avoid error when asserting mismatched nodes during hydration

yyx990803 · yyx990803 · commit 92473853dd70 · 2016-12-12T14:22:55.000-05:00
diff --git a/src/core/vdom/patch.js b/src/core/vdom/patch.js
@@ -534,7 +534,7 @@ export function createPatchFunction (backend) {
     if (vnode.tag) {
       return (
         vnode.tag.indexOf('vue-component') === 0 ||
-        vnode.tag.toLowerCase() === node.tagName.toLowerCase()
+        vnode.tag.toLowerCase() === (node.tagName && node.tagName.toLowerCase())
       )
     } else {
       return _toString(vnode.text) === node.data

Original file line number	Diff line number	Diff line change
`@@ -534,7 +534,7 @@ export function createPatchFunction (backend) {`
`534`	`534`	`if (vnode.tag) {`
`535`	`535`	`return (`
`536`	`536`	`vnode.tag.indexOf('vue-component') === 0 \|\|`
`537`		`- vnode.tag.toLowerCase() === node.tagName.toLowerCase()`
	`537`	`+ vnode.tag.toLowerCase() === (node.tagName && node.tagName.toLowerCase())`
`538`	`538`	`)`
`539`	`539`	`} else {`
`540`	`540`	`return _toString(vnode.text) === node.data`