    break;\n                end = this.buffer.indexOf('\"', end + 1);\n            }\n        }\n        // Only looking for newlines within the quotes\n        const qb = this.buffer.substring(0, end);\n        let nl = qb.indexOf('\\n', this.pos);\n        if (nl !== -1) {\n            while (nl !== -1) {\n                const cs = this.continueScalar(nl + 1);\n                if (cs === -1)\n                    break;\n                nl = qb.indexOf('\\n', cs);\n            }\n            if (nl !== -1) {\n                // this is an error caused by an unexpected unindent\n                end = nl - (qb[nl - 1] === '\\r' ? 2 : 1);\n            }\n        }\n        if (end === -1) {\n            if (!this.atEnd)\n                return this.setNext('quoted-scalar');\n            end = this.buffer.length;\n        }\n        yield* this.pushToIndex(end + 1, false);\n        return this.flowLevel ? 'flow' : 'doc';\n    }\n    *parseBlockScalarHeader() {\n        this.blockScalarIndent = -1;\n        this.blockScalarKeep = false;\n        let i = this.pos;\n        while (true) {\n            const ch = this.buffer[++i];\n            if (ch === '+')\n                this.blockScalarKeep = true;\n            else if (ch > '0' && ch <= '9')\n                this.blockScalarIndent = Number(ch) - 1;\n            else if (ch !== '-')\n                break;\n        }\n        return yield* this.pushUntil(ch => isEmpty(ch) || ch === '#');\n    }\n    *parseBlockScalar() {\n        let nl = this.pos - 1; // may be -1 if this.pos === 0\n        let indent = 0;\n        let ch;\n        loop: for (let i = this.pos; (ch = this.buffer[i]); ++i) {\n            switch (ch) {\n                case ' ':\n                    indent += 1;\n                    break;\n                case '\\n':\n                    nl = i;\n                    indent = 0;\n                    break;\n                case '\\r': {\n                    const next = this.buffer[i + 1];\n                    if (!next && !this.atEnd)\n                        return this.setNext('block-scalar');\n                    if (next === '\\n')\n                        break;\n                } // fallthrough\n                default:\n                    break loop;\n            }\n        }\n        if (!ch && !this.atEnd)\n            return this.setNext('block-scalar');\n        if (indent >= this.indentNext) {\n            if (this.blockScalarIndent === -1)\n                this.indentNext = indent;\n            else\n                this.indentNext += this.blockScalarIndent;\n            do {\n                const cs = this.continueScalar(nl + 1);\n                if (cs === -1)\n                    break;\n                nl = this.buffer.indexOf('\\n', cs);\n            } while (nl !== -1);\n            if (nl === -1) {\n                if (!this.atEnd)\n                    return this.setNext('block-scalar');\n                nl = this.buffer.length;\n            }\n        }\n        if (!this.blockScalarKeep) {\n            do {\n                let i = nl - 1;\n                let ch = this.buffer[i];\n                if (ch === '\\r')\n                    ch = this.buffer[--i];\n                const lastChar = i; // Drop the line if last char not more indented\n                while (ch === ' ' || ch === '\\t')\n                    ch = this.buffer[--i];\n                if (ch === '\\n' && i >= this.pos && i + 1 + indent > lastChar)\n                    nl = i;\n                else\n                    break;\n            } while (true);\n        }\n        yield cst.SCALAR;\n        yield* this.pushToIndex(nl + 1, true);\n        return yield* this.parseLineStart();\n    }\n    *parsePlainScalar() {\n        const inFlow = this.flowLevel > 0;\n        let end = this.pos - 1;\n        let i = this.pos - 1;\n        let ch;\n        while ((ch = this.buffer[++i])) {\n            if (ch === ':') {\n                const next = this.buffer[i + 1];\n                if (isEmpty(next) || (inFlow && next === ','))\n                    break;\n                end = i;\n            }\n            else if (isEmpty(ch)) {\n                let next = this.buffer[i + 1];\n                if (ch === '\\r') {\n                    if (next === '\\n') {\n                        i += 1;\n                        ch = '\\n';\n                        next = this.buffer[i + 1];\n                    }\n                    else\n                        end = i;\n                }\n                if (next === '#' || (inFlow && invalidFlowScalarChars.includes(next)))\n                    break;\n                if (ch === '\\n') {\n                    const cs = this.continueScalar(i + 1);\n                    if (cs === -1)\n                        break;\n                    i = Math.max(i, cs - 2); // to advance, but still account for ' #'\n                }\n            }\n            else {\n                if (inFlow && invalidFlowScalarChars.includes(ch))\n                    break;\n                end = i;\n            }\n        }\n        if (!ch && !this.atEnd)\n            return this.setNext('plain-scalar');\n        yield cst.SCALAR;\n        yield* this.pushToIndex(end + 1, true);\n        return inFlow ? 'flow' : 'doc';\n    }\n    *pushCount(n) {\n        if (n > 0) {\n            yield this.buffer.substr(this.pos, n);\n            this.pos += n;\n            return n;\n        }\n        return 0;\n    }\n    *pushToIndex(i, allowEmpty) {\n        const s = this.buffer.slice(this.pos, i);\n        if (s) {\n            yield s;\n            this.pos += s.length;\n            return s.length;\n        }\n        else if (allowEmpty)\n            yield '';\n        return 0;\n    }\n    *pushIndicators() {\n        switch (this.charAt(0)) {\n            case '!':\n                return ((yield* this.pushTag()) +\n                    (yield* this.pushSpaces(true)) +\n                    (yield* this.pushIndicators()));\n            case '&':\n                return ((yield* this.pushUntil(isNotAnchorChar)) +\n                    (yield* this.pushSpaces(true)) +\n                    (yield* this.pushIndicators()));\n            case '-': // this is an error\n            case '?': // this is an error outside flow collections\n            case ':': {\n                const inFlow = this.flowLevel > 0;\n                const ch1 = this.charAt(1);\n                if (isEmpty(ch1) || (inFlow && invalidFlowScalarChars.includes(ch1))) {\n                    if (!inFlow)\n                        this.indentNext = this.indentValue + 1;\n                    else if (this.flowKey)\n                        this.flowKey = false;\n                    return ((yield* this.pushCount(1)) +\n                        (yield* this.pushSpaces(true)) +\n                        (yield* this.pushIndicators()));\n                }\n            }\n        }\n        return 0;\n    }\n    *pushTag() {\n        if (this.charAt(1) === '<') {\n            let i = this.pos + 2;\n            let ch = this.buffer[i];\n            while (!isEmpty(ch) && ch !== '>')\n                ch = this.buffer[++i];\n            return yield* this.pushToIndex(ch === '>' ? i + 1 : i, false);\n        }\n        else {\n            let i = this.pos + 1;\n            let ch = this.buffer[i];\n            while (ch) {\n                if (tagChars.includes(ch))\n                    ch = this.buffer[++i];\n                else if (ch === '%' &&\n                    hexDigits.includes(this.buffer[i + 1]) &&\n                    hexDigits.includes(this.buffer[i + 2])) {\n                    ch = this.buffer[(i += 3)];\n                }\n                else\n                    break;\n            }\n            return yield* this.pushToIndex(i, false);\n        }\n    }\n    *pushNewline() {\n        const ch = this.buffer[this.pos];\n        if (ch === '\\n')\n            return yield* this.pushCount(1);\n        else if (ch === '\\r' && this.charAt(1) === '\\n')\n            return yield* this.pushCount(2);\n        else\n            return 0;\n    }\n    *pushSpaces(allowTabs) {\n        let i = this.pos - 1;\n        let ch;\n        do {\n            ch = this.buffer[++i];\n        } while (ch === ' ' || (allowTabs && ch === '\\t'));\n        const n = i - this.pos;\n        if (n > 0) {\n            yield this.buffer.substr(this.pos, n);\n            this.pos = i;\n        }\n        return n;\n    }\n    *pushUntil(test) {\n        let i = this.pos;\n        let ch = this.buffer[i];\n        while (!test(ch))\n            ch = this.buffer[++i];\n        return yield* this.pushToIndex(i, false);\n    }\n}\n\nexports.Lexer = Lexer;\n","'use strict';\n\n/**\n * Tracks newlines during parsing in order to provide an efficient API for\n * determining the one-indexed `{ line, col }` position for any offset\n * within the input.\n */\nclass LineCounter {\n    constructor() {\n        this.lineStarts = [];\n        /**\n         * Should be called in ascending order. Otherwise, call\n         * `lineCounter.lineStarts.sort()` before calling `linePos()`.\n         */\n        this.addNewLine = (offset) => this.lineStarts.push(offset);\n        /**\n         * Performs a binary search and returns the 1-indexed { line, col }\n         * position of `offset`. If `line === 0`, `addNewLine` has never been\n         * called or `offset` is before the first known newline.\n         */\n        this.linePos = (offset) => {\n            let low = 0;\n            let high = this.lineStarts.length;\n            while (low < high) {\n                const mid = (low + high) >> 1; // Math.floor((low + high) / 2)\n                if (this.lineStarts[mid] < offset)\n                    low = mid + 1;\n                else\n                    high = mid;\n            }\n            if (this.lineStarts[low] === offset)\n                return { line: low + 1, col: 1 };\n            if (low === 0)\n                return { line: 0, col: offset };\n            const start = this.lineStarts[low - 1];\n            return { line: low, col: offset - start + 1 };\n        };\n    }\n}\n\nexports.LineCounter = LineCounter;\n","'use strict';\n\nvar cst = require('./cst.js');\nvar lexer = require('./lexer.js');\n\nfunction includesToken(list, type) {\n    for (let i = 0; i < list.length; ++i)\n        if (list[i].type === type)\n            return true;\n    return false;\n}\nfunction findNonEmptyIndex(list) {\n    for (let i = 0; i < list.length; ++i) {\n        switch (list[i].type) {\n            case 'space':\n            case 'comment':\n            case 'newline':\n                break;\n            default:\n                return i;\n        }\n    }\n    return -1;\n}\nfunction isFlowToken(token) {\n    switch (token?.type) {\n        case 'alias':\n        case 'scalar':\n        case 'single-quoted-scalar':\n        case 'double-quoted-scalar':\n        case 'flow-collection':\n            return true;\n        default:\n            return false;\n    }\n}\nfunction getPrevProps(parent) {\n    switch (parent.type) {\n        case 'document':\n            return parent.start;\n        case 'block-map': {\n            const it = parent.items[parent.items.length - 1];\n            return it.sep ?? it.start;\n        }\n        case 'block-seq':\n            return parent.items[parent.items.length - 1].start;\n        /* istanbul ignore next should not happen */\n        default:\n            return [];\n    }\n}\n/** Note: May modify input array */\nfunction getFirstKeyStartProps(prev) {\n    if (prev.length === 0)\n        return [];\n    let i = prev.length;\n    loop: while (--i >= 0) {\n        switch (prev[i].type) {\n            case 'doc-start':\n            case 'explicit-key-ind':\n            case 'map-value-ind':\n            case 'seq-item-ind':\n            case 'newline':\n                break loop;\n        }\n    }\n    while (prev[++i]?.type === 'space') {\n        /* loop */\n    }\n    return prev.splice(i, prev.length);\n}\nfunction fixFlowSeqItems(fc) {\n    if (fc.start.type === 'flow-seq-start') {\n        for (const it of fc.items) {\n            if (it.sep &&\n                !it.value &&\n                !includesToken(it.start, 'explicit-key-ind') &&\n                !includesToken(it.sep, 'map-value-ind')) {\n                if (it.key)\n                    it.value = it.key;\n                delete it.key;\n                if (isFlowToken(it.value)) {\n                    if (it.value.end)\n                        Array.prototype.push.apply(it.value.end, it.sep);\n                    else\n                        it.value.end = it.sep;\n                }\n                else\n                    Array.prototype.push.apply(it.start, it.sep);\n                delete it.sep;\n            }\n        }\n    }\n}\n/**\n * A YAML concrete syntax tree (CST) parser\n *\n * ```ts\n * const src: string = ...\n * for (const token of new Parser().parse(src)) {\n *   // token: Token\n * }\n * ```\n *\n * To use the parser with a user-provided lexer:\n *\n * ```ts\n * function* parse(source: string, lexer: Lexer) {\n *   const parser = new Parser()\n *   for (const lexeme of lexer.lex(source))\n *     yield* parser.next(lexeme)\n *   yield* parser.end()\n * }\n *\n * const src: string = ...\n * const lexer = new Lexer()\n * for (const token of parse(src, lexer)) {\n *   // token: Token\n * }\n * ```\n */\nclass Parser {\n    /**\n     * @param onNewLine - If defined, called separately with the start position of\n     *   each new line (in `parse()`, including the start of input).\n     */\n    constructor(onNewLine) {\n        /** If true, space and sequence indicators count as indentation */\n        this.atNewLine = true;\n        /** If true, next token is a scalar value */\n        this.atScalar = false;\n        /** Current indentation level */\n        this.indent = 0;\n        /** Current offset since the start of parsing */\n        this.offset = 0;\n        /** On the same line with a block map key */\n        this.onKeyLine = false;\n        /** Top indicates the node that's currently being built */\n        this.stack = [];\n        /** The source of the current token, set in parse() */\n        this.source = '';\n        /** The type of the current token, set in parse() */\n        this.type = '';\n        // Must be defined after `next()`\n        this.lexer = new lexer.Lexer();\n        this.onNewLine = onNewLine;\n    }\n    /**\n     * Parse `source` as a YAML stream.\n     * If `incomplete`, a part of the last line may be left as a buffer for the next call.\n     *\n     * Errors are not thrown, but yielded as `{ type: 'error', message }` tokens.\n     *\n     * @returns A generator of tokens representing each directive, document, and other structure.\n     */\n    *parse(source, incomplete = false) {\n        if (this.onNewLine && this.offset === 0)\n            this.onNewLine(0);\n        for (const lexeme of this.lexer.lex(source, incomplete))\n            yield* this.next(lexeme);\n        if (!incomplete)\n            yield* this.end();\n    }\n    /**\n     * Advance the parser by the `source` of one lexical token.\n     */\n    *next(source) {\n        this.source = source;\n        if (process.env.LOG_TOKENS)\n            console.log('|', cst.prettyToken(source));\n        if (this.atScalar) {\n            this.atScalar = false;\n            yield* this.step();\n            this.offset += source.length;\n            return;\n        }\n        const type = cst.tokenType(source);\n        if (!type) {\n            const message = `Not a YAML token: ${source}`;\n            yield* this.pop({ type: 'error', offset: this.offset, message, source });\n            this.offset += source.length;\n        }\n        else if (type === 'scalar') {\n            this.atNewLine = false;\n            this.atScalar = true;\n            this.type = 'scalar';\n        }\n        else {\n            this.type = type;\n            yield* this.step();\n            switch (type) {\n                case 'newline':\n                    this.atNewLine = true;\n                    this.indent = 0;\n                    if (this.onNewLine)\n                        this.onNewLine(this.offset + source.length);\n                    break;\n                case 'space':\n                    if (this.atNewLine && source[0] === ' ')\n                        this.indent += source.length;\n                    break;\n                case 'explicit-key-ind':\n                case 'map-value-ind':\n                case 'seq-item-ind':\n                    if (this.atNewLine)\n                        this.indent += source.length;\n                    break;\n                case 'doc-mode':\n                case 'flow-error-end':\n                    return;\n                default:\n                    this.atNewLine = false;\n            }\n            this.offset += source.length;\n        }\n    }\n    /** Call at end of input to push out any remaining constructions */\n    *end() {\n        while (this.stack.length > 0)\n            yield* this.pop();\n    }\n    get sourceToken() {\n        const st = {\n            type: this.type,\n            offset: this.offset,\n            indent: this.indent,\n            source: this.source\n        };\n        return st;\n    }\n    *step() {\n        const top = this.peek(1);\n        if (this.type === 'doc-end' && (!top || top.type !