const mix = require('laravel-mix'); require('laravel-mix-polyfill'); // mix Backend mix.js('resources/js/app.js', 'public/js') .sass('resources/sass/app.scss', 'public/css') .vue() .sourceMaps() .polyfill({ enabled: true, useBuiltIns: "usage", targets: { "firefox": "50", "ie": 11 } });