title: Accessing root Angular 2 injector instance globally
body: <p>How to access an instance of root Angular 2 injector globally (say, from browser console).</p>
  
  <p>In Angular 1 it was <code>angular.element(document).injector()</code>.</p>
  
  <p>It can be useful during testing and exploration, to use browser console to get injector to then access instances of different components, directives, services etc.</p>