Hi,
I'm working on a little server using your framework, following the examples (state-handler). All went well expect when I try to connect with a client from colyseus.js

import {Room, Client} from "colyseus.js";
const client = new Client("ws://" + config.me.host + ":" + config.me.port);

With same host and port for server obviously,
I have the following error :

D:\Documents\Devs\BattleArena\GameManager\node_modules\@gamestdio\websocket\lib\index.js:70
 */WebSocketClient.CONNECTING=WebSocket.CONNECTING;/**
                              ^
ReferenceError: WebSocket is not defined
    at Object.<anonymous> (D:\Documents\Devs\BattleArena\GameManager\node_modules\@gamestdio\websocket\lib\index.js:70:31)
    at Module._compile (module.js:635:30)
    at Module.replacementCompile (D:\Documents\Devs\BattleArena\GameManager\node_modules\nyc\node_modules\append-transform\index.js:58:13)
    at module.exports (D:\Documents\Devs\BattleArena\GameManager\node_modules\nyc\node_modules\default-require-extensions\js.js:8:9)
    at Object.<anonymous> (D:\Documents\Devs\BattleArena\GameManager\node_modules\nyc\node_modules\append-transform\index.js:62:4)
    at Module.load (module.js:554:32)
    at tryModuleLoad (module.js:497:12)
    at Function.Module._load (module.js:489:3)
    at Module.require (module.js:579:17)
    at require (internal/module.js:11:18)
    at Object.<anonymous> (D:\Documents\Devs\BattleArena\GameManager\node_modules\colyseus.js\lib\Connection.js:13:19)
    at Module._compile (module.js:635:30)
    at Module.replacementCompile (D:\Documents\Devs\BattleArena\GameManager\node_modules\nyc\node_modules\append-transform\index.js:58:13)
    at module.exports (D:\Documents\Devs\BattleArena\GameManager\node_modules\nyc\node_modules\default-require-extensions\js.js:8:9)
    at Object.<anonymous> (D:\Documents\Devs\BattleArena\GameManager\node_modules\nyc\node_modules\append-transform\index.js:62:4)
    at Module.load (module.js:554:32)
    at tryModuleLoad (module.js:497:12)
    at Function.Module._load (module.js:489:3)
    at Module.require (module.js:579:17)
    at require (internal/module.js:11:18)
    at Object.<anonymous> (D:\Documents\Devs\BattleArena\GameManager\node_modules\colyseus.js\lib\Client.js:5:20)
    at Module._compile (module.js:635:30)
    at Module.replacementCompile (D:\Documents\Devs\BattleArena\GameManager\node_modules\nyc\node_modules\append-transform\index.js:58:13)
    at module.exports (D:\Documents\Devs\BattleArena\GameManager\node_modules\nyc\node_modules\default-require-extensions\js.js:8:9)
    at Object.<anonymous> (D:\Documents\Devs\BattleArena\GameManager\node_modules\nyc\node_modules\append-transform\index.js:62:4)
    at Module.load (module.js:554:32)
    at tryModuleLoad (module.js:497:12)
    at Function.Module._load (module.js:489:3)
    at Module.require (module.js:579:17)
    at require (internal/module.js:11:18)
    at Object.<anonymous> (D:\Documents\Devs\BattleArena\GameManager\node_modules\colyseus.js\lib\index.js:4:16)
    at Module._compile (module.js:635:30)
    at Module.replacementCompile (D:\Documents\Devs\BattleArena\GameManager\node_modules\nyc\node_modules\append-transform\index.js:58:13)
    at module.exports (D:\Documents\Devs\BattleArena\GameManager\node_modules\nyc\node_modules\default-require-extensions\js.js:8:9)
    at Object.<anonymous> (D:\Documents\Devs\BattleArena\GameManager\node_modules\nyc\node_modules\append-transform\index.js:62:4)
    at Module.load (module.js:554:32)
    at tryModuleLoad (module.js:497:12)
