Discussion on: 5 Steps to debugging Next.js/Node.js from VSCode or Chrome DevTools

[pom421]

Thanks for the quick answer.

This is the package.json after npx create-next-app:

{
"name": "test",
"version": "0.1.0",
"private": true,
"scripts": {
"dev": "NODE_OPTIONS='--inspect' next dev",
"build": "next build",
"start": "next start"
},
"dependencies": {
"next": "9.3.1",
"react": "16.13.1",
"react-dom": "16.13.1"
}
}

Everything seems up to date, yet :

yarn dev

yarn run v1.22.0
$ NODE_OPTIONS='--inspect' next dev
Debugger listening on ws://127.0.0.1:9229/dc491c88-ca40-47d2-8568-26ea554a4ae4
For help, see: https://nodejs.org/en/docs/inspector
[ wait ] starting the development server ...
[ info ] waiting on http://localhost:3000 ...
Starting inspector on 127.0.0.1:9229 failed: address already in use
Starting inspector on 127.0.0.1:9229 failed: address already in use
Starting inspector on 127.0.0.1:9229 failed: address already in use

And when I inspect for the port 9229, nothing is bound to.
lsof -nP -iTCP:9229 | grep LISTEN -> no line

[Vincent Voyer]

Hey there, can you try with next@9.2? I know this version was working because I used the debugging on it.

[pom421]

Good guess! It works with Next 9.2.0 and not in 9.3.1...

I will wait for your PR to be merged so, because I don't want to downgrade the version for this only debug need.

Thanks for your help!