import { Renderer2, ElementRef } from '@angular/core';
import { DefaultValueAccessor } from '@angular/forms';
export declare const VALUE_ACCESSOR: any;
export declare class InputExtensionValueAccessorDirective extends DefaultValueAccessor {
    static decorators: any;
    constructor(renderer: Renderer2, elementRef: ElementRef);
    registerOnChange(fn: (_: any) => void): void;
}