title: Why I got an error type assertion on object literals is forbidden, use a type annotation instead.tslint(no-object-literal-type-assertion)?
body: <p>I have code in TS</p>
  
  <pre><code>interface Context {
      out: vscode.OutputChannel,
      myPorts: number[]
  }
  
  const outputChannel = vscode.window.createOutputChannel('my-run');
  
      const ctx = {
          out: OutputChannel,
          myPorts: []
      } as Context;
  </code></pre>
  
  <p>I got error Type assertion on object literals is forbidden, use a type annotation instead.tslint(no-object-literal-type-assertion</p>