/**
 * Unit to represent duration (time).
 */
export declare type DurationUnitEnum = "millisecond" | "second" | "minute" | "hour" | "day";
export declare const DurationUnitEnum: {
    Millisecond: DurationUnitEnum;
    Second: DurationUnitEnum;
    Minute: DurationUnitEnum;
    Hour: DurationUnitEnum;
    Day: DurationUnitEnum;
};