add file

node_modules/@nuxt/babel-preset-app/README.md

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+# `@nuxt/babel-preset-app`
+
+> Default babel preset for nuxt
+
+## Usage
+
+This is the default preset used by Nuxt, which is mainly a wrapper around the `@babel/preset-env` preset. It also optionally uses the `@vue/babel-preset-jsx` preset as well as `@babel/plugin-proposal-decorators`, `@babel/plugin-proposal-class-properties`, `@babel/plugin-transform-runtime`. Furthermore the preset is adding polyfills.
+
+**Note**: Since `core-js@2` and `core-js@3` are both supported from Babel 7.4.0, we recommend directly adding `core-js` and setting the version via the [`corejs`](#corejs) option.
+
+```sh
+yarn add --dev core-js@3 @babel/runtime-corejs3
+
+# or
+
+yarn add --dev core-js@2 @babel/runtime-corejs2
+
+```
+
+Usually, no additional configuration is required. If needed though, there is an option to fine-tune the preset's behavior. Just add the following to `nuxt.config.js`:
+
+```js
+babel: {
+  presets(env, [ preset, options ]) {
+    return [
+      [ "@nuxt/babel-preset-app", options ]
+    ]
+  }
+}
+```
+
+`env` is an object which contains `envName` (`server`, `client`, `modern`) and all `nuxtEnv` properties (`isDev`, `isServer`, `isClient`, `isModern`, `isLegacy`)
+
+`preset` is the preset package name `@nuxt/babel-preset-app`
+
+`options` is an object with parameters, for example:
+
+```js
+const options = {
+  useBuiltIns: "entry"
+}
+```
+
+Below is a list of all available `options` parameters:
+
+### Options
+
+* **bugfixes** - [`@babel/preset-env`](https://babeljs.io/docs/en/babel-preset-env#bugfixes)
+* **configPath** - [`@babel/preset-env` parameter](https://babeljs.io/docs/en/babel-preset-env#configpath)
+* **forceAllTransforms** - '[@babel/preset-env](https://babeljs.io/docs/en/babel-preset-env#forcealltransforms)' parameter
+* **debug**, default  `false` - '[@babel/preset-env](https://babeljs.io/docs/en/babel-preset-env#debug)' parameter
+* **decoratorsBeforeExport**
+* **decoratorsLegacy**, default true
+* **exclude** - '[@babel/preset-env](https://babeljs.io/docs/en/babel-preset-env#exclude)' parameter
+* **ignoreBrowserslistConfig**, defaults to value of `modern` - '[@babel/preset-env](https://babeljs.io/docs/en/babel-preset-env#ignorebrowserslistconfig)' parameter
+* **include** - '[@babel/preset-env](https://babeljs.io/docs/en/babel-preset-env#include)' parameter
+* **jsx**, default true, can be a an object passed as params to [@vue/babel-preset-jsx`](https://www.npmjs.com/package/@vue/babel-preset-jsx)
+* **loose**, default `false` - '[@babel/preset-env](https://babeljs.io/docs/en/babel-preset-env#loose)' parameter and also sets `loose=true` for `@babel/plugin-proposal-class-properties`
+* **modules**, default `false` - '[@babel/preset-env](https://babeljs.io/docs/en/babel-preset-env#modules)' parameter
+* **polyfills**, default `core-js@2: ['es6.array.iterator','es6.promise','es6.object.assign','es7.promise.finally']`, `core-js@3: ['es.array.iterator','es.promise','es.object.assign','es.promise.finally']`, more [in the corresponding repository](https://github.com/zloirock/core-js)
+* **shippedProposals** - '[@babel/preset-env](https://babeljs.io/docs/en/babel-preset-env#shippedproposals)' parameter
+* **spec** - '[@babel/preset-env](https://babeljs.io/docs/en/babel-preset-env#spec)' parameter
+* **targets** - '[@babel/preset-env](https://babeljs.io/docs/en/babel-preset-env#targets)' parameter
+* **useBuiltIns**, default `"usage"` - '[@babel/preset-env](https://babeljs.io/docs/en/babel-preset-env#usebuiltins)' parameter
+* **corejs**, default `{ version: 2 }` - '[@babel/preset-env](https://babeljs.io/docs/en/babel-preset-env#corejs)' parameter
+
+There are [detailed docs](https://babeljs.io/docs/en/babel-preset-env#options) for the parameters of '@babel/preset-env'.
+
+### Example 1. Change targets for server and client respectively
+
+```js
+export default {
+  build: {
+    babel: {
+      presets({ envName }) {
+        const envTargets = {
+          client: { browsers: ["last 2 versions"], ie: 11 },
+          server: { node: "current" },
+        }
+        return [
+          [
+            "@nuxt/babel-preset-app",
+            {
+              targets: envTargets[envName]
+            }
+          ]
+        ]
+      }
+    }
+  }
+}
+```
+
+### Example 2. Use core-js@3
+
+**NOTE**: Make sure that all dependencies have been upgraded to use core-js@3. If core-js@2 and core-js@3 are both dependent, babel may resolve incorrect core-js package which is hoisted by yarn/npm.
+
+```sh
+yarn add --dev core-js@3 @babel/runtime-corejs3
+```
+
+```js
+export default {
+  build: {
+    babel: {
+      // envName: server, client, modern
+      presets({ envName }) {
+        return [
+          [
+            '@nuxt/babel-preset-app',
+            {
+              corejs: { version: 3 }
+            }
+          ]
+        ]
+      }
+    }
+  }
+}
+```

