The installation of Node.js includes a package manager called npm, which is the default and most widely used package manager for installing JavaScript/Node.js libraries.

NPM packages are listed in the NPM registry at https://registry.npmjs.org/, where you can search for packages and even publish your own.

There are other alternatives to NPM as well, such as Yarn, which is compatible with the public NPM registry. You are free to use the package manager of your choice; however, for the purpose of this book, the package manager used in the recipes will be NPM.