inspect

function Result.inspect(
    result: Result<T, E>,
    inspect: (value: T) => void
): Result<T, E>

Inspects the Ok value using the inspect function without changing the result. If the result is Ok, calls the inspect function with the value and returns the original result unchanged. If the result is an Err, returns it unchanged without calling inspect.

Example

data-first

Result.inspect(ok(5), (x) => console.log(`Value: ${x}`));
// Ok<number>(5) - logs "Value: 5"

Result.inspect(err("fail"), (x) => console.log(`Value: ${x}`));
// Err<string>("fail") - no log

data-last

pipe(
    ok(5),
    Result.inspect((x) => console.log(`Value: ${x}`)),
);
// Ok<number>(5) - logs "Value: 5"