fix(runtime-core): avoid object prototype keys in property access cache (#2416)

diff --git a/packages/runtime-core/src/component.ts b/packages/runtime-core/src/component.ts
index 19035961c96bb46f18e30580a226edd9ecd96c70..3fea92ba4e5c79d448ed61babc99cbb855e54862 100644 (file)
--- a/packages/runtime-core/src/component.ts
+++ b/packages/runtime-core/src/component.ts
@@ -549,7 +549,7 @@ function setupStatefulComponent(
     }
   }
   // 0. create render proxy property access cache
-  instance.accessCache = {}
+  instance.accessCache = Object.create(null)
   // 1. create public instance / render proxy
   // also mark it raw so it's never observed
   instance.proxy = new Proxy(instance.ctx, PublicInstanceProxyHandlers)