Divergences from ngtsc found by running Angular's ngtsc emit specs (non-functional)
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還沒有人認領這個 Issue。
評估
- 難度
- 5/5
- 預估耗時
- 一週以上
- 新手友好度
- 28/100
- Issue 類型
- 缺陷
- 描述清晰度
- 基本清楚
- 活躍度
- 活躍
- 技術堆疊
- angular, rust, typescript
- 領域
- testing-qa
研究方向
Start with the listed Angular ngtsc emit specs and compare their expected output with oxc’s transformAngularFileSync output; the issue groups divergences by dev mode, bundle size, and runtime behavior. Choose one divergence and trace the corresponding compiler path. Done means the selected case matches Angular’s output where required, or its behavior and rationale are documented.
由索引模型根據 Issue 內容生成。
描述
Summary
I ran Angular v22.0.0's own packages/compiler-cli/test/ngtsc/*_spec.ts emit tests against oxc main (04cb3b2, angularVersion 22.0.0). For each test, driveMain() was replaced with transformAngularFileSync. Of 527 tests that assert on emitted JS, 254 pass. This issue lists the remaining divergences that aren't runtime bugs, so they're tracked in one place. Items marked (known) are already in e2e/compare/fixtures/known-differences.ts.
Dev-mode only
| Divergence | ngtsc spec |
|---|---|
Signal APIs (signal, computed, input, model, linkedSignal, resource, httpResource, queries…) get no debugName (known) |
debug_transform_spec.ts (72 tests) |
ɵɵattachSourceLocations(...) never emitted (template source locations for DevTools) |
attach_source_location_spec.ts (4) |
forbidOrphanRendering: true missing from ɵsetClassDebugInfo when forbidOrphanComponents is set (no equivalent option) |
ngtsc_spec.ts "should set forbidOrphanRendering debug info…" (2) |
setClassMetadata uses type: i1.KeyCodes for a const enum ctor param, where ngtsc uses type: undefined |
ngtsc_spec.ts "should use undefined in setClassMetadata for const enums" |
Bundle size
| Divergence | ngtsc spec |
|---|---|
ɵɵsetNgModuleScope isn't guarded by ngJitMode (known, intentional) |
scope_spec.ts, ngtsc_spec.ts "should compile NgModules without errors" |
ɵɵdefineInjector({ imports }) keeps standalone directives and pipes (and NgModule-exported directives) that ngtsc filters out |
standalone_spec.ts "optimizations …" (4), ngtsc_spec.ts "InjectorDef emit optimizations…" (2), "should filter out directives and pipes from module exports in the injector def" |
schemas: [...] is emitted in ɵcmp/ɵmod; ngtsc drops it |
standalone_spec.ts "…with schema support", ngtsc_spec.ts "should not include schemas in component and module defs" |
Query predicates are inlined (ɵɵviewQuery(["test1"], 5)) instead of pooled constants (const _c0 = ["test1"]) |
ngtsc_spec.ts "should generate queries for directives" |
Identical inline styles across components in one file aren't shared through a _c0 constant |
ngtsc_spec.ts "inline resources should share same styles…" |
Different output, same runtime behaviour
- Dependencies use
ɵɵgetComponentDepsFactory(Cmp, imports)instead of the resolved list (known). This also accounts for thesetComponentScopecycle-detection tests. @deferloaders are inline arrows inɵɵdefer(i, j, () => [import(...)]). ngtsc emits a namedCmp_Defer_N_DepsFnconst that also lists eagerly available local deps, and() => [CmpA]when nothing is lazy. (defer_spec.ts, ~20 tests)- Constructors that can't be injected compile to
new C(ɵɵinvalidFactoryDep(n)), where ngtsc emitsɵɵinvalidFactory(). Both throw on instantiation, with different messages. (ngtsc_spec.ts"compiling invalid @Injectables/@Directives…",local_compilation_spec.ts"should generate invalid factory…", 16 tests) - Import shape:
- named imports are kept, where ngtsc re-emits
import * as i1; - no local-compilation side-effect imports (
import "./dep"); ModuleWithProvidersconstants aren't unwrapped (imports: [mwp]vs[i1.DepModule]);- default-imported tokens are emitted as
i1.default.
- named imports are kept, where ngtsc re-emits
Not applicable to oxc (for completeness)
.d.ts assertions in full mode, flat module index, Bazel/g3 alias re-exports (ɵngExportɵ…, _useHostForImportAndAliasGeneration), Closure annotations, compileNonExportedClasses, supportTestBed/supportJitMode: false.
Functional bugs found by the same run are filed separately; links in a comment below.
- 主要語言
- Rust
- 星號
- 244
- 分支
- 26
- 平均合併
- 23 小時 16 分鐘
- 30 天內合併 PR
- 96
環境準備
這個專案沒有提供開發容器、Dockerfile 或貢獻指南，環境需要你自己搭建：先看它的 README，通用步驟見我們的新手貢獻指南。
從這裡開始
- 先讀完整個 Issue，再讀專案的貢獻指南。
- 在 Issue 下留言說明你要接手 —— 這能避免兩個人做同樣的事。
- 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。
voidzero-dev/oxc-angular-compiler 的其他 Issue
-
vite: async/await is not lowered for zone.js, so fakeAsync/tick cannot control awaits可能已有人在做 @edbzn 於 2 天前認領。 未關閉
難度 4/5 3-5 天 新手友好度 35/100
voidzero-dev/oxc-angular-compiler#641 ·
維護者通常 1 天內回覆
-
@defer doesn't lazy-load an imports entry written as forwardRef(() => X)可能已有人在做 @edbzn 於 2 天前認領。 未關閉
難度 4/5 3-5 天 新手友好度 35/100
voidzero-dev/oxc-angular-compiler#632 ·
維護者通常 1 天內回覆
-
Dynamic host attribute values are rejected (and two local-compilation-only transform cases)可能已有人在做 @edbzn 於 2 天前認領。 未關閉
難度 4/5 1-2 天 新手友好度 35/100
voidzero-dev/oxc-angular-compiler#627 ·
維護者通常 1 天內回覆
-
@Injectable deps entries written as [new Optional(), new Self(), Dep] inject the array as the token未關閉
難度 4/5 3-5 天 新手友好度 52/100
voidzero-dev/oxc-angular-compiler#626 ·
維護者通常 1 天內回覆
-
Support useDefineForClassFields: false (Class Field Lowering)可能已有人在做 關聯的 PR 仍在進行中或已合併。 未關閉
難度 5/5 一週以上 新手友好度 35/100
voidzero-dev/oxc-angular-compiler#73 · 11 則留言 ·
維護者通常 1 天內回覆
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