fix(runtime-core): fix dev fragment root flag check

yyx990803 · yyx990803 · commit 9cf75258c866 · 2021-03-30T19:55:05.000-04:00
diff --git a/packages/runtime-core/src/renderer.ts b/packages/runtime-core/src/renderer.ts
@@ -848,7 +848,11 @@ function baseCreateRenderer(
     }
     if (parentComponent) {
       let subTree = parentComponent.subTree
-      if (__DEV__ && subTree.patchFlag & PatchFlags.DEV_ROOT_FRAGMENT) {
+      if (
+        __DEV__ &&
+        subTree.patchFlag > 0 &&
+        subTree.patchFlag & PatchFlags.DEV_ROOT_FRAGMENT
+      ) {
         subTree =
           filterSingleRoot(subTree.children as VNodeArrayChildren) || subTree
       }

Original file line number	Diff line number	Diff line change
`@@ -848,7 +848,11 @@ function baseCreateRenderer(`
`848`	`848`	`}`
`849`	`849`	`if (parentComponent) {`
`850`	`850`	`let subTree = parentComponent.subTree`
`851`		`- if (__DEV__ && subTree.patchFlag & PatchFlags.DEV_ROOT_FRAGMENT) {`
	`851`	`+ if (`
	`852`	`+ __DEV__ &&`
	`853`	`+ subTree.patchFlag > 0 &&`
	`854`	`+ subTree.patchFlag & PatchFlags.DEV_ROOT_FRAGMENT`
	`855`	`+ ) {`
`852`	`856`	`subTree =`
`853`	`857`	`filterSingleRoot(subTree.children as VNodeArrayChildren) \|\| subTree`
`854`	`858`	`}`