feat(all): use core-js v3 to replace deprecated @babel/polyfill

Reference: https://github.com/zloirock/core-js#babelpolyfill
https://babeljs.io/blog/2019/03/19/7.4.0#migration-from-core-js-2
This migration is necessary to keep future cli-bundler built working as @babel/polyfill will stay at core-js v2 which could cause potiential version conflicts with core-js v3.

lib/dependencies.json

@@ -16,20 +16,20 @@
   "aurelia-webpack-plugin": "^3.0.0",
   "aurelia-polyfills": "^1.3.3",
   "autoprefixer": "^9.4.8",
-  "@babel/core": "^7.3.3",
+  "@babel/core": "^7.4.0",
   "babel-eslint": "^10.0.1",
-  "babel-jest": "^24.1.0",
-  "babel-loader": "^8.0.4",
-  "babel-plugin-istanbul": "^5.1.0",
-  "@babel/plugin-proposal-decorators": "^7.3.0",
-  "@babel/plugin-proposal-class-properties": "^7.3.3",
-  "@babel/polyfill": "^7.2.5",
-  "@babel/preset-env": "^7.3.1",
-  "@babel/register": "^7.0.0",
+  "babel-jest": "^24.5.0",
+  "babel-loader": "^8.0.5",
+  "babel-plugin-istanbul": "^5.1.1",
+  "@babel/plugin-proposal-decorators": "^7.4.0",
+  "@babel/plugin-proposal-class-properties": "^7.4.0",
+  "@babel/preset-env": "^7.4.2",
+  "@babel/register": "^7.4.0",
   "browser-sync": "^2.26.3",
   "clean-webpack-plugin": "^1.0.1",
   "connect-history-api-fallback": "^1.6.0",
   "copy-webpack-plugin": "^5.0.0",
+  "core-js": "^3.0.0",
   "cross-env": "^5.2.0",
   "cssnano": "^4.1.10",
   "css-loader": "^1.0.0",
@@ -69,7 +69,7 @@
   "json-loader": "^0.5.7",
   "html-loader": "^0.5.5",
   "karma": "^3.0.0",
-  "karma-babel-preprocessor": "^8.0.0-beta.0",
+  "karma-babel-preprocessor": "^8.0.0",
   "karma-chrome-launcher": "^2.2.0",
   "karma-coverage-istanbul-reporter": "^2.0.4",
   "karma-jasmine": "^2.0.1",
@@ -83,6 +83,7 @@
   "postcss-loader": "^3.0.0",
   "postcss-url": "^8.0.0",
   "protractor": "^5.4.2",
+  "regenerator-runtime": "0.13.2",
   "requirejs": "^2.3.6",
   "sass-loader": "^7.1.0",
   "style-loader": "^0.23.1",

lib/project.js

@@ -104,7 +104,6 @@ function getMetadata(dir) {
 }
 
 function installBabel() {
-  require('@babel/polyfill');
   require('@babel/register')({
     babelrc: false,
     plugins: [

skeleton/cli-bundler/package.json

@@ -20,7 +20,6 @@
     "@babel/plugin-proposal-class-properties": "",
     "@babel/preset-env": "",
     "@babel/core": "",
-    "@babel/polyfill": "",
     "@babel/register": "",
     "gulp-babel": "",
     "gulp-cache": "",

skeleton/common/package.json

@@ -15,10 +15,15 @@
     "aurelia-cli": "",
     "aurelia-testing": "",
     "aurelia-tools": "",
+    "core-js": "",
     "gulp": "",
     "minimatch": "",
     "through2": "",
-    "vinyl-fs": ""
+    "vinyl-fs": "",
+
+    // @if feat.babel
+    "regenerator-runtime": "",
+    // @endif
   },
   "scripts": {
     "build": "au build",

skeleton/protractor/test/protractor.conf.js

@@ -58,7 +58,6 @@ exports.config = {
 // @if feat.babel
     process.env.BABEL_TARGET = 'node';
     process.env.IN_PROTRACTOR = 'true';
-    require('@babel/polyfill');
     require('@babel/register');
 // @endif
 // @if feat.typescript

skeleton/scaffold-minimum/src/main.ext

@@ -1,4 +1,7 @@
-import '@babel/polyfill';
+import 'core-js/stable';
+// @if feat.babel
+import 'regenerator-runtime/runtime';
+// @endif
 // @if feat.typescript
 import {Aurelia} from 'aurelia-framework'
 // @endif

skeleton/scaffold-navigation/src/main.ext

@@ -1,4 +1,7 @@
-import '@babel/polyfill';
+import 'core-js/stable';
+// @if feat.babel
+import 'regenerator-runtime/runtime';
+// @endif
 import 'bootstrap';
 // @if feat.typescript
 import {Aurelia} from 'aurelia-framework';

skeleton/webpack/package.json

@@ -14,7 +14,6 @@
     "@babel/plugin-proposal-class-properties": "",
     "@babel/preset-env": "",
     "@babel/core": "",
-    "@babel/polyfill": "",
     "@babel/register": "",
     // @endif