fix(v-memo): ensure track block when returning cached vnode (#4270)

fix #4253
2021-08-07 09:44:45 +08:00
parent 3b60358d0e
commit a211e271ee
3 changed files with 12 additions and 10 deletions
--- a/packages/compiler-core/src/transforms/vFor.ts
+++ b/packages/compiler-core/src/transforms/vFor.ts
@@ -209,7 +209,7 @@ export const transformFor = createStructuralDirectiveTransform(
              ...(keyExp ? [` && _cached.key === `, keyExp] : []),
              ` && ${context.helperString(
                IS_MEMO_SAME
-              )}(_cached.memo, _memo)) return _cached`
+              )}(_cached, _memo)) return _cached`
            ]),
            createCompoundExpression([`const _item = `, childBlock as any]),
            createSimpleExpression(`_item.memo = _memo`),