== 'doc-end')) {\n            while (this.stack.length > 0)\n                yield* this.pop();\n            this.stack.push({\n                type: 'doc-end',\n                offset: this.offset,\n                source: this.source\n            });\n            return;\n        }\n        if (!top)\n            return yield* this.stream();\n        switch (top.type) {\n            case 'document':\n                return yield* this.document(top);\n            case 'alias':\n            case 'scalar':\n            case 'single-quoted-scalar':\n            case 'double-quoted-scalar':\n                return yield* this.scalar(top);\n            case 'block-scalar':\n                return yield* this.blockScalar(top);\n            case 'block-map':\n                return yield* this.blockMap(top);\n            case 'block-seq':\n                return yield* this.blockSequence(top);\n            case 'flow-collection':\n                return yield* this.flowCollection(top);\n            case 'doc-end':\n                return yield* this.documentEnd(top);\n        }\n        /* istanbul ignore next should not happen */\n        yield* this.pop();\n    }\n    peek(n) {\n        return this.stack[this.stack.length - n];\n    }\n    *pop(error) {\n        const token = error ?? this.stack.pop();\n        /* istanbul ignore if should not happen */\n        if (!token) {\n            const message = 'Tried to pop an empty stack';\n            yield { type: 'error', offset: this.offset, source: '', message };\n        }\n        else if (this.stack.length === 0) {\n            yield token;\n        }\n        else {\n            const top = this.peek(1);\n            if (token.type === 'block-scalar') {\n                // Block scalars use their parent rather than header indent\n                token.indent = 'indent' in top ? top.indent : 0;\n            }\n            else if (token.type === 'flow-collection' && top.type === 'document') {\n                // Ignore all indent for top-level flow collections\n                token.indent = 0;\n            }\n            if (token.type === 'flow-collection')\n                fixFlowSeqItems(token);\n            switch (top.type) {\n                case 'document':\n                    top.value = token;\n                    break;\n                case 'block-scalar':\n                    top.props.push(token); // error\n                    break;\n                case 'block-map': {\n                    const it = top.items[top.items.length - 1];\n                    if (it.value) {\n                        top.items.push({ start: [], key: token, sep: [] });\n                        this.onKeyLine = true;\n                        return;\n                    }\n                    else if (it.sep) {\n                        it.value = token;\n                    }\n                    else {\n                        Object.assign(it, { key: token, sep: [] });\n                        this.onKeyLine = !includesToken(it.start, 'explicit-key-ind');\n                        return;\n                    }\n                    break;\n                }\n                case 'block-seq': {\n                    const it = top.items[top.items.length - 1];\n                    if (it.value)\n                        top.items.push({ start: [], value: token });\n                    else\n                        it.value = token;\n                    break;\n                }\n                case 'flow-collection': {\n                    const it = top.items[top.items.length - 1];\n                    if (!it || it.value)\n                        top.items.push({ start: [], key: token, sep: [] });\n                    else if (it.sep)\n                        it.value = token;\n                    else\n                        Object.assign(it, { key: token, sep: [] });\n                    return;\n                }\n                /* istanbul ignore next should not happen */\n                default:\n                    yield* this.pop();\n                    yield* this.pop(token);\n            }\n            if ((top.type === 'document' ||\n                top.type === 'block-map' ||\n                top.type === 'block-seq') &&\n                (token.type === 'block-map' || token.type === 'block-seq')) {\n                const last = token.items[token.items.length - 1];\n                if (last &&\n                    !last.sep &&\n                    !last.value &&\n                    last.start.length > 0 &&\n                    findNonEmptyIndex(last.start) === -1 &&\n                    (token.indent === 0 ||\n                        last.start.every(st => st.type !== 'comment' || st.indent < token.indent))) {\n                    if (top.type === 'document')\n                        top.end = last.start;\n                    else\n                        top.items.push({ start: last.start });\n                    token.items.splice(-1, 1);\n                }\n            }\n        }\n    }\n    *stream() {\n        switch (this.type) {\n            case 'directive-line':\n                yield { type: 'directive', offset: this.offset, source: this.source };\n                return;\n            case 'byte-order-mark':\n            case 'space':\n            case 'comment':\n            case 'newline':\n                yield this.sourceToken;\n                return;\n            case 'doc-mode':\n            case 'doc-start': {\n                const doc = {\n                    type: 'document',\n                    offset: this.offset,\n                    start: []\n                };\n                if (this.type === 'doc-start')\n                    doc.start.push(this.sourceToken);\n                this.stack.push(doc);\n                return;\n            }\n        }\n        yield {\n            type: 'error',\n            offset: this.offset,\n            message: `Unexpected ${this.type} token in YAML stream`,\n            source: this.source\n        };\n    }\n    *document(doc) {\n        if (doc.value)\n            return yield* this.lineEnd(doc);\n        switch (this.type) {\n            case 'doc-start': {\n                if (findNonEmptyIndex(doc.start) !== -1) {\n                    yield* this.pop();\n                    yield* this.step();\n                }\n                else\n                    doc.start.push(this.sourceToken);\n                return;\n            }\n            case 'anchor':\n            case 'tag':\n            case 'space':\n            case 'comment':\n            case 'newline':\n                doc.start.push(this.sourceToken);\n                return;\n        }\n        const bv = this.startBlockValue(doc);\n        if (bv)\n            this.stack.push(bv);\n        else {\n            yield {\n                type: 'error',\n                offset: this.offset,\n                message: `Unexpected ${this.type} token in YAML document`,\n                source: this.source\n            };\n        }\n    }\n    *scalar(scalar) {\n        if (this.type === 'map-value-ind') {\n            const prev = getPrevProps(this.peek(2));\n            const start = getFirstKeyStartProps(prev);\n            let sep;\n            if (scalar.end) {\n                sep = scalar.end;\n                sep.push(this.sourceToken);\n                delete scalar.end;\n            }\n            else\n                sep = [this.sourceToken];\n            const map = {\n                type: 'block-map',\n                offset: scalar.offset,\n                indent: scalar.indent,\n                items: [{ start, key: scalar, sep }]\n            };\n            this.onKeyLine = true;\n            this.stack[this.stack.length - 1] = map;\n        }\n        else\n            yield* this.lineEnd(scalar);\n    }\n    *blockScalar(scalar) {\n        switch (this.type) {\n            case 'space':\n            case 'comment':\n            case 'newline':\n                scalar.props.push(this.sourceToken);\n                return;\n            case 'scalar':\n                scalar.source = this.source;\n                // block-scalar source includes trailing newline\n                this.atNewLine = true;\n                this.indent = 0;\n                if (this.onNewLine) {\n                    let nl = this.source.indexOf('\\n') + 1;\n                    while (nl !== 0) {\n                        this.onNewLine(this.offset + nl);\n                        nl = this.source.indexOf('\\n', nl) + 1;\n                    }\n                }\n                yield* this.pop();\n                break;\n            /* istanbul ignore next should not happen */\n            default:\n                yield* this.pop();\n                yield* this.step();\n        }\n    }\n    *blockMap(map) {\n        const it = map.items[map.items.length - 1];\n        // it.sep is true-ish if pair already has key or : separator\n        switch (this.type) {\n            case 'newline':\n                this.onKeyLine = false;\n                if (it.value) {\n                    const end = 'end' in it.value ? it.value.end : undefined;\n                    const last = Array.isArray(end) ? end[end.length - 1] : undefined;\n                    if (last?.type === 'comment')\n                        end?.push(this.sourceToken);\n                    else\n                        map.items.push({ start: [this.sourceToken] });\n                }\n                else if (it.sep) {\n                    it.sep.push(this.sourceToken);\n                }\n                else {\n                    it.start.push(this.sourceToken);\n                }\n                return;\n            case 'space':\n            case 'comment':\n                if (it.value) {\n                    map.items.push({ start: [this.sourceToken] });\n                }\n                else if (it.sep) {\n                    it.sep.push(this.sourceToken);\n                }\n                else {\n                    if (this.atIndentedComment(it.start, map.indent)) {\n                        const prev = map.items[map.items.length - 2];\n                        const end = prev?.value?.end;\n                        if (Array.isArray(end)) {\n                            Array.prototype.push.apply(end, it.start);\n                            end.push(this.sourceToken);\n                            map.items.pop();\n                            return;\n                        }\n                    }\n                    it.start.push(this.sourceToken);\n                }\n                return;\n        }\n        if (this.indent >= map.indent) {\n            const atNextItem = !this.onKeyLine && this.indent === map.indent && it.sep;\n            // For empty nodes, assign newline-separated not indented empty tokens to following node\n            let start = [];\n            if (atNextItem && it.sep && !it.value) {\n                const nl = [];\n                for (let i = 0; i < it.sep.length; ++i) {\n                    const st = it.sep[i];\n                    switch (st.type) {\n                        case 'newline':\n                            nl.push(i);\n                            break;\n                        case 'space':\n                            break;\n                        case 'comment':\n                            if (st.indent > map.indent)\n                                nl.length = 0;\n                            break;\n                        default:\n                            nl.length = 0;\n                    }\n                }\n                if (nl.length >= 2)\n                    start = it.sep.splice(nl[1]);\n            }\n            switch (this.type) {\n                case 'anchor':\n                case 'tag':\n                    if (atNextItem || it.value) {\n                        start.push(this.sourceToken);\n                        map.items.push({ start });\n                        this.onKeyLine = true;\n                    }\n                    else if (it.sep) {\n                        it.sep.push(this.sourceToken);\n                    }\n                    else {\n                        it.start.push(this.sourceToken);\n                    }\n                    return;\n                case 'explicit-key-ind':\n                    if (!it.sep && !includesToken(it.start, 'explicit-key-ind')) {\n                        it.start.push(this.sourceToken);\n                    }\n                    else if (atNextItem || it.value) {\n                        start.push(this.sourceToken);\n                        map.items.push({ start });\n                    }\n                    else {\n                        this.stack.push({\n                            type: 'block-map',\n                            offset: this.offset,\n                            indent: this.indent,\n                            items: [{ start: [this.sourceToken] }]\n                        });\n                    }\n                    this.onKeyLine = true;\n                    return;\n                case 'map-value-ind':\n                    if (includesToken(it.start, 'explicit-key-ind')) {\n                        if (!it.sep) {\n                            if (includesToken(it.start, 'newline')) {\n                                Object.assign(it, { key: null, sep: [this.sourceToken] });\n                            }\n                            else {\n                                const start = getFirstKeyStartProps(it.start);\n                                this.stack.push({\n                                    type: 'block-map',\n                                    offset: this.offset,\n                                    indent: this.indent,\n                                    items: [{ start, key: null, sep: [this.sourceToken] }]\n                                });\n                            }\n                        }\n                        else if (it.value) {\n                            map.items.push({ start: [], key: null, sep: [this.sourceToken] });\n                        }\n                        else if (includesToken(it.sep, 'map-value-ind')) {\n                            this.stack.push({\n                                type: 'block-map',\n                                offset: this.offset,\n                                indent: this.indent,\n                                items: [{ start, key: null, sep: [this.sourceToken] }]\n                            });\n                        }\n                        else if (isFlowToken(it.key) &&\n                            !includesToken(it.sep, 'newline')) {\n                            const start = getFirstKeyStartProps(it.start);\n                            const key = it.key;\n                            const sep = it.sep;\n                            sep.push(this.sourceToken);\n                            // @ts-expect-error type guard is wrong here\n                            delete it.key, delete it.sep;\n                            this.stack.push({\n                                type: 'block-map',\n                                offset: this.offset,\n                                indent: this.indent,\n                                items: [{ start, key, sep }]\n                            });\n                        }\n                        else if (start.length > 0) {\n                            // Not actually at next item\n                            it.sep = it.sep.concat(start, this.sourceToken);\n                        }\n                        else {\n                            it.sep.push(this.sourceToken);\n                        }\n                    }\n                    else {\n                        if (!it.sep) {\n                            Object.assign(it, { key: null, sep: [this.sourceToken] });\n                        }\n                        else if (it.value || atNextItem) {\n                            map.items.push({ start, key: null, sep: [this.sourceToken] });\n                        }\n                        else if (includesToken(it.sep, 'map-value-ind')) {\n                            this.stack.push({\n                                type: 'block-map',\n                                offset: this.offset,\n                                indent: this.indent,\n                                items: [{ start: [], key: null, sep: [this.sourceToken] }]\n                            });\n                        }\n                        else {\n                            it.sep.push(this.sourceToken);\n                        }\n                    }\n                    this.onKeyLine = true;\n                    return;\n                case 'alias':\n                case 'scalar':\n                case 'single-quoted-scalar':\n                case 'double-quoted-scalar': {\n                    const fs = this.flowScalar(this.type);\n                    if (atNextItem || it.value) {\n                        map.items.push({ start, key: fs, sep: [] });\n                        this.onKeyLine = true;\n                    }\n                    else if (it.sep) {\n                        this.stack.push(fs);\n                    }\n                    else {\n                        Object.assign(it, { key: fs, sep: [] });\n                        this.onKeyLine = true;\n                    }\n                    return;\n                }\n                default: {\n                    const bv = this.startBlockValue(map);\n                    if (bv) {\n                        if (atNextItem &&\n                            bv.type !