import { Observable } from 'rxjs';
import { Moment } from 'moment';
import { Filter } from '../interfaces/filter';
export declare class FilterService {
    constructor();
    static filter<T extends {
        [key in keyof T]: string;
    }>(data$: Observable<T[]>, filter$: Observable<Filter<T, Moment[]>>): Observable<{
        body: T[];
        pages: number;
        items: number;
    }>;
    static filterData<T extends {
        [key in keyof T]: string;
    }>(data: T[], filter: Filter<T, Moment[]>): T[];
    static sortData<T extends {
        [key in keyof T]: string;
    }>(data: T[], filter: Filter<T, Moment[]>): T[];
    static compare<T>(a: T, b: T, sortAsc: boolean): 1 | 0 | -1;
}