title: error TS2339 : Property '' does not exist on type '' Angular2
body: <p>error TS2339: Property 'message' does not exist on type 'EmailData[]'</p>
  
  <p>It's my code. Help me!</p>
  
  <pre><code>interface EmailData {
      message: string
  }
  function ParseJsonToObject(data:any){
    let obj:Array&lt;EmailData&gt;;
    for(var key in data.json()){ // {message: "Hello!"}
      obj[key] = JSON.stringify(data.json()[key]);
    }
    console.log("Data Check :: "+obj.message);
    return obj;
  }
  </code></pre>