import type { ModelValue } from './form';
/** 校验器 */
export declare const validators: {
    required(value: any, required: any): string | null;
    min(value: string | number | any[], min: number | [number, string]): string | null;
    max(value: ModelValue, max: number | [number, string]): string | null;
    len(value: string | any[], lenth: number | [number, string]): string | null;
    match(value: string, pattern: RegExp | [RegExp, string]): string | null;
};