title: npm run dev --host network: not exposed
body: <p>I want to expose my svelte app on LAN using the <code>npm run dev --host</code> command but it shows:</p>
  <pre><code>&gt; frontend@0.0.1 dev
  &gt; svelte-kit dev
  
  
    SvelteKit v1.0.0-next.295
  
    local:   http://localhost:3000
    network: not exposed
  
    Use --host to expose server to other devices on this network
  
  
  </code></pre>