Npm-offline-registry NPM

Supper simple NPM registry server for offline NPM install

Usage

install this npm mpdule
npm i harish2704/npm-offline-registry
Run local npm-registry server
npm-offline-registry OR node node_modules/.bin/npm-offline-registry
Now the server will run on http://localhost:8234
use http://localhost:8234/ as registry while doing npm install
- use command npm-offline-install instead of npm install if you need to install packages offline. This is just a wrapper cli which will run npm i with --registry option set
- Advanced usage
  - Either use npm install --registry http://localhost:8234/ [package-name]...
  - Or permanently set config variable npm config set registry http://localhost:8234/

NOTE: default port can be changed by setting PORT environment variable

How it is working?

When ever we do npm install in normal condition, the npm tool will keep a cache directory of the files which was downloaded by npm tool.
Default location of this cache directory is ~/.npm for UNIX machines
npm-offline-registry tool will serve the requests using the cached versions of the files.
If a package/version is not found on cache, it is fetched from main npm registry. Then is properly inserted in to npm's cache directory.

Dependencies

Currently this tool is using following unix commands to manipulate npm's cache directory.

wget for downloading the content from main npm registry
mkdir with -p option
tar command with gzip uncompresion

I believe all the above said tools will be available in a typical UNIX machine.

Configurations

Please check config.js. All config values can be over-written by environment-variables

Suggestion for desktop users

make sure that, Some process manager tool ( Lets say pm2 is available in your PATH )
install npm-offline-registry globally ( Or add your $HOME/node_modules/.bin to PATH variable )
Add this start-up command to your "start up applications" pm2 start npm-offline-registry
Then you can use the command npm-offine-install at any time duting the desktop-session without any hassle

Using npm-offline-registry as a completely isolated registry

If you set the ENABLE_NPM_FAILOVER config value to false then npm-offlin-registry will not attempt to contact the upstream NPM registry for unknown packages and instead return a 404 response, meaning you can use it as an alternative to the NPM registry behind a firewall / isolated from the internet.

Enabling strict mode

If config value STRICT is set to true, while npm checks for the available versions of a given packages, registry server will reply with list of cached versions. In this case, if the version is not previously cached, npm-offline-install will fail with, error message version not available

example