How to stop npm serve

I had the same problem using serve to serve the production build of my react app (built from create-react-app).

I was able to finally kill it by using serve again somewhere else on my filesystem (like my home directory and then killing it with: Ctrl + c.

You can do something like this to kill your react app being served by serve:

> cd ~
> serve

And then use Ctrl + c

Then go to http://localhost:5000 to confirm nothing is being served.

You can use the command below:

$ killall -9 node

I had the same problem when using serve for production build. I terminated the port instead of stopping Serve.

sudo fuser -k <portno>/tcp

You can stop the process on the console like any other process: Ctrl + c.

See https://superuser.com/questions/103909/how-to-stop-a-process-in-terminal