import { MutableRefObject } from 'react';
import { AsyncValidator, Validator } from '@gecogvidanto/shared';
export interface ValidationEvent<T = Element> {
    valid: boolean;
    target: T;
}
interface FieldElement extends Element {
    value: string;
}
interface InputProps<T extends FieldElement> {
    validators?: Validator[];
    asyncValidators?: AsyncValidator[];
    onValidate?: (event: ValidationEvent<T>) => void;
}
interface OutputProps<T extends FieldElement> {
    fieldRef: MutableRefObject<T | undefined>;
    onChange: () => void;
    onBlur: () => void;
    errors: string[] | undefined;
}
/**
 * The field validator can be used to validate the content of a field against given validators. The
 * validation event is sent at mount and update if the field is valid, so that it can be considered invalid
 * until event received. **Note** that the component using this hook must be an observer.
 *
 * @param (unnamed) - Validation parameters.
 * @param (unnamed).validators - The synchronous validators.
 * @param (unnamed).asyncValidators - The asynchronous validators.
 * @param (unnamed).onValidate - Function to call when valid state changes.
 * @returns The output properties.
 */
export default function useFieldValidator<T extends FieldElement>({ validators, asyncValidators, onValidate, }: InputProps<T>): OutputProps<T>;
export {};