Template type checking re-builds do not run correctly when referencing a re-exported type
- 主要語言
- TypeScript
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- 平均合併
- 14 小時 23 分鐘
- 30 天內合併 PR
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描述
### Which @angular/* package(s) are the source of the bug?
Don't known / other
### Is this a regression?
Yes
### Description
Consider the following example, running ng serve with template type checking turned on:
- An Angular template references a property on the component class in an expression.
- This component class properties type definition comes from a file which re-exports the type definition from another file.
- Re-builds do not always re-compile the template expression when they should.
More specifically, in the reproduction repo this looks as follows:
- The app component template includes an expression: `{{ myType?.abc }}`.
- The app component class defines the myType property: `myType?: MyTypeReExported`.
- The type of the myType property comes from a file which re-exports another type. `export type MyTypeRexported = MyType`.
- The type MyType comes from a file which defines the definition as: `export interface MyType { abc: 123; }`.
- The initial ng serve will run without errors.
- Changing the type definition of MyType to be `export interface MyType { abcd: 123; }` causes an error in the app component's template. This is seen in the re-build console output. This is the correct behaviour.
- Changing the type definition back to what it was originally should remove the error. However, it does not. That is the bug.
### Please provide a link to a minimal reproduction of the bug
https://github.com/HazzMan2409/angular-template-rebuild-bug
### Please provide the environment you discovered this bug in
```true
Angular 12.2.5.
Node 14.17.6
See the package.json on the repo for more details. At the time 12.2.5 was the latest version.
```
貢獻指南
研究方向
從連結的最小重現開始,並在所述的 Angular 和 Node 版本上啟用範本型別檢查執行 ng serve。在 abc 和 abcd 定義之間切換 MyType,然後檢查 Angular CLI 重建和範本型別檢查路徑。還原型別定義後,如果重建時的範本錯誤被移除,即表示完成。
由索引模型根據 Issue 內容生成。
評估
- 技術堆疊
- angular, typescript
- 領域
- build-system
- Issue 類型
- 缺陷
- 難度
- 4/5
- 預估耗時
- 3-5 天
- 活躍度
- 停滯
- 描述清晰度
- 基本清楚
- 新手友好度
- 35/100