== 'block-seq' &&\n                            includesToken(it.start, 'explicit-key-ind')) {\n                            map.items.push({ start });\n                        }\n                        this.stack.push(bv);\n                        return;\n                    }\n                }\n            }\n        }\n        yield* this.pop();\n        yield* this.step();\n    }\n    *blockSequence(seq) {\n        const it = seq.items[seq.items.length - 1];\n        switch (this.type) {\n            case 'newline':\n                if (it.value) {\n                    const end = 'end' in it.value ? it.value.end : undefined;\n                    const last = Array.isArray(end) ? end[end.length - 1] : undefined;\n                    if (last?.type === 'comment')\n                        end?.push(this.sourceToken);\n                    else\n                        seq.items.push({ start: [this.sourceToken] });\n                }\n                else\n                    it.start.push(this.sourceToken);\n                return;\n            case 'space':\n            case 'comment':\n                if (it.value)\n                    seq.items.push({ start: [this.sourceToken] });\n                else {\n                    if (this.atIndentedComment(it.start, seq.indent)) {\n                        const prev = seq.items[seq.items.length - 2];\n                        const end = prev?.value?.end;\n                        if (Array.isArray(end)) {\n                            Array.prototype.push.apply(end, it.start);\n                            end.push(this.sourceToken);\n                            seq.items.pop();\n                            return;\n                        }\n                    }\n                    it.start.push(this.sourceToken);\n                }\n                return;\n            case 'anchor':\n            case 'tag':\n                if (it.value || this.indent <= seq.indent)\n                    break;\n                it.start.push(this.sourceToken);\n                return;\n            case 'seq-item-ind':\n                if (this.indent !== seq.indent)\n                    break;\n                if (it.value || includesToken(it.start, 'seq-item-ind'))\n                    seq.items.push({ start: [this.sourceToken] });\n                else\n                    it.start.push(this.sourceToken);\n                return;\n        }\n        if (this.indent > seq.indent) {\n            const bv = this.startBlockValue(seq);\n            if (bv) {\n                this.stack.push(bv);\n                return;\n            }\n        }\n        yield* this.pop();\n        yield* this.step();\n    }\n    *flowCollection(fc) {\n        const it = fc.items[fc.items.length - 1];\n        if (this.type === 'flow-error-end') {\n            let top;\n            do {\n                yield* this.pop();\n                top = this.peek(1);\n            } while (top && top.type === 'flow-collection');\n        }\n        else if (fc.end.length === 0) {\n            switch (this.type) {\n                case 'comma':\n                case 'explicit-key-ind':\n                    if (!it || it.sep)\n                        fc.items.push({ start: [this.sourceToken] });\n                    else\n                        it.start.push(this.sourceToken);\n                    return;\n                case 'map-value-ind':\n                    if (!it || it.value)\n                        fc.items.push({ start: [], key: null, sep: [this.sourceToken] });\n                    else if (it.sep)\n                        it.sep.push(this.sourceToken);\n                    else\n                        Object.assign(it, { key: null, sep: [this.sourceToken] });\n                    return;\n                case 'space':\n                case 'comment':\n                case 'newline':\n                case 'anchor':\n                case 'tag':\n                    if (!it || it.value)\n                        fc.items.push({ start: [this.sourceToken] });\n                    else if (it.sep)\n                        it.sep.push(this.sourceToken);\n                    else\n                        it.start.push(this.sourceToken);\n                    return;\n                case 'alias':\n                case 'scalar':\n                case 'single-quoted-scalar':\n                case 'double-quoted-scalar': {\n                    const fs = this.flowScalar(this.type);\n                    if (!it || it.value)\n                        fc.items.push({ start: [], key: fs, sep: [] });\n                    else if (it.sep)\n                        this.stack.push(fs);\n                    else\n                        Object.assign(it, { key: fs, sep: [] });\n                    return;\n                }\n                case 'flow-map-end':\n                case 'flow-seq-end':\n                    fc.end.push(this.sourceToken);\n                    return;\n            }\n            const bv = this.startBlockValue(fc);\n            /* istanbul ignore else should not happen */\n            if (bv)\n                this.stack.push(bv);\n            else {\n                yield* this.pop();\n                yield* this.step();\n            }\n        }\n        else {\n            const parent = this.peek(2);\n            if (parent.type === 'block-map' &&\n                ((this.type === 'map-value-ind' && parent.indent === fc.indent) ||\n                    (this.type === 'newline' &&\n                        !parent.items[parent.items.length - 1].sep))) {\n                yield* this.pop();\n                yield* this.step();\n            }\n            else if (this.type === 'map-value-ind' &&\n                parent.type !== 'flow-collection') {\n                const prev = getPrevProps(parent);\n                const start = getFirstKeyStartProps(prev);\n                fixFlowSeqItems(fc);\n                const sep = fc.end.splice(1, fc.end.length);\n                sep.push(this.sourceToken);\n                const map = {\n                    type: 'block-map',\n                    offset: fc.offset,\n                    indent: fc.indent,\n                    items: [{ start, key: fc, sep }]\n                };\n                this.onKeyLine = true;\n                this.stack[this.stack.length - 1] = map;\n            }\n            else {\n                yield* this.lineEnd(fc);\n            }\n        }\n    }\n    flowScalar(type) {\n        if (this.onNewLine) {\n            let nl = this.source.indexOf('\\n') + 1;\n            while (nl !== 0) {\n                this.onNewLine(this.offset + nl);\n                nl = this.source.indexOf('\\n', nl) + 1;\n            }\n        }\n        return {\n            type,\n            offset: this.offset,\n            indent: this.indent,\n            source: this.source\n        };\n    }\n    startBlockValue(parent) {\n        switch (this.type) {\n            case 'alias':\n            case 'scalar':\n            case 'single-quoted-scalar':\n            case 'double-quoted-scalar':\n                return this.flowScalar(this.type);\n            case 'block-scalar-header':\n                return {\n                    type: 'block-scalar',\n                    offset: this.offset,\n                    indent: this.indent,\n                    props: [this.sourceToken],\n                    source: ''\n                };\n            case 'flow-map-start':\n            case 'flow-seq-start':\n                return {\n                    type: 'flow-collection',\n                    offset: this.offset,\n                    indent: this.indent,\n                    start: this.sourceToken,\n                    items: [],\n                    end: []\n                };\n            case 'seq-item-ind':\n                return {\n                    type: 'block-seq',\n                    offset: this.offset,\n                    indent: this.indent,\n                    items: [{ start: [this.sourceToken] }]\n                };\n            case 'explicit-key-ind': {\n                this.onKeyLine = true;\n                const prev = getPrevProps(parent);\n                const start = getFirstKeyStartProps(prev);\n                start.push(this.sourceToken);\n                return {\n                    type: 'block-map',\n                    offset: this.offset,\n                    indent: this.indent,\n                    items: [{ start }]\n                };\n            }\n            case 'map-value-ind': {\n                this.onKeyLine = true;\n                const prev = getPrevProps(parent);\n                const start = getFirstKeyStartProps(prev);\n                return {\n                    type: 'block-map',\n                    offset: this.offset,\n                    indent: this.indent,\n                    items: [{ start, key: null, sep: [this.sourceToken] }]\n                };\n            }\n        }\n        return null;\n    }\n    atIndentedComment(start, indent) {\n        if (this.type !== 'comment')\n            return false;\n        if (this.indent <= indent)\n            return false;\n        return start.every(st => st.type === 'newline' || st.type === 'space');\n    }\n    *documentEnd(docEnd) {\n        if (this.type !== 'doc-mode') {\n            if (docEnd.end)\n                docEnd.end.push(this.sourceToken);\n            else\n                docEnd.end = [this.sourceToken];\n            if (this.type === 'newline')\n                yield* this.pop();\n        }\n    }\n    *lineEnd(token) {\n        switch (this.type) {\n            case 'comma':\n            case 'doc-start':\n            case 'doc-end':\n            case 'flow-seq-end':\n            case 'flow-map-end':\n            case 'map-value-ind':\n                yield* this.pop();\n                yield* this.step();\n                break;\n            case 'newline':\n                this.onKeyLine = false;\n            // fallthrough\n            case 'space':\n            case 'comment':\n            default:\n                // all other values are errors\n                if (token.end)\n                    token.end.push(this.sourceToken);\n                else\n                    token.end = [this.sourceToken];\n                if (this.type === 'newline')\n                    yield* this.pop();\n        }\n    }\n}\n\nexports.Parser = Parser;\n","'use strict';\n\nvar composer = require('./compose/composer.js');\nvar Document = require('./doc/Document.js');\nvar errors = require('./errors.js');\nvar log = require('./log.js');\nvar lineCounter = require('./parse/line-counter.js');\nvar parser = require('./parse/parser.js');\n\nfunction parseOptions(options) {\n    const prettyErrors = options.prettyErrors !== false;\n    const lineCounter$1 = options.lineCounter || (prettyErrors && new lineCounter.LineCounter()) || null;\n    return { lineCounter: lineCounter$1, prettyErrors };\n}\n/**\n * Parse the input as a stream of YAML documents.\n *\n * Documents should be separated from each other by `...` or `---` marker lines.\n *\n * @returns If an empty `docs` array is returned, it will be of type\n *   EmptyStream and contain additional stream information. In\n *   TypeScript, you should use `'empty' in docs` as a type guard for it.\n */\nfunction parseAllDocuments(source, options = {}) {\n    const { lineCounter, prettyErrors } = parseOptions(options);\n    const parser$1 = new parser.Parser(lineCounter?.addNewLine);\n    const composer$1 = new composer.Composer(options);\n    const docs = Array.from(composer$1.compose(parser$1.parse(source)));\n    if (prettyErrors && lineCounter)\n        for (const doc of docs) {\n            doc.errors.forEach(errors.prettifyError(source, lineCounter));\n            doc.warnings.forEach(errors.prettifyError(source, lineCounter));\n        }\n    if (docs.length > 0)\n        return docs;\n    return Object.assign([], { empty: true }, composer$1.streamInfo());\n}\n/** Parse an input string into a single YAML.Document */\nfunction parseDocument(source, options = {}) {\n    const { lineCounter, prettyErrors } = parseOptions(options);\n    const parser$1 = new parser.Parser(lineCounter?.addNewLine);\n    const composer$1 = new composer.Composer(options);\n    // `doc` is always set by compose.end(true) at the very latest\n    let doc = null;\n    for (const _doc of composer$1.compose(parser$1.parse(source), true, source.length)) {\n        if (!doc)\n            doc = _doc;\n        else if (doc.options.logLevel !== 'silent') {\n            doc.errors.push(new errors.YAMLParseError(_doc.range.slice(0, 2), 'MULTIPLE_DOCS', 'Source contains multiple documents; please use YAML.parseAllDocuments()'));\n            break;\n        }\n    }\n    if (prettyErrors && lineCounter) {\n        doc.errors.forEach(errors.prettifyError(source, lineCounter));\n        doc.warnings.forEach(errors.prettifyError(source, lineCounter));\n    }\n    return doc;\n}\nfunction parse(src, reviver, options) {\n    let _reviver = undefined;\n    if (typeof reviver === 'function') {\n        _reviver = reviver;\n    }\n    else if (options === undefined && reviver && typeof reviver === 'object') {\n        options = reviver;\n    }\n    const doc = parseDocument(src, options);\n    if (!doc)\n        return null;\n    doc.warnings.forEach(warning => log.warn(doc.options.logLevel, warning));\n    if (doc.errors.length > 0) {\n        if (doc.options.logLevel !== 'silent')\n            throw doc.errors[0];\n        else\n            doc.errors = [];\n    }\n    return doc.toJS(Object.assign({ reviver: _reviver }, options));\n}\nfunction stringify(value, replacer, options) {\n    let _replacer = null;\n    if (typeof replacer === 'function' || Array.isArray(replacer)) {\n        _replacer = replacer;\n    }\n    else if (options === undefined && replacer) {\n        options = replacer;\n    }\n    if (typeof options === 'string')\n        options = options.length;\n    if (typeof options === 'number') {\n        const indent = Math.round(options);\n        options = indent < 1 ? undefined : indent > 8 ? { indent: 8 } : { indent };\n    }\n    if (value === undefined) {\n        const { keepUndefined } = options ?? replacer ?? {};\n        if (!keepUndefined)\n            return undefined;\n    }\n    return new Document.Document(value, _replacer, options).toString(options);\n}\n\nexports.parse = parse;\nexports.parseAllDocuments = parseAllDocuments;\nexports.parseDocument = parseDocument;\nexports.stringify = stringify;\n","'use strict';\n\nvar Node = require('../nodes/Node.js');\nvar map = require('./common/map.js');\nvar seq = require('./common/seq.js');\nvar string = require('./common/string.js');\nvar tags = require('./tags.js');\n\nconst sortMapEntriesByKey = (a, b) => a.key < b.key ? -1 : a.key > b.key ? 