From e10edc827e4916aa06a8fcc38fd7dcfde2b4d7c2 Mon Sep 17 00:00:00 2001
From: David Maskasky <dmaskasky@otter.ai>
Date: Sun, 14 Jul 2024 15:56:39 -0700
Subject: [PATCH] atom toString includes debugLabel in dev mode

---
 src/vanilla/atom.ts | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/src/vanilla/atom.ts b/src/vanilla/atom.ts
index b2cfcba268..27795d4f06 100644
--- a/src/vanilla/atom.ts
+++ b/src/vanilla/atom.ts
@@ -92,7 +92,11 @@ export function atom<Value, Args extends unknown[], Result>(
 ) {
   const key = `atom${++keyCount}`
   const config = {
-    toString: () => key,
+    toString() {
+      return import.meta.env?.MODE !== 'production' && this.debugLabel
+        ? key + ':' + this.debugLabel
+        : key
+    },
   } as WritableAtom<Value, Args, Result> & { init?: Value }
   if (typeof read === 'function') {
     config.read = read as Read<Value, SetAtom<Args, Result>>