From 7d788f7e195aa9c1172840501b116e55522cf56f Mon Sep 17 00:00:00 2001
From: Max Richter <max@max-richter.dev>
Date: Thu, 7 May 2026 21:10:31 +0200
Subject: [PATCH] feat: surface error when dropping wasm node

---
 app/src/lib/graph-interface/graph/drop.events.ts | 13 +++++++++++--
 1 file changed, 11 insertions(+), 2 deletions(-)

diff --git a/app/src/lib/graph-interface/graph/drop.events.ts b/app/src/lib/graph-interface/graph/drop.events.ts
index 02ca60a..a6c9896 100644
--- a/app/src/lib/graph-interface/graph/drop.events.ts
+++ b/app/src/lib/graph-interface/graph/drop.events.ts
@@ -1,3 +1,4 @@
+import { toast } from '@nodarium/ui';
 import { GraphSchema, type NodeId } from '@nodarium/types';
 import type { GraphManager } from '../graph-manager.svelte';
 import type { GraphState } from '../graph-state.svelte';
@@ -41,6 +42,9 @@ export class FileDropEventManager {
           props,
           position: pos
         });
+      }).catch((e) => {
+        toast(`Failed to load node: ${nodeId}`, 'error');
+        console.error(e);
       });
     } else if (event.dataTransfer.files.length) {
       const file = event.dataTransfer.files[0];
@@ -65,8 +69,13 @@ export class FileDropEventManager {
         reader.onload = (e) => {
           const buffer = e.target?.result as ArrayBuffer;
           if (buffer) {
-            const state = GraphSchema.parse(JSON.parse(buffer.toString()));
-            this.graph.load(state);
+            try {
+              const state = GraphSchema.parse(JSON.parse(buffer.toString()));
+              this.graph.load(state);
+            } catch (e) {
+              toast('Failed to load graph: invalid file', 'error');
+              console.error(e);
+            }
           }
         };
         reader.readAsText(file);