Node.js Tools Ecosystem

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Node.js Tools Ecosystem
Michael Byrne, MultiValue Evangelist

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Abstract
 Node.js is a powerful JavaScript platform that helps you build server
applications. It has become a popular option for building network
applications and web servers. Explore how Node.js interacts with the
multitude of add-on open source modules to build a modern web
application in no time.
©2015 Rocket Software, Inc. All Rights Reserved.

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Agenda
 Intro to Node.js
 Code editors
 Node Package Manager (npm)
 Web server: Express, koa, hapi
 Template engines: Jade / EJS
 Client-side packaging: Bower / Browserify
 Task runners: Grunt / Gulp
 Scaffolding tools: Yo (Yeoman)
 Testing: Jasmine, Mocha, Karma

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What is Node.js?
Platform built on Google V8 JavaScript engine
• Open-source under BSD license
• Extremely fast
• Focused on web; proficient with HTTP, DNS, TCP, etc.
Easily build fast, scalable network applications
Asynchronous, event-driven, non-blocking I/O model
Large developer community

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Why Are JavaScript and Node.js Relevant?
Incredibly fast – non-blocking programming
Dynamic objects and prototypal inheritance
JavaScript is the internet
Consistent language across stack
Tooling and community

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What Enterprises Say
“Node.js powers our web applications and has allowed our teams
to move much faster in bringing their designs to life”
Jeff Harrell – Director of Engineering at PayPal
“Node’s evented I/O model freed us from worrying about locking and
concurrency issues that are common with multithreaded async I/O”
Subbu Allarmarju – Principal Member, Technical Staff at ebay
“On the server side, our entire mobile software stack is completely
built in Node. One reason wasscale. The second is Node showed us
huge performance gains.”
Kiran Prasad – Mobile Development Lead at LinkedIn
Source: http://apmblog.dynatrace.com/2015/04/09/node-js-is-hitting-the-big-time-in-enterprise-markets/

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Sample Node.js Architecture
Web API HTML
MV REST Server
MV DB Server
Web Server

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Node.js Simple Web Server
server.js
> Node server.js
Server running at http://127.0.0.1:3000/

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Code Editors for Web Development
Brackets
(Free)
Sublime Text
($70 for indiv)
WebStorm
($49 for indiv)

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Node Package Manager (npm)
Package manager for JavaScript written in JavaScript
Default package manager for Node.js. Auto installed
with Node environment as of v0.6.3. (current v0.12.7)
npm modules are retrieved over the internet from the
public package registry maintained on
http://npmjs.org

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npm Overview
npm
Node.js Project
Installed Packages

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Npm Usage
> npm install <package-name> --save --save-exact
{
"dependencies": {
<package-name>: "3.10.1"
}
}
package.json

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Nodemon
Monitors for changes in files and restarts server
> npm install –g nodemon
> nodemon server.js
C:demos>node server.js
^C
^C

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Node.js Simple Web Server with Nodemon
server.js
> Nodemon server.js

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Express
Minimal and flexible Node.js web application framework
Good for web and mobile applications
Easy to build robust APIs
> npm install express –-save –-save-exact

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Web Server with Express
var express = require('express');
var app = express();
app.get('/', function (req, res) {
res.send('Hello World!');
});
var server = app.listen(3000, function () {
var host = server.address().address;
var port = server.address().port;
console.log('Example app listening at http://%s:%s', host, port);
});

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Express-generator
C:demosmvu2015node>express -h
Usage: express [options] [dir]
Options:
-h, --help output usage information
-V, --version output the version number
-e, --ejs add ejs engine support (defaults to jade)
--hbs add handlebars engine support
-H, --hogan add hogan.js engine support
-c, --css <engine> add stylesheet <engine> support (less|stylus|compass) (d
efaults to plain css)
--git add .gitignore
-f, --force force on non-empty directory

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Template Engines
EJS with Jade templating engine

