Installation

npm install --save @types/express-ws

Summary

This package contains type definitions for express-ws (https://github.com/HenningM/express-ws).

Details

Files were exported from https://github.com/DefinitelyTyped/DefinitelyTyped/tree/master/types/express-ws.

index.d.ts

import express = require("express");
import * as core from "express-serve-static-core";
import * as http from "http";
import * as https from "https";
import ws = require("ws");

declare module "express" {
    function Router(options?: RouterOptions): expressWs.Router;
}

declare function expressWs(
    app: express.Application,
    server?: http.Server | https.Server,
    options?: expressWs.Options,
): expressWs.Instance;
declare namespace expressWs {
    type Application = express.Application & WithWebsocketMethod;
    type Router = express.Router & WithWebsocketMethod;

    interface Options {
        leaveRouterUntouched?: boolean | undefined;
        wsOptions?: ws.ServerOptions | undefined;
    }

    interface RouterLike {
        get: express.IRouterMatcher<this>;
        [key: string]: any;
        [key: number]: any;
    }

    interface Instance {
        app: Application;
        applyTo(target: RouterLike): void;
        getWss(): ws.Server;
    }

    type WebsocketRequestHandler = (ws: ws.WebSocket, req: express.Request, next: express.NextFunction) => void;
    type WebsocketMethod<T> = (route: core.PathParams, ...middlewares: WebsocketRequestHandler[]) => T;

    interface WithWebsocketMethod {
        ws: WebsocketMethod<this>;
    }
}

export = expressWs;

Additional Details

Last updated: Fri, 24 Oct 2025 04:02:41 GMT
Dependencies: @types/express, @types/express-serve-static-core, @types/ws

Credits

These definitions were written by AJ Livingston.

Current Tags

7 Versions

3.0.6 ... 6 months ago
3.0.5 ... 2 years ago
3.0.4 ... 2 years ago
3.0.3 ... 2 years ago
3.0.2 ... 3 years ago
3.0.1 ... 5 years ago
3.0.0 ... 8 years ago