import { IDictionary } from '../core/common';
export declare const flatten: <T>(arr: T[][]) => T[];
export declare const distinct: <T>(arr: T[]) => T[];
export declare const fst: <T>(arr: T[]) => T;
export declare const lst: <T>(arr: T[]) => T;
export declare const encodePayload: (data: any) => string;
export declare const template: (str: string, values?: IDictionary<string | number>) => string;
declare type IPredicate<T> = (value: T) => boolean;
export declare const andFilter: <T>(predicates: IPredicate<T>[]) => IPredicate<T>;
export declare const andPredicates: <T>(predicates: IPredicate<T>[], value: T) => boolean;
export declare function timestampToMinutes(value: number): number;
export declare function timestampToHours(value: number): number;
export declare function addTime(baseMs: number, offsetMs: number): number;
export declare function isLastIndex<T>(index: number, arr: T[]): boolean;
export declare const SECOND = 1000;
export declare const MINUTE: number;
export declare const HOUR: number;
export declare const DAY: number;
export {};