DefinitelyTyped/types/redux-socket.io/index.d.ts

// Type definitions for redux-socket.io 1.4
// Project: https://github.com/itaylor/redux-socket.io#readme
// Definitions by: Igor Voropaev <https://github.com/snakeego>
// Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped

/// <reference types="socket.io-client" />

import { Middleware, Action, Dispatch } from 'redux';

export interface MiddlewareOptions {
    eventName?: string;
    execute?: <S>(action: Action, emitBound: SocketIOClient.Socket, next: Dispatch<S>, dispatch: Dispatch<S>) => any;
}

export default function createSocketIoMiddleware(
    socket: SocketIOClient.Socket,
    criteria: (string | ReadonlyArray<string> | ((type: string, action: Action) => boolean)),
    options?: MiddlewareOptions
): Middleware;