Update to Babel 7

Notable changes:
* All official packages have moved under the `@babel/` namespace and in
  some cases further renamed, so package names adjusted accordingly.
* `@babel/preset-env` now includes `@babel/plugin-transform-spread` and
  `@babel/plugin-transform-classes`, which are the Babel 7 renames of
  `babel-plugin-transform-object-rest-spread` and
  `babel-plugin-transform-es2015-classes`.
* `@babel/preset-env`'s `useBuiltIns: true` mode has been renamed to
  `useBuiltIns: 'entry'` - which is equivalent.
* `@babel/preset-react` now has `development` and `useBuiltIns` options,
  which we set appropriately:
  https://github.com/babel/babel/tree/v7.0.0-beta.46/packages/babel-preset-react#options
* `babel-plugin-dynamic-import-node` is no longer required by
  `@neutrinojs/library` for target `node`, since webpack converts the
  dynamic import to a require itself.
* `@neutrinojs/jest` required more substantial changes since:
  - the custom transformer used the now removed `canCompile()` from
    Babel's API.
  - `babel-preset-jest` is not fully compatible with Babel 7
    (jestjs/jest#6126).
* Several packages now have a peer dependency on `@babel/core`, so it's
  been added where necessary.
* `babel-loader` has been updated to v8 for Babel 7 compatibility.
* `@neutrinojs/vue`'s `babel-preset-vue` dependency doesn't appear to
  be used, but has been left as is pending #836.

Closes #316.

docs/cli/README.md

@@ -88,8 +88,8 @@ index 3356802..d4d82ef 100644
    devtool: 'source-map',
    entry: {
      index: [
--      'babel-polyfill',
-       '/node/src/index.js'
+-      '/node/src/index.js'
++      '/node/src/app.js'
      ]
    },
 ```

docs/packages/compile-loader/README.md

@@ -82,7 +82,7 @@ const { merge } = require('@neutrinojs/compile-loader');
 const together = merge(
   {
     presets: [
-      ['babel-preset-env', {
+      ['@babel/preset-env', {
         targets: {
           browsers: ['latest 1 Chrome']
         }
@@ -91,7 +91,7 @@ const together = merge(
   },
   {
     presets: [
-      ['babel-preset-env', {
+      ['@babel/preset-env', {
         targets: {
           browsers: ['latest 1 Firefox']
         }
@@ -105,7 +105,7 @@ console.log(together);
 // Logs:
 {
   presets: [
-    ['babel-preset-env', {
+    ['@babel/preset-env', {
       targets: {
         browsers: [
           'latest 1 Chrome',
@@ -139,8 +139,8 @@ config.module
     .use('babel')
       .tap(options => merge({
         plugins: [
-          require.resolve('babel-plugin-transform-decorators-legacy'),
-          require.resolve('babel-plugin-transform-class-properties')
+          require.resolve('@babel/plugin-proposal-decorators'),
+          require.resolve('@babel/plugin-proposal-class-properties')
         ]
       }, options));
 ```

docs/packages/library/README.md

@@ -252,10 +252,10 @@ module.exports = {
 
       // Add additional Babel plugins, presets, or env options
       babel: {
-        // Override options for babel-preset-env
+        // Override options for @babel/preset-env
         presets: [
-          ['babel-preset-env', {
-            // Passing in browser targets to babel-preset-env will replace them
+          ['@babel/preset-env', {
+            // Passing in browser targets to @babel/preset-env will replace them
             // instead of merging them when using the 'web' target
             targets: {
               browsers: [
@@ -282,9 +282,9 @@ module.exports = {
       libraryTarget: 'commonjs2',
       // Add additional Babel plugins, presets, or env options
       babel: {
-        // Override options for babel-preset-env
+        // Override options for @babel/preset-env
         presets: [
-          ['babel-preset-env', {
+          ['@babel/preset-env', {
             targets: {
               node: '6.0'
             }

docs/packages/node/README.md

@@ -255,7 +255,7 @@ module.exports = {
       // Enables Hot Module Replacement. Set to false to disable
       hot: true,
 
-      // Target specific versions via babel-preset-env
+      // Target specific versions via @babel/preset-env
       targets: {
         node: '8.3'
       },
@@ -268,9 +268,9 @@ module.exports = {
 
       // Add additional Babel plugins, presets, or env options
       babel: {
-        // Override options for babel-preset-env, showing defaults:
+        // Override options for @babel/preset-env, showing defaults:
         presets: [
-          ['babel-preset-env', {
+          ['@babel/preset-env', {
             targets: { node: '8.3' },
             modules: false,
             useBuiltIns: true,
@@ -288,7 +288,7 @@ _Example: Override the Node.js Babel compilation target to Node.js v6:_
 module.exports = {
   use: [
     ['@neutrinojs/node', {
-      // Target specific versions via babel-preset-env
+      // Target specific versions via @babel/preset-env
       targets: {
         node: '6.0'
       }

docs/packages/preact/README.md

@@ -214,7 +214,7 @@ module.exports = {
         title: 'Epic Preact App'
       },
 
-      // Target specific browsers with babel-preset-env
+      // Target specific browsers with @babel/preset-env
       targets: {
         browsers: [
           'last 1 Chrome versions',
@@ -224,9 +224,9 @@ module.exports = {
 
       // Add additional Babel plugins, presets, or env options
       babel: {
-        // Override options for babel-preset-env:
+        // Override options for @babel/preset-env:
         presets: [
-          ['babel-preset-env', {
+          ['@babel/preset-env', {
             modules: false,
             useBuiltIns: true,
           }]

docs/packages/react-components/README.md

@@ -25,8 +25,8 @@ other Neutrino middleware, so you can build, test, and publish multiple React co
   - Production-optimized bundles with minification, easy chunking, and scope-hoisted modules for faster execution
   - Easily extensible to customize your project as needed
 
-**Important! This preset does not include babel-polyfill for size reasons. If you need
-polyfills in your library code, consider importing babel-polyfill, core-js, or other alternative.**
+**Important! This preset does not include @babel/polyfill for size reasons. If you need
+polyfills in your library code, consider importing @babel/polyfill, core-js, or other alternative.**
 
 ## Requirements
 

docs/packages/react/README.md

@@ -203,7 +203,7 @@ module.exports = {
         title: 'Epic React App'
       },
 
-      // Target specific browsers with babel-preset-env
+      // Target specific browsers with @babel/preset-env
       targets: {
         browsers: [
           'last 1 Chrome versions',
@@ -213,9 +213,9 @@ module.exports = {
 
       // Add additional Babel plugins, presets, or env options
       babel: {
-        // Override options for babel-preset-env:
+        // Override options for @babel/preset-env:
         presets: [
-          ['babel-preset-env', {
+          ['@babel/preset-env', {
             modules: false,
             useBuiltIns: true,
           }]

docs/packages/vue/README.md

@@ -219,7 +219,7 @@ module.exports = {
         title: 'Epic Vue App'
       },
 
-      // Target specific browsers with babel-preset-env
+      // Target specific browsers with @babel/preset-env
       targets: {
         browsers: [
           'last 1 Chrome versions',
@@ -229,9 +229,9 @@ module.exports = {
 
       // Add additional Babel plugins, presets, or env options
       babel: {
-        // Override options for babel-preset-env:
+        // Override options for @babel/preset-env:
         presets: [
-          ['babel-preset-env', {
+          ['@babel/preset-env', {
             modules: false,
             useBuiltIns: true,
           }]

docs/packages/web/README.md

@@ -231,7 +231,7 @@ module.exports = {
         proxy: 'https://localhost:8000/api/'
       },
 
-      // Target specific browsers with babel-preset-env
+      // Target specific browsers with @babel/preset-env
       targets: {
         browsers: [
           'last 1 Chrome versions',
@@ -241,9 +241,9 @@ module.exports = {
 
       // Add additional Babel plugins, presets, or env options
       babel: {
-        // Override options for babel-preset-env:
+        // Override options for @babel/preset-env:
         presets: [
-          ['babel-preset-env', {
+          ['@babel/preset-env', {
             modules: false,
             useBuiltIns: true,
           }]
@@ -277,7 +277,7 @@ module.exports = {
         source: false
       },
 
-      // Example: Use a .browserslistrc file with babel-env
+      // Example: Use a .browserslistrc file with @babel/preset-env
       targets: {
         browsers: require('browserslist')()
       },

docs/presets/README.md

@@ -7,7 +7,7 @@ types, but anyone can inherit, extend, and modify these presets and tailor them
 team, or company preferences. You can even create your own presets from scratch.
 
 If you are familiar with Babel presets, Neutrino presets work similarly. For example,
-given the Babel preset `babel-preset-react`, you can compile React code with JSX
+given the Babel preset `@babel/preset-react`, you can compile React code with JSX
 to vanilla JavaScript calls. Neutrino adopts this same concept by adapting webpack into
 a tool that understands configurations-as-packages, i.e. presets. Many more aspects of
 development surround building a complete React project, for which webpack is commonly used.

packages/compile-loader/README.md

@@ -82,7 +82,7 @@ const { merge } = require('@neutrinojs/compile-loader');
 const together = merge(
   {
     presets: [
-      ['babel-preset-env', {
+      ['@babel/preset-env', {
         targets: {
           browsers: ['latest 1 Chrome']
         }
@@ -91,7 +91,7 @@ const together = merge(
   },
   {
     presets: [
-      ['babel-preset-env', {
+      ['@babel/preset-env', {
         targets: {
           browsers: ['latest 1 Firefox']
         }
@@ -105,7 +105,7 @@ console.log(together);
 // Logs:
 {
   presets: [
-    ['babel-preset-env', {
+    ['@babel/preset-env', {
       targets: {
         browsers: [
           'latest 1 Chrome',
@@ -139,8 +139,8 @@ config.module
     .use('babel')
       .tap(options => merge({
         plugins: [
-          require.resolve('babel-plugin-transform-decorators-legacy'),
-          require.resolve('babel-plugin-transform-class-properties')
+          require.resolve('@babel/plugin-proposal-decorators'),
+          require.resolve('@babel/plugin-proposal-class-properties')
         ]
       }, options));
 ```

packages/compile-loader/package.json

@@ -23,8 +23,8 @@
     "yarn": ">=1.2.1"
   },
   "dependencies": {
-    "babel-core": "^6.26.0",
-    "babel-loader": "^7.1.2",
+    "@babel/core": "^7.0.0-beta.46",
+    "babel-loader": "^8.0.0-beta.2",
     "babel-merge": "^1.1.0",
     "deepmerge": "^1.5.2",
     "webpack": "^4.6.0"

packages/jest/package.json

@@ -22,10 +22,10 @@
     "yarn": ">=1.2.1"
   },
   "dependencies": {
+    "@babel/core": "^7.0.0-beta.46",
+    "@babel/plugin-transform-modules-commonjs": "^7.0.0-beta.46",
     "@neutrinojs/loader-merge": "^8.2.0",
-    "babel-core": "^6.26.0",
-    "babel-plugin-transform-es2015-modules-commonjs": "^6.26.0",
-    "babel-preset-jest": "^22.4.3",
+    "babel-plugin-jest-hoist": "^22.4.3",
     "deepmerge": "^1.5.2",
     "eslint": "^4.12.1",
     "eslint-plugin-jest": "^21.4.2",

packages/jest/src/index.js

@@ -94,9 +94,15 @@ module.exports = (neutrino, opts = {}) => {
     neutrino.config.when(usingBabel, () => {
       neutrino.use(loaderMerge('compile', 'babel'), {
         retainLines: true,
-        presets: [require.resolve('babel-preset-jest')],
         plugins: [
-          require.resolve('babel-plugin-transform-es2015-modules-commonjs')
+          // Once babel-preset-jest has better Babel 7 support we should switch back to it
+          // (or even use babel-jest, which will allow simplifying the transformer too):
+          // https://github.com/facebook/jest/issues/6126
+          // For now this plugin is taken from here (we don't need object-rest-spread since node >=8.3):
+          // https://github.com/facebook/jest/blob/v22.4.2/packages/babel-preset-jest/index.js#L11-L12
+          require.resolve('babel-plugin-jest-hoist'),
+          // Since the tests will be run by node which doesn't yet support ES2015 modules
+          require.resolve('@babel/plugin-transform-modules-commonjs')
         ]
       });
     });

packages/jest/src/transformer.js

@@ -1,9 +1,17 @@
-const babel = require('babel-core');
