Question: 1. Node is Updated to latest stable version v7.4.0

This is the error message I get when trying to install browser-sync: 

```
sudo npm install -g browser-sync

```

> 
> 'npm ERR! Linux 4.4.0-59-generic npm ERR! argv "/usr/local/bin/node"
>  "/usr/local/bin/npm" "install" "-g" "browser-sync" npm ERR! node
>  v7.4.0 npm ERR! npm v4.0.5 npm ERR! code MODULE\_NOT\_FOUND
> 
> 
> npm ERR! Cannot find module 'internal/fs' npm ERR! npm ERR! If you
>  need help, you may report this error at: npm ERR!  
> 
> <https://github.com/npm/npm/issues>
> 
> 
> npm ERR! Please include the following file with any support request:
>  npm ERR! /home/pedro/npm-debug.log '
> 
> 
>

Answer: 
I have Solved the issue: 

NPM Module was not supported by node v7:

So I downgraded to node v6.4.0 and it allowed me install browser-sync with no problems!

```
    sudo npm cache clean -f
    sudo npm install -g n
    sudo n 6.9.5

```
You're going to need to upgrade `npm` also (currently `npm@next` – `npm -g install npm@next` if you have it installed globally.