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Bower
# registered package
$ bower install jquery
# GitHub shorthand
$ bower install desandro/masonry
# Git endpoint
$ bower install git://github.com/user/package.git
# URL
$ bower install http://example.com/script.js
Front-end package manager

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Express Demo with MV REST API

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Sample Node.js Architecture
MV REST Server
MV DB Server
Web Server

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Testing Tools
Karma
• Layer on top of testing libraries using common configuration
• Agnostic to testing framework (Jasmine, Mocha, etc.)
• Can test different browser behavior
Jasmine – BDD testing framework
• Frisby – REST API testing framework on Jasmine
Mocha – TDD testing framework

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Jasmine Testing Example (no Karma)
Defined Test (api_spec.js)Route added to index.js

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Yeoman
Generator ecosystem
Collection of 3 tools
• Scaffolding: Yo
• Build system: Grunt / Gulp
 Minification of JS and CSS
 Build tasks (copy, clean, rename, move, etc.)
 Testing
• Package manager: Bower / npm
 jQuery, AngularJS, Custom Scripts, etc.

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Yo Generators
> yo generator-angular
> Grunt serve
Running "serve" task
Running "clean:server" (clean) task
>> 1 path cleaned.
Running "wiredep:app" (wiredep) task
Running "wiredep:test" (wiredep) task
Running "concurrent:server" (concurrent) task
Running "copy:styles" (copy) task
Copied 1 file
Done, without errors.
Live Reload

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Popular Generators

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Additional Resources
 https://en.wikipedia.org/wiki/Npm_(software)
 https://www.airpair.com/node.js/posts/nodejs-framework-comparison-express-
koa-hapi

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Disclaimer
THE INFORMATION CONTAINED IN THIS PRESENTATION IS PROVIDED FOR INFORMATIONAL PURPOSES ONLY.
WHILE EFFORTS WERE MADE TO VERIFY THE COMPLETENESS AND ACCURACY OF THE INFORMATION CONTAINED
IN THIS PRESENTATION, IT IS PROVIDED “AS IS”, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED.
IN ADDITION, THIS INFORMATION IS BASED ON ROCKET SOFTWARE’S CURRENT PRODUCT PLANS AND STRATEGY,
WHICH ARE SUBJECT TO CHANGE BY ROCKET SOFTWAREWITHOUT NOTICE.
ROCKET SOFTWARE SHALL NOT BE RESPONSIBLE FOR ANY DAMAGES ARISING OUT OF THE USE OF, OR
OTHERWISE RELATED TO, THIS PRESENTATION OR ANY OTHER DOCUMENTATION.
NOTHING CONTAINED IN THIS PRESENTATION IS INTENDED TO, OR SHALL HAVE THE EFFECT OF:
• CREATING ANY WARRANTY OR REPRESENTATION FROM ROCKET SOFTWARE(OR ITS AFFILIATES OR ITS OR
THEIR SUPPLIERS AND/OR LICENSORS); OR
• ALTERING THE TERMS AND CONDITIONS OF THE APPLICABLE LICENSE AGREEMENT GOVERNING THE USE OF
ROCKET SOFTWARE.

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Trademarks and Acknowledgements
The trademarks and service marks identified in the following list are the exclusive properties of Rocket Software,
Inc. and its subsidiaries (collectively, “Rocket Software”). These marks are registered with the U.S. Patent and
Trademark Office, and may be registered or pending registration in other countries. Not all trademarks owned by
Rocket Software are listed. The absence of a mark from this page neither constitutes a waiver of any intellectual
property rights that Rocket Software has established in its marks nor means that Rocket Software is not owner of
any such marks.
Aldon, CorVu, Dynamic Connect, D3, FlashConnect, Pick, mvBase, MvEnterprise, NetCure,
Rocket, SystemBuilder, U2, U2 Web Development Environment, UniData, UniVerse, and
wIntegrate
Other company, product, and service names mentioned herein may be trademarks or service marks of
others.

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