chore: migrate rollup-plugin-multi-entry (#88)

* chore: migrate rollup-plugin-multi-entry

* chore: address reviews

.editorconfig

@@ -12,7 +12,6 @@ trim_trailing_whitespace = true
 [*.md]
 insert_final_newline = true
 trim_trailing_whitespace = false
-max_line_length = 500
 
 [*.yml]
 max_line_length = 500

README.md

@@ -26,7 +26,8 @@ This repository houses plugins that Rollup considers critical to every day use o
 | [image](packages/image)               | Import JPG, PNG, GIF, SVG, and WebP files                                                 |
 | [inject](packages/inject)             | Scan modules for global variables and injects `import` statements where necessary         |
 | [json](packages/json)                 | Convert .json files to ES6 modules                                                        |
-| [legacy](packages/legacy)             | Add `export` declarations to legacy non-module scripts.                                   |
+| [legacy](packages/legacy)             | Add `export` declarations to legacy non-module scripts                                    |
+| [multi-entry](packages/multi-entry)   | Use multiple entry points for a bundle                                                    |
 | [node-resolve](packages/node-resolve) | Locate and bundle third-party dependencies in node_modules                                |
 | [replace](packages/replace)           | Replace strings in files while bundling                                                   |
 | [strip](packages/strip)               | Remove debugger statements and functions like assert.equal and console.log from your code |

packages/multi-entry/README.md

@@ -0,0 +1,125 @@
+[npm]: https://img.shields.io/npm/v/@rollup/plugin-multi-entry
+[npm-url]: https://www.npmjs.com/package/@rollup/plugin-multi-entry
+[size]: https://packagephobia.now.sh/badge?p=@rollup/plugin-multi-entry
+[size-url]: https://packagephobia.now.sh/result?p=@rollup/plugin-multi-entry
+
+[![npm][npm]][npm-url]
+[![size][size]][size-url]
+[![libera manifesto](https://img.shields.io/badge/libera-manifesto-lightgrey.svg)](https://liberamanifesto.com)
+
+# @rollup/plugin-multi-entry
+
+🍣 A Rollup plugin which allows use of multiple entry points for a bundle.
+
+As an added bonus, the _named exports_ from all entry points will be combined. This is particularly useful for tests, but can also be used to package a library.
+
+_Note: `default` exports cannot be combined and exported by this plugin. Only named exports will be exported._
+
+## Requirements
+
+This plugin requires an [LTS](https://github.com/nodejs/Release) Node version (v8.0.0+) and Rollup v1.20.0+.
+
+## Install
+
+Using npm:
+
+```console
+npm install @rollup/plugin-multi-entry --save-dev
+```
+
+## Usage
+
+Suppose that we have three separate source files, each with their own export(s):
+
+```js
+// batman.js
+export const belt = 'utility';
+```
+
+```js
+// robin.js
+export const tights = 'tight';
+```
+
+```js
+// joker.js
+export const color = 'purple';
+```
+
+Then, create a `rollup.config.js` [configuration file](https://www.rollupjs.org/guide/en/#configuration-files) and import the plugin:
+
+```js
+import multi from '@rollup/plugin-multi-entry';
+
+export default {
+  input: ['batman.js', 'robin.js', 'joker.js'],
+  output: {
+    dir: 'output'
+  },
+  plugins: [multi()]
+};
+```
+
+Then call `rollup` either via the [CLI](https://www.rollupjs.org/guide/en/#command-line-reference) or the [API](https://www.rollupjs.org/guide/en/#javascript-api).
+
+Using all three files above as entry points will yield a bundle with exports for `belt`, `tights`, and `color`.
+
+## Options
+
+### `exports`
+
+Type: `Boolean`<br>
+Default: `true`
+
+If `true`, instructs the plugin to export named exports to the bundle from all entries. If `false`, the plugin will not export any entry exports to the bundle. This can be useful when wanting to combine code from multiple entry files, but not necessarily to export each entry file's exports.
+
+## Supported Input Types
+
+This plugin extends Rollup's `input` option to support multiple new value types, in addition to a `String` specifying a path to a file.
+
+### Glob
+
+When using `plugin-multi-entry`, input values passed as a normal `String` are [glob aware](<https://en.wikipedia.org/wiki/Glob_(programming)>). Meaning you can utilize glob wildcards and other glob patterns to specify files as being input files.
+
+```js
+export default {
+  input: 'batcave/friends/**/*.js',
+  plugins: [multi()]
+  // ...
+};
+```
+
+### Array
+
+An `Array` of `String` can be passed as the input. Values are glob-aware and can specify paths or globbed paths.
+
+```js
+export default {
+  input: ['party/supplies.js', 'batcave/friends/**/*.js'],
+  plugins: [multi()]
+  // ...
+};
+```
+
+### `include` and `exclude`
+
+For fine-grain control, an `Object` may be passed containing `include` and `exclude` properties. These properties specify and `Array` of `String` representing paths (which are also glob-aware) which should be included as entry files, as well as files that should be excluded from any entries that may have been found with `include`, respectively.
+
+```js
+export default {
+  input: {
+    // invite everyone!
+    include: ['food.js', 'drinks.js', 'batcave/friends/**/*.js'],
+    // except for the joker
+    exclude: ['**/joker.js']
+  },
+  plugins: [multi()]
+  // ...
+};
+```
+
+## Meta
+
+[CONTRIBUTING](/.github/CONTRIBUTING.md)
+
+[LICENSE (MIT)](/LICENSE)

