deferredImports: partial output never loads the block, and the Angular 22.2 named form does not compile
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還沒有人認領這個 Issue。
評估
研究方向
Start with component/decorator.rs, transform/control_flow.rs, and partial/component.rs, which the issue identifies as the parsing, trigger, and partial emit paths. Compare the array and named forms against the reproduction and the ngtsc 22.2 behavior described in the issue. The work is done when the intended array-form behavior is decided and both forms compile and emit deferred dependencies correctly in full and partial modes.
由索引模型根據 Issue 內容生成。
描述
Summary
Two problems with @Component.deferredImports:
- With the array form, partial compilation emits no
deferBlockDependenciesand nodependencies. After linking, the block isɵɵdefer(1, 0), and the deferred component never loads or renders. - The Angular 22.2 named form (
deferredImports: {blk: [ChildCmp]}with@defer (name blk)) does not compile at all. It fails withUnrecognized trigger.
Found while re-checking #623.
Reproduction
// (i) array form. ngtsc 22.2 rejects it in full and partial mode.
@Component({
selector: 'app',
// @ts-ignore
deferredImports: [ChildCmp],
template: '@defer { <child-cmp /> }',
})
export class App {}
// (ii) named form, Angular 22.2
@Component({
selector: 'app',
deferredImports: {blk: [ChildCmp]},
template: '@defer (name blk) { <child-cmp /> }',
})
export class App {}
ChildCmp is imported from ./child.
| ngtsc 22.2.3 | oxc (main 5780233) | |
|---|---|---|
| (i) full | error: 'deferredImports' must be an object mapping block names to dependency arrays. |
accepted. The deps fn is inline, but import {ChildCmp} is kept, so the code is not split |
| (i) partial | same error | no deferBlockDependencies. After linking: ɵɵdefer(1, 0), and <child-cmp> never renders |
| (ii) full | const App_Defer_1_DepsFn = () => [import("./child").then(m => m.ChildCmp)], and the import is removed |
Unrecognized trigger. The source is returned untouched |
| (ii) partial | deferBlockDependencies: [() => [import("./child")…]] and ngDeclareClassMetadataAsync |
Unrecognized trigger |
Where
- The object form is not parsed:
component/decorator.rs(extract_identifier_array). nameis rejected as a trigger:transform/control_flow.rs.- Partial emit skips
deferBlockDependencies:partial/component.rs.
One question is a product call: should oxc keep accepting the array form, which ngtsc 22.2 rejects?
- 主要語言
- Rust
- 星號
- 245
- 分支
- 26
- 平均合併
- 22 小時 27 分鐘
- 30 天內合併 PR
- 106
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從這裡開始
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- Fork 儲存庫，在一個分支上完成修改。
- 送出 Pull Request，並在描述裡引用這個 Issue 編號。
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