how to stop process working on a port code example

Example 1: stop port

kill -9 $(sudo lsof -t -i:'portName')
//Ex. if portname is 3000
//then we will execute "kill -9 $(sudo lsof -t -i:3000)"

Example 2: stop task on port

npx kill-port 8080

Example 3: stop localhost server

netstat -ano | findstr :yourPortNumber
tskill typeyourPIDhere