unwrapResultOk

Unwraps the success value from a Result, converting Ok(value) to value and Err to undefined.

Marble Diagram

unwrapResultOk()

Example

//  Timeline:
//
//  result$     Ok(42)    Err("e")    Ok(7)
//  unwrapped$  42        undefined   7
//
//  Explanation:
//  - unwrapResultOk converts Ok(value) to value, and Err to undefined
//  - Useful for extracting success values from Result streams

const result$ = source<Result<number, string>>();

const unwrapped$ = result$.pipe(unwrapResultOk());

const valueHistory: (number | undefined)[] = [];

unwrapped$.subscribe((v) => {
    valueHistory.push(v);
});

result$.next(Result.ok(42));

assert.deepStrictEqual(valueHistory, [42]);

result$.next(Result.err('e'));

assert.deepStrictEqual(valueHistory, [42, undefined]);

result$.next(Result.ok(7));

assert.deepStrictEqual(valueHistory, [42, undefined, 7]);

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