html component to do dom purify.

webapp/src/components/Html.svelte

@@ -0,0 +1,15 @@
+<script>
+  import DOMPurify from "dompurify";
+  import { onMount } from "svelte";
+
+  export let html;
+  let purify;
+
+  onMount(() => {
+    purify = (html) => DOMPurify.sanitize(html);
+  });
+</script>
+
+{#if purify}
+  {@html html}
+{:else}{html}{/if}