node_modules/@nuxt/babel-preset-app/package.json

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+{
+  "_args": [
+    [
+      "@nuxt/babel-preset-app@2.13.3",
+      "/mnt/Foxconn/Digitalent/Deverloper/liff-push_2series"
+    ]
+  ],
+  "_from": "@nuxt/babel-preset-app@2.13.3",
+  "_id": "@nuxt/babel-preset-app@2.13.3",
+  "_inBundle": false,
+  "_integrity": "sha512-X37o20MbGr+xUVdAExUTrzJrXYCOQ5jiXrMgSmnFi05maNGMd5ruLehmsnS161TUHimlADwoNBjHjU/XM2NmrQ==",
+  "_location": "/@nuxt/babel-preset-app",
+  "_phantomChildren": {},
+  "_requested": {
+    "type": "version",
+    "registry": true,
+    "raw": "@nuxt/babel-preset-app@2.13.3",
+    "name": "@nuxt/babel-preset-app",
+    "escapedName": "@nuxt%2fbabel-preset-app",
+    "scope": "@nuxt",
+    "rawSpec": "2.13.3",
+    "saveSpec": null,
+    "fetchSpec": "2.13.3"
+  },
+  "_requiredBy": [
+    "/@nuxt/webpack"
+  ],
+  "_resolved": "https://registry.npmjs.org/@nuxt/babel-preset-app/-/babel-preset-app-2.13.3.tgz",
+  "_spec": "2.13.3",
+  "_where": "/mnt/Foxconn/Digitalent/Deverloper/liff-push_2series",
+  "author": {
+    "name": "Evan You"
+  },
+  "bugs": {
+    "url": "https://github.com/nuxt/nuxt.js/issues"
+  },
+  "contributors": [
+    {
+      "name": "Clark Du"
+    }
+  ],
+  "dependencies": {
+    "@babel/core": "^7.10.4",
+    "@babel/helper-compilation-targets": "^7.10.4",
+    "@babel/plugin-proposal-class-properties": "^7.10.4",
+    "@babel/plugin-proposal-decorators": "^7.10.4",
+    "@babel/plugin-transform-runtime": "^7.10.4",
+    "@babel/preset-env": "^7.10.4",
+    "@babel/runtime": "^7.10.4",
+    "@vue/babel-preset-jsx": "^1.1.2",
+    "core-js": "^2.6.5"
+  },
+  "description": "babel-preset-app for nuxt.js",
+  "homepage": "https://github.com/nuxt/nuxt.js#readme",
+  "license": "MIT",
+  "main": "src/index.js",
+  "name": "@nuxt/babel-preset-app",
+  "publishConfig": {
+    "access": "public"
+  },
+  "repository": {
+    "type": "git",
+    "url": "git+https://github.com/nuxt/nuxt.js.git"
+  },
+  "version": "2.13.3"
+}

