How to debug a nodemon project in VSCode

Question

I have a NodeJs project and I run it using nodemon,
I wish to run it in debug mode for development tasks, but I am unable to do so.

I found that I\'ll need to ad

Answer 1

I ran into a similar issue attaching to a Dockerized nodemon process. I found the solution in this article. I was able to get it working by changing three things:

1. Added --inspect=0.0.0.0 to the npm script that launched the service (named debug in my case):

  "scripts": {
    "debug": "nodemon -w lib -w server.js --inspect=0.0.0.0 server.js"
  }

2. Making sure port 9229 (or whatever debug port you wish to use) is open in the Docker container. I'm using docker-compose, so it's defined in the associated yaml:

ports:
  - "8080:8080"
  - "9229:9229"

3. Adding the following configuration to launch.json in VS Code:

    "configurations": [
        {
            "name": "Attach to Node in Docker",
            "type": "node",
            "address": "localhost",
            "port": 9229,
            "request": "attach",
            "restart": true
        }
    ]

The "restart": true option allows the debugger to automatically reattach when nodemon recompiles things after a watched file changes.