Gulp files to process all sass & js files then compress them. used within Laravel app with admin-site separation using Zurb Foundation

gulpfile.js

var gulp = require('gulp');
var gutil = require('gulp-util');
var autoprefixer = require('gulp-autoprefixer');
var minifycss = require('gulp-minify-css');
var uglify = require('gulp-uglify');
var rename = require('gulp-rename');
var notify = require('gulp-notify');
var sass = require('gulp-ruby-sass');
var phpunit = require('gulp-phpunit');
var concat = require('gulp-concat');
// directories
var appDir = "app"
var testsDir = appDir + '/tests';
var sassDir = 'app/scss';
var sassCacheDir = 'app/storage/.sass-cache';
var cssDir = 'public/assets/css';
var cssDirAdmin = 'public/assets/admin/css';
var jsDir = 'public/assets/js';
var jsDirAdmin = 'public/assets/admin/js';
var foundationJsDir = 'vendor/zurb/foundation/js/foundation';
var vendorJsDir = 'public/assets/js/vendor';
var vendorJsDirAdmin = 'public/assets/admin/js/vendor';


// compile the site sass
gulp.task('site-css-compile', function() {
    return gulp.src(sassDir + '/styles.scss')
        .pipe(sass({cacheLocation: sassCacheDir, lineNumbers: true}).on('error', gutil.log))
        .pipe(gulp.dest(cssDir));
});

// compile the admin sass
gulp.task('admin-css-compile', function() {
    return gulp.src(sassDir + '/admin/styles.scss')
        .pipe(sass({cacheLocation: sassCacheDir, lineNumbers: true}).on('error', gutil.log))
        .pipe(gulp.dest(cssDirAdmin));
});

// minifys the site scc
gulp.task('site-css-min', ['site-css-compile'], function() {
    return gulp.src(cssDir + '/styles.css')
        .pipe(minifycss())
        .pipe(autoprefixer('last 4 version'))
        .pipe(rename('styles.min.css'))
        .pipe(gulp.dest(cssDir))
        .pipe(notify({ message: "Site CSS Processed"}));
});

// minifys the admin css
gulp.task('admin-css-min', ['admin-css-compile'], function() {
    return gulp.src('public/assets/admin/css/styles.css')
        .pipe(minifycss())
        .pipe(autoprefixer('last 4 version'))
        .pipe(rename('styles.min.css'))
        .pipe(gulp.dest('public/assets/admin/css'))
        .pipe(notify({ message: "Admin CSS Processed"}));
});

// compile the owl carousel sass
gulp.task('owl-css-compile', function () {
    return gulp.src(sassDir + '/owlcarousel/styles.scss')
        .pipe(sass({cacheLocation: sassCacheDir, lineNumbers: true}).on('error', gutil.log))
        .pipe(gulp.dest(cssDir + '/owlcarousel'));
});

// minifys the owl carousel css
gulp.task('owl-css-min', ['owl-css-compile'], function () {
    return gulp.src(cssDir + '/owlcarousel/styles.css')
        .pipe(minifycss())
        .pipe(autoprefixer('last 4 version'))
        .pipe(rename('styles.min.css'))
        .pipe(gulp.dest(cssDir + '/owlcarousel'))
        .pipe(notify({message: "Owl Carousel CSS Processed"}));
});

// collate the css tasks
gulp.task('all-css', ['site-css-compile', 'admin-css-compile', 'owl-css-compile', 'site-css-min', 'admin-css-min', 'owl-css-min'], function() {
    
});

// phpunit tests
gulp.task('phpunit', function() {
    gulp.src(testsDir + '/**/*.php').pipe(phpunit());
});

// watcher task for css
gulp.task('cssWatcher', function() {
    gulp.watch(sassDir + '/**/*.scss', ['all-css']);
});
// defaukt task used to trigger css & watcher functioinality
gulp.task('default', ['all-css', 'cssWatcher']);

// merge all foundation js files
gulp.task('merge-foundation-js', function () {
    return gulp.src([foundationJsDir + '/foundation.js', foundationJsDir + '/*.js'])
        .pipe(concat('all-foundation.js'))
        .pipe(gulp.dest(jsDir))
        .pipe(notify({ message: "Foundation js merged" }))
        .on('error', gutil.log);
});

