title: Typescript return value wrapped in curly braces?
body: <p>In the following code block <code>heros</code> is wrapped with curly braces:</p>
  
  <pre><code>  export class InMemoryDataService implements InMemoryDbService {
        createDb() {
          let heroes = [
            {id: 11, name: 'Mr. Nice'},
            {id: 12, name: 'Narco'},
            ...
          ];
          return {heroes};
        }
      }
  </code></pre>
  
  <p>In particular reason for this?</p>