import { AbstractControl, Validator } from '@angular/forms';
import * as i0 from "@angular/core";
export declare class FileTypeValidator implements Validator {
    accept: string;
    set setAccept(value: string | string[]);
    constructor();
    validate(control: AbstractControl): {
        [key: string]: any;
    } | null;
    static ɵfac: i0.ɵɵFactoryDeclaration<FileTypeValidator, never>;
    static ɵdir: i0.ɵɵDirectiveDeclaration<FileTypeValidator, "input[type=file][accept]", never, { "setAccept": "accept"; }, {}, never, never, false>;
}
