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npm install <package_name>. This will create the node_modules directory in your current directory (if one doesn't exist yet) and will download the package to that directory. Note: If there is no package.json file in the local directory, the latest version of the package is installed.
To publish and install packages to and from the public npm registry or a private npm registry, you must install Node.js and the npm command line interface using either a Node version manager or a Node installer. We strongly recommend using a Node version manager like nvm to install Node.js and npm.
npm install <alias>@npm:<name>: Install a package under a custom alias. Allows multiple versions of a same-name package side-by-side, more convenient import names for packages with otherwise long ones, and using git forks replacements or forked npm packages as replacements.
To publish and install packages to and from the public npm registry, you must install Node.js and the npm command line interface using either a Node version manager or a Node installer.
You can add a package.json file to your package to make it easy for others to manage and install. Packages published to the registry must contain a package.json file. A package.json file: lists the packages your project depends on; specifies versions of a package that your project can use using semantic versioning rules
A lot of packages have one or more executable files that they'd like to install into the PATH. npm makes this pretty easy (in fact, it uses this feature to install the "npm" executable.) To use this, supply a bin field in your package.json which is a map of command name to local file name.
Workspaces is a generic term that refers to the set of features in the npm cli that provides support to managing multiple packages from your local files system from within a singular top-level, root package.
Updating Globally-Installed Packages. npm update -g will apply the update action to each globally installed package that is outdated -- that is, has a version that is different from wanted. Note: Globally installed packages are treated as if they are installed with a caret semver range specified.
The "scripts" property of your package.json file supports a number of built-in scripts and their preset life cycle events as well as arbitrary scripts. These all can be executed by running npm run-script <stage> or npm run <stage> for short.
The main differences between using npm install and npm ci are: The project must have an existing package-lock.json or npm-shrinkwrap.json. If dependencies in the package lock do not match those in package.json, npm ci will exit with an error, instead of updating the package lock.
