import { ElementRef } from '@angular/core';
import * as ɵngcc0 from '@angular/core';
export declare class NumbersOnlyDirective {
    private el;
    private regex;
    private specialKeys;
    constructor(el: ElementRef);
    onKeyDown(event: KeyboardEvent): void;
    onKeyUp(event: KeyboardEvent): void;
    static ɵfac: ɵngcc0.ɵɵFactoryDeclaration<NumbersOnlyDirective, never>;
    static ɵdir: ɵngcc0.ɵɵDirectiveDeclaration<NumbersOnlyDirective, "[ngbNumbersOnly]", never, {}, {}, never>;
}

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