gulpfile.js

var gulp = require('gulp');
var jshint = require('gulp-jshint');
var jscs = require('gulp-jscs');
var nodemon = require('gulp-nodemon');

var jsFiles = ['*.js', 'src/**/*.js'];

gulp.task('style', function(){
	return gulp.src(jsFiles)
		.pipe(jshint())
		.pipe(jshint.reporter('jshint-stylish', {
			verbose: true
		}))
		.pipe(jscs());
});

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

    var wiredep = require('wiredep').stream;

    var Promise = require('any-promise');

    var inject=require('gulp-inject');

    var injectSrc=gulp.src(['./public/css/*.css',
                            './public/js/*.js'],{read:false});

    var injectOptions={
        ignorePath:'/public'
    };

    var options={

        bowerJson:require('./bower.json'),

        directory:'./public/lib',

        ignorePath:'../../public'

    };

    return gulp.src('./src/views/*.ejs')

    .pipe(wiredep(options))

    .pipe(inject(injectSrc,injectOptions))  //wiredep and gulp-inject are used for inject  all bower packages,html and js files into index.html

    .pipe(gulp.dest('./src/views'));
});

gulp.task('serve', ['style','inject'], function(){
    var options = {
        script: 'app.js',
        delayTime: 1, 
        env: {
            'PORT': 3000
        },
        watch: jsFiles
    };

    return nodemon(options)
        .on('restart', function(ev){
            console.log('Restarting.....');
        });
});