Package.json is present in the root directory of any Node application/module and is used to define the properties of a package.

├── can use the following command to check all the modules installed globally − Here, the first line shows the module version and the location where it is getting installed.

This will produce a similar result but the module will be installed globally. Now let's try installing the express module using global installation. Such dependencies can be used in CLI (Command Line Interface) function of any node.js but cannot be imported using require() in Node application directly. Globally installed packages/dependencies are stored in system directory. For example, when we installed express module, it created node_modules directory in the current directory where it installed the express module.ĭrwxr-xr-x 3 root root 20 Mar 17 02:23 node_modulesĪlternatively, you can use npm ls command to list down all the locally installed modules. Locally deployed packages are accessible via require() method. Here local mode refers to the package installation in node_modules directory lying in the folder where Node application is present. Now you can use this module in your js file as following −īy default, NPM installs any dependency in the local mode. There is a simple syntax to install any Node.js module −įor example, following is the command to install a famous Node.js web framework module called express − Just use the following command from root − If you are running an old version of NPM then it is quite easy to update it to the latest version.

To verify the same, open console and type the following command and see the result − NPM comes bundled with Node.js installables after v0.6.3 version.

Online repositories for node.js packages/modules which are searchable on Ĭommand line utility to install Node.js packages, do version management and dependency management of Node.js packages. Node Package Manager (NPM) provides two main functionalities −

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