Add scaffolder for JS (#1901)

languages/javascript/scripts/scaffold/scaffold.sh

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+#!/usr/bin/env bash
+
+echo "Scaffolding '$1'"
+
+cp -r ./template ../../exercises/concept/$1
+
+echo "Template '$1' created for JS."
+cd ../../exercises/concept/$1
+
+sed -i '' "s/---/$1/g" *
+
+mv concept-name.js $1.js
+mv concept-name.spec.js $1.js
+
+echo "Final directory:" && ls
+
+echo "Remember to fill out all details in every file!"

languages/javascript/scripts/scaffold/template/.docs/after.md

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+<!--
+This is the markdown file with the instructions for students to take after completing the challenge.
+
+See https://github.com/exercism/v3/blob/master/docs/concept-exercises.md#docsaftermd
+-->

languages/javascript/scripts/scaffold/template/.docs/hints.md

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+<!--
+This is the markdown file with the hints for students to use while completing this concept challenge.
+
+See https://github.com/exercism/v3/blob/master/docs/concept-exercises.md#docshintsmd
+-->

languages/javascript/scripts/scaffold/template/.docs/instructions.md

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+<!--
+This is the markdown file with the instructions on how to complete the exercise.
+
+See https://github.com/exercism/v3/blob/master/docs/concept-exercises.md#docsinstructionsmd
+-->

languages/javascript/scripts/scaffold/template/.docs/introduction.md

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+<!--
+This is the markdown file with the introduction to the concept and exercise.
+
+See https://github.com/exercism/v3/blob/master/docs/concept-exercises.md#docsintroductionmd
+-->

languages/javascript/scripts/scaffold/template/.eslintrc

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+{
+  "root": true,
+  "parser": "babel-eslint",
+  "parserOptions": {
+    "ecmaVersion": 7,
+    "sourceType": "module"
+  },
+  "env": {
+    "es6": true,
+    "node": true,
+    "jest": true
+  },
+  "extends": [
+    "eslint:recommended",
+    "plugin:import/errors",
+    "plugin:import/warnings"
+  ],
+  "rules": {
+    "linebreak-style": "off",
+
+    "import/extensions": "off",
+    "import/no-default-export": "off",
+    "import/no-unresolved": "off",
+    "import/prefer-default-export": "off"
+  }
+}

languages/javascript/scripts/scaffold/template/.gitignore

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+node_modules
+yarn-error.log
+

languages/javascript/scripts/scaffold/template/.meta/config.json

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+{
+  "authors": [
+    {
+      "github_username": "username",
+      "exercism_username": "username"
+    }
+  ],
+  "forked_from": []
+}

languages/javascript/scripts/scaffold/template/babel.config.js

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+module.exports = {
+  presets: [
+    [
+      '@babel/env',
+      {
+        targets: {
+          node: 'current',
+        },
+        useBuiltIns: true,
+      },
+
+    ],
+  ],
+};

languages/javascript/scripts/scaffold/template/concept-name.js

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+/*
+
+This is the stub implementation file, which is the starting point for students to work on the exercise.
+
+*/

languages/javascript/scripts/scaffold/template/concept-name.spec.js

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+/*
+
+This is the exercise's test suite.
+
+*/

languages/javascript/scripts/scaffold/template/example.js

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+/*
+This is an example implementation that passes all the tests.
+*/

languages/javascript/scripts/scaffold/template/package.json

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+{
+  "name": "@exercism/---",
+  "description": "description",
+  "author": "author",
+  "version": "1.0.0",
+  "license": "MIT",
+  "private": true,
+  "repository": {
+    "type": "git",
+    "url": "https://github.com/exercism/v3.git",
+    "directory": "languages/javascript/exercises/concept/---"
+  },
+  "devDependencies": {
+    "@babel/cli": "^7.8.4",
+    "@babel/core": "^7.9.6",
+    "@babel/preset-env": "^7.9.6",
+    "@types/jest": "^25.2.2",
+    "@types/node": "^14.0.1",
+    "babel-eslint": "^10.1.0",
+    "babel-jest": "^26.0.1",
+    "eslint": "^7.0.0",
+    "eslint-plugin-import": "^2.20.2",
+    "jest": "^26.0.1"
+  },
+  "dependencies": {},
+  "jest": {
+    "modulePathIgnorePatterns": [
+      "package.json"
+    ]
+  },
+  "scripts": {
+    "test": "jest --no-cache ./*",
+    "watch": "jest --no-cache --watch ./*",
+    "lint": "eslint .",
+    "lint-test": "eslint . && jest --no-cache ./* "
+  }
+}