How to use the @esfx/cancelable.Cancelable.subscribe function in @esfx/cancelable

value = _msec as T | PromiseLike;
            msec = cancelable;
            cancelable = Cancelable.none;
        }
        else {
            msec = _msec as number;
        }

        Cancelable.throwIfSignaled(cancelable);

        const handle = setTimeout(() => {
            subscription.unsubscribe();
            resolve(value);
        }, msec);

        const subscription = Cancelable.subscribe(cancelable, () => {
            clearTimeout(handle);
            reject(new CancelError());
        });
    });
}