npm install express-generator -g
express projectname
cd projectname
npm install
# Run projectname on Windows with Command Prompt
SET DEBUG=projectname:* & npm start
# Run projectname on Windows with PowerShell
SET DEBUG=projectname:* | npm start
# Run projectname on Linux/macOS
DEBUG=projectname:* npm start
https://developer.mozilla.org/en-US/docs/Learn/Server-side/Express_Nodejs/development_environment