From: Tycho <jh.leong@outlook.com>
Date: Fri, 11 Oct 2024 02:39:08 +0000 (+0800)
Subject: fix(reactivity): trigger reactivity for Map key `undefined` (#12055)
X-Git-Tag: v3.5.12~16
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=7ad289e1e7fea654524008ff91e43a8b8a55ef22;p=thirdparty%2Fvuejs%2Fcore.git

fix(reactivity): trigger reactivity for Map key `undefined` (#12055)

close #12054
---

diff --git a/packages/reactivity/__tests__/reactive.spec.ts b/packages/reactivity/__tests__/reactive.spec.ts
index 47f6aa297e..aabd954568 100644
--- a/packages/reactivity/__tests__/reactive.spec.ts
+++ b/packages/reactivity/__tests__/reactive.spec.ts
@@ -409,4 +409,14 @@ describe('reactivity/reactive', () => {
     e.effect.stop()
     expect(targetMap.get(obj)?.get('x')).toBeFalsy()
   })
+
+  test('should trigger reactivity when Map key is undefined', () => {
+    const map = reactive(new Map())
+    const c = computed(() => map.get(void 0))
+
+    expect(c.value).toBe(void 0)
+
+    map.set(void 0, 1)
+    expect(c.value).toBe(1)
+  })
 })
diff --git a/packages/reactivity/src/dep.ts b/packages/reactivity/src/dep.ts
index 7e40487434..196c2aaf98 100644
--- a/packages/reactivity/src/dep.ts
+++ b/packages/reactivity/src/dep.ts
@@ -340,7 +340,7 @@ export function trigger(
       })
     } else {
       // schedule runs for SET | ADD | DELETE
-      if (key !== void 0) {
+      if (key !== void 0 || depsMap.has(void 0)) {
         run(depsMap.get(key))
       }