CODE EXAMPLE FOR SHELL

install nodemon in express

#nodemon on project
yarn add nodemon -D 
#to run nodemon from any folder
yarn add -g nodemon

#run with nodemon 
nodemon index.js if nodemon install globally 
if you want to run from command used script inside package.json
 "script":{
    "server":"nodemon index.js"
  },

run using yarn run server