Function tapErr

tapErr<T, E>(result: Result<T, E>, fn: (error: E) => void): Result<T, E>
Observe the Err value for side effects (logging, metrics) without changing the carried error. Passes Ok through untouched.
Type Parameters
- T
- E
Parameters
- result: Result<T, E>
- fn: (error: E) => void
Returns Result<T, E>
Example
```
pipe(
  loadUser(id),
  tapErr((e) => metrics.inc("user.load.fail", { kind: e.kind })),
);
```
- Defined in packages/result/src/result.ts:263
tapErr<E>(fn: (error: E) => void): <T>(result: Result<T, E>) => Result<T, E>
Observe the Err value for side effects (logging, metrics) without changing the carried error. Passes Ok through untouched.
Type Parameters
- E
Parameters
- fn: (error: E) => void
Returns <T>(result: Result<T, E>) => Result<T, E>
Example
```
pipe(
  loadUser(id),
  tapErr((e) => metrics.inc("user.load.fail", { kind: e.kind })),
);
```
- Defined in packages/result/src/result.ts:264