node_modules/@nuxt/babel-preset-app/src/index.js

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+const coreJsMeta = {
+  2: {
+    prefixes: {
+      es6: 'es6',
+      es7: 'es7'
+    },
+    builtIns: '@babel/compat-data/corejs2-built-ins'
+  },
+  3: {
+    prefixes: {
+      es6: 'es',
+      es7: 'es'
+    },
+    builtIns: 'core-js-compat/data'
+  }
+}
+
+function getDefaultPolyfills (corejs) {
+  const { prefixes: { es6, es7 } } = coreJsMeta[corejs.version]
+  return [
+    // Promise polyfill alone doesn't work in IE,
+    // Needs this as well. see: #1642
+    `${es6}.array.iterator`,
+    // This is required for webpack code splitting, vuex etc.
+    `${es6}.promise`,
+    // this is needed for object rest spread support in templates
+    // as vue-template-es2015-compiler 1.8+ compiles it to Object.assign() calls.
+    `${es6}.object.assign`,
+    // #2012 es7.promise replaces native Promise in FF and causes missing finally
+    `${es7}.promise.finally`
+  ]
+}
+
+function getPolyfills (targets, includes, { ignoreBrowserslistConfig, configPath, corejs }) {
+  const { default: getTargets, isRequired } = require('@babel/helper-compilation-targets')
+  const builtInsList = require(coreJsMeta[corejs.version].builtIns)
+  const builtInTargets = getTargets(targets, {
+    ignoreBrowserslistConfig,
+    configPath
+  })
+
+  return includes.filter(item => isRequired(
+    'nuxt-polyfills',
+    builtInTargets,
+    {
+      compatData: { 'nuxt-polyfills': builtInsList[item] }
+    }
+  ))
+}
+
+module.exports = (api, options = {}) => {
+  const presets = []
+  const plugins = []
+
+  const envName = api.env()
+
+  const {
+    bugfixes,
+    polyfills: userPolyfills,
+    loose = false,
+    debug = false,
+    useBuiltIns = 'usage',
+    modules = false,
+    spec,
+    ignoreBrowserslistConfig = envName === 'modern',
+    configPath,
+    include,
+    exclude,
+    shippedProposals,
+    forceAllTransforms,
+    decoratorsBeforeExport,
+    decoratorsLegacy,
+    absoluteRuntime
+  } = options
+
+  let { corejs = { version: 2 } } = options
+
+  if (typeof corejs !== 'object') {
+    corejs = { version: Number(corejs) }
+  }
+
+  const defaultTargets = {
+    server: { node: 'current' },
+    client: { ie: 9 },
+    modern: { esmodules: true }
+  }
+
+  let { targets = defaultTargets[envName] } = options
+
+  // modern mode can only be { esmodules: true }
+  if (envName === 'modern') {
+    targets = defaultTargets.modern
+  }
+
+  const polyfills = []
+
+  if (envName === 'client' && useBuiltIns === 'usage') {
+    polyfills.push(
+      ...getPolyfills(
+        targets,
+        userPolyfills || getDefaultPolyfills(corejs),
+        {
+          ignoreBrowserslistConfig,
+          configPath,
+          corejs
+        }
+      )
+    )
+    plugins.push([require('./polyfills-plugin'), { polyfills }])
+  }
+
+  // Pass options along to babel-preset-env
+  presets.push([
+    require('@babel/preset-env'), {
+      bugfixes,
+      spec,
+      loose,
+      debug,
+      modules,
+      targets,
+      useBuiltIns,
+      corejs,
+      ignoreBrowserslistConfig,
+      configPath,
+      include,
+      exclude: polyfills.concat(exclude || []),
+      shippedProposals,
+      forceAllTransforms
+    }
+  ])
+
+  // JSX
+  if (options.jsx !== false) {
+    presets.push([require('@vue/babel-preset-jsx'), Object.assign({}, options.jsx)])
+  }
+
+  plugins.push(
+    [require('@babel/plugin-proposal-decorators'), {
+      decoratorsBeforeExport,
+      legacy: decoratorsLegacy !== false
+    }],
+    [require('@babel/plugin-proposal-class-properties'), { loose: true }]
+  )
+
+  // Transform runtime, but only for helpers
+  plugins.push([require('@babel/plugin-transform-runtime'), {
+    regenerator: useBuiltIns !== 'usage',
+    corejs: false,
+    helpers: useBuiltIns === 'usage',
+    useESModules: envName !== 'server',
+    absoluteRuntime
+  }])
+
+  return {
+    sourceType: 'unambiguous',
+    presets,
+    plugins
+  }
+}

node_modules/@nuxt/babel-preset-app/src/polyfills-plugin.js

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+// Add polyfill imports to the first file encountered.
+module.exports = ({ types }) => {
+  let entryFile
+  return {
+    name: 'inject-polyfills',
+    visitor: {
+      Program (path, state) {
+        if (!entryFile) {
+          entryFile = state.filename
+        } else if (state.filename !== entryFile) {
+          return
+        }
+
+        const { polyfills } = state.opts
+        const { createImport } = require('@babel/preset-env/lib/utils')
+
+        // Imports are injected in reverse order
+        polyfills.slice().reverse().forEach((p) => {
+          createImport(path, p)
+        })
+      }
+    }
+  }
+}