fix: use target[key] instead of oldValue in readonly warning

jh-leong · jh-leong · commit 57d78f226c89 · 2025-05-25T10:11:53.000+08:00
diff --git a/packages/reactivity/src/baseHandlers.ts b/packages/reactivity/src/baseHandlers.ts
@@ -156,7 +156,7 @@ class MutableReactiveHandler extends BaseReactiveHandler {
           if (__DEV__) {
             warn(
               `Set operation on key "${String(key)}" failed: target is readonly.`,
-              oldValue,
+              target[key],
             )
           }
           return true

Original file line number	Diff line number	Diff line change
`@@ -156,7 +156,7 @@ class MutableReactiveHandler extends BaseReactiveHandler {`
`156`	`156`	`if (__DEV__) {`
`157`	`157`	`warn(`
`158`	`158`	`Set operation on key "${String(key)}" failed: target is readonly.`,
`159`		`- oldValue,`
	`159`	`+ target[key],`
`160`	`160`	`)`
`161`	`161`	`}`
`162`	`162`	`return true`