How to stop process in nodejs code example

Example 1: node js quit

process.exit();

Example 2: how to stop a node server from running

ps aux | grep node

kill -9 PROCESS_ID

Example 3: end code nodejs

process.exit()

Example 4: 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