import type { PipeTransform } from '@angular/core';
import * as i0 from "@angular/core";
export declare class TuiIsOptionalPipe implements PipeTransform {
    transform(name: string): boolean;
    static ɵfac: i0.ɵɵFactoryDeclaration<TuiIsOptionalPipe, never>;
    static ɵpipe: i0.ɵɵPipeDeclaration<TuiIsOptionalPipe, "tuiIsOptionalPipe", true>;
}