title: How to define an array of strings in TypeScript interface?
body: <p>I have an object like this:</p>
  
  <pre><code>{
    "address": ["line1", "line2", "line3"]
  }
  
  </code></pre>
  
  <p>How to define <code>address</code> in an interface? the number of elements in the array is not fixed.</p>