Debug React app on VSCode

Start server side with 

node --inspect server.js 

debugger will listen on 9229 ..

Create a launch.json for debug

==========

{
// Use IntelliSense to learn about possible attributes.
// Hover to view descriptions of existing attributes.
// For more information, visit: https://go.microsoft.com/fwlink/?linkid=830387
"version": "0.2.0",
"configurations": [
{
"name": "Launch Chrome",
"request": "launch",
"type": "pwa-chrome",
"url": "http://localhost:8015",
"webRoot": "${workspaceFolder}"
},
{
"name": "Attach",
"port": 9229,
"request": "attach",
"skipFiles": [
"<node_internals>/**"
],
"type": "pwa-node"
}
]
}

======================

To do front end debug... install chrome ext on vscode.

start your front end via the npm start or check package.json for run scripts.

Use the above configuration 

It will launch a chrome on 8015. also make sure your front end is started on 8015

...time to debug... you should see breakpoints hitting.... 

you can also add debugger;  in your code , its same as a breakpoint..

var i = "helo";

debugger;                <============== Break point will be activated here...

console.log('value is ' +i)