This is a simple library for randomly transforming the capitalization of all letters in a string.
In order to install the random-case library just run:
npm install --save random-case
var randomCase = require('random-case');
randomCase('testString'); // Outputs something like: tEsTSrinG
I created this library just for fun and I can't imagine how this could be useful for you. But if you do find it useful, please feel free to use it and modify it as you wish.