How to Automate express Projects with gulp

  node.js, question

I used grunt before and wanted to change it to gulp, but gulp and express related gulpfile cannot be found on the Internet. I want to realize that any file change in the project can be monitored in real time and app.js can be restarted. How do I do this?

This was done before in grunt

nodemon:{

dev:{
 scripts:'app.js',
 options:{
 args:[],
 ignoredFiles:['README.md','node_modules/**','DS_Store'],
 watchedExtensions:['js'],
 watchedFolders:['./'],
 debug:true,
 delayTime:1,
 env:{
 PORT:3000
 },
 cwd:__dirname
 bracket
 bracket
 },

Find the plug-in that nodemon corresponds to gulp.