import { ElementRef } from '@angular/core';
import { ValidationErrors, AbstractControl, AsyncValidator } from '@angular/forms';
import { ImageConfig } from '../../models/config';
import { Observable } from 'rxjs';
import * as i0 from "@angular/core";
export declare class ImageFileControlDirective implements AsyncValidator {
    private elementRef;
    element: any;
    isProcessed: boolean;
    private imageValidation;
    set image(config: ImageConfig);
    constructor(elementRef: ElementRef);
    setConfig(control: AbstractControl): void;
    validate(control: AbstractControl): Promise<ValidationErrors | null> | Observable<ValidationErrors | null>;
    static ɵfac: i0.ɵɵFactoryDeclaration<ImageFileControlDirective, never>;
    static ɵdir: i0.ɵɵDirectiveDeclaration<ImageFileControlDirective, "input[type=file]", never, { "image": "image"; }, {}, never, never, false>;
}