1 : 0;\nclass Schema {\n    constructor({ compat, customTags, merge, resolveKnownTags, schema, sortMapEntries, toStringDefaults }) {\n        this.compat = Array.isArray(compat)\n            ? tags.getTags(compat, 'compat')\n            : compat\n                ? tags.getTags(null, compat)\n                : null;\n        this.merge = !!merge;\n        this.name = (typeof schema === 'string' && schema) || 'core';\n        this.knownTags = resolveKnownTags ? tags.coreKnownTags : {};\n        this.tags = tags.getTags(customTags, this.name);\n        this.toStringOptions = toStringDefaults ?? null;\n        Object.defineProperty(this, Node.MAP, { value: map.map });\n        Object.defineProperty(this, Node.SCALAR, { value: string.string });\n        Object.defineProperty(this, Node.SEQ, { value: seq.seq });\n        // Used by createMap()\n        this.sortMapEntries =\n            typeof sortMapEntries === 'function'\n                ? sortMapEntries\n                : sortMapEntries === true\n                    ? sortMapEntriesByKey\n                    : null;\n    }\n    clone() {\n        const copy = Object.create(Schema.prototype, Object.getOwnPropertyDescriptors(this));\n        copy.tags = this.tags.slice();\n        return copy;\n    }\n}\n\nexports.Schema = Schema;\n","'use strict';\n\nvar Node = require('../../nodes/Node.js');\nvar Pair = require('../../nodes/Pair.js');\nvar YAMLMap = require('../../nodes/YAMLMap.js');\n\nfunction createMap(schema, obj, ctx) {\n    const { keepUndefined, replacer } = ctx;\n    const map = new YAMLMap.YAMLMap(schema);\n    const add = (key, value) => {\n        if (typeof replacer === 'function')\n            value = replacer.call(obj, key, value);\n        else if (Array.isArray(replacer) && !replacer.includes(key))\n            return;\n        if (value !== undefined || keepUndefined)\n            map.items.push(Pair.createPair(key, value, ctx));\n    };\n    if (obj instanceof Map) {\n        for (const [key, value] of obj)\n            add(key, value);\n    }\n    else if (obj && typeof obj === 'object') {\n        for (const key of Object.keys(obj))\n            add(key, obj[key]);\n    }\n    if (typeof schema.sortMapEntries === 'function') {\n        map.items.sort(schema.sortMapEntries);\n    }\n    return map;\n}\nconst map = {\n    collection: 'map',\n    createNode: createMap,\n    default: true,\n    nodeClass: YAMLMap.YAMLMap,\n    tag: 'tag:yaml.org,2002:map',\n    resolve(map, onError) {\n        if (!Node.isMap(map))\n            onError('Expected a mapping for this tag');\n        return map;\n    }\n};\n\nexports.map = map;\n","'use strict';\n\nvar Scalar = require('../../nodes/Scalar.js');\n\nconst nullTag = {\n    identify: value => value == null,\n    createNode: () => new Scalar.Scalar(null),\n    default: true,\n    tag: 'tag:yaml.org,2002:null',\n    test: /^(?:~|[Nn]ull|NULL)?$/,\n    resolve: () => new Scalar.Scalar(null),\n    stringify: ({ source }, ctx) => typeof source === 'string' && nullTag.test.test(source)\n        ? source\n        : ctx.options.nullStr\n};\n\nexports.nullTag = nullTag;\n","'use strict';\n\nvar createNode = require('../../doc/createNode.js');\nvar Node = require('../../nodes/Node.js');\nvar YAMLSeq = require('../../nodes/YAMLSeq.js');\n\nfunction createSeq(schema, obj, ctx) {\n    const { replacer } = ctx;\n    const seq = new YAMLSeq.YAMLSeq(schema);\n    if (obj && Symbol.iterator in Object(obj)) {\n        let i = 0;\n        for (let it of obj) {\n            if (typeof replacer === 'function') {\n                const key = obj instanceof Set ? it : String(i++);\n                it = replacer.call(obj, key, it);\n            }\n            seq.items.push(createNode.createNode(it, undefined, ctx));\n        }\n    }\n    return seq;\n}\nconst seq = {\n    collection: 'seq',\n    createNode: createSeq,\n    default: true,\n    nodeClass: YAMLSeq.YAMLSeq,\n    tag: 'tag:yaml.org,2002:seq',\n    resolve(seq, onError) {\n        if (!Node.isSeq(seq))\n            onError('Expected a sequence for this tag');\n        return seq;\n    }\n};\n\nexports.seq = seq;\n","'use strict';\n\nvar stringifyString = require('../../stringify/stringifyString.js');\n\nconst string = {\n    identify: value => typeof value === 'string',\n    default: true,\n    tag: 'tag:yaml.org,2002:str',\n    resolve: str => str,\n    stringify(item, ctx, onComment, onChompKeep) {\n        ctx = Object.assign({ actualString: true }, ctx);\n        return stringifyString.stringifyString(item, ctx, onComment, onChompKeep);\n    }\n};\n\nexports.string = string;\n","'use strict';\n\nvar Scalar = require('../../nodes/Scalar.js');\n\nconst boolTag = {\n    identify: value => typeof value === 'boolean',\n    default: true,\n    tag: 'tag:yaml.org,2002:bool',\n    test: /^(?:[Tt]rue|TRUE|[Ff]alse|FALSE)$/,\n    resolve: str => new Scalar.Scalar(str[0] === 't' || str[0] === 'T'),\n    stringify({ source, value }, ctx) {\n        if (source && boolTag.test.test(source)) {\n            const sv = source[0] === 't' || source[0] === 'T';\n            if (value === sv)\n                return source;\n        }\n        return value ? ctx.options.trueStr : ctx.options.falseStr;\n    }\n};\n\nexports.boolTag = boolTag;\n","'use strict';\n\nvar Scalar = require('../../nodes/Scalar.js');\nvar stringifyNumber = require('../../stringify/stringifyNumber.js');\n\nconst floatNaN = {\n    identify: value => typeof value === 'number',\n    default: true,\n    tag: 'tag:yaml.org,2002:float',\n    test: /^(?:[-+]?\\.(?:inf|Inf|INF|nan|NaN|NAN))$/,\n    resolve: str => str.slice(-3).toLowerCase() === 'nan'\n        ? NaN\n        : str[0] === '-'\n            ? Number.NEGATIVE_INFINITY\n            : Number.POSITIVE_INFINITY,\n    stringify: stringifyNumber.stringifyNumber\n};\nconst floatExp = {\n    identify: value => typeof value === 'number',\n    default: true,\n    tag: 'tag:yaml.org,2002:float',\n    format: 'EXP',\n    test: /^[-+]?(?:\\.[0-9]+|[0-9]+(?:\\.[0-9]*)?)[eE][-+]?[0-9]+$/,\n    resolve: str => parseFloat(str),\n    stringify(node) {\n        const num = Number(node.value);\n        return isFinite(num) ? num.toExponential() : stringifyNumber.stringifyNumber(node);\n    }\n};\nconst float = {\n    identify: value => typeof value === 'number',\n    default: true,\n    tag: 'tag:yaml.org,2002:float',\n    test: /^[-+]?(?:\\.[0-9]+|[0-9]+\\.[0-9]*)$/,\n    resolve(str) {\n        const node = new Scalar.Scalar(parseFloat(str));\n        const dot = str.indexOf('.');\n        if (dot !== -1 && str[str.length - 1] === '0')\n            node.minFractionDigits = str.length - dot - 1;\n        return node;\n    },\n    stringify: stringifyNumber.stringifyNumber\n};\n\nexports.float = float;\nexports.floatExp = floatExp;\nexports.floatNaN = floatNaN;\n","'use strict';\n\nvar stringifyNumber = require('../../stringify/stringifyNumber.js');\n\nconst intIdentify = (value) => typeof value === 'bigint' || Number.isInteger(value);\nconst intResolve = (str, offset, radix, { intAsBigInt }) => (intAsBigInt ? BigInt(str) : parseInt(str.substring(offset), radix));\nfunction intStringify(node, radix, prefix) {\n    const { value } = node;\n    if (intIdentify(value) && value >= 0)\n        return prefix + value.toString(radix);\n    return stringifyNumber.stringifyNumber(node);\n}\nconst intOct = {\n    identify: value => intIdentify(value) && value >= 0,\n    default: true,\n    tag: 'tag:yaml.org,2002:int',\n    format: 'OCT',\n    test: /^0o[0-7]+$/,\n    resolve: (str, _onError, opt) => intResolve(str, 2, 8, opt),\n    stringify: node => intStringify(node, 8, '0o')\n};\nconst int = {\n    identify: intIdentify,\n    default: true,\n    tag: 'tag:yaml.org,2002:int',\n    test: /^[-+]?[0-9]+$/,\n    resolve: (str, _onError, opt) => intResolve(str, 0, 10, opt),\n    stringify: stringifyNumber.stringifyNumber\n};\nconst intHex = {\n    identify: value => intIdentify(value) && value >= 0,\n    default: true,\n    tag: 'tag:yaml.org,2002:int',\n    format: 'HEX',\n    test: /^0x[0-9a-fA-F]+$/,\n    resolve: (str, _onError, opt) => intResolve(str, 2, 16, opt),\n    stringify: node => intStringify(node, 16, '0x')\n};\n\nexports.int = int;\nexports.intHex = intHex;\nexports.intOct = intOct;\n","'use strict';\n\nvar map = require('../common/map.js');\nvar _null = require('../common/null.js');\nvar seq = require('../common/seq.js');\nvar string = require('../common/string.js');\nvar bool = require('./bool.js');\nvar float = require('./float.js');\nvar int = require('./int.js');\n\nconst schema = [\n    map.map,\n    seq.seq,\n    string.string,\n    _null.nullTag,\n    bool.boolTag,\n    int.intOct,\n    int.int,\n    int.intHex,\n    float.floatNaN,\n    float.floatExp,\n    float.float\n];\n\nexports.schema = schema;\n","'use strict';\n\nvar Scalar = require('../../nodes/Scalar.js');\nvar map = require('../common/map.js');\nvar seq = require('../common/seq.js');\n\nfunction intIdentify(value) {\n    return typeof value === 'bigint' || Number.isInteger(value);\n}\nconst stringifyJSON = ({ value }) => JSON.stringify(value);\nconst jsonScalars = [\n    {\n        identify: value => typeof value === 'string',\n        default: true,\n        tag: 'tag:yaml.org,2002:str',\n        resolve: str => str,\n        stringify: stringifyJSON\n    },\n    {\n        identify: value => value == null,\n        createNode: () => new Scalar.Scalar(null),\n        default: true,\n        tag: 'tag:yaml.org,2002:null',\n        test: /^null$/,\n        resolve: () => null,\n        stringify: stringifyJSON\n    },\n    {\n        identify: value => typeof value === 'boolean',\n        default: true,\n        tag: 'tag:yaml.org,2002:bool',\n        test: /^true|false$/,\n        resolve: str => str === 'true',\n        stringify: stringifyJSON\n    },\n    {\n        identify: intIdentify,\n        default: true,\n        tag: 'tag:yaml.org,2002:int',\n        test: /^-?(?:0|[1-9][0-9]*)$/,\n        resolve: (str, _onError, { intAsBigInt }) => intAsBigInt ? BigInt(str) : parseInt(str, 10),\n        stringify: ({ value }) => intIdentify(value) ? value.toString() : JSON.stringify(value)\n    },\n    {\n        identify: value => typeof value === 'number',\n        default: true,\n        tag: 'tag:yaml.org,2002:float',\n        test: /^-?(?:0|[1-9][0-9]*)(?:\\.[0-9]*)?(?:[eE][-+]?[0-9]+)?$/,\n        resolve: str => parseFloat(str),\n        stringify: stringifyJSON\n    }\n];\nconst jsonError = {\n    default: true,\n    tag: '',\n    test: /^/,\n    resolve(str, onError) {\n        onError(`Unresolved plain scalar ${JSON.stringify(str)}`);\n        return str;\n    }\n};\nconst schema = [map.map, seq.seq].concat(jsonScalars, jsonError);\n\nexports.schema = schema;\n","'use strict';\n\nvar map = require('./common/map.js');\nvar _null = require('./common/null.js');\nvar seq = require('./common/seq.js');\nvar string = require('./common/string.js');\nvar bool = require('./core/bool.js');\nvar float = require('./core/float.js');\nvar int = require('./core/int.js');\nvar schema = require('./core/schema.js');\nvar schema$1 = require('./json/schema.js');\nvar binary = require('./yaml-1.1/binary.js');\nvar omap = require('./yaml-1.1/omap.js');\nvar pairs = require('./yaml-1.1/pairs.js');\nvar schema$2 = require('./yaml-1.1/schema.js');\nvar set = require('./yaml-1.1/set.js');\nvar timestamp = require('./yaml-1.1/timestamp.js');\n\nconst schemas = new Map([\n    ['core', schema.schema],\n    ['failsafe', [map.map, seq.seq, string.string]],\n    ['json', schema$1.schema],\n    ['yaml11', schema$2.schema],\n    ['yaml-1.1', schema$2.schema]\n]);\nconst tagsByName = {\n    binary: binary.binary,\n    bool: bool.boolTag,\n    float: float.float,\n    floatExp: float.floatExp,\n    floatNaN: float.floatNaN,\n    floatTime: timestamp.floatTime,\n    int: int.int,\n    intHex: int.intHex,\n    intOct: int.intOct,\n    intTime: timestamp.intTime,\n    map: map.map,\n    null: _null.nullTag,\n    omap: omap.omap,\n    pairs: pairs.pairs,\n    seq: seq.seq,\n    set: set.set,\n    timestamp: timestamp.timestamp\n};\nconst coreKnownTags = {\n    'tag:yaml.org,2002:binary': binary.binary,\n    'tag:yaml.org,2002:omap': omap.omap,\n    'tag:yaml.org,2002:pairs': pairs.pairs,\n    'tag:yaml.org,2002:set': set.set,\n    'tag:yaml.org,2002:timestamp': timestamp.timestamp\n};\nfunction getTags(customTags, schemaName) {\n    let tags = schemas.get(schemaName);\n    if (!tags) {\n        if (Array.isArray(customTags))\n            tags = [];\n        else {\n            const keys = Array.from(schemas.keys())\n                .filter(key => key !== 'yaml11')\n                .map(key => JSON.stringify(key))\n                .join(', ');\n            throw new Error(`Unknown schema \"${schemaName}\"; use one of ${keys} or define customTags array`);\n        }\n    }\n    if (Array.isArray(customTags)) {\n        for (const tag of customTags)\n            tags = tags.concat(tag);\n    }\n    else if (typeof customTags === 'function') {\n        tags = customTags(tags.slice());\n    }\n    return tags.map(tag => {\n        if (typeof tag !== 'string')\n            return tag;\n        const tagObj = tagsByName[tag];\n        if (tagObj)\n            return tagObj;\n        const keys = Object.keys(tagsByName)\n            .map(key => JSON.stringify(key))\n            .join(', ');\n        throw new Error(`Unknown custom tag \"${tag}\"; use one of ${keys}`);\n    });\n}\n\nexports.coreKnownTags = coreKnownTags;\nexports.getTags = getTags;\n","'use strict';\n\nvar Scalar = require('../../nodes/Scalar.js');\nvar stringifyString = require('../../stringify/stringifyString.js');\n\nconst binary = {\n    identify: value => value instanceof Uint8Array,\n    default: false,\n    tag: 'tag:yaml.org,2002:binary',\n    /**\n     * Returns a Buffer in node and an Uint8Array in browsers\n     *\n     * To use the resulting buffer as an image, you'll want to do something like:\n     *\n     *   const blob = new Blob([buffer], { type: 'image/jpeg' })\n     *   document.querySelector('#photo').src = URL.createObjectURL(blob)\n     */\n    resolve(src, onError) {\n        if (typeof Buffer === 'function') {\n            return Buffer.from(src, 'base64');\n        }\n        else if (typeof atob === 'function') {\n            // On IE 11, atob() can't handle newlines\n            const str = atob(src.replace(/[\\n\\r]/g, ''));\n            const buffer = new Uint8Array(str.length);\n            for (let i = 0; i < str.length; ++i)\n                buffer[i] = str.charCodeAt(i);\n            return buffer;\n        }\n        else {\n            onError('This environment does not support reading binary tags; either Buffer or atob is required');\n            return src;\n        }\n    },\n    stringify({ comment, type, value }, ctx, onComment, onChompKeep) {\n        const buf = value; // checked earlier by binary.identify()\n        let str;\n        if (typeof Buffer === 'function') {\n            str =\n                buf instanceof Buffer\n                    ? buf.toString('base64')\n                    : Buffer.from(buf.buffer).toString('base64');\n        }\n        else if (typeof btoa === 'function') {\n            let s = '';\n            for (let i = 0; i < buf.length; ++i)\n                s += String.fromCharCode(buf[i]);\n            str = btoa(s);\n        }\n        else {\n            throw new Error('This environment does not support writing binary tags; either Buffer or btoa is required');\n        }\n        if (!type)\n            type = Scalar.Scalar.BLOCK_LITERAL;\n        if (type !