import { ValidatorRule, ValidatorMessages, ValidatorData, ValidatorRuleMap, ValueMap } from '../types';
/**
 * Returns current validator rules in use
 */
export declare const getValidatorRules: () => ValidatorRuleMap;
/**
 * Adds a custom validator rule to the validator. If the rule is
 * already defined, the new rule will override the original.
 *
 * @param rule new rule to be added
 */
export declare const addValidatorRule: (key: string, rule: ValidatorRule) => void;
/**
 * Validate a field using the provided rules
 *
 * @param valueKey key of value to be validated
 * @param values values of all fields
 * @param targetRules validator rules to use
 * @param customMessages custom validator messages
 */
export declare const validate: (valueKey: string, values?: ValueMap, targetRules?: {
    readonly [name: string]: any;
}, customMessages?: ValidatorMessages) => ValidatorData;