import { AbstractControl, AsyncValidatorFn, Validator, ValidatorFn } from '@angular/forms';
export declare type ValidationResult = {
    [validator: string]: string | boolean;
};
export declare type ValidatorArray = Array<Validator | ValidatorFn>;
export declare type AsyncValidatorArray = Array<Validator | AsyncValidatorFn>;
export declare let composeValidators: (validators: ValidatorArray) => AsyncValidatorFn | ValidatorFn;
export declare let validate: (validators: ValidatorArray, asyncValidators: AsyncValidatorArray) => (control: AbstractControl) => any;
export declare const message: (validator: ValidationResult, key: string) => string;