$ sudo npm install graphql-subscriptions
$ sudo npm install -g graphql-subscriptions

If want to update the graphql-subscriptions package execute the command as below,

$ sudo npm update graphql-subscriptions

Update package globally,

$ npm install -g graphql-subscriptions

Git clone:

$ sudo  git clone https://github.com/rektide/graphql-subscriptions.git

$ sudo  npm install -g ./graphql-subscriptions

graphql-subscriptions@0.5.5 /usr/lib/node_modules/graphql-subscriptions

How to remove graphql-subscriptions package :

You can uninstall or remove this package from your node_modules run the command as below,

$ sudo npm uninstall graphql-subscriptions

Basic Information of graphql-subscriptions NPM Package: