import { RowPipe } from "./row.pipe";
import { UntypedFormGroup } from "@angular/forms";
import * as i0 from "@angular/core";
export declare class RowTreePipe extends RowPipe {
    transform(row: UntypedFormGroup): any;
    static ɵfac: i0.ɵɵFactoryDeclaration<RowTreePipe, never>;
    static ɵpipe: i0.ɵɵPipeDeclaration<RowTreePipe, "rowTreePipe", true>;
}