feat(svelte): add getInternalNode and useInternalNode

packages/svelte/src/lib/components/NodeWrapper/NodeWrapper.svelte

@@ -141,7 +141,7 @@
       handleNodeSelection(id);
     }
 
-    dispatchNodeEvent('nodeclick', { node, event });
+    dispatchNodeEvent('nodeclick', { node: node.internals.userNode, event });
   }
 </script>
 

packages/svelte/src/lib/components/NodeWrapper/types.ts

@@ -1,4 +1,4 @@
-import type { Node } from '$lib/types';
+import type { InternalNode, Node } from '$lib/types';
 
 export type NodeWrapperProps = Pick<
   Node,
@@ -32,6 +32,6 @@ export type NodeWrapperProps = Pick<
   resizeObserver?: ResizeObserver | null;
   isParent?: boolean;
   zIndex: number;
-  node: Node;
+  node: InternalNode;
   initialized: boolean;
 };

packages/svelte/src/lib/hooks/useInternalNode.ts

@@ -0,0 +1,17 @@
+import { derived, type Readable } from 'svelte/store';
+
+import { useStore } from '$lib/store';
+import type { InternalNode } from '$lib/types';
+
+/**
+ * Hook to get an internal node by id.
+ *
+ * @public
+ * @param id - the node id
+ * @returns a readable with an internal node or undefined
+ */
+export function useInternalNode(id: string): Readable<InternalNode | undefined> {
+  const { nodeLookup, nodes } = useStore();
+
+  return derived([nodeLookup, nodes], ([nodeLookup]) => nodeLookup.get(id));
+}

packages/svelte/src/lib/hooks/useSvelteFlow.ts

@@ -18,7 +18,7 @@ import {
 } from '@xyflow/system';
 
 import { useStore } from '$lib/store';
-import type { Edge, FitViewOptions, Node } from '$lib/types';
+import type { Edge, FitViewOptions, InternalNode, Node } from '$lib/types';
 import { isNode } from '$lib/utils';
 
 /**
@@ -41,6 +41,13 @@ export function useSvelteFlow(): {
    * @param options.duration - optional duration. If set, a transition will be applied
    */
   zoomOut: ZoomInOut;
+  /**
+   * Returns an internal node by id.
+   *
+   * @param id - the node id
+   * @returns the node or undefined if no node was found
+   */
+  getInternalNode: (id: string) => InternalNode | undefined;
   /**
    * Returns a node by id.
    *
@@ -280,10 +287,13 @@ export function useSvelteFlow(): {
     }
   };
 
+  const getInternalNode = (id: string) => get(nodeLookup).get(id);
+
   return {
     zoomIn,
     zoomOut,
-    getNode: (id) => get(nodeLookup).get(id),
+    getInternalNode,
+    getNode: (id) => getInternalNode(id)?.internals.userNode,
     getNodes: (ids) => (ids === undefined ? get(nodes) : getElements(get(nodeLookup), ids)),
     getEdge: (id) => get(edgeLookup).get(id),
     getEdges: (ids) => (ids === undefined ? get(edges) : getElements(get(edgeLookup), ids)),
@@ -474,14 +484,17 @@ export function useSvelteFlow(): {
     viewport
   };
 }
-
+function getElements(lookup: Map<string, InternalNode>, ids: string[]): Node[];
-function getElements<EdgeOrNode>(lookup: Map<string, EdgeOrNode>, ids: string[]) {
+function getElements(lookup: Map<string, Edge>, ids: string[]): Edge[];
+// eslint-disable-next-line @typescript-eslint/no-explicit-any
+function getElements(lookup: Map<string, any>, ids: string[]): any[] {
   const result = [];
 
   for (const id of ids) {
-    const element = lookup.get(id);
+    const item = lookup.get(id);
 
-    if (element) {
+    if (item) {
+      const element = 'internals' in item ? item.internals?.userNode : item;
       result.push(element);
     }
   }