funcunit/site/node_modules/steal-tools/test/css_paths/main.js

<!-- @hide title

import 'folder/main.less!';
import 'folder/main.css!';
import 'style.css!';

function getFile(url, cb) {
	var xhr = new XMLHttpRequest();
	xhr.open("GET", url, true);
	xhr.send(null);
	xhr.onreadystatechange = function(){
		if(xhr.readyState === 4) {
			cb(xhr.responseText);
		}
	};
}
var links = document.getElementsByTagName('link');

if(links.length) {
	getFile(document.getElementsByTagName('link')[0].href, function(content){
		window.STYLE_CONTENT =  content;
	});
}