import { ValidationOptions } from "class-validator";
export declare enum UserRefValidationResult {
    VALID_USER_ALIAS = 0,
    VALID_SYSTEM_USER = 1,
    VALID_ETH_ADDRESS = 2,
    INVALID_ETH_USER_ALIAS = 3,
    INVALID_FORMAT = 4
}
export declare function meansValidUserRef(result: UserRefValidationResult): boolean;
export declare function validateUserRef(value: unknown): UserRefValidationResult;
export declare function IsUserRef(options?: ValidationOptions): (object: object, propertyName: string) => void;
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