express-ws alternative in TypeScript

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I have been searching for a few days now but still haven’t found any alternative or help writing a TypeScript Declaration for it as I also tried that.

https://www.npmjs.com/package/express-ws

Important is that it works with any other route in express. Authentication, Roles and Path Parameters.


Typings for express-ws have now been created.

The tests show how to use it:

import expressWs from 'express-ws';
const { app, getWss, applyTo } = expressWs(express());

Or:

const app = expressWs(express()).app;

Then for example when declaring routes rather than writing:

const myRoutes = function(app: Express) {...}

You need to specify the express-ws type:

import expressWs from 'express-ws';
const myRoutes = function(app: expressWs.Application) {...}

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The only problem is that Router type has no ws(...) method. Add

export interface RouterWs extends express.Router {
  ws (route: string, ...cb): RouterWs; 
}

Then later when getting Router just cast it as your type.

const router = express.Router() as RouterWs;
router.ws('/somepath', (ws, req) => {...

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Thanks Derek Hill and Normunds Kalnberzins

Works with routers is better

First import express-ws

import expressWs from 'express-ws';

To use the ws method, you need to strengthen express (I understand it this way)

const { app, getWss, applyTo } = expressWs(express());

after that express.Router contains the ws method, but the type of the typescript is wrong, you only need to convert the type.

const router = express.Router() as expressWs.Router;

Define the routing logic

router.ws('/echo', (ws, req) => {
    ws.on('message', (msg: String) => {
        ws.send(msg);
    });
});

Finally add router to the express app

app.use("/ws-stuff", router);

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@Zugwait's answer is correct. req.param() is deprecated. You should use req.params, req.query or req.body.. But just to make it clearer: req.params will be populated with only the route values.