import { Validator } from '../core';
interface IsEqual {
    (a: any, b: any): boolean;
}
export declare function uniq<ValidValue = any>(): Validator<ValidValue>;
export declare function uniq<ValidValue = any>(isEqual: IsEqual): Validator<ValidValue>;
export declare function uniq<ValidValue = any>(message: string): Validator<ValidValue>;
export declare function uniq<ValidValue = any>(isEqual: IsEqual, message: string): Validator<ValidValue>;
export {};