import { ElementRef, AfterViewInit, Renderer2 } from '@angular/core';
import { CurrencyPipe } from '@angular/common';
/**
 * The function to reverse the number format
 */
export declare function reverseFormatNumber(val: any, locale: any): any;
export declare class MatCurrencyFormatDirective implements AfterViewInit {
    private el;
    private currencyPipe;
    private renderer;
    private locale;
    currencyCode: string;
    allowNegative: boolean;
    constructor(el: ElementRef, currencyPipe: CurrencyPipe, renderer: Renderer2, locale: string);
    private regex;
    private specialKeys;
    ngAfterViewInit(): void;
    onFocus(): void;
    onFocusout(): void;
    onKeyDown(event: KeyboardEvent): void;
    onBlur($event: any): void;
}