The document provides a review of the DOTJS 2015 conference in Paris. It summarizes that the conference is part of an annual series focused on JavaScript and related technologies. It attracted almost 1,000 participants and featured both short lightning talks and longer keynote speeches on topics like modern asynchronous JavaScript, peer-to-peer file sharing with Hyperdrive, memory management, HTTP/2, ES6 features, reactive programming with RxJS, WebRTC, template compilers, teaching kids to code, mobile optimization, and the future of WebAssembly.

1. CONFERENCE
DOTJS 2015 PARIS
REVIEW
_by Oleksii Prohonnyi

3. ABOUT THE
CONFERENCE

5.  It is taking place each year from 2012.
 Part of dotConferences series: dotJS, dotSwift,
dotGo, dotScale, dotCSS, dotSecurity.
 The conference is organized by @sylvinus and
his dotConferences team. dotJS is co-curated
by @tbassetto.
 Almost 1 000 participants this year.
 The conference takes place in the Théâtre de
Paris.

10. UNUSUAL
ASPECTS

11.  All sponsors are product companies which
propose products or services for developers.
 Ambassador program – referral invitation
program.
 “No laptops” rule during speeches.
 Schedule:
 3 sessions (~ 1 hour)
 5 light talks (~ 5 minutes).
 Questions from host only.

15. LIGHT
TALKS

16. 1. Johannes Fiala “Swagger” swagger.io
2. Vincent Voyer “ES 6 modules” Read about
3. Etienne Margraff “Vorlon.js debugger” Slides
4. Maxim Salnikov “AngularJS 2” Read about
5. Nicolas Grenie “JAWS” Read about

17. SPEECHES
HIGHLIGHTS

18. CHRISTOPHE PORTENEUVE
Modern Async.js

20.  Callback hell reminder
 How to improve:
 Async.js
 Promises
 Generators
 Promises + Generators
 Async/await
 Reactive programming (RxJS)
 How to debug Async
 Slides: http://tdd.github.io/dotjs-async

21. MATHIAS BUUS
Hyperdrive: p2p hash sharing tool

23.  File sharing principles:
 Smart diffing
 Deduplication
 Simplicity / modularity
 npm install hyperdrive
 Demo
 Slides:
https://github.com/mafintosh/slides/blob/gh-
pages/dotjs-2015/README.md

24. SAMUEL SACCONE
Dealing with garbage

26.  Performance issues in TodoMVC
 How Browser’s memory works
 Memory leaks in frameworks
 Memory profiling tips and practices
 Identify clean action sets
 Measure what is happening
 Analyse Results!
 Slides:
https://docs.google.com/presentation/d/1uom69F6N
GURHhrox1Ma50NW1nOKqdxRr0dKDNENwi6Y

27. REBECCA MURPHEY
HTTP/2 is here, now let's make it easy

29.  How will servers support HTTP/2?
 How will we visualize HTTP/2 connections?
 How will my app work with HTTP/2?
 Why does all of this matter?
 HTTP/2 right now solutions
 Slides: https://speakerdeck.com/rmurphey/2-is-
here-now-lets-make-it-easy

30. NICOLAS BEVACQUA
ES6 Overview in 350 Bullet Points

32.  Assignment destructuring
 Arrow functions
 Template/Object literals
 Let and const
 Iterators
 Promises
 Modules
 Blog post: https://ponyfoo.com/articles/es6

33. ANDRE MEDEIROS
Reactive JavaScript

35.  “No state. Only declaration.” concept
 Observable pattern idea
 How Rx.JS implements Observable
 ReactiveX - An API for asynchronous
programming with observable streams.

36. ERIC SCHOFFSTALL
WebRTC

38.  New project idea
 WebRTC usage experience
 Native mobile application
 Compatibility and browsers support issues
 Hacks how to fix WebRTC on mobile:
 Crosswalk (Android)
 iOSRTC (iOS)
 Temasys (IE/Safari)
 New project announce: WebRTC.Works

39. FORBES LINDESAY
Jade & compilers

41.  Announce: Jade 2 > Pug
 Jade concepts explanation:
 How parts are working together along a
pipe
 Text transformation to a tree and back to
HTML
 Pug will support plugins!
 Jade: jade-lang.com
 Pug: github.com/pugjs

42. TIM CASWELL
Teaching Kids Programming using Web
Browsers and Real Robots

44.  “Let’s teach children to code” trend
 Web solution for coding
 Text compilation into byte code
 Demo

45. HENRIK JORETEG
JS in Your Pocket

47.  JS is everywhere these days
 “Mobile everything!”
 High performance mobile web is tricky!
 “65” concept
 What should be done to minimize app size?
 What should not be used to minimize app size?
 Proof of concept app presentation
 Slides: https://slides.joreteg.com/dotjs/

48. BRENDAN EICH
WebAssembly

50.  Web is not just Google Chrome, Firefox or IE.
 Flipkart example of going web instead of native
 “Always bet on JavaScript!”
 Gaming demo: how good the Web could be.
 Future of Web is WebAssembly

51. REFERENCES

52.  dotJS.io
 dotConferences.eu
 The dot Post
 ALibrada's dotJS 2015 notes
 DotJS 2015 photos
 #dotjs

53. THANK YOU
FOR
ATTENTION

54. Oleksii Prohonnyi
facebook.com/oprohonnyi
linkedin.com/in/oprohonnyi