Angular 9 Application ne s'exécute pas sur IE11

Question

Notre équipe a créé un nouveau projet angular 9 et cela fonctionne parfaitement sur Google Chrome et Firefox mais sur IE11, je ne peux rien voir. J'ai tout essayé sur Internet suivi tous les blogs liés à cela, mais je suis incapable d'atteindre l'objectif.

Voici mon tsconfig.json

{
  "compileOnSave": false,
  "compilerOptions": {
    "baseUrl": "./",
    "outDir": "./dist/out-tsc",
    "sourceMap": true,
    "declaration": false,
    "downlevelIteration": true,
    "experimentalDecorators": true,
    "allowSyntheticDefaultImports": true,
    "module": "esnext",
    "moduleResolution": "node",
    "importHelpers": true,
    "target": "es2015",
    "lib": [
      "es2018",
      "dom"
    ],
    "paths": {
      "@app/*": ["src/app/*"],
      "@modules/*": ["src/app/modules/*"],
      "@services/*": ["src/app/services/*"],
      "@shared/*": ["src/app/shared/*"],
      "@env/*": ["src/environments/*"],
      "@mocks/*": ["mocks/*"],
      "@models/*": ["src/app/models/*"]
    }
  },
  "angularCompilerOptions": {
    "fullTemplateTypeCheck": true,
    "strictInjectionParameters": true
  }
}

tsconfig-es5.app.json

{
    "extends": "./tsconfig.app.json",
    "compilerOptions": {
        "target": "es5" 
     }
   }

paquet.json

{
  "name": "connect-ui",
  "version": "0.0.0",
  "scripts": {
    "ng": "ng",
    "start": "ng serve --port 6574",
    "start:dev": "concurrently \"npm run mocks\" \"npm start\"",
    "mocks": "json-server --watch db.json --routes db.routes.json --port 6575",
    "build": "ng build --base-href /ng/",
    "test": "ng test",
    "lint": "ng lint",
    "e2e": "ng e2e",
    "storybook": "start-storybook -p 6576",
    "build-storybook": "build-storybook"
  },
  "private": true,
  "dependencies": {
    "@angular/animations": "^9.1.9",
    "@angular/common": "~9.1.0",
    "@angular/compiler": "~9.1.0",
    "@angular/core": "~9.1.0",
    "@angular/forms": "~9.1.0",
    "@angular/localize": "~9.1.0",
    "@angular/platform-browser": "~9.1.0",
    "@angular/platform-browser-dynamic": "~9.1.0",
    "@angular/router": "~9.1.0",
    "@fortawesome/angular-fontawesome": "^0.6.1",
    "@fortawesome/fontawesome-svg-core": "^1.2.28",
    "@fortawesome/free-brands-svg-icons": "^5.13.0",
    "@fortawesome/free-regular-svg-icons": "^5.13.0",
    "@ng-bootstrap/ng-bootstrap": "^6.1.0",
    "@ngx-gallery/core": "^5.0.0-beta.0",
    "@ngx-translate/core": "^12.1.2",
    "@ngx-translate/http-loader": "^4.0.0",
    "@types/zingchart": "^2.8.0",
    "angular-gridster2": "^9.1.0",
    "angular2-uuid": "^1.1.1",
    "bootstrap": "^4.4.0",
    "classlist.js": "^1.1.20150312",
    "concurrently": "^5.2.0",
    "core-js": "^2.5.5",
    "flatpickr": "^4.6.3",
    "json-server": "^0.16.1",
    "moment": "^2.26.0",
    "ng2-flatpickr": "^9.0.0",
    "normalize.css": "^8.0.1",
    "resize-observer-polyfill": "^1.5.1",
    "rxjs": "~6.5.4",
    "shortcut-buttons-flatpickr": "^0.3.0",
    "tslib": "^1.10.0",
    "web-animations-js": "^2.3.2",
    "zingchart": "^2.9.0",
    "zingchart-angular": "0.0.6",
    "zinggrid": "^1.2.0",
    "zone.js": "~0.10.2"
  },
  "devDependencies": {
    "@angular-devkit/build-angular": "^0.901.7",
    "@angular/cli": "~9.1.0",
    "@angular/compiler-cli": "~9.1.0",
    "@angular/language-service": "~9.1.0",
    "@babel/core": "^7.10.3",
    "@storybook/addon-actions": "^5.3.19",
    "@storybook/addon-docs": "^5.3.19",
    "@storybook/addon-knobs": "^5.3.19",
    "@storybook/addon-links": "^5.3.19",
    "@storybook/addon-notes": "^5.3.19",
    "@storybook/addons": "^5.3.19",
    "@storybook/angular": "^5.3.19",
    "@types/jasmine": "~3.5.0",
    "@types/jasminewd2": "~2.0.3",
    "babel-loader": "^8.1.0",
    "codelyzer": "^5.1.2",
    "ember-cli-cors": "0.0.2",
    "jasmine-core": "~3.5.0",
    "jasmine-spec-reporter": "~4.2.1",
    "karma": "~4.4.1",
    "karma-chrome-launcher": "~3.1.0",
    "karma-coverage-istanbul-reporter": "~2.1.0",
    "karma-jasmine": "~3.0.1",
    "karma-jasmine-html-reporter": "^1.4.2",
    "protractor": "~5.4.3",
    "ts-node": "~8.3.0",
    "tslint": "~6.1.0",
    "TypeScript": "~3.8.3"
  }
}

