npm-info.txt

npm: Node Package Manager

npm - global command, comes with node
npm --version


local dependency - use it only in this particular project
npm i <packageName>
npm i <packageName> -D or npm i <packageName> --save-dev (to install packages as dev dependencies)


global dependency - use it in any project
npm install -g <packageName>
sudo npm install -g <packageName> (mac)


package.json - manifest file (stores important info about project/package)
manual approach (create package.json in the root, create properties etc)
npm init (step by step, press enter to skip)
npm init -y (everything default)


How to uninstall a package
1) npm uninstall packageName
2) delete node_modules and package-lock.json and the dependency from package.json and then run 'npm install' to reinstall other dependencies



npx enables us to use local dependencies as global
npm install -g npx
to run the app as global: npx packageName app.js