When utilizing npm for installing packages, developers typically employ the following command:
1npm install <package_name>
For instance, to install the popular lodash package, one would execute:
1npm install lodash
This command downloads the lodash package and adds it to the project's dependencies, enabling its usage within the application.
Unlike npm, which is focused on package management, npx is designed to execute Node.js packages. It comes bundled with npm starting from version 5.2.0 and allows users to run packages without having to install them globally. npx is particularly advantageous when working with packages that are not frequently used or require specific versions.
To run a package using npx, developers can simply type:
For example, to create a new React app using Create React App without needing to install it globally, one would run:
1npx create-react-app my-app
In this scenario, npx downloads create-react-app on-the-fly and executes it directly, eliminating the need for a global installation.
The primary disparity between npm and npx lies in their core functionality. npm is dedicated to package installation and management, while npx focuses on the execution of packages.
npm installs packages either globally (accessible across the system) or locally (limited to a specific project directory), whereas npx operates within a local context, executing packages without the need for global installation.
When using npm to execute a package, it relies on the globally installed version, potentially leading to version conflicts. On the other hand, npx ensures that the latest version of the package is fetched and executed, preventing version mismatch issues.