fix(compiler-core): should attach key to single element child of <template v-for> (#1910)

2020-08-20 22:09:57 +08:00
parent 7ffb79c563
commit 69cfed6b31
3 changed files with 43 additions and 0 deletions
--- a/packages/compiler-core/src/transforms/vFor.ts
+++ b/packages/compiler-core/src/transforms/vFor.ts
@@ -145,6 +145,9 @@ export const transformFor = createStructuralDirectiveTransform(
          // but mark it as a block.
          childBlock = (children[0] as PlainElementNode)
            .codegenNode as VNodeCall
+          if (isTemplate && keyProperty) {
+            injectProp(childBlock, keyProperty, context)
+          }
          childBlock.isBlock = !isStableFragment
          if (childBlock.isBlock) {
            helper(OPEN_BLOCK)