From 1aba15bbca353eb4959dcd7999e00b3d4077117b Mon Sep 17 00:00:00 2001
From: filtered <176114999+webfiltered@users.noreply.github.com>
Date: Sun, 2 Mar 2025 19:49:13 +1100
Subject: [PATCH] Fix incorrect links highlighted (#670)

Fixes rare issue where incorrect links could be highlighted (and
seemingly remain highlighted).

Requires corrupt links & null coercion.
---
 src/LGraphCanvas.ts | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/src/LGraphCanvas.ts b/src/LGraphCanvas.ts
index a179f529a..bf012fd13 100644
--- a/src/LGraphCanvas.ts
+++ b/src/LGraphCanvas.ts
@@ -3753,11 +3753,13 @@ export class LGraphCanvas implements ConnectionColorContext {
     // Highlight links
     if (item.inputs) {
       for (const input of item.inputs) {
+        if (input.link == null) continue
         this.highlighted_links[input.link] = true
       }
     }
     if (item.outputs) {
       for (const id of item.outputs.flatMap(x => x.links)) {
+        if (id == null) continue
         this.highlighted_links[id] = true
       }
     }
@@ -3783,11 +3785,13 @@ export class LGraphCanvas implements ConnectionColorContext {
     // Clear link highlight
     if (item.inputs) {
       for (const input of item.inputs) {
+        if (input.link == null) continue
         delete this.highlighted_links[input.link]
       }
     }
     if (item.outputs) {
       for (const id of item.outputs.flatMap(x => x.links)) {
+        if (id == null) continue
         delete this.highlighted_links[id]
       }
     }
@@ -3882,11 +3886,13 @@ export class LGraphCanvas implements ConnectionColorContext {
       // Highlight links
       if (keepSelected.inputs) {
         for (const input of keepSelected.inputs) {
+          if (input.link == null) continue
           this.highlighted_links[input.link] = true
         }
       }
       if (keepSelected.outputs) {
         for (const id of keepSelected.outputs.flatMap(x => x.links)) {
+          if (id == null) continue
           this.highlighted_links[id] = true
         }
       }