== Scalar.Scalar.QUOTE_DOUBLE) {\n            const lineWidth = Math.max(ctx.options.lineWidth - ctx.indent.length, ctx.options.minContentWidth);\n            const n = Math.ceil(str.length / lineWidth);\n            const lines = new Array(n);\n            for (let i = 0, o = 0; i < n; ++i, o += lineWidth) {\n                lines[i] = str.substr(o, lineWidth);\n            }\n            str = lines.join(type === Scalar.Scalar.BLOCK_LITERAL ? '\\n' : ' ');\n        }\n        return stringifyString.stringifyString({ comment, type, value: str }, ctx, onComment, onChompKeep);\n    }\n};\n\nexports.binary = binary;\n","'use strict';\n\nvar Scalar = require('../../nodes/Scalar.js');\n\nfunction boolStringify({ value, source }, ctx) {\n    const boolObj = value ? trueTag : falseTag;\n    if (source && boolObj.test.test(source))\n        return source;\n    return value ? ctx.options.trueStr : ctx.options.falseStr;\n}\nconst trueTag = {\n    identify: value => value === true,\n    default: true,\n    tag: 'tag:yaml.org,2002:bool',\n    test: /^(?:Y|y|[Yy]es|YES|[Tt]rue|TRUE|[Oo]n|ON)$/,\n    resolve: () => new Scalar.Scalar(true),\n    stringify: boolStringify\n};\nconst falseTag = {\n    identify: value => value === false,\n    default: true,\n    tag: 'tag:yaml.org,2002:bool',\n    test: /^(?:N|n|[Nn]o|NO|[Ff]alse|FALSE|[Oo]ff|OFF)$/i,\n    resolve: () => new Scalar.Scalar(false),\n    stringify: boolStringify\n};\n\nexports.falseTag = falseTag;\nexports.trueTag = trueTag;\n","'use strict';\n\nvar Scalar = require('../../nodes/Scalar.js');\nvar stringifyNumber = require('../../stringify/stringifyNumber.js');\n\nconst floatNaN = {\n    identify: value => typeof value === 'number',\n    default: true,\n    tag: 'tag:yaml.org,2002:float',\n    test: /^[-+]?\\.(?:inf|Inf|INF|nan|NaN|NAN)$/,\n    resolve: (str) => str.slice(-3).toLowerCase() === 'nan'\n        ? NaN\n        : str[0] === '-'\n            ? Number.NEGATIVE_INFINITY\n            : Number.POSITIVE_INFINITY,\n    stringify: stringifyNumber.stringifyNumber\n};\nconst floatExp = {\n    identify: value => typeof value === 'number',\n    default: true,\n    tag: 'tag:yaml.org,2002:float',\n    format: 'EXP',\n    test: /^[-+]?(?:[0-9][0-9_]*)?(?:\\.[0-9_]*)?[eE][-+]?[0-9]+$/,\n    resolve: (str) => parseFloat(str.replace(/_/g, '')),\n    stringify(node) {\n        const num = Number(node.value);\n        return isFinite(num) ? num.toExponential() : stringifyNumber.stringifyNumber(node);\n    }\n};\nconst float = {\n    identify: value => typeof value === 'number',\n    default: true,\n    tag: 'tag:yaml.org,2002:float',\n    test: /^[-+]?(?:[0-9][0-9_]*)?\\.[0-9_]*$/,\n    resolve(str) {\n        const node = new Scalar.Scalar(parseFloat(str.replace(/_/g, '')));\n        const dot = str.indexOf('.');\n        if (dot !== -1) {\n            const f = str.substring(dot + 1).replace(/_/g, '');\n            if (f[f.length - 1] === '0')\n                node.minFractionDigits = f.length;\n        }\n        return node;\n    },\n    stringify: stringifyNumber.stringifyNumber\n};\n\nexports.float = float;\nexports.floatExp = floatExp;\nexports.floatNaN = floatNaN;\n","'use strict';\n\nvar stringifyNumber = require('../../stringify/stringifyNumber.js');\n\nconst intIdentify = (value) => typeof value === 'bigint' || Number.isInteger(value);\nfunction intResolve(str, offset, radix, { intAsBigInt }) {\n    const sign = str[0];\n    if (sign === '-' || sign === '+')\n        offset += 1;\n    str = str.substring(offset).replace(/_/g, '');\n    if (intAsBigInt) {\n        switch (radix) {\n            case 2:\n                str = `0b${str}`;\n                break;\n            case 8:\n                str = `0o${str}`;\n                break;\n            case 16:\n                str = `0x${str}`;\n                break;\n        }\n        const n = BigInt(str);\n        return sign === '-' ? BigInt(-1) * n : n;\n    }\n    const n = parseInt(str, radix);\n    return sign === '-' ? -1 * n : n;\n}\nfunction intStringify(node, radix, prefix) {\n    const { value } = node;\n    if (intIdentify(value)) {\n        const str = value.toString(radix);\n        return value < 0 ? '-' + prefix + str.substr(1) : prefix + str;\n    }\n    return stringifyNumber.stringifyNumber(node);\n}\nconst intBin = {\n    identify: intIdentify,\n    default: true,\n    tag: 'tag:yaml.org,2002:int',\n    format: 'BIN',\n    test: /^[-+]?0b[0-1_]+$/,\n    resolve: (str, _onError, opt) => intResolve(str, 2, 2, opt),\n    stringify: node => intStringify(node, 2, '0b')\n};\nconst intOct = {\n    identify: intIdentify,\n    default: true,\n    tag: 'tag:yaml.org,2002:int',\n    format: 'OCT',\n    test: /^[-+]?0[0-7_]+$/,\n    resolve: (str, _onError, opt) => intResolve(str, 1, 8, opt),\n    stringify: node => intStringify(node, 8, '0')\n};\nconst int = {\n    identify: intIdentify,\n    default: true,\n    tag: 'tag:yaml.org,2002:int',\n    test: /^[-+]?[0-9][0-9_]*$/,\n    resolve: (str, _onError, opt) => intResolve(str, 0, 10, opt),\n    stringify: stringifyNumber.stringifyNumber\n};\nconst intHex = {\n    identify: intIdentify,\n    default: true,\n    tag: 'tag:yaml.org,2002:int',\n    format: 'HEX',\n    test: /^[-+]?0x[0-9a-fA-F_]+$/,\n    resolve: (str, _onError, opt) => intResolve(str, 2, 16, opt),\n    stringify: node => intStringify(node, 16, '0x')\n};\n\nexports.int = int;\nexports.intBin = intBin;\nexports.intHex = intHex;\nexports.intOct = intOct;\n","'use strict';\n\nvar YAMLSeq = require('../../nodes/YAMLSeq.js');\nvar toJS = require('../../nodes/toJS.js');\nvar Node = require('../../nodes/Node.js');\nvar YAMLMap = require('../../nodes/YAMLMap.js');\nvar pairs = require('./pairs.js');\n\nclass YAMLOMap extends YAMLSeq.YAMLSeq {\n    constructor() {\n        super();\n        this.add = YAMLMap.YAMLMap.prototype.add.bind(this);\n        this.delete = YAMLMap.YAMLMap.prototype.delete.bind(this);\n        this.get = YAMLMap.YAMLMap.prototype.get.bind(this);\n        this.has = YAMLMap.YAMLMap.prototype.has.bind(this);\n        this.set = YAMLMap.YAMLMap.prototype.set.bind(this);\n        this.tag = YAMLOMap.tag;\n    }\n    /**\n     * If `ctx` is given, the return type is actually `Map<unknown, unknown>`,\n     * but TypeScript won't allow widening the signature of a child method.\n     */\n    toJSON(_, ctx) {\n        if (!ctx)\n            return super.toJSON(_);\n        const map = new Map();\n        if (ctx?.onCreate)\n            ctx.onCreate(map);\n        for (const pair of this.items) {\n            let key, value;\n            if (Node.isPair(pair)) {\n                key = toJS.toJS(pair.key, '', ctx);\n                value = toJS.toJS(pair.value, key, ctx);\n            }\n            else {\n                key = toJS.toJS(pair, '', ctx);\n            }\n            if (map.has(key))\n                throw new Error('Ordered maps must not include duplicate keys');\n            map.set(key, value);\n        }\n        return map;\n    }\n}\nYAMLOMap.tag = 'tag:yaml.org,2002:omap';\nconst omap = {\n    collection: 'seq',\n    identify: value => value instanceof Map,\n    nodeClass: YAMLOMap,\n    default: false,\n    tag: 'tag:yaml.org,2002:omap',\n    resolve(seq, onError) {\n        const pairs$1 = pairs.resolvePairs(seq, onError);\n        const seenKeys = [];\n        for (const { key } of pairs$1.items) {\n            if (Node.isScalar(key)) {\n                if (seenKeys.includes(key.value)) {\n                    onError(`Ordered maps must not include duplicate keys: ${key.value}`);\n                }\n                else {\n                    seenKeys.push(key.value);\n                }\n            }\n        }\n        return Object.assign(new YAMLOMap(), pairs$1);\n    },\n    createNode(schema, iterable, ctx) {\n        const pairs$1 = pairs.createPairs(schema, iterable, ctx);\n        const omap = new YAMLOMap();\n        omap.items = pairs$1.items;\n        return omap;\n    }\n};\n\nexports.YAMLOMap = YAMLOMap;\nexports.omap = omap;\n","'use strict';\n\nvar Node = require('../../nodes/Node.js');\nvar Pair = require('../../nodes/Pair.js');\nvar Scalar = require('../../nodes/Scalar.js');\nvar YAMLSeq = require('../../nodes/YAMLSeq.js');\n\nfunction resolvePairs(seq, onError) {\n    if (Node.isSeq(seq)) {\n        for (let i = 0; i < seq.items.length; ++i) {\n            let item = seq.items[i];\n            if (Node.isPair(item))\n                continue;\n            else if (Node.isMap(item)) {\n                if (item.items.length > 1)\n                    onError('Each pair must have its own sequence indicator');\n                const pair = item.items[0] || new Pair.Pair(new Scalar.Scalar(null));\n                if (item.commentBefore)\n                    pair.key.commentBefore = pair.key.commentBefore\n                        ? `${item.commentBefore}\\n${pair.key.commentBefore}`\n                        : item.commentBefore;\n                if (item.comment) {\n                    const cn = pair.value ?? pair.key;\n                    cn.comment = cn.comment\n                        ? `${item.comment}\\n${cn.comment}`\n                        : item.comment;\n                }\n                item = pair;\n            }\n            seq.items[i] = Node.isPair(item) ? item : new Pair.Pair(item);\n        }\n    }\n    else\n        onError('Expected a sequence for this tag');\n    return seq;\n}\nfunction createPairs(schema, iterable, ctx) {\n    const { replacer } = ctx;\n    const pairs = new YAMLSeq.YAMLSeq(schema);\n    pairs.tag = 'tag:yaml.org,2002:pairs';\n    let i = 0;\n    if (iterable && Symbol.iterator in Object(iterable))\n        for (let it of iterable) {\n            if (typeof replacer === 'function')\n                it = replacer.call(iterable, String(i++), it);\n            let key, value;\n            if (Array.isArray(it)) {\n                if (it.length === 2) {\n                    key = it[0];\n                    value = it[1];\n                }\n                else\n                    throw new TypeError(`Expected [key, value] tuple: ${it}`);\n            }\n            else if (it && it instanceof Object) {\n                const keys = Object.keys(it);\n                if (keys.length === 1) {\n                    key = keys[0];\n                    value = it[key];\n                }\n                else\n                    throw new TypeError(`Expected { key: value } tuple: ${it}`);\n            }\n            else {\n                key = it;\n            }\n            pairs.items.push(Pair.createPair(key, value, ctx));\n        }\n    return pairs;\n}\nconst pairs = {\n    collection: 'seq',\n    default: false,\n    tag: 'tag:yaml.org,2002:pairs',\n    resolve: resolvePairs,\n    createNode: createPairs\n};\n\nexports.createPairs = createPairs;\nexports.pairs = pairs;\nexports.resolvePairs = resolvePairs;\n","'use strict';\n\nvar map = require('../common/map.js');\nvar _null = require('../common/null.js');\nvar seq = require('../common/seq.js');\nvar string = require('../common/string.js');\nvar binary = require('./binary.js');\nvar bool = require('./bool.js');\nvar float = require('./float.js');\nvar int = require('./int.js');\nvar omap = require('./omap.js');\nvar pairs = require('./pairs.js');\nvar set = require('./set.js');\nvar timestamp = require('./timestamp.js');\n\nconst schema = [\n    map.map,\n    seq.seq,\n    string.string,\n    _null.nullTag,\n    bool.trueTag,\n    bool.falseTag,\n    int.intBin,\n    int.intOct,\n    int.int,\n    int.intHex,\n    float.floatNaN,\n    float.floatExp,\n    float.float,\n    binary.binary,\n    omap.omap,\n    pairs.pairs,\n    set.set,\n    timestamp.intTime,\n    timestamp.floatTime,\n    timestamp.timestamp\n];\n\nexports.schema = schema;\n","'use strict';\n\nvar Node = require('../../nodes/Node.js');\nvar Pair = require('../../nodes/Pair.js');\nvar YAMLMap = require('../../nodes/YAMLMap.js');\n\nclass YAMLSet extends YAMLMap.YAMLMap {\n    constructor(schema) {\n        super(schema);\n        this.tag = YAMLSet.tag;\n    }\n    add(key) {\n        let pair;\n        if (Node.isPair(key))\n            pair = key;\n        else if (key &&\n            typeof key === 'object' &&\n            'key' in key &&\n            'value' in key &&\n            key.value === null)\n            pair = new Pair.Pair(key.key, null);\n        else\n            pair = new Pair.Pair(key, null);\n        const prev = YAMLMap.findPair(this.items, pair.key);\n        if (!prev)\n            this.items.push(pair);\n    }\n    /**\n     * If `keepPair` is `true`, returns the Pair matching `key`.\n     * Otherwise, returns the value of that Pair's key.\n     */\n    get(key, keepPair) {\n        const pair = YAMLMap.findPair(this.items, key);\n        return !keepPair && Node.isPair(pair)\n            ? Node.isScalar(pair.key)\n                ? pair.key.value\n                : pair.key\n            : pair;\n    }\n    set(key, value) {\n        if (typeof value !== 'boolean')\n            throw new Error(`Expected boolean value for set(key, value) in a YAML set, not ${typeof value}`);\n        const prev = YAMLMap.findPair(this.items, key);\n        if (prev && !value) {\n            this.items.splice(this.items.indexOf(prev), 1);\n        }\n        else if (!prev && value) {\n            this.items.push(new Pair.Pair(key));\n        }\n    }\n    toJSON(_, ctx) {\n        return super.toJSON(_, ctx, Set);\n    }\n    toString(ctx, onComment, onChompKeep) {\n        if (!ctx)\n            return JSON.stringify(this);\n        if (this.hasAllNullValues(true))\n            return super.toString(Object.assign({}, ctx, { allNullValues: true }), onComment, onChompKeep);\n        else\n            throw new Error('Set items must all have null values');\n    }\n}\nYAMLSet.tag = 'tag:yaml.org,2002:set';\nconst set = {\n    collection: 'map',\n    identify: value => value instanceof Set,\n    nodeClass: YAMLSet,\n    default: false,\n    tag: 'tag:yaml.org,2002:set',\n    resolve(map, onError) {\n        if (Node.isMap(map)) {\n            if (map.hasAllNullValues(true))\n                return Object.assign(new YAMLSet(), map);\n            else\n                onError('Set items must all have null values');\n        }\n        else\n            onError('Expected a mapping for this tag');\n        return map;\n    },\n    createNode(schema, iterable, ctx) {\n        const { replacer } = ctx;\n        const set = new YAMLSet(schema);\n        if (iterable && Symbol.iterator in Object(iterable))\n            for (let value of iterable) {\n                if (typeof replacer === 'function')\n                    value = replacer.call(iterable, value, value);\n                set.items.push(Pair.createPair(value, null, ctx));\n            }\n        return set;\n    }\n};\n\nexports.YAMLSet = YAMLSet;\nexports.set = set;\n","'use strict';\n\nvar stringifyNumber = require('../../stringify/stringifyNumber.js');\n\n/** Internal types handle bigint as number, because TS can't figure it out. */\nfunction parseSexagesimal(str, asBigInt) {\n    const sign = str[0];\n    const parts = sign === '-' || sign === '+' ? str.substring(1) : str;\n    const num = (n) => asBigInt ? BigInt(n) : Number(n);\n    const res = parts\n        .replace(/_/g, '')\n        .split(':')\n        .reduce((res, p) => res * num(60) + num(p), num(0));\n    return (sign === '-' ? num(-1) * res : res);\n}\n/**\n * hhhh:mm:ss.sss\n *\n * Internal types handle bigint as number, because TS can't figure it out.\n */\nfunction stringifySexagesimal(node) {\n    let { value } = node;\n    let num = (n) => n;\n    if (typeof value === 'bigint')\n        num = n => BigInt(n);\n    else if (isNaN(value) || !isFinite(value))\n        return stringifyNumber.stringifyNumber(node);\n    let sign = '';\n    if (value < 0) {\n        sign = '-';\n        value *= num(-1);\n    }\n    const _60 = num(60);\n    const parts = [value % _60]; // seconds, including ms\n    if (value < 60) {\n        parts.unshift(0); // at least one : is required\n    }\n    else {\n        value = (value - parts[0]) / _60;\n        parts.unshift(value % _60); // minutes\n        if (value >= 60) {\n            value = (value - parts[0]) / _60;\n            parts.unshift(value); // hours\n        }\n    }\n    return (sign +\n        parts\n            .map(n => (n < 10 ? '0' + String(n) : String(n)))\n            .join(':')\n            .replace(/000000\\d*$/, '') // % 60 may introduce error\n    );\n}\nconst intTime = {\n    identify: value => typeof value === 'bigint' || Number.isInteger(value),\n    default: true,\n    tag: 'tag:yaml.org,2002:int',\n    format: 'TIME',\n    test: /^[-+]?[0-9][0-9_]*(?::[0-5]?[0-9])+$/,\n    resolve: (str, _onError, { intAsBigInt }) => parseSexagesimal(str, intAsBigInt),\n    stringify: stringifySexagesimal\n};\nconst floatTime = {\n    identify: value => typeof value === 'number',\n    default: true,\n    tag: 'tag:yaml.org,2002:float',\n    format: 'TIME',\n    test: /^[-+]?