Function mapError

mapError<T, E, F>(
result: ResultType<T, E>,
fn: (error: E) => F,
): ResultType<T, F>
Transform the error channel of a Result. Success values pass through untouched. Useful for translating low-level errors into domain errors.

Dual API — works data-first or curried for use in pipe.
Type Parameters
- T
- E
- F
Parameters
- result: ResultType<T, E>
- fn: (error: E) => F
Returns ResultType<T, F>
Example
```
pipe(
    parseOrder(raw),
    Result.mapError(e => ({ code: "BAD_ORDER", cause: e })),
  )
```
- Defined in result/transform.ts:44
mapError<E, F>(
fn: (error: E) => F,
): <T>(result: ResultType<T, E>) => ResultType<T, F>
Transform the error channel of a Result. Success values pass through untouched. Useful for translating low-level errors into domain errors.

Dual API — works data-first or curried for use in pipe.
Type Parameters
- E
- F
Parameters
- fn: (error: E) => F
Returns <T>(result: ResultType<T, E>) => ResultType<T, F>
Example
```
pipe(
    parseOrder(raw),
    Result.mapError(e => ({ code: "BAD_ORDER", cause: e })),
  )
```
- Defined in result/transform.ts:45