JustOneJs is a command line utility based on NodeJs.
It reads the html file passed as argument, it extracts all the scripts linked in the html and then minifies all the files into ONE javascript file, easy to upload and mantain.
The html parsing is done with Cheerio and the compression is done with UglifyJS 2
This is just for fast prototyping and simple apps, use Grunt, Gulp or other automation tool for serious things...
git clone https://github.com/sanjeyac/justonejs.git npm install nodejs justone.js
an output file will be created 'all.libs.js'