Gulp. Set

gulpfile.js

var gulp         = require('gulp'),
    concat       = require('gulp-concat'),
    ngAnnotate   = require('gulp-ng-annotate'),
    uglify       = require('gulp-uglify'),
    autoprefixer = require('gulp-autoprefixer'),
    sass         = require('gulp-sass'),
    minifyCss    = require('gulp-minify-css'),
    del          = require('del'),
    imagemin     = require('gulp-imagemin'),
    sourcemaps   = require('gulp-sourcemaps'),
    babel        = require('gulp-babel'),
    browserSync  = require('browser-sync').create();


gulp.task('default', ['clean'], function() {
    gulp.start('sass', 'images', 'scripts');
});

gulp.task('clean', function () {
    del(['css', 'js', 'images']);
});

gulp.task('sass', function () {
    return gulp.src('web-src/scss/*.scss')
        .pipe(sourcemaps.init(''))
        .pipe(sass().on('error', sass.logError))
        .pipe(autoprefixer())
        .pipe(minifyCss({
            keepSpecialComments: 0
        }))
        .pipe(sourcemaps.write(''))
        .pipe(gulp.dest('css'))
        .pipe(browserSync.stream());
});

gulp.task('images', function () {
    return gulp.src(['web-src/images/*'])
        .pipe(imagemin({
            progressive: true,
            interlaced: true
        }))
        .pipe(gulp.dest('images/'))
        .pipe(browserSync.stream());
});

gulp.task('scripts', function() {
    return gulp.src(['modules/**/*.js', 'modules/**/js/*.js'])
        .pipe(sourcemaps.init())
        .pipe(babel())
        .pipe(ngAnnotate())
        .pipe(concat('main.js'))
        .pipe(uglify())
        .pipe(sourcemaps.write("."))
        .pipe(gulp.dest('js/'))
        .pipe(browserSync.stream());
});

gulp.task('serve', function () {

    browserSync.init({
        scriptPath: function (path, port, options) {
            return "/browser-sync/browser-sync-client.js";
        },
        socket: {
            domain: 'localhost:3000'
        },
        server: {
            baseDir: "./"
        },
        notify: false
    });

    gulp.watch('web-src/scss/*.scss', ['sass']);
    gulp.watch('web-src/images/*', ['images']);
    gulp.watch(['modules/**/*.js', 'modules/**/js/*.js'], ['scripts']);
    gulp.watch(['index.html', 'modules/**/**/*.html']).on('change', browserSync.reload);
});

package.json

{
  "name": "<name>",
  "version": "1.0.0",
  "description": "<description>",
  "main": "gulpfile.js",
  "dependencies": {
    "bower": "^1.3.12",
    "browser-sync": "^2.9.11",
    "del": "^2.0.2",
    "gulp": "^3.9.0",
    "gulp-autoprefixer": "^3.0.2",
    "gulp-babel": "^5.2.1",
    "gulp-concat": "^2.6.0",
    "gulp-imagemin": "^2.3.0",
    "gulp-minify-css": "^1.2.1",
    "gulp-ng-annotate": "^1.1.0",
    "gulp-sass": "^2.0.4",
    "gulp-sourcemaps": "^1.5.2",
    "gulp-uglify": "^1.4.1"
  },
  "devDependencies": {},
  "scripts": {
    "prestart": "npm update",
    "postinstall": "bower update"
  },
  "repository": {
    "type": "git",
    "url": "<something>.git"
  },
  "author": "<someone>",
  "license": "UNLICENSED"
}