packages/multi-entry/package.json

@@ -0,0 +1,64 @@
+{
+  "name": "@rollup/plugin-multi-entry",
+  "version": "3.0.0",
+  "publishConfig": {
+    "access": "public"
+  },
+  "description": "Use multiple entry points for a bundle",
+  "license": "MIT",
+  "repository": "rollup/plugins",
+  "author": "rollup",
+  "homepage": "https://github.com/rollup/plugins/packages/multi-entry/#readme",
+  "bugs": "https://github.com/rollup/plugins/issues",
+  "main": "dist/index.js",
+  "scripts": {
+    "build": "rollup -c",
+    "ci:coverage": "nyc pnpm run test && nyc report --reporter=text-lcov > coverage.lcov",
+    "ci:lint": "pnpm run build && pnpm run lint",
+    "ci:lint:commits": "commitlint --from=${CIRCLE_BRANCH} --to=${CIRCLE_SHA1}",
+    "ci:test": "pnpm run test -- --verbose",
+    "lint": "pnpm run lint:js && pnpm run lint:docs && pnpm run lint:package",
+    "lint:docs": "prettier --single-quote --write README.md",
+    "lint:js": "eslint --fix --cache src test",
+    "lint:package": "prettier --write package.json --plugin=prettier-plugin-package",
+    "prebuild": "del-cli dist",
+    "prepare": "pnpm run build",
+    "prepublishOnly": "pnpm run lint",
+    "pretest": "pnpm run build",
+    "test": "ava"
+  },
+  "files": [
+    "dist",
+    "README.md",
+    "LICENSE"
+  ],
+  "keywords": [
+    "rollup",
+    "plugin",
+    "multi",
+    "multiple",
+    "entry",
+    "entries"
+  ],
+  "peerDependencies": {
+    "rollup": "^1.20.0"
+  },
+  "dependencies": {
+    "matched": "^1.0.2"
+  },
+  "devDependencies": {
+    "@babel/core": "^7.2.0",
+    "@babel/preset-env": "^7.2.0",
+    "rollup": "^1.20.1",
+    "rollup-plugin-babel": "^4.0.3"
+  },
+  "ava": {
+    "files": [
+      "!**/fixtures/**",
+      "!**/helpers/**",
+      "!**/recipes/**",
+      "!**/types.ts"
+    ]
+  },
+  "module": "dist/index.es.js"
+}

packages/multi-entry/rollup.config.js

@@ -0,0 +1,18 @@
+import babel from 'rollup-plugin-babel';
+
+const pkg = require('./package.json');
+
+export default {
+  input: 'src/index.js',
+  plugins: [
+    babel({
+      presets: [['@babel/env', { targets: { node: '8' }, modules: false }]],
+      babelrc: false
+    })
+  ],
+  external: Object.keys(pkg.dependencies),
+  output: [
+    { format: 'cjs', file: pkg.main },
+    { format: 'es', file: pkg.module }
+  ]
+};

