Drop support for the includePolyfill option

README.md

@@ -12,7 +12,6 @@ allow you to use latest Javascript in your Ember CLI project.
 - [Compatibility](#compatibility)
 - [Usage](#usage)
   * [Options](#options)
-    + [Polyfill](#polyfill)
     + [External Helpers](#external-helpers)
     + [Enabling Source Maps](#enabling-source-maps)
     + [Modules](#modules)
@@ -115,7 +114,6 @@ interface EmberCLIBabelConfig {
     Configuration options for ember-cli-babel itself.
   */
   'ember-cli-babel'?: {
-    includePolyfill?: boolean;
     includeExternalHelpers?: boolean;
     compileModules?: boolean;
     disableDebugTooling?: boolean;
@@ -165,26 +163,6 @@ module.exports = {
 };
 ```
 
-#### Polyfill
-
-Babel comes with a polyfill that includes a custom [regenerator
-runtime](https://github.com/facebook/regenerator/blob/master/runtime.js) and
-[core-js](https://github.com/zloirock/core-js). Many transformations will work
-without it, but for full support you may need to include the polyfill in your
-app.
-
-To include it in your app, pass `includePolyfill: true` in your `ember-cli-babel` options.
-
-```js
-// ember-cli-build.js
-
-let app = new EmberApp(defaults, {
-  'ember-cli-babel': {
-    includePolyfill: true
-  }
-});
-```
-
 #### External Helpers
 
 Babel often includes helper functions to handle some of the more complex logic

ember-cli-build.js

@@ -18,7 +18,6 @@ module.exports = function(defaults) {
 
   let app = new EmberAddon(defaults, {
     'ember-cli-babel': {
-      includePolyfill: true,
       includeExternalHelpers: true,
       // ember-cli-babels defaults, should be parallelizable. If they are not,
       // it should fail to build. This flag being enabled ensure that to be the

index.js

@@ -12,7 +12,6 @@ const {
 const VersionChecker = require('ember-cli-version-checker');
 const clone = require('clone');
 const babel = require('@babel/core');
-const path = require('path');
 const getBabelOptions = require('./lib/get-babel-options');
 const findApp = require('./lib/find-app');
 const emberPlugins = require('./lib/ember-plugins');
@@ -181,30 +180,6 @@ module.exports = {
     });
   },
 
-  _shouldIncludePolyfill() {
-    let addonOptions = this._getAddonOptions();
-    let customOptions = addonOptions['ember-cli-babel'];
-
-    if (customOptions && 'includePolyfill' in customOptions) {
-      return customOptions.includePolyfill === true;
-    } else {
-      return false;
-    }
-  },
-
-  _importPolyfill(app) {
-    let polyfillPath = 'vendor/babel-polyfill/polyfill.js';
-
-    if (this.import) {  // support for ember-cli >= 2.7
-      this.import(polyfillPath, { prepend: true });
-    } else if (app.import) { // support ember-cli < 2.7
-      app.import(polyfillPath, { prepend: true });
-    } else {
-      // eslint-disable-next-line no-console
-      console.warn('Please run: ember install ember-cli-import-polyfill');
-    }
-  },
-
   _getHelperVersion() {
     if (!APP_BABEL_RUNTIME_VERSION.has(this.project)) {
       let checker = new VersionChecker(this.project);
@@ -258,26 +233,8 @@ module.exports = {
     });
   },
 
-  treeForVendor() {
-    if (!this._shouldIncludePolyfill()) return;
-
-    const Funnel = require('broccoli-funnel');
-    const UnwatchedDir = require('broccoli-source').UnwatchedDir;
-
-    // Find babel-core's browser polyfill and use its directory as our vendor tree
-    let polyfillDir = path.dirname(require.resolve('@babel/polyfill/dist/polyfill'));
-
-    let polyfillTree = new Funnel(new UnwatchedDir(polyfillDir), {
-      destDir: 'babel-polyfill'
-    });
-
-    return polyfillTree;
-  },
-
   cacheKeyForTree(treeType) {
-    if (treeType === 'vendor') {
-      return cacheKeyForTree('vendor', this, [this._shouldIncludePolyfill()]);
-    } else if (treeType === 'addon') {
+    if (treeType === 'addon') {
       let isRootBabel = this.parent === this.project;
       let shouldIncludeHelpers = isRootBabel && _shouldIncludeHelpers(this._getAppOptions(), this);
 
@@ -287,15 +244,6 @@ module.exports = {
     return cacheKeyForTree(treeType, this);
   },
 
-  included: function(app) {
-    this._super.included.apply(this, arguments);
-    this.app = app;
-
-    if (this._shouldIncludePolyfill()) {
-      this._importPolyfill(app);
-    }
-  },
-
   isPluginRequired(pluginName) {
     let targets = this._getTargets();
 

node-tests/addon-test.js

@@ -134,15 +134,15 @@ describe('ember-cli-babel', function() {
           input.write({
