title: Evaluating constant when creating dictionary keys
body: <pre><code>const myKey: string = 'something'
  
  const myDict: { [id: string]: string } = {
    myKey: 'some value',
  }
  </code></pre>
  <p>and I would like the dictionary to look like:</p>
  <pre><code>{ 'something' : 'some value' }
  
  </code></pre>
  <p>but the actual result is:</p>
  <pre><code>{ myKey : 'some value' }
  </code></pre>
  <p>How can I force the constant to be replaced by its value when creating the dictionary?</p>