title: Cannot read property 'fragment' of undefined
body: <p>I'm trying to nest one svelte component in another svelte component.</p>
  
  <pre><code>
  //index.js
  import Parent from './Parent.svelte';
  
  new Parent({
    target: document.querySelector('main')
  })
  
  
  // Parent.svelte
  &lt;script&gt;
    import Child from "./Child.svelte";
  &lt;/script&gt;
  
  &lt;p&gt;parent component&lt;/p&gt;
  &lt;Child /&gt;
  
  
  // Child.svelte
  &lt;p&gt;child component&lt;/p&gt;
  
  </code></pre>
  
  <p>I expect Child.svelte to be nested in Parent.svelte, but I get this error message instead</p>
  
  <p><code>Cannot read property 'fragment' of undefined</code></p>
  
  <p>by the way: I´m using parcel with parcel-plugin-svelte</p>