copy-cli/lib/minify-css.js

A CLI tool for copying files, with optional CSS/JS minification.

'use strict';
var CleanCSS = require('clean-css');

module.exports = function (data) {
	var result = new CleanCSS({
		processImport: false,
		rebase: false,
		roundingPrecision: 5,
		advanced: true,
		aggressiveMerging: false,
		restructuring: false,
		shorthandCompacting: false
	}).minify(data);
	
	if (result.errors[0]) {
		throw new Error(result.errors[0]);
	}
	
	return result.styles;
};