var potions = require('potions');

potions(mix => {
    mix.js(['app.js'], 'app.js') // ES2015 transpiling and CommonJS/ES2015 module bundling
       .sass(['app.scss'], 'app.css') // Autoprefix and compile Sass
       .styles(['vendor/library-a.css','vendor/library-b.css'], 'vendor.css'); // Concatenate and autoprefix CSS files
});