Merge pull request #3723 from xyflow/viewport-portal

Added seperate portal to put dom elements inside the flow

packages/svelte/src/lib/components/ViewportPortal/ViewportPortal.svelte

@@ -0,0 +1,12 @@
+<script lang="ts">
+  import portal from '$lib/actions/portal';
+  import { useStore } from '$lib/store';
+
+  type $$Props = {};
+
+  const { domNode } = useStore();
+</script>
+
+<div use:portal={{ target: '.svelte-flow__viewport-portal', domNode: $domNode }}>
+  <slot />
+</div>

packages/svelte/src/lib/components/ViewportPortal/index.ts

@@ -0,0 +1 @@
+export { default as ViewportPortal } from './ViewportPortal.svelte';