From: Evan You <yyx990803@gmail.com>
Date: Thu, 13 Feb 2020 23:34:08 +0000 (-0500)
Subject: fix(compiler-core): should not hoist element with cached + merged event handlers
X-Git-Tag: v3.0.0-alpha.5~40
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=5455e8e69a59cd1ff72330b1aed9c8e6aedc4b36;p=thirdparty%2Fvuejs%2Fcore.git

fix(compiler-core): should not hoist element with cached + merged event handlers
---

diff --git a/packages/compiler-core/src/transforms/hoistStatic.ts b/packages/compiler-core/src/transforms/hoistStatic.ts
index da44a1ecb5..968fc59120 100644
--- a/packages/compiler-core/src/transforms/hoistStatic.ts
+++ b/packages/compiler-core/src/transforms/hoistStatic.ts
@@ -176,7 +176,17 @@ function hasCachedProps(node: PlainElementNode): boolean {
   if (props && props.type === NodeTypes.JS_OBJECT_EXPRESSION) {
     const { properties } = props
     for (let i = 0; i < properties.length; i++) {
-      if (properties[i].value.type === NodeTypes.JS_CACHE_EXPRESSION) {
+      const val = properties[i].value
+      if (val.type === NodeTypes.JS_CACHE_EXPRESSION) {
+        return true
+      }
+      // merged event handlers
+      if (
+        val.type === NodeTypes.JS_ARRAY_EXPRESSION &&
+        val.elements.some(
+          e => !isString(e) && e.type === NodeTypes.JS_CACHE_EXPRESSION
+        )
+      ) {
         return true
       }
     }