Exemplo de config para Gulp

gulpfile.js

var autoPrefixBrowserList = ['last 2 ff versions', 'last 2 chrome versions', 'last 2 Edge versions',
		'last 2 safari versions', 'android >= 5', 'ie >= 10', 'safari >=8', 'ios >= 10'],
	gulp = require('gulp'),
	browserSync = require('browser-sync'),
	plumber = require('gulp-plumber'),
	del = require('del'),
	sass = require('gulp-sass'),
	autoprefixer = require('gulp-autoprefixer'),
	rjs = require('gulp-requirejs-optimize'),
	gulpSequence = require('gulp-sequence').use(gulp),
	shell = require('gulp-shell'),
	print = require('gulp-print');


/** O motivo de usar 'new function(){}' é que javascript não permite self-reference em objetos literais */
var paths = new function () {
	this.workingDir = 'globomais-web/src/main/webapp/WEB-INF',
		this.assetsDir = this.workingDir + '/assets',
		this.baseDir = {
			css: this.assetsDir + '/style/v2',
			sass: this.assetsDir + '/style/v2/scss',
			js: this.assetsDir + '/script/v2',
			media: this.assetsDir + '/media',
			mock: this.workingDir,
			dist: 'dist'
		},
		this.src = {
			images: [this.baseDir.media + '/*.jpg', this.baseDir.media + '/*.png'],
			sass: [
				this.baseDir.sass + '/home/home.scss',
				this.baseDir.sass + '/conta/conta.scss'
			],
			js: this.baseDir.js + '/*.js',
			configFile: this.baseDir.js + '/config/require.cfg.js',
			war: 'globomais-web/target/*.war'
		},
		this.dest = {
			images: this.baseDir.dist + '/media',
			css: this.baseDir.dist + '/css',
			js: this.baseDir.dist + '/js',
			jsConfig: this.baseDir.dist + '/js/config'
		},
		this.watch = {
			js: this.baseDir.js + '/**',
			css: this.baseDir.css + '/**',
			sass: this.baseDir.sass + '/**',
			media: this.baseDir.media + '/**',
			html: this.baseDir.mock + '/**'
		}
};


gulp.task('browserSync', ['compile-dev-css'], function () {
	browserSync({
		server: {
			baseDir: paths.baseDir.mock,
			index: 'mockup.html'
		},
		options: {
			reloadDelay: 250
		},
		files: [
			paths.watch.js,
			paths.watch.css,
			paths.watch.html
		],
		notify: false
	});
	gulp.watch(paths.watch.sass, ['compile-dev-css']);
});

gulp.task('delete-css', function () {
	return del([paths.dest.css + '/**', paths.baseDir.css + '/*.css']);
});

gulp.task('compile-dev-css', function () {
	console.log(paths.src.sass);
	return gulp
		.src(paths.src.sass)
		.pipe(plumber())
		.pipe(sass({
			errLogToConsole: true,
			includePaths: paths.baseDir.sass
		}))
		.pipe(autoprefixer({
			browsers: autoPrefixBrowserList
		}))
		.pipe(gulp.dest(paths.baseDir.css))
		.pipe(browserSync.reload({stream: true}));
});

gulp.task('compile-css', function () {
	return gulp
		.src(paths.src.sass)
		.pipe(plumber())
		.pipe(sass({
			errLogToConsole: true,
			includePaths: paths.baseDir.sass,
			outputStyle: 'compressed'
		}))
		.pipe(autoprefixer({
			browsers: autoPrefixBrowserList
		}))
		.pipe(gulp.dest(paths.dest.css));
});

gulp.task('compile-dev-css', function () {
	return gulp
		.src(paths.src.sass)
		.pipe(plumber())
		.pipe(sass({
			errLogToConsole: true,
			includePaths: paths.baseDir.sass
		}))
		.pipe(autoprefixer({
			browsers: autoPrefixBrowserList
		}))
		.pipe(gulp.dest(paths.baseDir.css));
});

gulp.task('delete-js', function () {
	return del(paths.dest.js);
});

gulp.task('compile-js', function () {
	console.log(paths.src.js);
	return gulp
		.src(paths.src.js)
		.pipe(plumber())
		.pipe(print())
		.pipe(rjs({
			baseUrl: paths.baseDir.js,
			optimize: 'uglify2',
			mainConfigFile: paths.src.configFile
		}))
		.pipe(gulp.dest(paths.dest.js));
});

gulp.task('copy-js-config', function () {
	return gulp
		.src(paths.src.configFile)
		.pipe(plumber())
		.pipe(gulp.dest(paths.dest.jsConfig));
});

gulp.task('clean-dist', function () {
	return del([paths.baseDir.dist + '/**', '!' + paths.baseDir.dist]);
});

gulp.task('compile-static-files', ['clean-dist'], gulpSequence('compile-css', 'compile-dev-css', 'compile-js', 'copy-js-config'));

gulp.task('compile-static-dev-files', ['clean-dist', 'compile-dev-css']);

gulp.task('maven-hom', shell.task('mvn clean package -Phom,integration'));

gulp.task('maven-prd', shell.task('mvn clean package -Pprod,integration'));

gulp.task('package-hom', ['compile-static-dev-files', 'maven-hom'], function () {
	return gulp
		.src(paths.src.war)
		.pipe(gulp.dest(paths.baseDir.dist));
});

gulp.task('package-prd', ['compile-static-files', 'maven-prd'], function () {
	return gulp
		.src(paths.src.war)
		.pipe(gulp.dest(paths.baseDir.dist));
});

gulp.task('default', ['browserSync']);






======================================================================================================================
Exemplo do package.json
{
	"name": "Produto",
	"version": "1.1.0",
	"description": "Descrição",
	"author": "Autor",
	"scripts": {
		"start": "gulp",
		"deploy": "gulp deploy"
	},
	"devDependencies": {
		"browser-sync": "^2.18.13",
		"del": "^3.0.0",
		"gulp": "^3.9.1",
		"gulp-autoprefixer": "^4.0.0",
		"gulp-plumber": "^1.1.0",
		"gulp-print": "^2.0.1",
		"gulp-requirejs-optimize": "^1.2.0",
		"gulp-sass": "^2.0.4",
		"gulp-sequence": "^0.4.1",
		"gulp-shell": "^0.6.3"
	},
	"dependencies": {}
}