Next.js HMR websocket n.write is not a function

[littledivy]

To reproduce:

1. mkdir repro && cd repro
2. deno run -A --unstable npm:degit 'timlrx/tailwind-nextjs-starter-blog'
3. Convert next.config.js to ESM
4. npm i
5. deno run -A --unstable-byonm ./node_modules/.bin/next dev
6. Visit http://localhost:3000

In the wall of errors, you'll find:

Error handling upgrade request TypeError: n.write is not a function
    at WebSocketServer.completeUpgrade (file:///Users/divy/gh/demo/node_modules/next/dist/compiled/ws/index.js:1:31537)
    at WebSocketServer.handleUpgrade (file:///Users/divy/gh/demo/node_modules/next/dist/compiled/ws/index.js:1:30712)
    at HotReloader.onHMR (file:///Users/divy/gh/demo/node_modules/next/src/server/dev/hot-reloader-webpack.ts:365:14)
    at upgradeHandler (file:///Users/divy/gh/demo/node_modules/next/src/server/lib/router-server.ts:579:49)
    at ServerImpl.<anonymous> (file:///Users/divy/gh/demo/node_modules/next/src/server/lib/start-server.ts:176:13)
    at ServerImpl.emit (ext:deno_node/_events.mjs:383:28)
    at handler (node:http:1287:14)
    at ext:deno_http/00_serve.js:460:24
    at ext:deno_http/00_serve.js:694:29
    at eventLoopTick (ext:core/01_core.js:182:7)