Node.jsNPM modules installed but command not recognized

Why might Node.js NPM modules appear to be installed correctly, but the commands are not recognized when trying to execute them in the terminal or command prompt?

There are a few common reasons why Node.jsNPM modules might appear to be installed correctly, but the commands are not recognized when trying to execute them in the terminal or command prompt:

PATH Environment Variable:

Issue: The most common cause is that the path to the Node.jsand NPM executables is not included in your system's PATH environment variable.

Solution: Ensure that the path to the Node.jsinstallation directory (e.g., C:\Program Files\nodejs) is added to your PATH variable. You can do this by:

Right-clicking on "This PC" or "My Computer" and selecting "Properties."

Clicking on "Advanced system settings" and then "Environment Variables."

Under "System variables," find the PATH variable and click "Edit."

Add the path to the Node.jsdirectory.

Incorrect Installation:

Issue: The Node.jsand NPM installation might have encountered errors or not completed successfully.

Solution: Reinstall Node.jsand NPM from the official website to ensure a proper installation.

Command Line Access:

Issue: The command line might not have been restarted after installing Node.jsand NPM.

Solution: Restart your terminal or command prompt after installation to apply the changes.

Permissions Issues:

Issue: There might be permission issues preventing the execution of NPM commands.

Solution: Run the command prompt as an administrator to ensure you have the necessary permissions.

Incorrect Node.jsVersion:

Issue: Using an incompatible version of Node.jsor NPM might cause issues.

Solution: Ensure you are using compatible versions of Node.jsand NPM for your project.