Function tap

tap<T, E>(result: Result<T, E>, fn: (value: T) => void): Result<T, E>
Observe the Ok value for side effects (logging, metrics) without changing the carried value. Passes Err through untouched.
Type Parameters
- T
- E
Parameters
- result: Result<T, E>
- fn: (value: T) => void
Returns Result<T, E>
Example
```
pipe(
  parseConfig(raw),
  tap((cfg) => log.info({ msg: "parsed", name: cfg.name })),
  flatMap(validate),
);
```
- Defined in packages/result/src/result.ts:236
tap<T>(fn: (value: T) => void): <E>(result: Result<T, E>) => Result<T, E>
Observe the Ok value for side effects (logging, metrics) without changing the carried value. Passes Err through untouched.
Type Parameters
- T
Parameters
- fn: (value: T) => void
Returns <E>(result: Result<T, E>) => Result<T, E>
Example
```
pipe(
  parseConfig(raw),
  tap((cfg) => log.info({ msg: "parsed", name: cfg.name })),
  flatMap(validate),
);
```
- Defined in packages/result/src/result.ts:237