How to kill server when seeing EADDRINUSE: address already in use

Kill Server on MAC when EADDRINUSE. This happens when the server is already running.

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How to kill the process manually when you are unable to restart the localhost server. First we need to determine what process it is

So we will see what is running on the port for this example we will use 8080

⇒ lsof -i tcp:8080

This outputs the following

COMMAND  PID          USER   FD   TYPE             DEVICE SIZE/OFF NODE NAME
node    3693 abrahamgarcia   23u  IPv6 0x175b797434a9239d      0t0  TCP *:http-alt (LISTEN)

We now see that Process is 3693 we will know to run this command to terminate it. 

kill -9 3693

and that is it. 

Enjoy!