How to install npm package while offline?

I'm working on an offline network and want to install angular-cli using npm. I have a zip file of angular-cli and using the latest node and npm version. I'm using the command: npm install ./angular-cli-master to install angular-cli from the folder. But I keep getting this error telling me I don't have an internet connection (which is ok). So how can I install this angular-cli while offline using the zip I downloaded from Github?

Thanks for your help.

You simply copy the package and all dependencies in your node_modules folder, inside the project for local installation, or in the global folder (npm config get prefix to see where it is located) for a global installation.

The behavior of npm install is to check for the dependencies, and install them first. When it doesn't find them installed, nor the local file containing them, it tries to download them.

Since all of those steps fail (you don't have the dependency installed, it isn't available on the expected location, and it can't download it), the installation fails.

You can find the dependency list in the package.json of each module, but since it is recursive, it can take a long time to have everything set right if you do it manually, npm does it by recursion.

For you, the easiest way would be to create a new folder on the connected PC, and inside it npm install angular-cli, zip the folder and transfer it on the offline machine.

Jan 2016 - check out Addy Osmani's recommendations for offline installation of npm packages

May 2017 - as of npm 5, you can pass the --prefer-offline flag to npm install

yarn does this out of the box.