A simple NodeJS App debugging example in VS Code using Nodemon.

Debugging.md

NodeJS debugging in VS Code with Nodemon

A simple NodeJS App debugging example in VS Code using Nodemon.

Note: Feel free to customize .vscode/launch.json and ./nodemon.json files.

Install

yarn add nodemon --dev

Debugging

Add debug to your package.json script section:

+ "debug": "nodemon --debug server.js",

Run Nodemon:

yarn debug

Finally, select the attach configuration before in your VS Code and go to Debug > Start debugging F5

⚡️ Enjoy!

launch.json

{
  "version": "1.0.0",
  "configurations": [
    {
      "type": "node",
      "request": "launch",
      "name": "Launch",
      "cwd": "${workspaceFolder}",
      "runtimeExecutable": null,
      "args": [],
      "stopOnEntry": false,
      "runtimeArgs": [ "--nolazy" ],
      "preLaunchTask": null,
      "env": {
        "NODE_ENV": "development",
        "LOG_LEVEL": "debug"
      },
      "console": "internalConsole",
      "program": "${workspaceFolder}/server.js",
      "outFiles": []
    },
    {
      "type": "node",
      "request": "attach",
      "name": "Attach",
      "port": 5858,
      "address": "localhost",
      "restart": false,
      "sourceMaps": false,
      "outFiles": [],
      "localRoot": "${workspaceFolder}",
      "remoteRoot": null
    }
  ]
}

nodemon.json

{
  "env": {
    "TZ": "UTC",
    "NODE_ENV": "development",
    "LOG_LEVEL": "debug"
  },
  "watch": [ "./src" ],
  "ext": "js",
  "signal": "SIGTERM"
}

nodemon.ts.json

{
  "env": {
    "TZ": "UTC",
    "NODE_ENV": "development",
    "LOG_LEVEL": "debug"
  },
  "watch": [
    "src"
  ],
  "ext": "ts",
  "ignore": [
    "src/**/*.spec.ts"
  ],
  "signal": "SIGTERM",
  "exec": "npm run lint && ts-node -r tsconfig-paths/register src/main.ts"
}

what about if the code is written in Typescript?

@winuxue It's already supported via nodemon too.
Checks the following link:
microsoft/vscode#10560

Bonus:
https://github.com/Microsoft/vscode-recipes/

👍