Attach Vscode Debug to Firebase functions

Firebase VSCode Debugger

0. Create a launch.json file by with vscode using the Debugger.
1. install npm i -g firebase-tools.
2. Add the following json to .vscode/launch.json
	{
	  "version": "0.2.0",
	  "configurations": [
		{
		  "type": "node",
		  "request": "attach",
		  "name": "Attach",
		  "port": 9229,
		  "restart": true,
		  "skipFiles": ["<node_internals>/**"]
		}
	  ]
	}
 3. run the emulator: firebase emulators:start --inspect-functions
 4. Attach the debugger by clicking the play button.
 5. Enjoy 😀.