title: VueJS - how to watch a value in localStorage?
body: <p>I have a <code>nav</code> component that needs to only be shown when there is a token stored in <code>localStorage</code>. When that token is deleted from <code>localStorage</code> the <code>nav</code> component needs to notice that change and hide itself. </p>
  
  <p>What's the best way to approach this? </p>