import { ElementRef, Renderer2 } from '@angular/core';
import * as i0 from "@angular/core";
export declare class RequiredInputDirective {
    private el;
    private renderer;
    constructor(el: ElementRef, renderer: Renderer2);
    onInput(): void;
    static ɵfac: i0.ɵɵFactoryDeclaration<RequiredInputDirective, never>;
    static ɵdir: i0.ɵɵDirectiveDeclaration<RequiredInputDirective, "[requiredInput]", never, {}, {}, never, never, false, never>;
}