[0-9][0-9_]*(?::[0-5]?[0-9])+\\.[0-9_]*$/,\n    resolve: str => parseSexagesimal(str, false),\n    stringify: stringifySexagesimal\n};\nconst timestamp = {\n    identify: value => value instanceof Date,\n    default: true,\n    tag: 'tag:yaml.org,2002:timestamp',\n    // If the time zone is omitted, the timestamp is assumed to be specified in UTC. The time part\n    // may be omitted altogether, resulting in a date format. In such a case, the time part is\n    // assumed to be 00:00:00Z (start of day, UTC).\n    test: RegExp('^([0-9]{4})-([0-9]{1,2})-([0-9]{1,2})' + // YYYY-Mm-Dd\n        '(?:' + // time is optional\n        '(?:t|T|[ \\\\t]+)' + // t | T | whitespace\n        '([0-9]{1,2}):([0-9]{1,2}):([0-9]{1,2}(\\\\.[0-9]+)?)' + // Hh:Mm:Ss(.ss)?\n        '(?:[ \\\\t]*(Z|[-+][012]?[0-9](?::[0-9]{2})?))?' + // Z | +5 | -03:30\n        ')?$'),\n    resolve(str) {\n        const match = str.match(timestamp.test);\n        if (!match)\n            throw new Error('!!timestamp expects a date, starting with yyyy-mm-dd');\n        const [, year, month, day, hour, minute, second] = match.map(Number);\n        const millisec = match[7] ? Number((match[7] + '00').substr(1, 3)) : 0;\n        let date = Date.UTC(year, month - 1, day, hour || 0, minute || 0, second || 0, millisec);\n        const tz = match[8];\n        if (tz && tz !== 'Z') {\n            let d = parseSexagesimal(tz, false);\n            if (Math.abs(d) < 30)\n                d *= 60;\n            date -= 60000 * d;\n        }\n        return new Date(date);\n    },\n    stringify: ({ value }) => value.toISOString().replace(/((T00:00)?:00)?\\.000Z$/, '')\n};\n\nexports.floatTime = floatTime;\nexports.intTime = intTime;\nexports.timestamp = timestamp;\n","'use strict';\n\nconst FOLD_FLOW = 'flow';\nconst FOLD_BLOCK = 'block';\nconst FOLD_QUOTED = 'quoted';\n/**\n * Tries to keep input at up to `lineWidth` characters, splitting only on spaces\n * not followed by newlines or spaces unless `mode` is `'quoted'`. Lines are\n * terminated with `\\n` and started with `indent`.\n */\nfunction foldFlowLines(text, indent, mode = 'flow', { indentAtStart, lineWidth = 80, minContentWidth = 20, onFold, onOverflow } = {}) {\n    if (!lineWidth || lineWidth < 0)\n        return text;\n    const endStep = Math.max(1 + minContentWidth, 1 + lineWidth - indent.length);\n    if (text.length <= endStep)\n        return text;\n    const folds = [];\n    const escapedFolds = {};\n    let end = lineWidth - indent.length;\n    if (typeof indentAtStart === 'number') {\n        if (indentAtStart > lineWidth - Math.max(2, minContentWidth))\n            folds.push(0);\n        else\n            end = lineWidth - indentAtStart;\n    }\n    let split = undefined;\n    let prev = undefined;\n    let overflow = false;\n    let i = -1;\n    let escStart = -1;\n    let escEnd = -1;\n    if (mode === FOLD_BLOCK) {\n        i = consumeMoreIndentedLines(text, i);\n        if (i !== -1)\n            end = i + endStep;\n    }\n    for (let ch; (ch = text[(i += 1)]);) {\n        if (mode === FOLD_QUOTED && ch === '\\\\') {\n            escStart = i;\n            switch (text[i + 1]) {\n                case 'x':\n                    i += 3;\n                    break;\n                case 'u':\n                    i += 5;\n                    break;\n                case 'U':\n                    i += 9;\n                    break;\n                default:\n                    i += 1;\n            }\n            escEnd = i;\n        }\n        if (ch === '\\n') {\n            if (mode === FOLD_BLOCK)\n                i = consumeMoreIndentedLines(text, i);\n            end = i + endStep;\n            split = undefined;\n        }\n        else {\n            if (ch === ' ' &&\n                prev &&\n                prev !== ' ' &&\n                prev !== '\\n' &&\n                prev !== '\\t') {\n                // space surrounded by non-space can be replaced with newline + indent\n                const next = text[i + 1];\n                if (next && next !== ' ' && next !== '\\n' && next !== '\\t')\n                    split = i;\n            }\n            if (i >= end) {\n                if (split) {\n                    folds.push(split);\n                    end = split + endStep;\n                    split = undefined;\n                }\n                else if (mode === FOLD_QUOTED) {\n                    // white-space collected at end may stretch past lineWidth\n                    while (prev === ' ' || prev === '\\t') {\n                        prev = ch;\n                        ch = text[(i += 1)];\n                        overflow = true;\n                    }\n                    // Account for newline escape, but don't break preceding escape\n                    const j = i > escEnd + 1 ? i - 2 : escStart - 1;\n                    // Bail out if lineWidth & minContentWidth are shorter than an escape string\n                    if (escapedFolds[j])\n                        return text;\n                    folds.push(j);\n                    escapedFolds[j] = true;\n                    end = j + endStep;\n                    split = undefined;\n                }\n                else {\n                    overflow = true;\n                }\n            }\n        }\n        prev = ch;\n    }\n    if (overflow && onOverflow)\n        onOverflow();\n    if (folds.length === 0)\n        return text;\n    if (onFold)\n        onFold();\n    let res = text.slice(0, folds[0]);\n    for (let i = 0; i < folds.length; ++i) {\n        const fold = folds[i];\n        const end = folds[i + 1] || text.length;\n        if (fold === 0)\n            res = `\\n${indent}${text.slice(0, end)}`;\n        else {\n            if (mode === FOLD_QUOTED && escapedFolds[fold])\n                res += `${text[fold]}\\\\`;\n            res += `\\n${indent}${text.slice(fold + 1, end)}`;\n        }\n    }\n    return res;\n}\n/**\n * Presumes `i + 1` is at the start of a line\n * @returns index of last newline in more-indented block\n */\nfunction consumeMoreIndentedLines(text, i) {\n    let ch = text[i + 1];\n    while (ch === ' ' || ch === '\\t') {\n        do {\n            ch = text[(i += 1)];\n        } while (ch && ch !== '\\n');\n        ch = text[i + 1];\n    }\n    return i;\n}\n\nexports.FOLD_BLOCK = FOLD_BLOCK;\nexports.FOLD_FLOW = FOLD_FLOW;\nexports.FOLD_QUOTED = FOLD_QUOTED;\nexports.foldFlowLines = foldFlowLines;\n","'use strict';\n\nvar anchors = require('../doc/anchors.js');\nvar Node = require('../nodes/Node.js');\nvar stringifyComment = require('./stringifyComment.js');\nvar stringifyString = require('./stringifyString.js');\n\nfunction createStringifyContext(doc, options) {\n    const opt = Object.assign({\n        blockQuote: true,\n        commentString: stringifyComment.stringifyComment,\n        defaultKeyType: null,\n        defaultStringType: 'PLAIN',\n        directives: null,\n        doubleQuotedAsJSON: false,\n        doubleQuotedMinMultiLineLength: 40,\n        falseStr: 'false',\n        indentSeq: true,\n        lineWidth: 80,\n        minContentWidth: 20,\n        nullStr: 'null',\n        simpleKeys: false,\n        singleQuote: null,\n        trueStr: 'true',\n        verifyAliasOrder: true\n    }, doc.schema.toStringOptions, options);\n    let inFlow;\n    switch (opt.collectionStyle) {\n        case 'block':\n            inFlow = false;\n            break;\n        case 'flow':\n            inFlow = true;\n            break;\n        default:\n            inFlow = null;\n    }\n    return {\n        anchors: new Set(),\n        doc,\n        indent: '',\n        indentStep: typeof opt.indent === 'number' ? ' '.repeat(opt.indent) : '  ',\n        inFlow,\n        options: opt\n    };\n}\nfunction getTagObject(tags, item) {\n    if (item.tag) {\n        const match = tags.filter(t => t.tag === item.tag);\n        if (match.length > 0)\n            return match.find(t => t.format === item.format) ?? match[0];\n    }\n    let tagObj = undefined;\n    let obj;\n    if (Node.isScalar(item)) {\n        obj = item.value;\n        const match = tags.filter(t => t.identify?.(obj));\n        tagObj =\n            match.find(t => t.format === item.format) ?? match.find(t => !t.format);\n    }\n    else {\n        obj = item;\n        tagObj = tags.find(t => t.nodeClass && obj instanceof t.nodeClass);\n    }\n    if (!tagObj) {\n        const name = obj?.constructor?.name ?? typeof obj;\n        throw new Error(`Tag not resolved for ${name} value`);\n    }\n    return tagObj;\n}\n// needs to be called before value stringifier to allow for circular anchor refs\nfunction stringifyProps(node, tagObj, { anchors: anchors$1, doc }) {\n    if (!doc.directives)\n        return '';\n    const props = [];\n    const anchor = (Node.isScalar(node) || Node.isCollection(node)) && node.anchor;\n    if (anchor && anchors.anchorIsValid(anchor)) {\n        anchors$1.add(anchor);\n        props.push(`&${anchor}`);\n    }\n    const tag = node.tag ? node.tag : tagObj.default ? null : tagObj.tag;\n    if (tag)\n        props.push(doc.directives.tagString(tag));\n    return props.join(' ');\n}\nfunction stringify(item, ctx, onComment, onChompKeep) {\n    if (Node.isPair(item))\n        return item.toString(ctx, onComment, onChompKeep);\n    if (Node.isAlias(item)) {\n        if (ctx.doc.directives)\n            return item.toString(ctx);\n        if (ctx.resolvedAliases?.has(item)) {\n            throw new TypeError(`Cannot stringify circular structure without alias nodes`);\n        }\n        else {\n            if (ctx.resolvedAliases)\n                ctx.resolvedAliases.add(item);\n            else\n                ctx.resolvedAliases = new Set([item]);\n            item = item.resolve(ctx.doc);\n        }\n    }\n    let tagObj = undefined;\n    const node = Node.isNode(item)\n        ? item\n        : ctx.doc.createNode(item, { onTagObj: o => (tagObj = o) });\n    if (!tagObj)\n        tagObj = getTagObject(ctx.doc.schema.tags, node);\n    const props = stringifyProps(node, tagObj, ctx);\n    if (props.length > 0)\n        ctx.indentAtStart = (ctx.indentAtStart ?? 0) + props.length + 1;\n    const str = typeof tagObj.stringify === 'function'\n        ? tagObj.stringify(node, ctx, onComment, onChompKeep)\n        : Node.isScalar(node)\n            ? stringifyString.stringifyString(node, ctx, onComment, onChompKeep)\n            : node.toString(ctx, onComment, onChompKeep);\n    if (!props)\n        return str;\n    return Node.isScalar(node) || str[0] === '{' || str[0] === '['\n        ? `${props} ${str}`\n        : `${props}\\n${ctx.indent}${str}`;\n}\n\nexports.createStringifyContext = createStringifyContext;\nexports.stringify = stringify;\n","'use strict';\n\nvar Collection = require('../nodes/Collection.js');\nvar Node = require('../nodes/Node.js');\nvar stringify = require('./stringify.js');\nvar stringifyComment = require('./stringifyComment.js');\n\nfunction stringifyCollection(collection, ctx, options) {\n    const flow = ctx.inFlow ?? collection.flow;\n    const stringify = flow ? stringifyFlowCollection : stringifyBlockCollection;\n    return stringify(collection, ctx, options);\n}\nfunction stringifyBlockCollection({ comment, items }, ctx, { blockItemPrefix, flowChars, itemIndent, onChompKeep, onComment }) {\n    const { indent, options: { commentString } } = ctx;\n    const itemCtx = Object.assign({}, ctx, { indent: itemIndent, type: null });\n    let chompKeep = false; // flag for the preceding node's status\n    const lines = [];\n    for (let i = 0; i < items.length; ++i) {\n        const item = items[i];\n        let comment = null;\n        if (Node.isNode(item)) {\n            if (!chompKeep && item.spaceBefore)\n                lines.push('');\n            addCommentBefore(ctx, lines, item.commentBefore, chompKeep);\n            if (item.comment)\n                comment = item.comment;\n        }\n        else if (Node.isPair(item)) {\n            const ik = Node.isNode(item.key) ? item.key : null;\n            if (ik) {\n                if (!chompKeep && ik.spaceBefore)\n                    lines.push('');\n                addCommentBefore(ctx, lines, ik.commentBefore, chompKeep);\n            }\n        }\n        chompKeep = false;\n        let str = stringify.stringify(item, itemCtx, () => (comment = null), () => (chompKeep = true));\n        if (comment)\n            str += stringifyComment.lineComment(str, itemIndent, commentString(comment));\n        if (chompKeep && comment)\n            chompKeep = false;\n        lines.push(blockItemPrefix + str);\n    }\n    let str;\n    if (lines.length === 0) {\n        str = flowChars.start + flowChars.end;\n    }\n    else {\n        str = lines[0];\n        for (let i = 1; i < lines.length; ++i) {\n            const line = lines[i];\n            str += line ? `\\n${indent}${line}` : '\\n';\n        }\n    }\n    if (comment) {\n        str += '\\n' + stringifyComment.indentComment(commentString(comment), indent);\n        if (onComment)\n            onComment();\n    }\n    else if (chompKeep && onChompKeep)\n        onChompKeep();\n    return str;\n}\nfunction stringifyFlowCollection({ comment, items }, ctx, { flowChars, itemIndent, onComment }) {\n    const { indent, indentStep, options: { commentString } } = ctx;\n    itemIndent += indentStep;\n    const itemCtx = Object.assign({}, ctx, {\n        indent: itemIndent,\n        inFlow: true,\n        type: null\n    });\n    let reqNewline = false;\n    let linesAtValue = 0;\n    const lines = [];\n    for (let i = 0; i < items.length; ++i) {\n        const item = items[i];\n        let comment = null;\n        if (Node.isNode(item)) {\n            if (item.spaceBefore)\n                lines.push('');\n            addCommentBefore(ctx, lines, item.commentBefore, false);\n            if (item.comment)\n                comment = item.comment;\n        }\n        else if (Node.isPair(item)) {\n            const ik = Node.isNode(item.key) ? item.key : null;\n            if (ik) {\n                if (ik.spaceBefore)\n                    lines.push('');\n                addCommentBefore(ctx, lines, ik.commentBefore, false);\n                if (ik.comment)\n                    reqNewline = true;\n            }\n            const iv = Node.isNode(item.value) ? item.value : null;\n            if (iv) {\n                if (iv.comment)\n                    comment = iv.comment;\n                if (iv.commentBefore)\n                    reqNewline = true;\n            }\n            else if (item.value == null && ik && ik.comment) {\n                comment = ik.comment;\n            }\n        }\n        if (comment)\n            reqNewline = true;\n        let str = stringify.stringify(item, itemCtx, () => (comment = null));\n        if (i < items.length - 1)\n            str += ',';\n        if (comment)\n            str += stringifyComment.lineComment(str, itemIndent, commentString(comment));\n        if (!reqNewline && (lines.length > linesAtValue || str.includes('\\n')))\n            reqNewline = true;\n        lines.push(str);\n        linesAtValue = lines.length;\n    }\n    let str;\n    const { start, end } = flowChars;\n    if (lines.length === 0) {\n        str = start + end;\n    }\n    else {\n        if (!reqNewline) {\n            const len = lines.reduce((sum, line) => sum + line.length + 2, 2);\n            reqNewline = len > Collection.Collection.maxFlowStringSingleLineLength;\n        }\n        if (reqNewline) {\n            str = start;\n            for (const line of lines)\n                str += line ? `\\n${indentStep}${indent}${line}` : '\\n';\n            str += `\\n${indent}${end}`;\n        }\n        else {\n            str = `${start} ${lines.join(' ')} ${end}`;\n        }\n    }\n    if (comment) {\n        str += stringifyComment.lineComment(str, commentString(comment), indent);\n        if (onComment)\n            onComment();\n    }\n    return str;\n}\nfunction addCommentBefore({ indent, options: { commentString } }, lines, comment, chompKeep) {\n    if (comment && chompKeep)\n        comment = comment.replace(/^\\n+/, '');\n    if (comment) {\n        const ic = stringifyComment.indentComment(commentString(comment), indent);\n        lines.push(ic.trimStart()); // Avoid double indent on first line\n    }\n}\n\nexports.stringifyCollection = stringifyCollection;\n","'use strict';\n\n/**\n * Stringifies a comment.