Modern Web Application Development Workflow

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MODERN WEB APPLICATION DEVELOPMENT WORKFLOW

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FIRST, LET’S LOOK AT THE PAST

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HOW WEB APPLICATIONS USED TO BE DONE?

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THROW A BUNCH OF HTML FILES

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THROW A BUNCH OF HTML FILES ADD A COUPLE OF CSS FILES

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THROW A BUNCH OF HTML FILES ADD A COUPLE OF CSS FILES PUT SOME JAVASCRIPT IN ALL THIS

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THROW A BUNCH OF HTML FILES ADD A COUPLE OF CSS FILES PUT SOME JAVASCRIPT IN ALL THIS AND CALL IT A DAY...

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COME BACK 6 MONTHS LATER AND TRY TO REMEMBER HOW TO MAINTAIN YOUR CODE

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MOVING FORWARD

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A NODE.JS WORLD

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Node.js ≠ Server-side JavaScript

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Node.js stand alone JavaScript runtime

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Node.js stand alone JavaScript applications

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Node.js stand alone JavaScript applications created by JavaScript developers

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Node.js stand alone JavaScript applications created by JavaScript developers for JavaScript developers

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BRAND NEW WORLD

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JAVASCRIPT DEVELOPMENT TOOLS

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JAVASCRIPT DEVELOPMENT WORKFLOW

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A GOOD DEVELOPMENT WORKFLOW -HELPS YOU GET STARTED

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A GOOD DEVELOPMENT WORKFLOW -HELPS YOU GET STARTED -MAINTAINS YOUR DEPENDENCIES

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A GOOD DEVELOPMENT WORKFLOW -HELPS YOU GET STARTED -MAINTAINS YOUR DEPENDENCIES -ENFORCES BEST PRACTICES

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A GOOD DEVELOPMENT WORKFLOW -HELPS YOU GET STARTED -MAINTAINS YOUR DEPENDENCIES -ENFORCES BEST PRACTICES -PREPARES YOUR TOOLS

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A GOOD DEVELOPMENT WORKFLOW -HELPS YOU GET STARTED -MAINTAINS YOUR DEPENDENCIES -ENFORCES BEST PRACTICES -PREPARES YOUR TOOLS -FIGHTS REGRESSIONS

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A GOOD DEVELOPMENT WORKFLOW -HELPS YOU GET STARTED -MAINTAINS YOUR DEPENDENCIES -ENFORCES BEST PRACTICES -PREPARES YOUR TOOLS -FIGHTS REGRESSIONS -EASES THE RELEASE PROCESS

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HOW TO GET STARTED?

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YEOMAN Born in 2012 Various contributors (Employees from Google, Twitter, etc)

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YEOMAN scaffolding - structure - compilation - static analysis - dependencies management - development tools - unit testing

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YEOMAN download > npm install -g yo “-g” global install

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YEOMAN Various generators: ○ Angular ○ Ember ○ Backbone And all the other popular frameworks...

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YEOMAN bootstrapping You can also use Yeoman to generate an Yeoman generator project

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YEOMAN angular.js generator > npm install -g generator-angular

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YEOMAN create an Angular project > yo angular

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YEOMAN select some dependencies

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YEOMAN choose some options

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YEOMAN it creates the project

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YEOMAN it downloads the internet

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YEOMAN it uses some dark magic

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Enjoy the view, Yeoman takes care of everything…

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What does the result look like?

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STRUCTURE

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CONTENT

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DEPENDENCIES

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DEV TOOLS

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YEOMAN evolution over time > yo angular:controller myController create the code and its unit test

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IT’S MAGIC! and it will be your job to maintain it...

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HAPPY?

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BUT HOW DOES IT WORK?

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YEOMAN HAS FRIENDS

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BOWER

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GRUNT

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GULP

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AND OTHERS

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DEPENDENCIES MANAGEMENT

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BOWER

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BOWER Package manager for the web Born in 2012 Created by Twitter and other contributors over time

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BOWER Download > npm install -g bower

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BOWER Find a package > bower search jquery

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BOWER Find the versions available > bower info jquery

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BOWER Add a specific dependency > bower install jquery#1.10.2 --save install jquery and save this new dependency

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BOWER runtime dependencies in bower.json

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DEPENDENCIES

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LOCATION

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BOWER Add all your dependencies > bower install

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BOWER See your dependencies > bower list

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BOWER Package management always comes with its set of problems:

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BOWER Package management always comes with its set of problems: - how can I create a new package?