// merge all additional vendor js files
gulp.task('merge-vendor-js', function () {
    return gulp.src(vendorJsDir + '/*.js')
        .pipe(concat('all-vendor.js'))
        .pipe(gulp.dest(jsDir))
        .pipe(notify({message: "Vendor js merged"}))
        .on('error', gutil.log);
});

// merge all vendor js files used for admin
gulp.task('merge-vendor-js-admin', function () {
    return gulp.src(vendorJsDirAdmin + '/*.js')
        .pipe(concat('all-vendor-admin.js'))
        .pipe(gulp.dest(jsDirAdmin))
        .pipe(notify({message: "Admin Vendor js merged"}))
        .on('error', gutil.log);
});

// minifies merged foundation js file
gulp.task('minify-foundation-js', ['merge-foundation-js'], function () {
    return gulp.src(jsDir + '/all-foundation.js')
        .pipe(uglify({mangle: false}))
        .pipe(rename('all-foundation.min.js'))
        .pipe(gulp.dest(jsDir))
        .pipe(notify({message: "Foundation js minified"}))
        .on('error', gutil.log);
});

// minifies sites merged vendor js file
gulp.task('minify-vendor-js', ['merge-vendor-js'], function () {
    return gulp.src(jsDir + '/all-vendor.js')
        .pipe(uglify({mangle: false}))
        .pipe(rename('all-vendor.min.js'))
        .pipe(gulp.dest(jsDir))
        .pipe(notify({message: "Vendor js minified"}))
        .on('error', gutil.log);
});

// minifies merged admin vendor js file
gulp.task('minify-vendor-js-admin', ['merge-vendor-js-admin'], function () {
    return gulp.src(jsDirAdmin + '/all-vendor-admin.js')
        .pipe(uglify({mangle: false}))
        .pipe(rename('all-vendor-admin.min.js'))
        .pipe(gulp.dest(jsDirAdmin))
        .pipe(notify({message: "Admin Vendor js minified"}))
        .on('error', gutil.log);
});

// minifies sites js file
gulp.task('minify-js-site', function () {
    return gulp.src(jsDir + '/site.js')
        .pipe(uglify({mangle: false}))
        .pipe(rename('site.min.js'))
        .pipe(gulp.dest(jsDir))
        .pipe(notify({message: "Site js minified"}))
        .on('error', gutil.log);
});

// minifies admins js file
gulp.task('minify-js-admin', function () {
    return gulp.src(jsDirAdmin + '/admin.js')
        .pipe(uglify({mangle: false}))
        .pipe(rename('admin.min.js'))
        .pipe(gulp.dest(jsDirAdmin))
        .pipe(notify({message: "Admin js minified"}))
        .on('error', gutil.log);
});

// create single js file for use on site
gulp.task('create-js-site', ['minify-foundation-js', 'minify-vendor-js', 'minify-js-site'], function() {
    return gulp.src([jsDir + '/jquery-2*.js', jsDir + '/all-foundation.min.js', jsDir + '/all-vendor.min.js', jsDir + '/site.min.js'])
        .pipe(concat('full-site.min.js'))
        .pipe(gulp.dest(jsDir))
        .pipe(notify({message: "Full site js file created"}))
        .on('error', gutil.log);
});

// create single js file for admin use
gulp.task('create-js-admin', ['minify-foundation-js', 'minify-vendor-js', 'minify-vendor-js-admin', 'minify-js-admin'], function () {
    return gulp.src([jsDir + '/jquery-2*.js', jsDir + '/jquery-ui*.js', jsDir + '/all-foundation.min.js', jsDir + '/all-vendor.min.js', jsDirAdmin + '/all-vendor-admin.min.js', jsDirAdmin + '/admin.min.js'])
        .pipe(concat('full-admin.min.js'))
        .pipe(gulp.dest(jsDirAdmin))
        .pipe(notify({message: "Full Admin js file created"}))
        .on('error', gutil.log);
});

package.json

{
  "devDependencies": {
    "gulp": "^3.8.5",
    "gulp-autoprefixer": "0.0.7",
    "gulp-concat": "^2.2.0",
    "gulp-minify-css": "^0.3.6",
    "gulp-notify": "^1.4.0",
    "gulp-phpunit": "^0.5.3",
    "gulp-rename": "^1.2.0",
    "gulp-ruby-sass": "^0.5.0",
    "gulp-uglify": "^0.3.1",
    "gulp-util": "^2.2.19"
  }
}