From: Evan You <yyx990803@gmail.com>
Date: Fri, 1 May 2020 17:24:38 +0000 (-0400)
Subject: perf: instance public proxy should never be observed
X-Git-Tag: v3.0.0-beta.6~12
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=11f38d8a853b2d8043212c17612b63df92322de4;p=thirdparty%2Fvuejs%2Fcore.git

perf: instance public proxy should never be observed
---

diff --git a/packages/runtime-core/src/component.ts b/packages/runtime-core/src/component.ts
index dd1bf62ce0..1c9b17baee 100644
--- a/packages/runtime-core/src/component.ts
+++ b/packages/runtime-core/src/component.ts
@@ -4,7 +4,8 @@ import {
   ReactiveEffect,
   pauseTracking,
   resetTracking,
-  shallowReadonly
+  shallowReadonly,
+  markRaw
 } from '@vue/reactivity'
 import {
   ComponentPublicInstance,
@@ -462,7 +463,8 @@ function setupStatefulComponent(
   // 0. create render proxy property access cache
   instance.accessCache = {}
   // 1. create public instance / render proxy
-  instance.proxy = new Proxy(instance.ctx, PublicInstanceProxyHandlers)
+  // also mark it raw so it's never observed
+  instance.proxy = markRaw(new Proxy(instance.ctx, PublicInstanceProxyHandlers))
   if (__DEV__) {
     exposePropsOnRenderContext(instance)
   }