Function getValue

src/useMergeOption/demos/basic.tsx:13–17

()

    const merged = useMergeOption(state, { day: true });

    const getValue = () => {
        if (state === false) return 0;
        if (state === true) return 2;
        return 1;
    };
    const setValue = (value: number) => {
        setState([false, { day: false }, true][value]);
    };