title: How to store data locally in React Native that is not a string
body: <p>I am looking for a way to store objects and arrays of data locally in React Native. How can this be done? Looking at the api for AsyncStorage:</p>
  
  <p>static <strong>setItem</strong>(key: string, value: string, callback?: ?(error: ?Error) => void)<br>
    <em>Sets value for key and calls callback on completion, along with an Error if there is any. Returns a Promise object.</em></p>
  
  <p>How do I store objects and arrays locally in React Native?</p>