title: Property 'getReadableSchedule' is missing in type
body: <p>How do I populate a typed array where the type being populated has a function (getReadableSchedule)? If I remove the function this works. Is this failing because of the way i'm assigning the the array elements?</p>
  
  <blockquote>
    <p>ERROR in src/app/mock-extracts.ts(3,14): error TS2322: Property 'getReadableSchedule' is missing in type '{ id: number; name: string; description: string; client: string; vendor: string; extractType: str...'.</p>
  </blockquote>
  
  <pre class="lang-js prettyprint-override"><code>export class Extract {
    id: number;
    name: string;
    description: string;
    client: string;
    vendor: string;
    extractType: string;
    path: string;
    sentDate: string;
    sentTo: string;
    lastRun: string;
    nextRun: string;
    schedule: string;
  
    getReadableSchedule(): string {
      return "&lt;return readable cronjob schedule&gt;";
    }
  }
  </code></pre>
  
  
  
  <pre class="lang-js prettyprint-override"><code>import { Extract } from "./extract";
  
  export const EXTRACTS: Extract[] = [
    {
      id: 1,
      name: "Find Barb",
      description: "Find Barb in the unspide down.",
      client: "Tower, Inc",
      vendor: "Vendy",
      extractType: "Normal",
      sentDate: "Today",
      path: "//outside",
      sentTo: "",
      lastRun: "",
      nextRun: "",
      schedule: ""
    },
    {
      id: 2,
      name: "Rescue Will",
      description: "Give Will a hair cut.",
      client: "Tower, Inc",
      vendor: "Vendy",
      extractType: "Normal",
      sentDate: "Today",
      path: "//outside",
      sentTo: "",
      lastRun: "",
      nextRun: "",
      schedule: ""
    },
    {
      id: 3,
      name: "Sooth Harry's Scar",
      description: "Put Robitussin on Harry's scar.",
      client: "Tower, Inc",
      vendor: "Turkish Barn, LLC",
      extractType: "Normal",
      sentDate: "Today",
      path: "//outside",
      sentTo: "",
      lastRun: "",
      nextRun: "",
      schedule: ""
    }
  ];
  </code></pre>