Source: apc-static/lib/minify/minify_css_file.js

/**
 * Minify css file(s)
 * @function lib.minify.minifyCssFile
 * @param {string|string[]} src - Css file name to minify.
 * @param {string} dest - Destination file name.
 * @param {function} callback - Callback when done.
 * @author Taka Okunishi
 *
 */
var _minifyFile = require('./_minify_file'),
    minifyCssString = require('./minify_css_string');

module.exports = function (src, dest, callback) {
    _minifyFile(src, dest, minifyCssString, callback);
};