import { FormGroup } from '@angular/forms';
export declare type ariaLiveValue = 'assertive' | 'off';
export declare type ariaInvalidFn = (controlName: string) => boolean;
export declare type ariaLiveFn = (controlName: string, error: string) => ariaLiveValue;
export declare type formAriaInvalidFn = (controlNames: string[], error: string) => boolean;
export declare type formAriaLiveFn = (controlNames: string[], error: string) => ariaLiveValue;
export declare const makeAriaInvalidFn: (form: FormGroup, options?: any) => ariaInvalidFn;
export declare const makeAriaLiveFn: (form: FormGroup, options?: any) => ariaLiveFn;
export declare const makeFormAriaInvalidFn: (form: FormGroup) => formAriaInvalidFn;
export declare const makeFormAriaLiveFn: (form: FormGroup) => formAriaLiveFn;