type DeepPartial<T> = {
    [P in keyof T]?: T[P] extends Array<infer U> ? Array<DeepPartial<U>> : T[P] extends ReadonlyArray<infer U> ? ReadonlyArray<DeepPartial<U>> : DeepPartial<T[P]>;
};
export type ValidateArg<T> = T extends object ? DeepPartial<T> : T;
export type Validator<T> = {
    prevalidate?: (v: string | null) => boolean;
    rehydrate: (v: string | null) => T;
    validate?: (v: ValidateArg<T>) => boolean;
    optional: boolean;
    description?: string;
    errorMessage?: string;
};
export type BuiltInValidator<T, DescriptionT extends string, ErrorMessageT extends string> = Validator<T> & {
    description: DescriptionT;
    errorMessage: ErrorMessageT;
};
export {};
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