title: issue on angular production build on angular 9 migrate
body: <blockquote>
    <p>hello Everyone, i am getting issue on angular after migration, I have
    migrated the project to angular 9 from angular 8 . the angular with ng
    server --prod works in version 8 but on version 9 i am getting error .
    i have checked with ng build --prod and ng serve --prod. As the new
    angular 9 has IVY compiler for AOT compilation so i have imported
    angular/compiler in main.ts, also the bootstrap is injecting with
    platformBrowserDynamic
    as i can see angular 8/9 uses jit compilation for ng serve on development mode so project is running on jit but as angular is using aot comilation for production my codebase gets errors</p>
  </blockquote>
  
  <p><strong>pollyfills.ts</strong>
      `
      import '@angular/compiler';
      import '@angular/localize/init';
      import 'core-js/es/array';
      import 'zone.js/dist/zone';</p>
  
  <p>`</p>
  
  <pre><code>**main.ts**
  
  `
  
  import '@angular/compiler';
      import { enableProdMode } from '@angular/core';
      import { platformBrowserDynamic } from '@angular/platform-browser-dynamic';
  
      import { AppModule } from './app/app.module';
      import { environment } from './environments/environment';
  
      if (environment.production) {
        enableProdMode();
      }
  
      platformBrowserDynamic().bootstrapModule(AppModule);
  `
  
  **package.json**
  `{
    "name": "project",
    "version": "0.0.0",
    "scripts": {
      "ng": "ng",
      "start": "ng serve",
      "build": "ng build",
      "test": "ng test",
      "lint": "ng lint",
      "e2e": "ng e2e"
    },
    "private": true,
    "dependencies": {
      "@angular/animations": "^9.0.5",
      "@angular/cdk": "^9.0.0",
      "@angular/common": "^9.0.5",
      "@angular/compiler": "^9.0.5",
      "@angular/core": "^9.0.5",
      "@angular/forms": "^9.0.5",
      "@angular/http": "^7.2.16",
      "@angular/localize": "^9.0.5",
      "@angular/material": "^7.3.2",
      "@angular/platform-browser": "^9.0.5",
      "@angular/platform-browser-dynamic": "^9.0.5",
      "@angular/router": "^9.0.5",
      "@ng-bootstrap/ng-bootstrap": "^6.0.0",
      "@ngx-translate/core": "^12.1.2",
      "@ngx-translate/http-loader": "^4.0.0",
      "@sentry/browser": "^5.13.2",
      "angular-file-uploader": "^5.0.2",
      "angular-ng-autocomplete": "^2.0.1",
      "angular2-signaturepad": "^2.11.0",
      "core-js": "^3.6.4",
      "jquery": "^3.4.1",
      "moment": "^2.24.0",
      "ng2-haversine": "^0.1.1",
      "ng2-uploader": "^2.0.0",
      "ngx-spinner": "^8.1.0",
      "ngx-ui-loader": "^8.0.0",
      "rxjs": "^6.5.4",
      "zone.js": "~0.10.2"
    },
    "devDependencies": {
      "@angular-devkit/build-angular": "~0.900.5",
      "@angular/cli": "~9.0.5",
      "@angular/compiler-cli": "^9.0.5",
      "@angular/language-service": "^9.0.5",
      "@types/jasmine": "~3.5.7",
      "@types/jasminewd2": "~2.0.8",
      "@types/jquery": "^3.3.33",
      "@types/node": "~13.7.7",
      "codelyzer": "~5.2.1",
      "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": "~2.1.1",
      "karma-jasmine": "~3.1.1",
      "karma-jasmine-html-reporter": "^1.5.2",
      "protractor": "^5.4.3",
      "ts-node": "~8.6.2",
      "tslint": "~6.0.0",
      "typescript": "^3.6.4"
    }
  }
  `
  **angular.json**
  `{
      "$schema": "./node_modules/@angular/cli/lib/config/schema.json",
      "version": 1,
      "newProjectRoot": "projects",
      "projects": {
        "project": {
          "root": "",
          "sourceRoot": "src",
          "projectType": "application",
          "prefix": "app",
          "schematics": {},
          "architect": {
            "build": {
              "builder": "@angular-devkit/build-angular:browser",
              "options": {
                "outputPath": "dist/project",
                "index": "src/index.html",
                "main": "src/main.ts",
                "polyfills": "src/polyfills.ts",
                "tsConfig": "src/tsconfig.app.json",
                "assets": [
                  "src/favicon.ico",
                  "src/assets"
                ],
                "styles": [
                  "src/styles.css"
                ],
                "scripts": []
              },
              "configurations": {
                "production": {
                  "fileReplacements": [
                    {
                      "replace": "src/environments/environment.ts",
                      "with": "src/environments/environment.prod.ts"
                    }
                  ],
                  "optimization": true,
                  "outputHashing": "all",
                  "sourceMap": false,
                  "extractCss": true,
                  "namedChunks": false,
                  "aot": true,
                  "extractLicenses": true,
                  "vendorChunk": false,
                  "buildOptimizer": true
                }
              }
            },
            "serve": {
              "builder": "@angular-devkit/build-angular:dev-server",
              "options": {
                "browserTarget": "project:build"
              },
              "configurations": {
                "production": {
                  "browserTarget": "project:build:production"
                }
              }
            },
            "extract-i18n": {
              "builder": "@angular-devkit/build-angular:extract-i18n",
              "options": {
                "browserTarget": "project:build"
              }
            },
            "test": {
              "builder": "@angular-devkit/build-angular:karma",
              "options": {
                "main": "src/test.ts",
                "polyfills": "src/polyfills.ts",
                "tsConfig": "src/tsconfig.spec.json",
                "karmaConfig": "src/karma.conf.js",
                "styles": [
                  "src/styles.css"
                ],
                "scripts": [],
                "assets": [
                  "src/favicon.ico",
                  "src/assets"
                ]
              }
            },
            "lint": {
              "builder": "@angular-devkit/build-angular:tslint",
              "options": {
                "tsConfig": [
                  "src/tsconfig.app.json",
                  "src/tsconfig.spec.json"
                ],
                "exclude": [
                  "**/node_modules/**"
                ]
              }
            }
          }
        },
        "project-e2e": {
          "root": "e2e/",
          "projectType": "application",
          "architect": {
            "e2e": {
              "builder": "@angular-devkit/build-angular:protractor",
              "options": {
                "protractorConfig": "e2e/protractor.conf.js",
                "devServerTarget": "project:serve"
              },
              "configurations": {
                "production": {
                  "devServerTarget": "project:serve:production"
                }
              }
            },
            "lint": {
              "builder": "@angular-devkit/build-angular:tslint",
              "options": {
                "tsConfig": "e2e/tsconfig.e2e.json",
                "exclude": [
                  "**/node_modules/**"
                ]
              }
            }
          }
        }
      },
      "defaultProject": "project",
      "cli": {
        "analytics": "87b84483-668a-45d2-a5fa-0b6badd7e97e"
      }
    }
  </code></pre>
  
