[Svelte 3] Render HTML directly into a component in Svelte 3

Disclaimer: please use this feature carefully.

<script>
  let stringToRender = "<h1>Hello egghead</h1>";
</script>

<style>
  textarea {
    width: 100%;
    height: 12rem;
  }
</style>

<textarea bind:value={stringToRender} />

<div>
  {@html stringToRender}
</div>