[Node-RED][Archlinux] How to install npm in Archlinux

npm is the package manager for JavaScript.
Install npm
$ sudo pacman -S npm

Getting Started
$sudo npm install -g node-red$ node-red

[happy@localhost ~]$ node-red
9 Mar 11:13:48 - [info] 

Welcome to Node-RED
===================

9 Mar 11:13:48 - [info] Node-RED version: v0.16.2
9 Mar 11:13:48 - [info] Node.js  version: v7.5.0
9 Mar 11:13:48 - [info] Linux 4.8.13-1-ARCH x64 LE
9 Mar 11:13:48 - [info] Loading palette nodes
9 Mar 11:13:48 - [warn] ------------------------------------------------------
9 Mar 11:13:48 - [warn] [rpi-gpio] Info : Ignoring Raspberry Pi specific node
9 Mar 11:13:48 - [warn] ------------------------------------------------------
9 Mar 11:13:48 - [info] Settings file  : /home/freeman/.node-red/settings.js
9 Mar 11:13:48 - [info] User directory : /home/freeman/.node-red
9 Mar 11:13:48 - [info] Flows file     : /home/freeman/.node-red/flows_localhost.json
9 Mar 11:13:48 - [info] Creating new flow file
9 Mar 11:13:48 - [info] Server now running at http://127.0.0.1:1880/
9 Mar 11:13:48 - [info] Starting flows
9 Mar 11:13:48 - [info] Started flows

Open the webpage, and type “http://127.0.0.1:1880/“. Start to create your internet of thing.

---

Want more support function about xbee.
This requires the following npm packages to work properly:

node-red-node-serialport
xbee-api

Install these via npm, inside your node-red directory:
cd  ~/.node-red
npm install node-red-node-serialport xbee-api node-red-contrib-zblight

Reference:

• npm is the package manager for JavaScript
• Node-RED A visual tool for wiring the Internet of Things
• node-red-contrib-zblight
• node-red-node-serialport