+const { transform } = require('@babel/core');
 
 module.exports = {
+  // This is inspired by:
+  // https://github.com/facebook/jest/blob/v22.4.2/packages/babel-jest/src/index.js#L105-L147
+  // And is required due to:
+  // https://github.com/facebook/jest/issues/1468
+  // TODO: See if it would be easier to switch to the higher-level babel-jest,
+  // and wrap that instead.
   process(src, filename, config) {
-    return babel.util.canCompile(filename) ?
-      babel.transform(src, Object.assign({}, { filename }, config.globals.BABEL_OPTIONS)).code :
-      src;
+    // Babel 7 returns null if the file was ignored.
+    return transform(
+      src,
+      Object.assign({}, { filename }, config.globals.BABEL_OPTIONS)
+    ) || src;
   }
 };

packages/library/README.md

@@ -252,10 +252,10 @@ module.exports = {
 
       // Add additional Babel plugins, presets, or env options
       babel: {
-        // Override options for babel-preset-env
+        // Override options for @babel/preset-env
         presets: [
-          ['babel-preset-env', {
-            // Passing in browser targets to babel-preset-env will replace them
+          ['@babel/preset-env', {
+            // Passing in browser targets to @babel/preset-env will replace them
             // instead of merging them when using the 'web' target
             targets: {
               browsers: [
@@ -282,9 +282,9 @@ module.exports = {
       libraryTarget: 'commonjs2',
       // Add additional Babel plugins, presets, or env options
       babel: {
-        // Override options for babel-preset-env
+        // Override options for @babel/preset-env
         presets: [
-          ['babel-preset-env', {
+          ['@babel/preset-env', {
             targets: {
               node: '6.0'
             }

packages/library/index.js

@@ -25,15 +25,13 @@ module.exports = (neutrino, opts = {}) => {
   Object.assign(options, {
     babel: compileLoader.merge({
       plugins: [
-        options.target === 'node' ?
-          require.resolve('babel-plugin-dynamic-import-node') :
-          require.resolve('babel-plugin-syntax-dynamic-import')
+        require.resolve('@babel/plugin-syntax-dynamic-import')
       ],
       presets: [
-        [require.resolve('babel-preset-env'), {
+        [require.resolve('@babel/preset-env'), {
           debug: neutrino.options.debug,
           modules: false,
-          useBuiltIns: true,
+          useBuiltIns: 'entry',
           targets: options.target === 'node' ?
             { node: '8.3' } :
             { browsers: [] }

packages/library/package.json

@@ -30,12 +30,13 @@
     "yarn": ">=1.2.1"
   },
   "dependencies": {
+    "@babel/core": "^7.0.0-beta.46",
+    "@babel/plugin-syntax-dynamic-import": "^7.0.0-beta.46",
+    "@babel/preset-env": "^7.0.0-beta.46",
     "@neutrinojs/banner": "^8.2.0",
     "@neutrinojs/clean": "^8.2.0",
     "@neutrinojs/compile-loader": "^8.2.0",
     "@neutrinojs/loader-merge": "^8.2.0",
-    "babel-plugin-syntax-dynamic-import": "^6.18.0",
-    "babel-preset-env": "^1.6.0",
     "deepmerge": "^1.5.2",
     "webpack": "^4.6.0",
     "webpack-node-externals": "^1.6.0",

packages/mocha/package.json

@@ -20,9 +20,10 @@
     "yarn": ">=1.2.1"
   },
   "dependencies": {
+    "@babel/core": "^7.0.0-beta.46",
+    "@babel/plugin-transform-modules-commonjs": "^7.0.0-beta.46",
+    "@babel/register": "^7.0.0-beta.46",
     "@neutrinojs/loader-merge": "^8.2.0",
-    "babel-plugin-transform-es2015-modules-commonjs": "^6.26.0",
-    "babel-register": "^6.26.0",
     "change-case": "^3.0.1",
     "deepmerge": "^1.5.2",
     "mocha": "^5.0.0",