microsoft / microsoft/TypeScript
"Find All References" shows all interface implementations instead of specific class method references
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Descripción
When using VS Code's **"Find All References"** on a class method that implements an interface method, the results include all instances where the method is defined (e.g., in the interface and other implementing classes). However, I expected it to show only references specific to the selected class implementation.
#### **Steps to Reproduce:**
1. Create a TypeScript file with the following code:
```ts
export declare interface Transform {
transform(value: any, ...args: any[]): any;
}
export class Bar implements Transform {
transform() {}
}
export class Baz implements Transform {
transform() {}
}
```
2. Right-click on the `transform` method inside the `Bar` class.
3. Select **"Find All References"** from the context menu.
4. The results include all occurrences of `transform`, including the interface definition and the implementation in `Baz`.
#### **Expected Behavior:**
VS Code should return only the references specific to `Bar`'s implementation of `transform`.
#### **Actual Behavior:**
The search includes all references to `transform` across the interface and other implementations, making it difficult to isolate usages of `Bar.transform`.
---
### Impact on "inferFromUsage"
The behavior also affects TypeScript's **"inferFromUsage"** feature:
```ts
export declare interface Transform {
transform(value: any, ...args: any[]): any;
}
export class Bar implements Transform {
transform(value) { } // <-- Inferred: value is a number
}
export class Baz implements Transform {
transform(value) { } // <-- Also inferred as a number, even though Baz is unused
}
new Bar().transform(1);
```
Since `Bar.transform(1)` is explicitly called, TypeScript infers `value` as a `number`. However, `Baz.transform` also gets the same inferred type **even though it's never used**. This suggests that TypeScript applies inference across all implementations of the interface, rather than treating them independently.
[[🔗 TypeScript AST Viewer](https://ts-ast-viewer.com/#code/KYDwDg9gTgLgBAE2AYwDYEMrDgSwHYzBQBm6y2AKlOngM7HQC2cA3gFBydwzV0NSMAFADd0qAK7AAXHBoBPADRwAdKswBzWjPkBtALoBKbXjkBuNgF82bUJFhw06WrTgAhTLkZhUwRsAIuVDT0TKwcXDzB-EKiEsAGrHBWVjbg0PCOzm7oAF6e3r7+MIG8IQJhXNyl0SJikgksSZbWeMAA7tlQggbKkXxMggCMBuZAA)](https://ts-ast-viewer.com/#code/KYDwDg9gTgLgBAE2AYwDYEMrDgSwHYzBQBm6y2AKlOngM7HQC2cA3gFBydwzV0NSMAFADd0qAK7AAXHBoBPADRwAdKswBzWjPkBtALoBKbXjkBuNgF82bUJFhw06WrTgAhTLkZhUwRsAIuVDT0TKwcXDzB-EKiEsAGrHBWVjbg0PCOzm7oAF6e3r7+MIG8IQJhXNyl0SJikgksSZbWeMAA7tlQggbKkXxMggCMBuZAA)
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Línea de trabajo
Empieza reproduciendo el ejemplo de TypeScript con “Find All References” y el caso de inferFromUsage descrito en el issue. Sigue cómo se asocian las implementaciones de interfaces durante la búsqueda de referencias y la inferencia de uso; después, añade cobertura específica que muestre que Bar.transform y Baz.transform se tratan de forma independiente; se considera terminado cuando los resultados y los tipos inferidos coinciden con el comportamiento esperado.
Escrito por el modelo de indexación a partir del texto del issue.
Evaluación
- Stack tecnológico
- typescript
- Área
- compilers
- Tipo de issue
- Error
- Dificultad
- 5/5
- Tiempo estimado
- Más de una semana
- Estado de actividad
- Estancado
- Claridad
- Bastante claro
- Aptitud para principiantes
- 35/100