A personal gulp configuration file

gulpfile.js

// require modules
var fs = require('fs');
var path = require('path');
var merge = require('merge-stream');
var gulp = require('gulp');
var sass = require('gulp-sass');
var autoprefixer = require('gulp-autoprefixer');
var sourcemaps = require('gulp-sourcemaps');
var concat = require('gulp-concat'); // 合并js
var uglify = require("gulp-uglify");
var rename = require('gulp-rename');
var notify = require('gulp-notify');

// define variables
var sassPath = './resources/sass/**/*.scss',
	cssPath = './resources/css/',
	jsPath = 'resources/js/*.js',
	jsOut = 'assets/js/';

var sassOptions = {
	errLogToConsole: true,
	outputStyle: 'compressed'
};

function getFolders(dir) {
	return fs.readdirSync(dir)
			.filter(function(file){
				return fs.statSync(path.join(dir,file)).isDirectory();
			});
}

// Sass
gulp.task('sass', function(){
	gulp.src(sassPath)
		.pipe(sourcemaps.init())
		.pipe(sass(sassOptions).on('error', sass.logError))
		.pipe(autoprefixer('last 2 version'))
		.pipe(rename('style.css'))
		.pipe(sourcemaps.write('./'))
		.pipe(gulp.dest(cssPath));
});

// JS
gulp.task('js', function(){
	var folders = getFolders(jsPath);

	var tasks = folders.map(function(folder){
		return gulp.src(path.join(jsPath, folder, '/**/*.js'))
			.pipe(concat(folder + '.js'))
			.pipe(gulp.dest(jsOut))
			.pipe(uglify())
			.pipe(rename(folder + '.min.js'))
			.pipe(gulp.dest(jsOut));
	});

	var root = gulp.src(path.join(jsPath, '/*.js'))
		.pipe(concat('main.js'))
		.pipe(gulp.dest(jsOut))
		.pipe(uglify())
		.pipe(rename({suffix: '.min'}))
		.pipe(gulp.dest(jsOut));

	return merge(tasks,root);
	// gulp.src(jsPath)
	// 	.pipe(uglify())
	// 	.pipe(rename({suffix:'.min'}))
	// 	.pipe(gulp.dest(jsOut));
});

// Watch Task
gulp.task('default',function(){
	gulp.watch(sassPath, ['sass']);
});