import { PipeTransform } from '@angular/core';
import * as i0 from "@angular/core";
export declare class NgxHelperPeriodPipe implements PipeTransform {
    transform(value?: Date | null, options?: {
        timezone?: string;
    }): string;
    transform(value?: {
        from: Date;
    } | null, options?: {
        timezone?: string;
    }): string;
    transform(value?: {
        to: Date;
    } | null, options?: {
        timezone?: string;
    }): string;
    transform(value?: {
        from: Date;
        to: Date;
    } | null, options?: {
        timezone?: string;
    }): string;
    static ɵfac: i0.ɵɵFactoryDeclaration<NgxHelperPeriodPipe, never>;
    static ɵpipe: i0.ɵɵPipeDeclaration<NgxHelperPeriodPipe, "ngxHelperPeriod", true>;
}