NodeJs Debugging options

Chrome browser supports great ways to debug, break points, watch and more the same way you do inspecting the browser javascript.

1. Fast Debugging: User node --inspect filename (Devtool GUI)

> node --inspect myserver.js

This will give you a link to a devtool session some thing looks like below

chrome-devtools://devtools/remote/serve_file/@60cd6e859b9f557d2312f5bf532f6aec5f284980/inspector.html?experiments=true&v8only=true&ws=127.0.0.1:9229/cd33
a427-37a4-4d96-b3f6-13ed4cbc870f

Server is listening on port: 2403

you just copy this and paste in a new tab in chrome browser , It opens up the devtool. (this is only debugging window. It doesn't start your application)
Now you open a browser window or what ever ways you want to access your application , make the first call.

You can use F8 (Run) , F10 (skip) , F11 (step into) keys on Windows to step through the code.

Note: Some times the devtool session hangs in the memory somewhere. So , restart and you will get a new link with new session id.

*** Make sure Chrome devtool -> settings debugger is not disabled (checked)
Debugger

Disable JavaScript

DevTools

Auto-open DevTools for popups

2. Use Devtool npm package. (That again launches Chrome Devtool Console UI)

> npm install devtool -g

Then,

> devtool server.js - This launches the Chrome Devtool console.

3. Inbuilt in NodeJS : 'debug' argument

> node debug server.js

This is very manual - for example,

To add and stop at a break point you have to add 'debugger' statement inside your source code! (I know you don't want to. )

4. Visual Code

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