import { Granularity } from './types.js';
type DateFields<T> = {
    [P in keyof T]: T[P] extends Date ? P : never;
}[keyof T];
export declare function ensureDates<T>(obj: T, ...fields: DateFields<T>[]): void;
export declare function isNetworkDay(n: number): boolean;
export declare function isNetworkDate(d: Date): boolean;
export declare function unix(d: Date | number): number;
export declare function unixDayIndex(d: Date | number): number;
export declare function dateFromUnixDayIndex(d: number): Date;
export declare function decomposeDate<K extends Granularity>(d: Date, local: boolean, ...grans: K[]): Record<K, number>;
export declare function splitDatesByDay(dates: number[]): number[][];
export declare function getDiscreteDiff(d1: number | Date, d2: number | Date, granularity: Granularity, local?: boolean, absolute?: boolean): number;
export declare function getDaysStreak(dates: number[], descentOrder: boolean): number;
export {};