import * as React from 'react';
import { FieldFeedbacksChildContext } from './FieldFeedbacks';
import { FieldFeedbackValidation } from './FieldFeedbackValidation';
import { FormWithConstraintsChildContext } from './FormWithConstraints';
import { InputElement } from './InputElement';
export declare enum Status {
    None = 0,
    Pending = 1,
    Rejected = 2,
    Resolved = 3
}
export interface AsyncProps<T> {
    promise: (value: string) => Promise<T>;
    pending?: React.ReactNode;
    then?: (value: T) => React.ReactNode;
    catch?: (reason: any) => React.ReactNode;
}
interface AsyncState<T> {
    status: Status;
    value?: T | unknown;
}
export interface AsyncChildContext {
    async: Async<any>;
}
export declare type AsyncContext = FormWithConstraintsChildContext & FieldFeedbacksChildContext;
declare class AsyncComponent<T = any> extends React.PureComponent<AsyncProps<T>, AsyncState<T>> {
}
declare const Async_base: {
    new (...args: any[]): {
        validateFieldEventEmitter: import("./EventEmitter").EventEmitter<[InputElement], FieldFeedbackValidation>;
        emitValidateFieldEvent(input: InputElement): Promise<FieldFeedbackValidation[]>;
        addValidateFieldEventListener(listener: (input: InputElement) => FieldFeedbackValidation | Promise<FieldFeedbackValidation>): void;
        removeValidateFieldEventListener(listener: (input: InputElement) => FieldFeedbackValidation | Promise<FieldFeedbackValidation>): void;
    };
} & typeof AsyncComponent;
export declare class Async<T> extends Async_base implements React.ChildContextProvider<AsyncChildContext> {
    static contextTypes: React.ValidationMap<AsyncContext>;
    context: AsyncContext;
    static childContextTypes: React.ValidationMap<AsyncChildContext>;
    getChildContext(): AsyncChildContext;
    state: AsyncState<T>;
    componentDidMount(): void;
    componentWillUnmount(): void;
    validate: (input: InputElement) => Promise<FieldFeedbackValidation[]> | undefined;
    setStateSync(state: AsyncState<T>): Promise<void>;
    _validate(input: InputElement): Promise<FieldFeedbackValidation[]>;
    render(): React.ReactNode;
}
export {};