view-source:https://twitter.com

A very brief overview of twitter.com's frontend architecture

Transcript

1. view-source:https://twitter.com A very brief overview of twitter.com’s frontend architecture
3. @giuseppegurgone 2009
4. 2010 @giuseppegurgone
5. 2010 @giuseppegurgone
6. @giuseppegurgone 2010 #!NewTwitter Fully Client Side Application jQuery, Mustache, LABjs, Modernizr Home grown MVC “Necessary complexity” – Dan Webb
7. 2012 @giuseppegurgone
8. @giuseppegurgone 2012 Expandable tweets
9. @giuseppegurgone 2012 Inline Previews – Previeweet
10. Journey into twitter.com’s source code @giuseppegurgone Previeweet https://github.com/giuseppeg/Previeweet Reverse engineering Minified code Learnt a ton !0 ~ ,
11. @giuseppegurgone Previeweet last iteration pre–cards
12. @giuseppegurgone @danwrong yey! The future is coming and it looks just like the past, but more good underneath. — Tom Lea (@cwninja) May 23, 2012 Server side rendering – 4x faster Progressive Enhancement Flight.js – Component based UI framework CommonJS + AMD via Loadrunner hashbang #! Hello PushState
13. @giuseppegurgone Architecture Flight.js – Twitter’s JS Framework Code splitting (bundles) App initialization (bootstrapping) Routing
14. function inbox() { this.attributes({ myProp: 'hi' }) this.doSomething = function () { this.trigger(document, 'uiDoingSomething') /* ... */ } // after initializing the component this.after('initialize', function () { this.on('click', this.doSomething) }) } var Inbox = flight.component(inbox) /* Attach the component to a DOM node */ Inbox.attachTo('#inbox', { myProp: 'hello' }) Flight.js A component-based, event-driven JavaScript framework @giuseppegurgone
15. Flight.js Components @giuseppegurgone Get a reference to a node this.$node Organised in UI and Data components Decoupled – trigger and subscribe to DOM events Isolated and easy to test and reason about
16. @giuseppegurgone Flight.js Components
17. Code Splitting Bundles @giuseppegurgone
18. var UiTimeline = require('components/ui/Timeline') var DataTimeline = require('components/data/Timeline') /* ... */ function init(initData) { /* Attach components to DOM nodes */ UiTimeline.attachTo('#timeline', initData.timeline) DataTimeline.attachTo('#timeline', initData.timeline) /* ... */ } module.exports = init Code Splitting Bundles @giuseppegurgone
19. <input type="hidden" id="init-data" class="json-data" value="{ App data in JSON }"> <input type="hidden" class="swift-boot-module" value="app/pages/permalink"> <input type="hidden" id="swift-module-path" value="https://abs.twimg.com/c/swift/en"> <script src="https://abs.twimg.com/k/en/init.en.38255812c7627517cc63.js" async> </script> App Initialization Bootstrapping @giuseppegurgone
20. /* Grab initial data */ var initData = {} try { initData = $.parseJSON( $('#init-data').val() ) } catch (e) {} /* Grab modules base path */ var basePath = using.path = $('#swift-module-path').val() /* Grab modules names */ var modules = $('.swift-boot-module').map(function (_, module) { return module.val() }).toArray() /* require modules and call their exported function (init) with initData */ using(modules, function () { [].slice.call(arguments).forEach(function (init) { init(initData) }) }) App Initialization Bootstrapping @giuseppegurgone
21. App Initialization until a few days ago... @giuseppegurgone
22. PushState via HTML5 History API Progressive Enhacement UI component to catch clicks on .js-nav links Data component to fetch data and update the URL / History UI component to update the UI Routing @giuseppegurgone
23. Routing @giuseppegurgone Todd Kloots https://youtu.be/hrZl_EQUbRQ
24. @giuseppegurgone #ThankYou