packages/multi-entry/src/index.js

@@ -0,0 +1,56 @@
+/* eslint-disable consistent-return, no-param-reassign */
+
+import { promise as matched } from 'matched';
+
+const entry = '\0rollup:plugin-multi-entry:entry-point';
+
+export default function multiEntry(conf) {
+  let include = [];
+  let exclude = [];
+  let exporter = (path) => `export * from ${JSON.stringify(path)};`;
+
+  function configure(config) {
+    if (typeof config === 'string') {
+      include = [config];
+    } else if (Array.isArray(config)) {
+      include = config;
+    } else {
+      include = config.include || [];
+      exclude = config.exclude || [];
+      if (config.exports === false) {
+        exporter = (path) => `import ${JSON.stringify(path)};`;
+      }
+    }
+  }
+
+  if (conf) {
+    configure(conf);
+  }
+
+  return {
+    options(options) {
+      if (options.input && options.input !== entry) {
+        configure(options.input);
+      }
+      options.input = entry;
+    },
+
+    resolveId(id) {
+      if (id === entry) {
+        return entry;
+      }
+    },
+
+    load(id) {
+      if (id === entry) {
+        if (!include.length) {
+          return Promise.resolve('');
+        }
+        const patterns = include.concat(exclude.map((pattern) => `!${pattern}`));
+        return matched(patterns, { realpath: true }).then((paths) =>
+          paths.map(exporter).join('\n')
+        );
+      }
+    }
+  };
+}

packages/multi-entry/test/fixtures/.eslintrc

@@ -0,0 +1,6 @@
+{
+  "rules": {
+    "import/prefer-default-export": "off",
+    "no-console": "off"
+  }
+}

packages/multi-entry/test/fixtures/0.js

@@ -0,0 +1 @@
+export const zero = 0;

packages/multi-entry/test/fixtures/1.js

@@ -0,0 +1 @@
+export const one = 1;

packages/multi-entry/test/fixtures/2.js

@@ -0,0 +1 @@
+console.log('Hello, 2');

packages/multi-entry/test/test.js

@@ -0,0 +1,74 @@
+/* eslint-disable no-bitwise */
+
+import test from 'ava';
+import { rollup } from 'rollup';
+
+import { getCode } from '../../../util/test';
+
+import multiEntry from '../';
+
+test('takes a single file as input', async (t) => {
+  const bundle = await rollup({ input: 'test/fixtures/0.js', plugins: [multiEntry()] });
+  const code = await getCode(bundle);
+  t.truthy(code.includes('exports.zero = zero;'));
+});
+
+test('takes an array of files as input', async (t) => {
+  const bundle = await rollup({
+    input: ['test/fixtures/0.js', 'test/fixtures/1.js'],
+    plugins: [multiEntry()]
+  });
+  const code = await getCode(bundle);
+  t.truthy(code.includes('exports.zero = zero;'));
+  t.truthy(code.includes('exports.one = one;'));
+});
+
+test('allows an empty array as input', async (t) => {
+  const bundle = await rollup({ input: [], plugins: [multiEntry()] });
+  const code = await getCode(bundle);
+  t.falsy(code.includes('exports'));
+});
+
+test('takes a glob as input', async (t) => {
+  const bundle = await rollup({ input: 'test/fixtures/{0,1}.js', plugins: [multiEntry()] });
+  const code = await getCode(bundle);
+  t.truthy(code.includes('exports.zero = zero;'));
+  t.truthy(code.includes('exports.one = one;'));
+});
+
+test('takes an array of globs as input', async (t) => {
+  const bundle = await rollup({
+    input: ['test/fixtures/{0,}.js', 'test/fixtures/{1,}.js'],
+    plugins: [multiEntry()]
+  });
+  const code = await getCode(bundle);
+  t.truthy(code.includes('exports.zero = zero;'));
+  t.truthy(code.includes('exports.one = one;'));
+});
+
+test('takes an {include,exclude} object as input', async (t) => {
+  const bundle = await rollup({
+    input: {
+      include: ['test/fixtures/*.js'],
+      exclude: ['test/fixtures/1.js']
+    },
+    plugins: [multiEntry()]
+  });
+  const code = await getCode(bundle);
+  t.truthy(code.includes('exports.zero = zero;'));
+  t.falsy(code.includes('exports.one = one;'));
+});
+
+test('allows to prevent exporting', async (t) => {
+  const bundle = await rollup({
+    input: {
+      include: ['test/fixtures/*.js'],
+      exports: false
+    },
+    plugins: [multiEntry()]
+  });
+  const code = await getCode(bundle);
+  t.truthy(code.includes(`console.log('Hello, 2');`));
+  t.falsy(code.includes('zero'));
+  t.falsy(code.includes('one'));
+});