/**
 * @public
 */
export type TimePeriodField = 'year' | 'month' | 'week' | 'day' | 'hour' | 'minute' | 'second' | 'millis';
/**
 * @internal
 */
export declare const TIME_PERIOD_FIELDS: TimePeriodField[];
/**
 * @public
 */
export interface TimePeriod {
    year: number;
    month: number;
    week: number;
    day: number;
    hour: number;
    minute: number;
    second: number;
    millis: number;
}
export declare const timePeriod: () => TimePeriod;
/**
 * @internal
 */
export declare const enum TimePeriodFieldFlag {
    YEAR = 1,
    MONTH = 2,
    WEEK = 4,
    DAY = 8,
    HOUR = 16,
    MINUTE = 32,
    SECOND = 64,
    MILLIS = 128
}
/**
 * @internal
 */
export declare const TIME_FLAGS: number;
/**
 * @internal
 */
export declare const timePeriodFieldFlags: (fields?: TimePeriodField[]) => [number, number];