import { Validator, ValidatorOptions, ValidatorType } from './Validator';
import { I18nMessage } from '../i18n';
declare type Constraint = Record<string, Validator>;
interface JsonOptions<T, IsRequired extends boolean> extends ValidatorOptions<T, IsRequired> {
    constraint?: Constraint;
}
export declare class JsonValidator<Type extends object = object, T extends boolean = true> extends Validator<JsonOptions<Type, T>> {
    constraint<V extends Constraint>(constraint: V): JsonValidator<{
        [key in keyof V]: ValidatorType<V[key]>;
    }, T>;
    default(value: Type): JsonValidator<Type, true>;
    optional(): JsonValidator<Type, false>;
    protected validateValue(i18n: I18nMessage, data: Record<string, any>, key: string, superKeys: string[]): string | void;
}
export {};