dts: `typeof X` references in ɵmod / hostDirectives use local names with no import (TS2304 in published .d.ts)

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4/5
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3-5 天
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48/100
Issue 類型
缺陷
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描述清楚
活躍度
活躍
技術堆疊
rust, typescript
領域
backend-api-design, build-system

研究方向

Start in dts.rs at the formatter locations listed in the issue: lines 392, 406, 420, 720, and 769. Trace how declarations are generated for ɵmod members and hostDirectives, then check the bundled and unbundled examples against the emitted .d.ts files. Done means referenced classes, including aliased host directives, resolve for consumers without skipLibCheck; add or run focused declaration emit tests for those cases.

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描述

Found while reviewing #683. The member text comes from the compiler (dts.rs), so both the asset and chunk paths ship it.

ngtsc writes references to other classes in .d.ts members as typeof i1.X with import * as i1 from "./x". Oxc writes the local name with no import: format!("typeof {}", …) at dts.rs:392/406/420 (ɵmod declarations / imports / exports) and dts.rs:720/769 (hostDirectives). The name only resolves if that class happens to be declared in the same .d.ts under the same name. Declaration emit drops imports only used by decorators, so it often isn't.

A. bundled (rolldown-plugin-dts), index.ts exports only LibModule
   static ɵmod: i0.ɵɵNgModuleDeclaration<LibModule, never, [typeof InternalComponent], [typeof InternalComponent]>;
   → InternalComponent is not declared in index.d.ts → consumer tsc: TS2304 Cannot find name 'InternalComponent'

B. tsdown unbundle: true
   lib.module.d.mts: [typeof HelloComponent, typeof HighlightDirective], no import of either → 4× TS2304

C. aliased host directive: import { HighlightDirective as HD } …; hostDirectives: [{ directive: HD }]
   [{ directive: typeof HD; … }]  → no `HD` in the emitted .d.ts → TS2304 (or `any` with skipLibCheck)

With skipLibCheck: true the errors go away, but the types become any, so the consumer's Angular compiler can't see the module's exported components.

主要語言
Rust
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245
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26
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1 天 42 分鐘
30 天內合併 PR
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