import React from 'react';
import { CancelablePromise } from './util';
import Form from './Form';
export declare const eventNames: {
    readonly stateChange: "state change";
    readonly valueChange: "value change";
    readonly change: "change";
    readonly unset: "unset";
    readonly focus: "focus";
    readonly blur: "blur";
    readonly startValidate: "start validate";
    readonly validate: "validate";
};
export declare type FieldEventName = typeof eventNames[keyof typeof eventNames];
export declare type Validator = (value: any, fields: {
    [key: string]: Field<any>;
}) => void;
export declare type FieldOpts<Value> = {
    name?: string;
    node?: HTMLInputElement;
    value?: Value;
    validate?: Validator[];
    readOnly?: boolean;
    validationDelay?: number;
};
export declare type State<Value> = {
    value: Value;
    error: any;
    isChanged: boolean;
    isValidating: boolean;
    isValidated: boolean;
    isValid: boolean;
};
declare class Field<Value> {
    form?: Form<any>;
    name?: string;
    opts?: FieldOpts<Value>;
    node?: HTMLInputElement;
    validators: Validator[];
    readOnly: boolean;
    debounceValidate: Function;
    state: State<Value>;
    props: {
        ref: (node: HTMLInputElement) => void;
        onChange: (event: React.ChangeEvent<HTMLInputElement>) => void;
        onFocus: (event: FocusEvent | React.FocusEvent<HTMLInputElement>) => void;
        onBlur: (event: FocusEvent | React.FocusEvent<HTMLInputElement>) => void;
    };
    private _events;
    private _initialValue;
    private _cancelablePromise;
    static modifyValue(value: any): any;
    constructor(opts?: FieldOpts<Value>, form?: Form<any>);
    setState(values: Partial<State<Value>>): void;
    setRef(node: HTMLInputElement): void;
    unsetRef(): void;
    private handleFocus;
    private handleBlur;
    set(value: any, opts?: {
        silent: boolean;
    }): void;
    unset(): void;
    setError(error: any): void;
    validate: () => CancelablePromise;
    on(eventName: FieldEventName, handler: Function): void;
    off(eventName: FieldEventName, handler: Function): void;
}
export default Field;
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