App.svelte

<script lang="ts">
  import DialogSetComponent from "./DialogSetComponent.svelte";
  import { fetchDialogSet } from "./utils";

  const dialogSetPromise = fetchDialogSet();
</script>

<main>
  {#await dialogSetPromise then dialogSet}
    <DialogSetComponent {...dialogSet} />
  {:catch error}
    <h3>Oh no :(</h3>
    <p>
      We could not load that dialogSet that you specified in the url. Sorry.
    </p>
  {/await}
</main>