Combine Latest that functions with a keyed object

combineLatestObj.ts

const combineLatestObj = <T>(
  obj: T,
): Observable<{ [K in keyof T]: ObservedValueOf<T[K]> }> => {
  const keys = Object.keys(obj);
  const values = Object.values(obj);

  return combineLatest(values).pipe(
    map(
      (observedValues) =>
        keys.reduce((result, key, i) => {
          (result as any)[key] = observedValues[i];
          return result;
        }, {}) as {
          [K in keyof T]: ObservedValueOf<T[K]>;
        },
    ),
  );
};