J'ai suivi ce lien https://medium.com/better-programming/how-to-fix-your-angular-app-qus-its-not-working-in-ie11-eb24cb6d992

De plus, j'ai vu pour d'autres personnes dans les messages qu'ils avaient eu une erreur dans leur console d'IE11, mais il n'y a aucune erreur dans ma fenêtre de console d'IE11. S'il vous plaît vérifier cette capture d'écran de IE11.

polyfills.ts

/***************************************************************************************************
 * Load `$localize` onto the global scope - used if i18n tags appear in Angular templates.
 */
import '@angular/localize/init';
/**
 * This file includes polyfills needed by Angular and is loaded before the app.
 * You can add your own extra polyfills to this file.
 *
 * This file is divided into 2 sections:
 *   1. Browser polyfills. These are applied before loading ZoneJS and are sorted by browsers.
 *   2. Application imports. Files imported after ZoneJS that should be loaded before your main
 *      file.
 *
 * The current setup is for so-called "evergreen" browsers; the last versions of browsers that
 * automatically update themselves. This includes Safari >= 10, Chrome >= 55 (including Opera),
 * Edge >= 13 on the desktop, and iOS 10 and Chrome on mobile.
 *
 * Learn more in https://angular.io/guide/browser-support
 */

/***************************************************************************************************
 * BROWSER POLYFILLS
 */






/** IE10 and IE11 requires the following for NgClass support on SVG elements */
 import 'classlist.js';  //Run `npm install --save classlist.js`.


 import 'core-js/es6/reflect';



/**
 * Web Animations `@angular/platform-browser/animations`
 * Only required if AnimationBuilder is used within the application and using IE/Edge or Safari.
 * Standard animation support in Angular DOES NOT require any polyfills (as of Angular 6.0).
 */
import 'web-animations-js';  // Run `npm install --save web-animations-js`.

/**
 * By default, zone.js will patch all possible macroTask and DomEvents
 * user can disable parts of macroTask/DomEvents patch by setting following flags
 * because those flags need to be set before `zone.js` being loaded, and webpack
 * will put import in the top of bundle, so user need to create a separate file
 * in this directory (for example: zone-flags.ts), and put the following flags
 * into that file, and then add the following code before importing zone.js.
 * import './zone-flags';
 *
 * The flags allowed in zone-flags.ts are listed here.
 *
 * The following flags will work for all browsers.
 *
 * (window as any).__Zone_disable_requestAnimationFrame = true; // disable patch requestAnimationFrame
 * (window as any).__Zone_disable_on_property = true; // disable patch onProperty such as onclick
 * (window as any).__zone_symbol__UNPATCHED_EVENTS = ['scroll', 'mousemove']; // disable patch specified eventNames
 *
 *  in IE/Edge developer tools, the addEventListener will also be wrapped by zone.js
 *  with the following flag, it will bypass `zone.js` patch for IE/Edge
 *
 *  (window as any).__Zone_enable_cross_context_check = true;
 *
 */

/***************************************************************************************************
 * Zone JS is required by default for Angular itself.
 */
import 'zone.js/dist/zone';  // Included with Angular CLI.


/***************************************************************************************************
 * APPLICATION IMPORTS
 */

---------------ÉDITER--------------------

Answer 1

Veuillez supprimer ci-dessous la ligne de votre fichier Polyfills.js.

/ ******************************************* **************************************************** *****

• Charge $localize sur la portée globale - utilisée si des balises I18N apparaissent dans Angular. /Importation '@ Angular/Localisez/init'; *

Et cela fonctionnera également bien dans le navigateur IE11. Comme je suis passé par une documentation, il est dit que, la localisation n'est pas compatible avec l'ES5.