deprecates babel/polyfill in favor of core-js@3 (#2031)

Author: somebody32

docs/es6.md

@@ -16,13 +16,14 @@ Following ES6/7 features are supported out of the box:
 * Dynamic import() - useful for route level code-splitting
 * Class Fields and Static Properties.
 
-We have also included [babel polyfill](https://babeljs.io/docs/usage/polyfill/)
-that includes a custom regenerator runtime and core-js.
+We have also included [core-js](https://github.com/zloirock/core-js) to polyfill features in the
+older browsers.
 
-Don't forget to import `@babel/polyfill` in your main entry point like so:
+Don't forget to add these lines into your main entry point:
 
 ```js
-import "@babel/polyfill"
+import "core-js/stable";
+import "regenerator-runtime/runtime";
 ```
 
 

lib/install/config/babel.config.js

@@ -30,6 +30,7 @@ module.exports = function(api) {
         {
           forceAllTransforms: true,
           useBuiltIns: 'entry',
+          corejs: 3,
           modules: false,
           exclude: ['transform-typeof-symbol']
         }
@@ -56,7 +57,8 @@ module.exports = function(api) {
         require('@babel/plugin-transform-runtime').default,
         {
           helpers: false,
-          regenerator: true
+          regenerator: true,
+          corejs: 3
         }
       ],
       [

lib/install/examples/react/babel.config.js

@@ -30,6 +30,7 @@ module.exports = function(api) {
         {
           forceAllTransforms: true,
           useBuiltIns: 'entry',
+          corejs: 3,
           modules: false,
           exclude: ['transform-typeof-symbol']
         }

package.json

@@ -12,21 +12,22 @@
     "yarn": ">=1.0.0"
   },
   "dependencies": {
-    "@babel/core": "^7.3.4",
-    "@babel/plugin-proposal-class-properties": "^7.3.4",
-    "@babel/plugin-proposal-object-rest-spread": "^7.3.4",
+    "@babel/core": "^7.4.0",
+    "@babel/plugin-proposal-class-properties": "^7.4.0",
+    "@babel/plugin-proposal-object-rest-spread": "^7.4.0",
     "@babel/plugin-syntax-dynamic-import": "^7.2.0",
-    "@babel/plugin-transform-destructuring": "^7.3.2",
-    "@babel/plugin-transform-regenerator": "^7.3.4",
-    "@babel/plugin-transform-runtime": "^7.3.4",
-    "@babel/polyfill": "^7.2.5",
-    "@babel/preset-env": "^7.3.4",
-    "@babel/runtime": "^7.3.4",
+    "@babel/plugin-transform-destructuring": "^7.4.0",
+    "@babel/plugin-transform-regenerator": "^7.4.0",
+    "@babel/plugin-transform-runtime": "^7.4.0",
+    "@babel/preset-env": "^7.4.0",
+    "@babel/runtime": "^7.4.0",
+    "@babel/runtime-corejs3": "^7.4.3",
     "babel-loader": "^8.0.5",
     "babel-plugin-dynamic-import-node": "^2.2.0",
     "babel-plugin-macros": "^2.5.0",
     "case-sensitive-paths-webpack-plugin": "^2.2.0",
     "compression-webpack-plugin": "^2.0.0",
+    "core-js": "^3.0.0",
     "css-loader": "^2.1.1",
     "file-loader": "^3.0.1",
     "flatted": "^2.0.0",
@@ -42,6 +43,7 @@
     "postcss-loader": "^3.0.0",
     "postcss-preset-env": "^6.6.0",
     "postcss-safe-parser": "^4.0.1",
+    "regenerator-runtime": "^0.13.2",
     "sass-loader": "^7.1.0",
     "style-loader": "^0.23.1",
     "terser-webpack-plugin": "^1.2.3",

package/rules/node_modules.js

@@ -6,7 +6,7 @@ const { nodeEnv } = require('../env')
 module.exports = {
   test: /\.(js|mjs)$/,
   include: /node_modules/,
-  exclude: /@babel(?:\/|\\{1,2})runtime/,
+  exclude: /@babel(?:\/|\\{1,2})runtime|core-js/,
   use: [
     {
       loader: 'babel-loader',