/// <reference types="jest" />
import { Message } from '../utils/Types';
import CustomMatcherResult = jest.CustomMatcherResult;
export declare const Fails: {
    Yes: string;
    No: (reason: string) => string;
};
export declare const FailsWith: {
    Yes: string;
    No: (message: string, instead: string) => string;
};
export declare const toFailMatcher: (result: CustomMatcherResult) => CustomMatcherResult;
export declare const toFailMatcherWith: (result: CustomMatcherResult, message: Message<CustomMatcherResult>) => CustomMatcherResult;
declare global {
    namespace jest {
        interface Matchers<R, T> {
            toFailMatcher(): R;
            toFailMatcherWith(message: string): R;
        }
    }
}