How do I require a module using node from the command line?

Question

I'm using Mac OSX. I've installed node via Homebrew. I've installed my library (MomentJS) via npm install -g moment.

When I type node in the command line, I get the NodeJS console, it looks like:

>

Now, let's say I want to use the moment library. If I type:

var moment = require('moment'); 

I get the following error:

Error: Cannot find module 'moment'

How might I configure and require an external library using Node from the command line?

Answer 1

You can execute the following:

npm install moment # module must be installed locally node --require moment 

And enter the following:

var moment = require('moment'); moment().format(); 

From the man page:

-r, --require          module to preload at startup 

According to the source, it appears that node --require will not search for global modules in version 4.2.x and will not raise any errors if the module is installed globally and not locally.