    at Function.Module._load (module.js:489:3)
    at Module.require (module.js:579:17)
    at require (internal/module.js:11:18)
    at Object.<anonymous> (D:\Documents\Devs\BattleArena\GameManager\tests\room\battle.room.test.ts:4:1)
    at Module._compile (module.js:635:30)
    at Module.m._compile (D:\Documents\Devs\BattleArena\GameManager\node_modules\ts-node\src\index.ts:400:23)
    at Module.replacementCompile (D:\Documents\Devs\BattleArena\GameManager\node_modules\nyc\node_modules\append-transform\index.js:58:13)
    at module.exports (D:\Documents\Devs\BattleArena\GameManager\node_modules\nyc\node_modules\default-require-extensions\js.js:8:9)
    at D:\Documents\Devs\BattleArena\GameManager\node_modules\nyc\node_modules\append-transform\index.js:62:4
    at Object.require.extensions.(anonymous function) [as .ts] (D:\Documents\Devs\BattleArena\GameManager\node_modules\ts-node\src\index.ts:403:12)
    at Module.load (module.js:554:32)
    at tryModuleLoad (module.js:497:12)
    at Function.Module._load (module.js:489:3)
    at Module.require (module.js:579:17)
    at require (internal/module.js:11:18)
    at D:\Documents\Devs\BattleArena\GameManager\node_modules\mocha\lib\mocha.js:250:27
    at Array.forEach (<anonymous>)
    at Mocha.loadFiles (D:\Documents\Devs\BattleArena\GameManager\node_modules\mocha\lib\mocha.js:247:14)
    at Mocha.run (D:\Documents\Devs\BattleArena\GameManager\node_modules\mocha\lib\mocha.js:576:10)
    at Object.<anonymous> (D:\Documents\Devs\BattleArena\GameManager\node_modules\mocha\bin\_mocha:637:18)
    at Module._compile (module.js:635:30)
    at Module.replacementCompile (D:\Documents\Devs\BattleArena\GameManager\node_modules\nyc\node_modules\append-transform\index.js:58:13)
    at module.exports (D:\Documents\Devs\BattleArena\GameManager\node_modules\nyc\node_modules\default-require-extensions\js.js:8:9)
    at Object.<anonymous> (D:\Documents\Devs\BattleArena\GameManager\node_modules\nyc\node_modules\append-transform\index.js:62:4)
    at Module.load (module.js:554:32)
    at tryModuleLoad (module.js:497:12)
    at Function.Module._load (module.js:489:3)
    at Function.Module.runMain (module.js:676:10)
    at runMain (C:\Users\Valentin\.node-spawn-wrap-34680-266e6ebd9028\node:68:10)
    at Function.<anonymous> (C:\Users\Valentin\.node-spawn-wrap-34680-266e6ebd9028\node:171:5)
    at Object.<anonymous> (D:\Documents\Devs\BattleArena\GameManager\node_modules\nyc\bin\wrap.js:23:4)
    at Module._compile (module.js:635:30)
    at Object.Module._extensions..js (module.js:646:10)
    at Module.load (module.js:554:32)
    at tryModuleLoad (module.js:497:12)
    at Function.Module._load (module.js:489:3)
    at Function.Module.runMain (module.js:676:10)
    at C:\Users\Valentin\.node-spawn-wrap-34680-266e6ebd9028\node:178:8
    at Object.<anonymous> (C:\Users\Valentin\.node-spawn-wrap-34680-266e6ebd9028\node:181:3)
    at Module._compile (module.js:635:30)
    at Object.Module._extensions..js (module.js:646:10)
    at Module.load (module.js:554:32)
    at tryModuleLoad (module.js:497:12)
    at Function.Module._load (module.js:489:3)
    at Function.Module.runMain (module.js:676:10)
    at startup (bootstrap_node.js:187:16)
    at bootstrap_node.js:608:3
npm ERR! Test failed.  See above for more details.

I tried to use it in the example and I have the same problem. I tried installing ws, or uws but it changed nothing.

I didn't find anything either on internet about this problem

Does anyone have an idea to solve it ?

Thanks