Function getUnitFromValue

src/util/time.ts:370–410

(
    value: number | string | Date,
    isUTC: boolean
)

}

export function getUnitFromValue(
    value: number | string | Date,
    isUTC: boolean
): PrimaryTimeUnit {
    const date = numberUtil.parseDate(value);
    const M = (date as any)[monthGetterName(isUTC)]() + 1;
    const d = (date as any)[dateGetterName(isUTC)]();
    const h = (date as any)[hoursGetterName(isUTC)]();
    const m = (date as any)[minutesGetterName(isUTC)]();
    const s = (date as any)[secondsGetterName(isUTC)]();
    const S = (date as any)[millisecondsGetterName(isUTC)]();

    const isSecond = S === 0;
    const isMinute = isSecond && s === 0;
    const isHour = isMinute && m === 0;
    const isDay = isHour && h === 0;
    const isMonth = isDay && d === 1;
    const isYear = isMonth && M === 1;

    if (isYear) {
        return 'year';
    }
    else if (isMonth) {
        return 'month';
    }
    else if (isDay) {
        return 'day';
    }
    else if (isHour) {
        return 'hour';
    }
    else if (isMinute) {
        return 'minute';
    }
    else if (isSecond) {
        return 'second';
    }
    else {
        return 'millisecond';
    }
}

// export function getUnitValue(
//     value: number | Date,