title: TypeScript A computed property name in a type literal must directly refer to a built-in symbol
body: <blockquote>
    <p>ERROR in ...component.ts (..,..): A computed property name in a type
    literal must directly refer to a built- in symbol. ...: Cannot find
    name 'any'.</p>
  </blockquote>
  
  <p>I'm looking forward an object which contains strings which have other string, i.e:</p>
  
  <pre><code>{ abc: 'xyz' }
  </code></pre>
  
  <p>What I did:</p>
  
  <pre><code>foo: { [string]: string };
  </code></pre>