title: How to store large files to web local storage?
body: <p>I am developing ionic 2 app that downloads files from online servers, I want to store those files to the local storage (or caches I don't know).</p>
  
  <p>I know that I can store data to local storage using:</p>
  
  <pre><code>localStorage.setItem('key','value');
  </code></pre>
  
  <p>But if it is file and specially a large one, how to store it in local storage?</p>
  
  <p>Note: I am using TypeScript.</p>