Function tapError

tapError<T, E>(
result: ResultType<T, E>,
fn: (error: E) => void,
): ResultType<T, E>
Run a side effect on the error without altering the result. Useful for logging failures inside a pipe without interrupting downstream steps.

Dual API — works data-first or curried for use in pipe.
Type Parameters
- T
- E
Parameters
- result: ResultType<T, E>
- fn: (error: E) => void
Returns ResultType<T, E>
Example
```
pipe(
    validateEmail(input),
    Result.tapError(e => logger.warn("validation failed", e)),
  )
```
- Defined in result/transform.ts:135
tapError<E>(
fn: (error: E) => void,
): <T>(result: ResultType<T, E>) => ResultType<T, E>
Run a side effect on the error without altering the result. Useful for logging failures inside a pipe without interrupting downstream steps.

Dual API — works data-first or curried for use in pipe.
Type Parameters
- E
Parameters
- fn: (error: E) => void
Returns <T>(result: ResultType<T, E>) => ResultType<T, E>
Example
```
pipe(
    validateEmail(input),
    Result.tapError(e => logger.warn("validation failed", e)),
  )
```
- Defined in result/transform.ts:136