What is the difference between npm install and npm install --save?

What is the difference between npm install and npm install --save?

The command 'npm install' installs a package, but without the --save flag, it won't add it to your package.json.

So, if I use npm install --save, what happens?

Using --save will install the package and also add it to the dependencies in your package.json file.

Is there a difference between --save and --save-dev?

Yes, --save-dev installs the package as a development dependency, meaning it's only needed during development.

When should I use --save-dev instead of --save?

Use --save-dev for packages that are only needed for development, like testing frameworks or build tools.