my web-app starter

gulpfile.js

var browserSync = 	require('browser-sync').create();
var gulp = 			require('gulp');
var del = 			require('del');

var	concat = 		require('gulp-concat'),
	filesize = 		require('gulp-filesize'),
	gutil = 		require('gulp-util'),
	order = 		require('gulp-order');
    rename	= 		require('gulp-rename'),
    sass = 			require('gulp-sass'),
	sourcemaps = 	require('gulp-sourcemaps'),
	uglify = 		require('gulp-uglify');


var	paths = {
		mainScript:		'sources/js/app.js',
		scripts: 		'sources/js/**/*.js',
		stylesheets: 	'sources/scss/**/*.scss'
	};




gulp.task('default', ['build', 'start']);

gulp.task('build', ['scripts', 'stylesheets']);
gulp.task('start', ['serve', 'watch']);





gulp.task('serve', function() {
	browserSync.init({ server: "./public" });
});


// Rerun the task when a file changes
gulp.task('watch', function() {
	gulp.watch(paths.scripts, ['scripts']);
	gulp.watch(paths.stylesheets, ['stylesheets']);
	gulp.watch([
		"public/*.html",
		"public/**/*.js",
		"public/**/*.css"
	]).on('change', browserSync.reload);
});





gulp.task('scripts', ['clean:scripts'], function() {
  	gulp.src(paths.scripts)
		.pipe(order([ paths.mainScript, paths.scripts]))

		// concat
		.pipe(sourcemaps.init())
		.pipe(concat('app.js'))
		.pipe(filesize())
		.pipe(gulp.dest('public/scripts'))

		// minify
	    .pipe(uglify().on('error', gutil.log))
	    .pipe(rename({extname: '.min.js'}))
		.pipe(sourcemaps.write('./'))
	    .pipe(filesize())
		.pipe(gulp.dest('public/scripts'));

});


gulp.task('stylesheets', ['clean:stylesheets'], function () {
	gulp.src(paths.stylesheets)
		.pipe(sourcemaps.init())
		.pipe(sass({outputStyle: 'compressed'}).on('error', sass.logError))
		.pipe(sourcemaps.write('./'))
	  .pipe(filesize())
		.pipe(gulp.dest('public/stylesheets'));
});





gulp.task('clean', ['clean:scripts', 'clean:stylesheets']);

gulp.task('clean:scripts', function() {
	del(['public/scripts']);
});

gulp.task('clean:stylesheets', function() {
	del(['public/stylesheets']);
});

package.json

{
  "name": "application-name",
  "version": "1.0.0",
  "description": "Application Description",
  "main": "public/index.html",
  "author": "Author Name",
  "license": "ISC",
  "dependencies": {
    "browser-sync": "^2.8.1",
    "del": "^1.2.0",
    "gulp": "^3.9.0",
    "gulp-concat": "^2.6.0",
    "gulp-filesize": "0.0.6",
    "gulp-order": "^1.1.1",
    "gulp-rename": "^1.2.2",
    "gulp-sass": "^2.0.4",
    "gulp-sourcemaps": "^1.5.2",
    "gulp-uglify": "^1.2.0",
    "gulp-util": "^3.0.6"
  }
}