gulpfile.js

const elixir = require('laravel-elixir');

require('laravel-elixir-vue-2');

/*
 |--------------------------------------------------------------------------
 | Elixir Asset Management
 |--------------------------------------------------------------------------
 |
 | Elixir provides a clean, fluent API for defining some basic Gulp tasks
 | for your Laravel application. By default, we are compiling the Sass
 | file for your application as well as publishing vendor resources.
 |
 */

elixir((mix) => {
    mix
        .sass('app.scss')
        .webpack('app.js', null, null, {cache: false})
        // .webpack('app-todos.js')
        .copy('resources/assets/js/vendor/jquery-3.1.1.min.js', 'public/js/jquery-3.1.1.min.js')
        .copy('resources/assets/js/vendor/YTPlayer.min.js', 'public/js/YTPlayer.min.js');
});