title: Angular 9 - Istanbul test coverage report being generated empty
body: <p>I'm getting an empty report, it's listing the files but it's not filling up the percentages...
  Any idea on what can be causing it?  </p>
  
  <p>Error message:</p>
  
  <p><strong><em>Handlebars: Access has been denied to resolve the property "statements" because it is not an "own property" of its parent.</em></strong></p>
  
  <p>My package.json file:</p>
  
  <pre><code>"dependencies": {
      "@angular/animations": "^9.0.4",
      "@angular/cdk": "^9.1.0",
      "@angular/common": "^9.0.4",
      "@angular/compiler": "^9.0.4",
      "@angular/core": "^9.0.4",
      "@angular/forms": "^9.0.4",
      "@angular/platform-browser": "^9.0.4",
      "@angular/platform-browser-dynamic": "^9.0.4",
      "@angular/router": "^9.0.4",
      "@fullcalendar/core": "^4.4.0",
      "chart.js": "^2.9.2",
      "classlist.js": "^1.1.20150312",
      "core-js": "^2.5.7",
      "font-awesome": "^4.7.0",
      "karma-coverage": "^1.1.1",
      "karma-phantomjs-launcher": "^1.0.4",
      "moment-timezone": "^0.5.17",
      "ngx-clipboard": "^12.2.1",
      "primeicons": "^2.0.0",
      "primeng": "^9.0.0",
      "quill": "^1.3.7",
      "rxjs": "^6.5.3",
      "tslib": "^1.10.0",
      "web-animations-js": "^2.3.2",
      "xlsx": "^0.15.1",
      "zone.js": "~0.10.2"
    },
    "devDependencies": {
      "@angular-devkit/build-angular": "~0.900.4",
      "@angular/cli": "^9.0.4",
      "@angular/compiler-cli": "^9.0.4",
      "@angular/language-service": "^9.0.4",
      "@types/jasmine": "~2.8.3",
      "@types/jasminewd2": "~2.0.2",
      "@types/node": "^12.11.1",
      "jasmine-core": "~2.8.0",
      "jasmine-spec-reporter": "~4.2.1",
      "karma": "^4.4.1",
      "karma-chrome-launcher": "~2.2.0",
      "karma-coverage-istanbul-reporter": "^1.4.3",
      "karma-jasmine": "~1.1.0",
      "karma-jasmine-html-reporter": "^0.2.2",
      "protractor": "~5.4.1",
      "ts-node": "~7.0.1",
      "tslint": "~5.11.0",
      "typescript": "~3.7.5"
  </code></pre>
  
  <p>And here are the results in coverage/index.html file</p>
  
  <p><a href="https://i.stack.imgur.com/BrFyV.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/BrFyV.png" alt="Coverage results"></a></p>