title: Angular 5 / Google Map - "ReferenceError: google is not defined"
body: <p>I use Angular 5 with one type : "@types/markerclustererplus": "2.1.28". This type installs @types/google-maps.</p>
  
  <p>I added script part in "index.html" file to load map.
  In my component, I can use google namespace.
  This works fine.</p>
  
  <p>However, when I run tests... it fails!
  I got "ReferenceError: google is not defined"</p>
  
  <p>I tried so many things... If you have any idea, I take it!</p>
  
  <p>Thank you.</p>