import { OnChanges, SimpleChanges } from '@angular/core';
import { FormControlDirective, FormGroupDirective } from '@angular/forms';
import * as i0 from "@angular/core";
export declare class ArrayIndexDirective implements OnChanges {
    private group?;
    private control?;
    private index;
    set affArrayIndex(index: number);
    constructor(group?: FormGroupDirective | undefined, control?: FormControlDirective | undefined);
    ngOnChanges(changes: SimpleChanges): void;
    static ɵfac: i0.ɵɵFactoryDeclaration<ArrayIndexDirective, [{ optional: true; }, { optional: true; }]>;
    static ɵdir: i0.ɵɵDirectiveDeclaration<ArrayIndexDirective, "[affArrayIndex]", never, { "affArrayIndex": "affArrayIndex"; }, {}, never, never, false, never>;
}