             "foo.js": `import Component from '@glimmer/component';\nimport { tracked } from '@glimmer/tracking';\nexport default class Foo extends Component { @tracked thisIsTracked = true; }`,
           });
-  
+
           this.addon.project.targets = {
             browsers: ["last 2 chrome versions"],
           };
-  
+
           subject = this.addon.transpileTree(input.path(), {});
-  
+
           output = createBuilder(subject);
-  
+
           yield output.build();
           expect(output.read()["foo.js"]).not.to.include(
             "_initializerWarningHelper(_descriptor, this)"
@@ -1333,64 +1333,6 @@ describe('ember-cli-babel', function() {
     });
   });
 
-  describe('_shouldIncludePolyfill()', function() {
-    describe('without any includePolyfill option set', function() {
-      it('should return false', function() {
-        expect(this.addon._shouldIncludePolyfill()).to.be.false;
-      });
-
-      it('should not print deprecation messages', function() {
-        this.addon._shouldIncludePolyfill();
-
-        let deprecationMessages = this.ui.output.split('\n').filter(function(line) {
-          return line.indexOf('Putting the "includePolyfill" option in "babel" is deprecated') !== -1;
-        });
-
-        expect(deprecationMessages).to.have.lengthOf(0);
-      });
-    });
-
-    describe('with ember-cli-babel.includePolyfill = true', function() {
-      beforeEach(function() {
-        this.addon.parent.options = { 'ember-cli-babel': { includePolyfill: true } };
-      });
-
-      it('should return true', function() {
-        expect(this.addon._shouldIncludePolyfill()).to.be.true;
-      });
-
-      it('should not print deprecation messages', function() {
-        this.addon._shouldIncludePolyfill();
-
-        let deprecationMessages = this.ui.output.split('\n').filter(function(line) {
-          return line.indexOf('Putting the "includePolyfill" option in "babel" is deprecated') !== -1;
-        });
-
-        expect(deprecationMessages).to.have.lengthOf(0);
-      });
-    });
-
-    describe('with ember-cli-babel.includePolyfill = false', function() {
-      beforeEach(function() {
-        this.addon.parent.options = { 'ember-cli-babel': { includePolyfill: false } };
-      });
-
-      it('should return false', function() {
-        expect(this.addon._shouldIncludePolyfill()).to.be.false;
-      });
-
-      it('should not print deprecation messages', function() {
-        this.addon._shouldIncludePolyfill();
-
-        let deprecationMessages = this.ui.output.split('\n').filter(function(line) {
-          return line.indexOf('Putting the "includePolyfill" option in "babel" is deprecated') !== -1;
-        });
-
-        expect(deprecationMessages).to.have.lengthOf(0);
-      });
-    });
-  });
-
   describe('_shouldHandleTypeScript', function() {
     let project;
     let unlink;

package.json

@@ -52,7 +52,6 @@
     "@babel/plugin-transform-modules-amd": "^7.13.0",
     "@babel/plugin-transform-runtime": "^7.13.9",
     "@babel/plugin-transform-typescript": "^7.13.0",
-    "@babel/polyfill": "^7.11.5",
     "@babel/preset-env": "^7.16.5",
     "@babel/runtime": "7.12.18",
     "amd-name-resolver": "^1.3.1",
@@ -84,10 +83,11 @@
     "co": "^4.6.0",
     "common-tags": "^1.8.0",
     "console-ui": "^2.2.2",
+    "core-js": "^3.25.5",
     "core-object": "^3.1.5",
+    "ember-auto-import": "^2.4.2",
     "ember-cli": "~3.5.0",
     "ember-cli-dependency-checker": "^3.0.0",
-    "eslint": "^4.0.0",
     "ember-cli-htmlbars": "^3.0.0",
     "ember-cli-htmlbars-inline-precompile": "^1.0.3",
     "ember-cli-inject-live-reload": "^1.8.2",
@@ -97,14 +97,17 @@
     "ember-resolver": "^5.0.1",
     "ember-source": "~3.28.8",
     "ember-source-channel-url": "^1.1.0",
+    "eslint": "^4.0.0",
     "eslint-plugin-ember": "^5.2.0",
     "eslint-plugin-node": "^7.0.1",
     "lerna-changelog": "^0.8.0",
     "loader.js": "^4.7.0",
     "mocha": "^5.2.0",
+    "regenerator-runtime": "^0.13.9",
     "release-it": "^12.2.1",
     "release-it-lerna-changelog": "^1.0.3",
-    "resolve": "^1.8.1"
+    "resolve": "^1.8.1",
+    "webpack": "^5.74.0"
   },
   "engines": {
     "node": "14.* || 16.* || >= 18"

tests/dummy/app/app.js

@@ -1,3 +1,6 @@
+import 'core-js/stable';
+import 'regenerator-runtime/runtime';
+
 import Application from '@ember/application';
 import Resolver from './resolver';
 import loadInitializers from 'ember-load-initializers';