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BOWER Package management always comes with its set of problems: - how can I create a new package? - how can I host a bower repository?

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BOWER Package management always comes with its set of problems: - how can I create a new package? - how can I host a bower repository? - what kind of exotic tools will I have to use?

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BOWER Create a bower package > bower init

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BOWER Host a bower repository

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BOWER Host a bower repository > git init

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BOWER Host a bower repository > git init > git add .

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BOWER Host a bower repository > git init > git add . > git commit -m “Initial commit.”

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BOWER Host a bower repository > git init > git add . > git commit -m “Initial commit.” > git remote add origin …

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BOWER Host a bower repository > git init > git add . > git commit -m “Initial commit.” > git remote add origin … > git push origin master

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BOWER Host a bower repository SVN support has been added with bower 1.3 for those who care….

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BOWER Use bower with Git > bower install https://myrepository.git

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BOWER Host multiple versions > git tag -a 1.4 -m 'version 1.4' > bower install https://myrepository.git#1.4

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BOWER Host multiple versions Use semantic versioning to easily let your consumers handle API breakages

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BOWER Download > bower install jquery > bower install git://github.com/jquery/jquery.git

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BOWER Download > bower install jquery > bower install git://github.com/jquery/jquery.git How do this work?

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BOWER Registry https://github.com/bower/registry A simple web server listing Git repository URLs

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BOWER Register > bower register myrepository https://…git > bower install myrepository

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BUILD

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GRUNT GULP

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CONFIGURATION GULP CODE GRUNT

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EQUALLY POWERFUL

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GRUNT is a bit older so its ECOSYSTEM is more mature

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Grunt and Gulp development tools dependencies in package.json >npm install

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DEV TOOLS

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GRUNT

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GRUNT Configuration in Gruntfile.js

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GRUNT gruntfile.js structure 3 parts: -Task loading -Task configuration -Task registration

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GRUNT An example: Static code analysis with JSHINT

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GRUNT

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HOW DO YOU USE IT? >grunt >grunt jshint:all

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GULP

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GULP Configuration in Gulpfile.js

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GULP gulpfile.js structure 3 parts: - task loading - task configuration - task registration

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GULP

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GULP launch > gulp

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SOUNDS FAMILIAR?

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GULP differences with Grunt node.js streams (asynchronous by nature) nice and simple api concurrent execution with Orchestrator

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BUILD TASKS

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STATIC ANALYSIS grunt-contrib-jshint gulp-jshint Detect coding errors in your JavaScript files (Checkstyle-like reports)

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RESPONSIVE IMAGES grunt-responsive-images gulp-responsive-images Produce images at different sizes for responsive websites

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COMPRESS IMAGES grunt-contrib-imagemin gulp-imagemin Compress and optimize images

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COFFEESCRIPT grunt-contrib-coffee gulp-coffee Compile CoffeeScript source code to JavaScript

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SASS grunt-contrib-sass gulp-sass Compile SASS to CSS

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WHY SASS? - import - extends - function - mixins - variables - compilation errors

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MINIFICATION grunt-contrib-uglify gulp-uglify Reduce the size of JavaScript files

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CSS TRIMMING grunt-uncss gulp-uncss-task Remove unused CSS rules

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TESTING

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TESTING Frameworks: Jasmine, Mocha, QUnit Runner: Karma Code Coverage: Istanbul

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TESTING Hudson/Jenkins integration? karma-junit-reporter karma-coverage (Cobertura reports)

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CHROME DEVTOOLS

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WORKSPACE

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SNIPPETS

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AUDITS

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TIMELINE

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REMOTE DEBUGGING

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DEMONSTRATION Murphy’s Law: Anything that can go wrong — will go wrong

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BACKUP SLIDES (if everything failed, you still have some pictures)

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KARMA + GRUNT/GULP Test your application on various devices

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TO SUM UP

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YEOMAN + BOWER + GRUNT/GULP and their plugins… = AWESOME

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QUESTIONS?

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THANKS! Stéphane Bégaudeau Twitter: @sbegaudeau Google+: +stephane.begaudeau The research leading to these results has received funding from the European Union’s Seventh Framework Program (FP7/2007-2013) for CRYSTAL – Critical System Engineering Acceleration Joint Undertaking under grant agreement № 332830 and from specific national programs and/or funding authorities.