Function map

map<T, E, U>(result: ResultType<T, E>, fn: (value: T) => U): ResultType<U, E>
Transform the success value of a Result. Errors short-circuit: if the input is err, fn is not called and the error is propagated unchanged.

Dual API — works data-first or curried for use in pipe.
Type Parameters
- T
- E
- U
Parameters
- result: ResultType<T, E>
- fn: (value: T) => U
Returns ResultType<U, E>
Example
```
pipe(
    ok({ id: "u-1", name: "Alice" }),
    Result.map(user => user.name.toUpperCase()),
  )
  // { ok: true, value: "ALICE" }
```
- Defined in result/transform.ts:18
map<T, U>(
fn: (value: T) => U,
): <E>(result: ResultType<T, E>) => ResultType<U, E>
Transform the success value of a Result. Errors short-circuit: if the input is err, fn is not called and the error is propagated unchanged.

Dual API — works data-first or curried for use in pipe.
Type Parameters
- T
- U
Parameters
- fn: (value: T) => U
Returns <E>(result: ResultType<T, E>) => ResultType<U, E>
Example
```
pipe(
    ok({ id: "u-1", name: "Alice" }),
    Result.map(user => user.name.toUpperCase()),
  )
  // { ok: true, value: "ALICE" }
```
- Defined in result/transform.ts:19