\n *\n * Empty comment lines are left empty,\n * lines consisting of a single space are replaced by `#`,\n * and all other lines are prefixed with a `#`.\n */\nconst stringifyComment = (str) => str.replace(/^(?!$)(?: $)?/gm, '#');\nfunction indentComment(comment, indent) {\n    if (/^\\n+$/.test(comment))\n        return comment.substring(1);\n    return indent ? comment.replace(/^(?! *$)/gm, indent) : comment;\n}\nconst lineComment = (str, indent, comment) => str.endsWith('\\n')\n    ? indentComment(comment, indent)\n    : comment.includes('\\n')\n        ? '\\n' + indentComment(comment, indent)\n        : (str.endsWith(' ') ? '' : ' ') + comment;\n\nexports.indentComment = indentComment;\nexports.lineComment = lineComment;\nexports.stringifyComment = stringifyComment;\n","'use strict';\n\nvar Node = require('../nodes/Node.js');\nvar stringify = require('./stringify.js');\nvar stringifyComment = require('./stringifyComment.js');\n\nfunction stringifyDocument(doc, options) {\n    const lines = [];\n    let hasDirectives = options.directives === true;\n    if (options.directives !== false && doc.directives) {\n        const dir = doc.directives.toString(doc);\n        if (dir) {\n            lines.push(dir);\n            hasDirectives = true;\n        }\n        else if (doc.directives.docStart)\n            hasDirectives = true;\n    }\n    if (hasDirectives)\n        lines.push('---');\n    const ctx = stringify.createStringifyContext(doc, options);\n    const { commentString } = ctx.options;\n    if (doc.commentBefore) {\n        if (lines.length !== 1)\n            lines.unshift('');\n        const cs = commentString(doc.commentBefore);\n        lines.unshift(stringifyComment.indentComment(cs, ''));\n    }\n    let chompKeep = false;\n    let contentComment = null;\n    if (doc.contents) {\n        if (Node.isNode(doc.contents)) {\n            if (doc.contents.spaceBefore && hasDirectives)\n                lines.push('');\n            if (doc.contents.commentBefore) {\n                const cs = commentString(doc.contents.commentBefore);\n                lines.push(stringifyComment.indentComment(cs, ''));\n            }\n            // top-level block scalars need to be indented if followed by a comment\n            ctx.forceBlockIndent = !!doc.comment;\n            contentComment = doc.contents.comment;\n        }\n        const onChompKeep = contentComment ? undefined : () => (chompKeep = true);\n        let body = stringify.stringify(doc.contents, ctx, () => (contentComment = null), onChompKeep);\n        if (contentComment)\n            body += stringifyComment.lineComment(body, '', commentString(contentComment));\n        if ((body[0] === '|' || body[0] === '>') &&\n            lines[lines.length - 1] === '---') {\n            // Top-level block scalars with a preceding doc marker ought to use the\n            // same line for their header.\n            lines[lines.length - 1] = `--- ${body}`;\n        }\n        else\n            lines.push(body);\n    }\n    else {\n        lines.push(stringify.stringify(doc.contents, ctx));\n    }\n    if (doc.directives?.docEnd) {\n        if (doc.comment) {\n            const cs = commentString(doc.comment);\n            if (cs.includes('\\n')) {\n                lines.push('...');\n                lines.push(stringifyComment.indentComment(cs, ''));\n            }\n            else {\n                lines.push(`... ${cs}`);\n            }\n        }\n        else {\n            lines.push('...');\n        }\n    }\n    else {\n        let dc = doc.comment;\n        if (dc && chompKeep)\n            dc = dc.replace(/^\\n+/, '');\n        if (dc) {\n            if ((!chompKeep || contentComment) && lines[lines.length - 1] !== '')\n                lines.push('');\n            lines.push(stringifyComment.indentComment(commentString(dc), ''));\n        }\n    }\n    return lines.join('\\n') + '\\n';\n}\n\nexports.stringifyDocument = stringifyDocument;\n","'use strict';\n\nfunction stringifyNumber({ format, minFractionDigits, tag, value }) {\n    if (typeof value === 'bigint')\n        return String(value);\n    const num = typeof value === 'number' ? value : Number(value);\n    if (!isFinite(num))\n        return isNaN(num) ? '.nan' : num < 0 ? '-.inf' : '.inf';\n    let n = JSON.stringify(value);\n    if (!format &&\n        minFractionDigits &&\n        (!tag || tag === 'tag:yaml.org,2002:float') &&\n        /^\\d/.test(n)) {\n        let i = n.indexOf('.');\n        if (i < 0) {\n            i = n.length;\n            n += '.';\n        }\n        let d = minFractionDigits - (n.length - i - 1);\n        while (d-- > 0)\n            n += '0';\n    }\n    return n;\n}\n\nexports.stringifyNumber = stringifyNumber;\n","'use strict';\n\nvar Node = require('../nodes/Node.js');\nvar Scalar = require('../nodes/Scalar.js');\nvar stringify = require('./stringify.js');\nvar stringifyComment = require('./stringifyComment.js');\n\nfunction stringifyPair({ key, value }, ctx, onComment, onChompKeep) {\n    const { allNullValues, doc, indent, indentStep, options: { commentString, indentSeq, simpleKeys } } = ctx;\n    let keyComment = (Node.isNode(key) && key.comment) || null;\n    if (simpleKeys) {\n        if (keyComment) {\n            throw new Error('With simple keys, key nodes cannot have comments');\n        }\n        if (Node.isCollection(key)) {\n            const msg = 'With simple keys, collection cannot be used as a key value';\n            throw new Error(msg);\n        }\n    }\n    let explicitKey = !simpleKeys &&\n        (!key ||\n            (keyComment && value == null && !ctx.inFlow) ||\n            Node.isCollection(key) ||\n            (Node.isScalar(key)\n                ? key.type === Scalar.Scalar.BLOCK_FOLDED || key.type === Scalar.Scalar.BLOCK_LITERAL\n                : typeof key === 'object'));\n    ctx = Object.assign({}, ctx, {\n        allNullValues: false,\n        implicitKey: !explicitKey && (simpleKeys || !allNullValues),\n        indent: indent + indentStep\n    });\n    let keyCommentDone = false;\n    let chompKeep = false;\n    let str = stringify.stringify(key, ctx, () => (keyCommentDone = true), () => (chompKeep = true));\n    if (!explicitKey && !ctx.inFlow && str.length > 1024) {\n        if (simpleKeys)\n            throw new Error('With simple keys, single line scalar must not span more than 1024 characters');\n        explicitKey = true;\n    }\n    if (ctx.inFlow) {\n        if (allNullValues || value == null) {\n            if (keyCommentDone && onComment)\n                onComment();\n            return str === '' ? '?' : explicitKey ? `? ${str}` : str;\n        }\n    }\n    else if ((allNullValues && !simpleKeys) || (value == null && explicitKey)) {\n        str = `? ${str}`;\n        if (keyComment && !keyCommentDone) {\n            str += stringifyComment.lineComment(str, ctx.indent, commentString(keyComment));\n        }\n        else if (chompKeep && onChompKeep)\n            onChompKeep();\n        return str;\n    }\n    if (keyCommentDone)\n        keyComment = null;\n    if (explicitKey) {\n        if (keyComment)\n            str += stringifyComment.lineComment(str, ctx.indent, commentString(keyComment));\n        str = `? ${str}\\n${indent}:`;\n    }\n    else {\n        str = `${str}:`;\n        if (keyComment)\n            str += stringifyComment.lineComment(str, ctx.indent, commentString(keyComment));\n    }\n    let vcb = '';\n    let valueComment = null;\n    if (Node.isNode(value)) {\n        if (value.spaceBefore)\n            vcb = '\\n';\n        if (value.commentBefore) {\n            const cs = commentString(value.commentBefore);\n            vcb += `\\n${stringifyComment.indentComment(cs, ctx.indent)}`;\n        }\n        valueComment = value.comment;\n    }\n    else if (value && typeof value === 'object') {\n        value = doc.createNode(value);\n    }\n    ctx.implicitKey = false;\n    if (!explicitKey && !keyComment && Node.isScalar(value))\n        ctx.indentAtStart = str.length + 1;\n    chompKeep = false;\n    if (!indentSeq &&\n        indentStep.length >= 2 &&\n        !ctx.inFlow &&\n        !explicitKey &&\n        Node.isSeq(value) &&\n        !value.flow &&\n        !value.tag &&\n        !value.anchor) {\n        // If indentSeq === false, consider '- ' as part of indentation where possible\n        ctx.indent = ctx.indent.substr(2);\n    }\n    let valueCommentDone = false;\n    const valueStr = stringify.stringify(value, ctx, () => (valueCommentDone = true), () => (chompKeep = true));\n    let ws = ' ';\n    if (vcb || keyComment) {\n        if (valueStr === '' && !ctx.inFlow)\n            ws = vcb === '\\n' ? '\\n\\n' : vcb;\n        else\n            ws = `${vcb}\\n${ctx.indent}`;\n    }\n    else if (!explicitKey && Node.isCollection(value)) {\n        const flow = valueStr[0] === '[' || valueStr[0] === '{';\n        if (!flow || valueStr.includes('\\n'))\n            ws = `\\n${ctx.indent}`;\n    }\n    else if (valueStr === '' || valueStr[0] === '\\n')\n        ws = '';\n    str += ws + valueStr;\n    if (ctx.inFlow) {\n        if (valueCommentDone && onComment)\n            onComment();\n    }\n    else if (valueComment && !valueCommentDone) {\n        str += stringifyComment.lineComment(str, ctx.indent, commentString(valueComment));\n    }\n    else if (chompKeep && onChompKeep) {\n        onChompKeep();\n    }\n    return str;\n}\n\nexports.stringifyPair = stringifyPair;\n","'use strict';\n\nvar Scalar = require('../nodes/Scalar.js');\nvar foldFlowLines = require('./foldFlowLines.js');\n\nconst getFoldOptions = (ctx) => ({\n    indentAtStart: ctx.indentAtStart,\n    lineWidth: ctx.options.lineWidth,\n    minContentWidth: ctx.options.minContentWidth\n});\n// Also checks for lines starting with %, as parsing the output as YAML 1.1 will\n// presume that's starting a new document.\nconst containsDocumentMarker = (str) => /^(%|---|\\.\\.\\.)/m.test(str);\nfunction lineLengthOverLimit(str, lineWidth, indentLength) {\n    if (!lineWidth || lineWidth < 0)\n        return false;\n    const limit = lineWidth - indentLength;\n    const strLen = str.length;\n    if (strLen <= limit)\n        return false;\n    for (let i = 0, start = 0; i < strLen; ++i) {\n        if (str[i] === '\\n') {\n            if (i - start > limit)\n                return true;\n            start = i + 1;\n            if (strLen - start <= limit)\n                return false;\n        }\n    }\n    return true;\n}\nfunction doubleQuotedString(value, ctx) {\n    const json = JSON.stringify(value);\n    if (ctx.options.doubleQuotedAsJSON)\n        return json;\n    const { implicitKey } = ctx;\n    const minMultiLineLength = ctx.options.doubleQuotedMinMultiLineLength;\n    const indent = ctx.indent || (containsDocumentMarker(value) ? '  ' : '');\n    let str = '';\n    let start = 0;\n    for (let i = 0, ch = json[i]; ch; ch = json[++i]) {\n        if (ch === ' ' && json[i + 1] === '\\\\' && json[i + 2] === 'n') {\n            // space before newline needs to be escaped to not be folded\n            str += json.slice(start, i) + '\\\\ ';\n            i += 1;\n            start = i;\n            ch = '\\\\';\n        }\n        if (ch === '\\\\')\n            switch (json[i + 1]) {\n                case 'u':\n                    {\n                        str += json.slice(start, i);\n                        const code = json.substr(i + 2, 4);\n                        switch (code) {\n                            case '0000':\n                                str += '\\\\0';\n                                break;\n                            case '0007':\n                                str += '\\\\a';\n                                break;\n                            case '000b':\n                                str += '\\\\v';\n                                break;\n                            case '001b':\n                                str += '\\\\e';\n                                break;\n                            case '0085':\n                                str += '\\\\N';\n                                break;\n                            case '00a0':\n                                str += '\\\\_';\n                                break;\n                            case '2028':\n                                str += '\\\\L';\n                                break;\n                            case '2029':\n                                str += '\\\\P';\n                                break;\n                            default:\n                                if (code.substr(0, 2) === '00')\n                                    str += '\\\\x' + code.substr(2);\n                                else\n                                    str += json.substr(i, 6);\n                        }\n                        i += 5;\n                        start = i + 1;\n                    }\n                    break;\n                case 'n':\n                    if (implicitKey ||\n                        json[i + 2] === '\"' ||\n                        json.length < minMultiLineLength) {\n                        i += 1;\n                    }\n                    else {\n                        // folding will eat first newline\n                        str += json.slice(start, i) + '\\n\\n';\n                        while (json[i + 2] === '\\\\' &&\n                            json[i + 3] === 'n' &&\n                            json[i + 4] !== '\"') {\n                            str += '\\n';\n                            i += 2;\n                        }\n                        str += indent;\n                        // space after newline needs to be escaped to not be folded\n                        if (json[i + 2] === ' ')\n                            str += '\\\\';\n                        i += 1;\n                        start = i + 1;\n                    }\n                    break;\n                default:\n                    i += 1;\n            }\n    }\n    str = start ? str + json.slice(start) : json;\n    return implicitKey\n        ? str\n        : foldFlowLines.foldFlowLines(str, indent, foldFlowLines.FOLD_QUOTED, getFoldOptions(ctx));\n}\nfunction singleQuotedString(value, ctx) {\n    if (ctx.options.singleQuote === false ||\n        (ctx.implicitKey && value.includes('\\n')) ||\n        /[ \\t]\\n|\\n[ \\t]/.test(value) // single quoted string can't have leading or trailing whitespace around newline\n    )\n        return doubleQuotedString(value, ctx);\n    const indent = ctx.indent || (containsDocumentMarker(value) ? '  ' : '');\n    const res = \"'\" + value.replace(/'/g, \"''\").replace(/\\n+/g, `$&\\n${indent}`) + \"'\";\n    return ctx.implicitKey\n        ? res\n        : foldFlowLines.foldFlowLines(res, indent, foldFlowLines.FOLD_FLOW, getFoldOptions(ctx));\n}\nfunction quotedString(value, ctx) {\n    const { singleQuote } = ctx.options;\n    let qs;\n    if (singleQuote === false)\n        qs = doubleQuotedString;\n    else {\n        const hasDouble = value.includes('\"');\n        const hasSingle = value.includes(\"'\");\n        if (hasDouble && !hasSingle)\n            qs = singleQuotedString;\n        else if (hasSingle && !hasDouble)\n            qs = doubleQuotedString;\n        else\n            qs = singleQuote ? singleQuotedString : doubleQuotedString;\n    }\n    return qs(value, ctx);\n}\nfunction blockString({ comment, type, value }, ctx, onComment, onChompKeep) {\n    const { blockQuote, commentString, lineWidth } = ctx.options;\n    // 1. Block can't end in whitespace unless the last line is non-empty.\n    // 2. Strings consisting of only whitespace are best rendered explicitly.\n    if (!blockQuote || /\\n[\\t ]+$/.test(value) || /^\\s*$/.test(value)) {\n        return quotedString(value, ctx);\n    }\n    const indent = ctx.indent ||\n        (ctx.forceBlockIndent || containsDocumentMarker(value) ? '  ' : '');\n    const literal = blockQuote === 'literal'\n        ? true\n        : blockQuote === 'folded' || type === Scalar.Scalar.BLOCK_FOLDED\n            ? false\n            : type === Scalar.Scalar.BLOCK_LITERAL\n                ? true\n                : !lineLengthOverLimit(value, lineWidth, indent.length);\n    if (!value)\n        return literal ? '|\\n' : '>\\n';\n    // determine chomping from whitespace at value end\n    let chomp;\n    let endStart;\n    for (endStart = value.length; endStart > 0; --endStart) {\n        const ch = value[endStart - 1];\n        if (ch !