$ sudo npm install phosphor-signaling
$ sudo npm install -g phosphor-signaling

If want to update the phosphor-signaling package execute the command as below,

$ sudo npm update phosphor-signaling

Update package globally,

$ npm install -g phosphor-signaling

Git clone:

$ sudo  git clone https://github.com/rektide/phosphor-signaling.git

$ sudo  npm install -g ./phosphor-signaling

phosphor-signaling@1.2.0 /usr/lib/node_modules/phosphor-signaling

How to remove phosphor-signaling package :

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

$ sudo npm uninstall phosphor-signaling

Basic Information of phosphor-signaling NPM Package: