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test(compiler): tests for v-for codegen w/ block optimization

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This commit is contained in:
Evan You
2019-10-01 21:00:55 -04:00
parent 65661b5ec0
commit 07955e6c96
3 changed files with 354 additions and 55 deletions
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7
packages/compiler-core/src/transforms/vFor.ts
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@@ -54,7 +54,7 @@ export const transformFor = createStructuralDirectiveTransform(
codegenNode
})
if (!__BROWSER__) {
if (!__BROWSER__ && context.prefixIdentifiers) {
// scope management
// inject identifiers to context
value && addIdentifiers(value)
@@ -75,6 +75,9 @@ export const transformFor = createStructuralDirectiveTransform(
}
if (index) {
if (!key) {
if (!value) {
params.push(createSimpleExpression(`_`, false))
}
params.push(createSimpleExpression(`__`, false))
}
params.push(index)
@@ -95,7 +98,7 @@ export const transformFor = createStructuralDirectiveTransform(
])
)
if (!__BROWSER__) {
if (!__BROWSER__ && context.prefixIdentifiers) {
value && removeIdentifiers(value)
key && removeIdentifiers(key)
index && removeIdentifiers(index)