unwrapOptional

Unwraps Optional values, converting Some(value) to value and None to undefined.

Marble Diagram

unwrapOptional()

Example

//  Timeline:
//
//  opt$        Some(42)    None        Some(7)
//  unwrapped$  42          undefined   7
//
//  Explanation:
//  - unwrapOptional converts Some(value) to value, and None to undefined
//  - Useful for extracting raw values from Optional streams

const opt$ = source<Optional<number>>();

const unwrapped$ = opt$.pipe(unwrapOptional());

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

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

opt$.next(Optional.some(42));

assert.deepStrictEqual(valueHistory, [42]);

opt$.next(Optional.none);

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

opt$.next(Optional.some(7));

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

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