  <p>`</p>
  
  <p><strong>tsconfig.json</strong>
  `</p>
  
  <pre><code>{
    "compileOnSave": false,
    "compilerOptions": {
      "baseUrl": "./",
      "outDir": "./dist/out-tsc",
      "sourceMap": true,
      "declaration": false,
      "module": "es2015",
      "moduleResolution": "node",
      "emitDecoratorMetadata": true,
      "experimentalDecorators": true,
      "target": "es5",
      "typeRoots": [
        "node_modules/@types"
      ],
      "lib": [
        "es2017",
        "dom"
      ]
    },
    "angularCompilerOptions": {
      "enableIvy": true
    }
  }
  </code></pre>
  
  <p>`</p>
  
  <p><strong>i am getting issue on chrome console the following on ng serve --prod or ng serve --prod --aot=true .</strong>
  `</p>
  
  <pre><code>polyfills.9b85908313a7766a001a.js:1.
   Unhandled Promise rejection: Angular JIT compilation failed: '@angular/compiler' not loaded!
    - JIT compilation is discouraged for production use-cases! Consider AOT mode instead.
    - Did you bootstrap using '@angular/platform-browser-dynamic' or '@angular/platform-server'?
    - Alternatively provide the compiler with 'import "@angular/compiler";' before bootstrapping. ; Zone: &lt;root&gt; ; Task: Promise.then ; Value: Error: Angular JIT compilation failed: '@angular/compiler' not loaded!
    - JIT compilation is discouraged for production use-cases! Consider AOT mode instead.
    - Did you bootstrap using '@angular/platform-browser-dynamic' or '@angular/platform-server'?
    - Alternatively provide the compiler with 'import "@angular/compiler";' before bootstrapping.
      at Q (main.a41bfed0d971f96f8f03.js:1)
      at Function.get (main.a41bfed0d971f96f8f03.js:1)
      at $e (main.a41bfed0d971f96f8f03.js:1)
      at Qa (main.a41bfed0d971f96f8f03.js:1)
      at main.a41bfed0d971f96f8f03.js:1
      at e.processProvider (main.a41bfed0d971f96f8f03.js:1)
      at main.a41bfed0d971f96f8f03.js:1
      at main.a41bfed0d971f96f8f03.js:1
      at Array.forEach (&lt;anonymous&gt;)
      at Se (main.a41bfed0d971f96f8f03.js:1) Error: Angular JIT compilation failed: '@angular/compiler' not loaded!
    - JIT compilation is discouraged for production use-cases! Consider AOT mode instead.
    - Did you bootstrap using '@angular/platform-browser-dynamic' or '@angular/platform-server'?
    - Alternatively provide the compiler with 'import "@angular/compiler";' before bootstrapping.
      at Q (http://localhost:4200/main.a41bfed0d971f96f8f03.js:1:138535)
      at Function.get (http://localhost:4200/main.a41bfed0d971f96f8f03.js:1:198740)
      at $e (http://localhost:4200/main.a41bfed0d971f96f8f03.js:1:144912)
      at Qa (http://localhost:4200/main.a41bfed0d971f96f8f03.js:1:204231)
      at http://localhost:4200/main.a41bfed0d971f96f8f03.js:1:202451
      at e.processProvider (http://localhost:4200/main.a41bfed0d971f96f8f03.js:1:202465)
      at http://localhost:4200/main.a41bfed0d971f96f8f03.js:1:202249
      at http://localhost:4200/main.a41bfed0d971f96f8f03.js:1:141452
      at Array.forEach (&lt;anonymous&gt;)
      at Se (http://localhost:4200/main.a41bfed0d971f96f8f03.js:1:141399)
  </code></pre>
  
  <p>`</p>
  
  <blockquote>
    <p>when i use ng serve it serve on my localhost without issue, but when i
    add the prod keyword or trying to make a build with ng build --prod .
    the dist folder  does not work on my dev server and i am getting the
    above errors.</p>
  </blockquote>