Merge pull request #3681 from xyflow/svelte-on-edge-creation

feat(svelte) added onedgecreate function

packages/system/src/utils/edges/general.ts

@@ -112,7 +112,7 @@ export function isEdgeVisible({ sourceNode, targetNode, width, height, transform
 }
 
 const getEdgeId = ({ source, sourceHandle, target, targetHandle }: Connection | EdgeBase): string =>
-  `xyflow__edge-${source}${sourceHandle || ''}-${target}${targetHandle || ''}`;
+  `xy-edge__${source}${sourceHandle || ''}-${target}${targetHandle || ''}`;
 
 const connectionExists = (edge: EdgeBase, edges: EdgeBase[]) => {
   return edges.some(
@@ -148,6 +148,14 @@ export const addEdgeBase = <EdgeType extends EdgeBase>(
     return edges;
   }
 
+  if (edge.sourceHandle === null) {
+    delete edge.sourceHandle;
+  }
+
+  if (edge.targetHandle === null) {
+    delete edge.targetHandle;
+  }
+
   return edges.concat(edge);
 };