title: Value at position 0 while updating from Angular 8 to 9
body: <p>I was updating my project from Angular 8 to 9 when after following the update guide (+ running npm update) on update.angular.io and trying to compile the website using <code>ng serve</code> I get the following error:</p>
  
  <pre><code>ERROR in Failed to compile entry-point angular-font-awesome (es2015 as esm2015) due to compilation errors:
  node_modules/angular-font-awesome/dist/angular-font-awesome.js:3968:26 - error NG1010: Value at position 0 in the NgModule.imports of AngularFontAwesomeModule is not a reference: [object Object]
  
  3968                 imports: [CommonModule],
  
  </code></pre>
  
  <p>Any help is appreciated.</p>
  
  <p><strong>UPDATE</strong></p>
  
  <p>My <code>ng version</code> output:</p>
  
  <pre><code>   / \   _ __   __ _ _   _| | __ _ _ __     / ___| |   |_ _|
    / △ \ | '_ \ / _` | | | | |/ _` | '__|   | |   | |    | |
    / ___ \| | | | (_| | |_| | | (_| | |      | |___| |___ | |
   /_/   \_\_| |_|\__, |\__,_|_|\__,_|_|       \____|_____|___|
                  |___/
  
  
  Angular CLI: 9.0.2
  Node: 12.13.1
  OS: win32 x64
  
  Angular: 9.0.1
  ... animations, common, compiler, compiler-cli, core, forms
  ... language-service, platform-browser, platform-browser-dynamic
  ... router
  Ivy Workspace: Yes
  
  Package                           Version
  -----------------------------------------------------------
  @angular-devkit/architect         0.900.2
  @angular-devkit/build-angular     0.900.2
  @angular-devkit/build-optimizer   0.900.2
  @angular-devkit/build-webpack     0.900.2
  @angular-devkit/core              9.0.2
  @angular-devkit/schematics        9.0.2
  @angular/cdk                      9.0.0
  @angular/cli                      9.0.2
  @angular/material                 9.0.0
  @ngtools/webpack                  9.0.2
  @schematics/angular               9.0.2
  @schematics/update                0.900.2
  rxjs                              6.5.4
  typescript                        3.7.5
  webpack                           4.41.2
  
  </code></pre>
  
  <p>My package.json:</p>
  
  <pre><code>{
    "name": "avior",
    "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": "~9.0.1",
      "@angular/cdk": "~9.0.0",
      "@angular/common": "~9.0.1",
      "@angular/compiler": "^9.0.1",
      "@angular/core": "~9.0.1",
      "@angular/forms": "~9.0.1",
      "@angular/material": "^9.0.0",
      "@angular/platform-browser": "~9.0.1",
      "@angular/platform-browser-dynamic": "^9.0.1",
      "@angular/router": "~9.0.1",
      "@fortawesome/fontawesome": "^1.1.8",
      "@ngtools/webpack": "^9.0.2",
      "angular-font-awesome": "^3.1.2",
      "angular-tree-component": "^8.5.4",
      "bootstrap": "^4.4.1",
      "chromedriver": "^79.0.3",
      "core-js": "^2.6.11",
      "font-awesome": "^4.7.0",
      "fontawesome": "^5.6.3",
      "gitignore": "^0.6.0",
      "jquery": "^3.4.1",
      "moment": "^2.24.0",
      "popper.js": "^1.16.1",
      "rxjs": "^6.5.4",
      "tslib": "^1.10.0",
      "webdriver-manager": "^12.1.7",
      "zone.js": "~0.10.2"
    },
    "devDependencies": {
      "@angular-devkit/build-angular": "~0.900.2",
      "@angular/cli": "^9.0.2",
      "@angular/compiler-cli": "^9.0.1",
      "@angular/language-service": "~9.0.1",
      "@types/jasmine": "~2.8.8",
      "@types/jasminewd2": "^2.0.8",
      "@types/node": "^12.11.1",
      "angular-ide": "^0.9.73",
      "codelyzer": "^5.1.2",
      "jasmine-core": "~2.99.1",
      "jasmine-spec-reporter": "~4.2.1",
      "karma": "~4.0.0",
      "karma-chrome-launcher": "~2.2.0",
      "karma-coverage-istanbul-reporter": "~2.0.1",
      "karma-jasmine": "~1.1.2",
      "karma-jasmine-html-reporter": "^0.2.2",
      "protractor": "^5.4.3",
      "ts-node": "~7.0.0",
      "tslint": "~5.11.0",
      "typescript": "^3.7.5"
    }
  }
  
  </code></pre>
  
  <p>My tsconfig.ts:</p>
  
  <pre><code>{
    "compileOnSave": false,
    "compilerOptions": {
      "baseUrl": "./",
      "downlevelIteration": true,
      "outDir": "./dist/out-tsc",
      "sourceMap": true,
      "declaration": false,
      "module": "es2015",
      "moduleResolution": "node",
      "emitDecoratorMetadata": true,
      "experimentalDecorators": true,
      "importHelpers": true,
      "target": "es2015",
      "typeRoots": [
        "node_modules/@types"
      ],
      "lib": [
        "es2018",
        "dom"
      ]
    }
  }
  
  </code></pre>
  
  <p><strong>UPDATE 2</strong>
  After uninstalling the <code>angular-font-awesome</code> package I only get one error with an Angular plugin:</p>
  
  <pre><code>ERROR in Failed to compile entry-point angular-tree-component (module as esm5) due to compilation errors:
  node_modules/mobx-angular/dist/mobx-angular.d.ts:8:22 - error NG6002: Appears in the NgModule.imports of TreeModule, but could not be resolved to an NgModule class
  
  8 export declare class MobxAngularModule {
  </code></pre>