Laravel Elixir guplfile

gulpfile.js

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

elixir(function (mix) {
    const bowerPath = './vendor/bower_components';

    // Stylesheets
    // -------------------------------------------------- //

    // Compiles to public/css/app.css
    mix.less('app.less', 'public/css', null, {
        paths: [
            bowerPath + '/bootstrap/less',
            bowerPath + '/csstools/less'
        ]
    });

    // Compiles to public/css/admin.css
    mix.less('admin.less', 'public/css', null, {
        paths: [
            bowerPath + '/bootstrap/less',
            bowerPath + '/csstools/less',
            bowerPath + '/eonasdan-bootstrap-datetimepicker/src/less'
        ]
    });

    /* Autoversion files */
    // mix.version('css/app.css');
    // mix.version('css/admin.css');

    // Scripts
    // -------------------------------------------------- //

    // Compiles to public/js/main.js
    mix.scripts([
        'main.js'
    ], 'public/js/main.js');

    // Compiles to public/js/admin.js
    mix.scripts([
        'ncs.js',
        'admin.js'
    ], 'public/js/admin.js');

    // Compiles to public/js/plugins.js
    mix.scripts([
        'ncs.js',
        // bowerPath + '/jquery-cycle2/build/jquery.cycle2.js',
    ], 'public/js/plugins.js');

    // Copied Assets
    // -------------------------------------------------- //
    mix.copy(bowerPath + '/fancyBox/source', 'public/plugins/fancybox');
    mix.copy(bowerPath + '/moment/min/moment.min.js', 'public/js/vendor/moment.min.js');
    mix.copy(bowerPath + '/eonasdan-bootstrap-datetimepicker/build/js/bootstrap-datetimepicker.min.js', 'public/js/vendor/bootstrap-datetimepicker.min.js');
    mix.copy(bowerPath + '/bootstrap/fonts', 'public/fonts');

    // BrowserSync
    // -------------------------------------------------- //
    mix.browserSync({
        proxy: 'mysite.dev'
    });
});