Answers for "How to stop process in nodejs"

node js quit

process.exit();

how to stop a node server from running

ps aux | grep node

kill -9 PROCESS_ID

end code nodejs

process.exit()

stop npm server cmd

ps aux | grep node 
#The last record is for grep and it is not victime 
#You should kill the processes who are running ".../react-scripts start"

sudo kill -9 process_id