fix(runtime-core): fix v-bind class/style merging regression

fix #4155
2021-07-20 13:58:43 -04:00
parent acb2a4d285
commit 2bdee50a59
2 changed files with 9 additions and 7 deletions
--- a/packages/runtime-core/src/vnode.ts
+++ b/packages/runtime-core/src/vnode.ts
@@ -778,8 +778,8 @@ export function normalizeChildren(vnode: VNode, children: unknown) {
 }

 export function mergeProps(...args: (Data & VNodeProps)[]) {
-  const ret = extend({}, args[0])
-  for (let i = 1; i < args.length; i++) {
+  const ret: Data = {}
+  for (let i = 0; i < args.length; i++) {
    const toMerge = args[i]
    for (const key in toMerge) {
      if (key === 'class') {