My Gulpfile.js

gulpfile.js

/*!
 * gulp
 * $ npm install gulp-ruby-sass gulp-autoprefixer gulp-minify-css gulp-jshint gulp-concat gulp-uglify gulp-imagemin gulp-notify gulp-rename gulp-livereload gulp-cache del gulp-sourcemaps --save-dev
 */

// Load plugins
var gulp = require('gulp'),
    sass = require('gulp-ruby-sass'),
    autoprefixer = require('gulp-autoprefixer'),
    minifyCSS = require('gulp-minify-css'),
    jshint = require('gulp-jshint'),
    uglify = require('gulp-uglify'),
    imagemin = require('gulp-imagemin'),
    rename = require('gulp-rename'),
    concat = require('gulp-concat'),
    notify = require('gulp-notify'),
    cache = require('gulp-cache'),
    livereload = require('gulp-livereload'),
    sourcemaps = require('gulp-sourcemaps'),
    del = require('del');

var bower_path = "./vendor/bower_components";
var resource_path = "./resources/assets";
var paths = {
    'jquery'            : bower_path + "/jquery/dist",
    'bootstrap'         : bower_path + "/bootstrap-sass-official/assets",
    'fontawesome'       : bower_path + "/font-awesome",
    'datetimepicker'    : bower_path + "/soundasleep-bootstrap-datetimepicker-sass/src",
    'datetimepicker_js' : bower_path + "/eonasdan-bootstrap-datetimepicker/src",
    'moment'            : bower_path + "/moment"
};

// Copy dependencies style to resources
gulp.task('style-resources', function() {
    return gulp.src([
        paths.bootstrap + '/stylesheets/**/*.scss',
        paths.fontawesome + '/scss/**/*.scss',
        paths.datetimepicker + '/sass/**/*.scss'
    ])
        .pipe(gulp.dest(resource_path + '/sass'))
        ;
});

// Styles
gulp.task('styles', function() {
    return sass(resource_path + '/sass/app.scss',{
        loadPath: [
            paths.bootstrap + '/stylesheets',
            paths.fontawesome + '/scss',
            paths.datetimepicker + '/sass'
        ],
        style: 'expanded',
        compass: true,
        verbose: true,
        noCache: true,
        sourcemap: true
        })
        .on('error', function (err) {
            console.log('Error!', err.message);
        })
        .pipe(sourcemaps.init())
        .pipe(autoprefixer({
            browers: [
                'last 2 version',
                'safari 5',
                'ie 8',
                'ie 9',
                'opera 12.1',
                'ios 6',
                'android 4'
            ],
            cascade: false
        }))
        .pipe(sourcemaps.write('.', { includeContent: false, sourceRoot: '../../../scss/'}))
        .pipe(concat('app.css'))
        .pipe(gulp.dest('./public/assets/css'))
        .pipe(rename({ suffix: '.min' }))
        .pipe(minifyCSS({
            advanced: true,
            keepBreaks: false,
            keepSpecialComments : 0,
            benchmark: true
        }))
        .pipe(concat('app.min.css'))
        .pipe(gulp.dest('public/css'))
        .pipe(notify({ message: 'Styles task complete' }))
        .pipe(livereload());

});

// Scripts
gulp.task('scripts', function() {
    return gulp.src([
        resource_path + '/javascripts/app.js',
        paths.jquery + '/jquery.js',
        paths.bootstrap + '/javascripts/bootstrap.min.js',
        paths.moment + '/moment.js',
        paths.moment + '/locale/th.js',
        paths.datetimepicker_js + '/js/bootstrap-datetimepicker.js'

    ])
        .pipe(jshint('.jshintrc'))
        .pipe(jshint.reporter('default'))
        .pipe(concat('app.js'))
        .pipe(gulp.dest('public/assets/js'))
        .pipe(rename({ suffix: '.min' }))
        .pipe(uglify())
        .pipe(gulp.dest('public/js'))
        .pipe(notify({ message: 'Scripts task complete' }))
        .pipe(livereload());
});

// Images
gulp.task('images', function() {
    return gulp.src('resources/assets/images/**/*')
        .pipe(cache(imagemin({ optimizationLevel: 3, progressive: true, interlaced: true })))
        .pipe(gulp.dest('public/imgs'))
        .pipe(notify({ message: 'Images task complete' }))
        .pipe(livereload());
});

// Fonts
gulp.task('fonts', function() {
    return gulp.src([
        paths.fontawesome + '/fonts/**/*',
        paths.bootstrap + '/fonts/**/*'
    ])
        .pipe(gulp.dest('public/fonts'));
});

// Clean
gulp.task('clean', function(cb) {
    del(['public/assets/css', 'public/assets/js', 'public/assets/images'], cb);
});


// Watch
gulp.task('watch', function() {

    // Watch .scss files
    gulp.watch('resources/assets/sass/**/*.scss', ['styles']);

    // Watch .js files
    gulp.watch('resources/assets/javascripts/**/*.js', ['scripts']);

    // Watch image files
    gulp.watch('resources/assets/images/**/*', ['images']);

    // Create LiveReload server
    livereload.listen();

    // Watch any files in dist/, reload on changed
    gulp.watch(['resources/**', 'app/*.php', 'app/Http/routers.php', 'app/Http/Controllers/*.php', 'database/**' ]).on('change', livereload.changed);

});

// Default task
gulp.task('default', ['clean'], function() {
    gulp.start('styles', 'scripts', 'images', 'fonts');
});