import { StringFormatType } from '../../utils/index';
import { ValidationContext, ValidatorBase } from '../index';
export declare const VALIDATOR_IN_METADATA_KEY: unique symbol;
export declare function isIn(values: any[], errorMessage?: StringFormatType): (target: Record<string, any>, propertyKey: string | symbol, descriptor: TypedPropertyDescriptor<any>) => void;
export declare class InValidator extends ValidatorBase {
    private values;
    constructor(values: any[], errorMessage?: StringFormatType);
    get Values(): any[];
    validate(context: ValidationContext<any, any>): Promise<boolean>;
}