title: 'const' initializer in an ambient context must be a string or numeric literal
body: <p>I have a namespace in typescript that looks like this :</p>
  <pre><code>export declare namespace MyNamespace {
      const myFunc = (a:number) =&gt; 3;
  }
  </code></pre>
  <p>My compiler complains about the function that :</p>
  <pre><code>TS1254: A 'const' initializer in an ambient context must be a string or numeric literal or literal enum reference
  </code></pre>
  <p>What is this error trying to tell me? I cannot have a function as a const within a namespace?</p>