== '\\n' && ch !== '\\t' && ch !== ' ')\n            break;\n    }\n    let end = value.substring(endStart);\n    const endNlPos = end.indexOf('\\n');\n    if (endNlPos === -1) {\n        chomp = '-'; // strip\n    }\n    else if (value === end || endNlPos !== end.length - 1) {\n        chomp = '+'; // keep\n        if (onChompKeep)\n            onChompKeep();\n    }\n    else {\n        chomp = ''; // clip\n    }\n    if (end) {\n        value = value.slice(0, -end.length);\n        if (end[end.length - 1] === '\\n')\n            end = end.slice(0, -1);\n        end = end.replace(/\\n+(?!\\n|$)/g, `$&${indent}`);\n    }\n    // determine indent indicator from whitespace at value start\n    let startWithSpace = false;\n    let startEnd;\n    let startNlPos = -1;\n    for (startEnd = 0; startEnd < value.length; ++startEnd) {\n        const ch = value[startEnd];\n        if (ch === ' ')\n            startWithSpace = true;\n        else if (ch === '\\n')\n            startNlPos = startEnd;\n        else\n            break;\n    }\n    let start = value.substring(0, startNlPos < startEnd ? startNlPos + 1 : startEnd);\n    if (start) {\n        value = value.substring(start.length);\n        start = start.replace(/\\n+/g, `$&${indent}`);\n    }\n    const indentSize = indent ? '2' : '1'; // root is at -1\n    let header = (literal ? '|' : '>') + (startWithSpace ? indentSize : '') + chomp;\n    if (comment) {\n        header += ' ' + commentString(comment.replace(/ ?[\\r\\n]+/g, ' '));\n        if (onComment)\n            onComment();\n    }\n    if (literal) {\n        value = value.replace(/\\n+/g, `$&${indent}`);\n        return `${header}\\n${indent}${start}${value}${end}`;\n    }\n    value = value\n        .replace(/\\n+/g, '\\n$&')\n        .replace(/(?:^|\\n)([\\t ].*)(?:([\\n\\t ]*)\\n(?![\\n\\t ]))?/g, '$1$2') // more-indented lines aren't folded\n        //                ^ more-ind. ^ empty     ^ capture next empty lines only at end of indent\n        .replace(/\\n+/g, `$&${indent}`);\n    const body = foldFlowLines.foldFlowLines(`${start}${value}${end}`, indent, foldFlowLines.FOLD_BLOCK, getFoldOptions(ctx));\n    return `${header}\\n${indent}${body}`;\n}\nfunction plainString(item, ctx, onComment, onChompKeep) {\n    const { type, value } = item;\n    const { actualString, implicitKey, indent, inFlow } = ctx;\n    if ((implicitKey && /[\\n[\\]{},]/.test(value)) ||\n        (inFlow && /[[\\]{},]/.test(value))) {\n        return quotedString(value, ctx);\n    }\n    if (!value ||\n        /^[\\n\\t ,[\\]{}#&*!|>'\"%@`]|^[?-]$|^[?-][ \\t]|[\\n:][ \\t]|[ \\t]\\n|[\\n\\t ]#|[\\n\\t :]$/.test(value)) {\n        // not allowed:\n        // - empty string, '-' or '?'\n        // - start with an indicator character (except [?:-]) or /[?-] /\n        // - '\\n ', ': ' or ' \\n' anywhere\n        // - '#' not preceded by a non-space char\n        // - end with ' ' or ':'\n        return implicitKey || inFlow || !value.includes('\\n')\n            ? quotedString(value, ctx)\n            : blockString(item, ctx, onComment, onChompKeep);\n    }\n    if (!implicitKey &&\n        !inFlow &&\n        type !== Scalar.Scalar.PLAIN &&\n        value.includes('\\n')) {\n        // Where allowed & type not set explicitly, prefer block style for multiline strings\n        return blockString(item, ctx, onComment, onChompKeep);\n    }\n    if (indent === '' && containsDocumentMarker(value)) {\n        ctx.forceBlockIndent = true;\n        return blockString(item, ctx, onComment, onChompKeep);\n    }\n    const str = value.replace(/\\n+/g, `$&\\n${indent}`);\n    // Verify that output will be parsed as a string, as e.g. plain numbers and\n    // booleans get parsed with those types in v1.2 (e.g. '42', 'true' & '0.9e-3'),\n    // and others in v1.1.\n    if (actualString) {\n        const test = (tag) => tag.default && tag.tag !== 'tag:yaml.org,2002:str' && tag.test?.test(str);\n        const { compat, tags } = ctx.doc.schema;\n        if (tags.some(test) || compat?.some(test))\n            return quotedString(value, ctx);\n    }\n    return implicitKey\n        ? str\n        : foldFlowLines.foldFlowLines(str, indent, foldFlowLines.FOLD_FLOW, getFoldOptions(ctx));\n}\nfunction stringifyString(item, ctx, onComment, onChompKeep) {\n    const { implicitKey, inFlow } = ctx;\n    const ss = typeof item.value === 'string'\n        ? item\n        : Object.assign({}, item, { value: String(item.value) });\n    let { type } = item;\n    if (type !== Scalar.Scalar.QUOTE_DOUBLE) {\n        // force double quotes on control characters & unpaired surrogates\n        if (/[\\x00-\\x08\\x0b-\\x1f\\x7f-\\x9f\\u{D800}-\\u{DFFF}]/u.test(ss.value))\n            type = Scalar.Scalar.QUOTE_DOUBLE;\n    }\n    const _stringify = (_type) => {\n        switch (_type) {\n            case Scalar.Scalar.BLOCK_FOLDED:\n            case Scalar.Scalar.BLOCK_LITERAL:\n                return implicitKey || inFlow\n                    ? quotedString(ss.value, ctx) // blocks are not valid inside flow containers\n                    : blockString(ss, ctx, onComment, onChompKeep);\n            case Scalar.Scalar.QUOTE_DOUBLE:\n                return doubleQuotedString(ss.value, ctx);\n            case Scalar.Scalar.QUOTE_SINGLE:\n                return singleQuotedString(ss.value, ctx);\n            case Scalar.Scalar.PLAIN:\n                return plainString(ss, ctx, onComment, onChompKeep);\n            default:\n                return null;\n        }\n    };\n    let res = _stringify(type);\n    if (res === null) {\n        const { defaultKeyType, defaultStringType } = ctx.options;\n        const t = (implicitKey && defaultKeyType) || defaultStringType;\n        res = _stringify(t);\n        if (res === null)\n            throw new Error(`Unsupported default string type ${t}`);\n    }\n    return res;\n}\n\nexports.stringifyString = stringifyString;\n","'use strict';\n\nvar Node = require('./nodes/Node.js');\n\nconst BREAK = Symbol('break visit');\nconst SKIP = Symbol('skip children');\nconst REMOVE = Symbol('remove node');\n/**\n * Apply a visitor to an AST node or document.\n *\n * Walks through the tree (depth-first) starting from `node`, calling a\n * `visitor` function with three arguments:\n *   - `key`: For sequence values and map `Pair`, the node's index in the\n *     collection. Within a `Pair`, `'key'` or `'value'`, correspondingly.\n *     `null` for the root node.\n *   - `node`: The current node.\n *   - `path`: The ancestry of the current node.\n *\n * The return value of the visitor may be used to control the traversal:\n *   - `undefined` (default): Do nothing and continue\n *   - `visit.SKIP`: Do not visit the children of this node, continue with next\n *     sibling\n *   - `visit.BREAK`: Terminate traversal completely\n *   - `visit.REMOVE`: Remove the current node, then continue with the next one\n *   - `Node`: Replace the current node, then continue by visiting it\n *   - `number`: While iterating the items of a sequence or map, set the index\n *     of the next step. This is useful especially if the index of the current\n *     node has changed.\n *\n * If `visitor` is a single function, it will be called with all values\n * encountered in the tree, including e.g. `null` values. Alternatively,\n * separate visitor functions may be defined for each `Map`, `Pair`, `Seq`,\n * `Alias` and `Scalar` node. To define the same visitor function for more than\n * one node type, use the `Collection` (map and seq), `Value` (map, seq & scalar)\n * and `Node` (alias, map, seq & scalar) targets. Of all these, only the most\n * specific defined one will be used for each node.\n */\nfunction visit(node, visitor) {\n    const visitor_ = initVisitor(visitor);\n    if (Node.isDocument(node)) {\n        const cd = visit_(null, node.contents, visitor_, Object.freeze([node]));\n        if (cd === REMOVE)\n            node.contents = null;\n    }\n    else\n        visit_(null, node, visitor_, Object.freeze([]));\n}\n// Without the `as symbol` casts, TS declares these in the `visit`\n// namespace using `var`, but then complains about that because\n// `unique symbol` must be `const`.\n/** Terminate visit traversal completely */\nvisit.BREAK = BREAK;\n/** Do not visit the children of the current node */\nvisit.SKIP = SKIP;\n/** Remove the current node */\nvisit.REMOVE = REMOVE;\nfunction visit_(key, node, visitor, path) {\n    const ctrl = callVisitor(key, node, visitor, path);\n    if (Node.isNode(ctrl) || Node.isPair(ctrl)) {\n        replaceNode(key, path, ctrl);\n        return visit_(key, ctrl, visitor, path);\n    }\n    if (typeof ctrl !== 'symbol') {\n        if (Node.isCollection(node)) {\n            path = Object.freeze(path.concat(node));\n            for (let i = 0; i < node.items.length; ++i) {\n                const ci = visit_(i, node.items[i], visitor, path);\n                if (typeof ci === 'number')\n                    i = ci - 1;\n                else if (ci === BREAK)\n                    return BREAK;\n                else if (ci === REMOVE) {\n                    node.items.splice(i, 1);\n                    i -= 1;\n                }\n            }\n        }\n        else if (Node.isPair(node)) {\n            path = Object.freeze(path.concat(node));\n            const ck = visit_('key', node.key, visitor, path);\n            if (ck === BREAK)\n                return BREAK;\n            else if (ck === REMOVE)\n                node.key = null;\n            const cv = visit_('value', node.value, visitor, path);\n            if (cv === BREAK)\n                return BREAK;\n            else if (cv === REMOVE)\n                node.value = null;\n        }\n    }\n    return ctrl;\n}\n/**\n * Apply an async visitor to an AST node or document.\n *\n * Walks through the tree (depth-first) starting from `node`, calling a\n * `visitor` function with three arguments:\n *   - `key`: For sequence values and map `Pair`, the node's index in the\n *     collection. Within a `Pair`, `'key'` or `'value'`, correspondingly.\n *     `null` for the root node.\n *   - `node`: The current node.\n *   - `path`: The ancestry of the current node.\n *\n * The return value of the visitor may be used to control the traversal:\n *   - `Promise`: Must resolve to one of the following values\n *   - `undefined` (default): Do nothing and continue\n *   - `visit.SKIP`: Do not visit the children of this node, continue with next\n *     sibling\n *   - `visit.BREAK`: Terminate traversal completely\n *   - `visit.REMOVE`: Remove the current node, then continue with the next one\n *   - `Node`: Replace the current node, then continue by visiting it\n *   - `number`: While iterating the items of a sequence or map, set the index\n *     of the next step. This is useful especially if the index of the current\n *     node has changed.\n *\n * If `visitor` is a single function, it will be called with all values\n * encountered in the tree, including e.g. `null` values. Alternatively,\n * separate visitor functions may be defined for each `Map`, `Pair`, `Seq`,\n * `Alias` and `Scalar` node. To define the same visitor function for more than\n * one node type, use the `Collection` (map and seq), `Value` (map, seq & scalar)\n * and `Node` (alias, map, seq & scalar) targets. Of all these, only the most\n * specific defined one will be used for each node.\n */\nasync function visitAsync(node, visitor) {\n    const visitor_ = initVisitor(visitor);\n    if (Node.isDocument(node)) {\n        const cd = await visitAsync_(null, node.contents, visitor_, Object.freeze([node]));\n        if (cd === REMOVE)\n            node.contents = null;\n    }\n    else\n        await visitAsync_(null, node, visitor_, Object.freeze([]));\n}\n// Without the `as symbol` casts, TS declares these in the `visit`\n// namespace using `var`, but then complains about that because\n// `unique symbol` must be `const`.\n/** Terminate visit traversal completely */\nvisitAsync.BREAK = BREAK;\n/** Do not visit the children of the current node */\nvisitAsync.SKIP = SKIP;\n/** Remove the current node */\nvisitAsync.REMOVE = REMOVE;\nasync function visitAsync_(key, node, visitor, path) {\n    const ctrl = await callVisitor(key, node, visitor, path);\n    if (Node.isNode(ctrl) || Node.isPair(ctrl)) {\n        replaceNode(key, path, ctrl);\n        return visitAsync_(key, ctrl, visitor, path);\n    }\n    if (typeof ctrl !== 'symbol') {\n        if (Node.isCollection(node)) {\n            path = Object.freeze(path.concat(node));\n            for (let i = 0; i < node.items.length; ++i) {\n                const ci = await visitAsync_(i, node.items[i], visitor, path);\n                if (typeof ci === 'number')\n                    i = ci - 1;\n                else if (ci === BREAK)\n                    return BREAK;\n                else if (ci === REMOVE) {\n                    node.items.splice(i, 1);\n                    i -= 1;\n                }\n            }\n        }\n        else if (Node.isPair(node)) {\n            path = Object.freeze(path.concat(node));\n            const ck = await visitAsync_('key', node.key, visitor, path);\n            if (ck === BREAK)\n                return BREAK;\n            else if (ck === REMOVE)\n                node.key = null;\n            const cv = await visitAsync_('value', node.value, visitor, path);\n            if (cv === BREAK)\n                return BREAK;\n            else if (cv === REMOVE)\n                node.value = null;\n        }\n    }\n    return ctrl;\n}\nfunction initVisitor(visitor) {\n    if (typeof visitor === 'object' &&\n        (visitor.Collection || visitor.Node || visitor.Value)) {\n        return Object.assign({\n            Alias: visitor.Node,\n            Map: visitor.Node,\n            Scalar: visitor.Node,\n            Seq: visitor.Node\n        }, visitor.Value && {\n            Map: visitor.Value,\n            Scalar: visitor.Value,\n            Seq: visitor.Value\n        }, visitor.Collection && {\n            Map: visitor.Collection,\n            Seq: visitor.Collection\n        }, visitor);\n    }\n    return visitor;\n}\nfunction callVisitor(key, node, visitor, path) {\n    if (typeof visitor === 'function')\n        return visitor(key, node, path);\n    if (Node.isMap(node))\n        return visitor.Map?.(key, node, path);\n    if (Node.isSeq(node))\n        return visitor.Seq?.(key, node, path);\n    if (Node.isPair(node))\n        return visitor.Pair?.(key, node, path);\n    if (Node.isScalar(node))\n        return visitor.Scalar?.(key, node, path);\n    if (Node.isAlias(node))\n        return visitor.Alias?.(key, node, path);\n    return undefined;\n}\nfunction replaceNode(key, path, node) {\n    const parent = path[path.length - 1];\n    if (Node.isCollection(parent)) {\n        parent.items[key] = node;\n    }\n    else if (Node.isPair(parent)) {\n        if (key === 'key')\n            parent.key = node;\n        else\n            parent.value = node;\n    }\n    else if (Node.isDocument(parent)) {\n        parent.contents = node;\n    }\n    else {\n        const pt = Node.isAlias(parent) ? 'alias' : 'scalar';\n        throw new Error(`Cannot replace node with ${pt} parent`);\n    }\n}\n\nexports.visit = visit;\nexports.visitAsync = visitAsync;\n","// The module cache\nvar __webpack_module_cache__ = {};\n\n// The require function\nfunction __webpack_require__(moduleId) {\n\t// Check if module is in cache\n\tvar cachedModule = __webpack_module_cache__[moduleId];\n\tif (cachedModule !== undefined) {\n\t\treturn cachedModule.exports;\n\t}\n\t// Create a new module (and put it into the cache)\n\tvar module = __webpack_module_cache__[moduleId] = {\n\t\tid: moduleId,\n\t\tloaded: false,\n\t\texports: {}\n\t};\n\n\t// Execute the module function\n\tvar threw = true;\n\ttry {\n\t\t__webpack_modules__[moduleId].call(module.exports, module, module.exports, __webpack_require__);\n\t\tthrew = false;\n\t} finally {\n\t\tif(threw) delete __webpack_module_cache__[moduleId];\n\t}\n\n\t// Flag the module as loaded\n\tmodule.loaded = true;\n\n\t// Return the exports of the module\n\treturn module.exports;\n}\n\n","__webpack_require__.nmd = (module) => {\n\tmodule.paths = [];\n\tif (!module.children) module.children = [];\n\treturn module;\n};","\nif (typeof __webpack_require__ !== 'undefined') __webpack_require__.ab = __dirname + \"/\";"],"names":[],"sourceRoot":""}
\ No newline at end of file