Upgrade to Pro — share decks privately, control downloads, hide ads and more …

Flow, du strong, static typing pour JavaScript

Avatar for Matthias Le Brun Matthias Le Brun
May 25, 2016
Programming
520
0

Flow, du strong, static typing pour JavaScript

Présentation de Flow et de ses capacités en matière de type-checking

Avatar for Matthias Le Brun

Matthias Le Brun

May 25, 2016

More Decks by Matthias Le Brun

See All by Matthias Le Brun
GraphQL, Pothos & SQLite: a perfect match
Avatar for Matthias Le Brun bloodyowl
0
110
(why the hell did I) build a GraphQL client for the browser
Avatar for Matthias Le Brun bloodyowl
0
150
Boxed: bringing algebraic types to TypeScript
Avatar for Matthias Le Brun bloodyowl
0
190
leveraging (algebraic data) types to make your UI rock @ jsheroes
Avatar for Matthias Le Brun bloodyowl
0
330
Leveraging (algebraic data) types to make your UI rock solid
Avatar for Matthias Le Brun bloodyowl
0
500
La drôle d'histoire de JavaScript
Avatar for Matthias Le Brun bloodyowl
0
400
Healthy Code Collaboration
Avatar for Matthias Le Brun bloodyowl
0
370
Simplify your UI management with (algebraic data) types
Avatar for Matthias Le Brun bloodyowl
0
850
Simplify your UI management with (algebraic data) types
Avatar for Matthias Le Brun bloodyowl
1
580

Other Decks in Programming

See All in Programming
その問い、本当に正しいですか？AI時代のエンジニアに必要な哲学と認知科学 / ai-philosophy-cognitive-science
Avatar for MinoDriven minodriven
14
6.4k
セキュリティの専門家じゃなくてもできる。「セキュリティ意識」をアップデートして サプライチェーン攻撃への耐性を高めよう。
Avatar for tk3fftk tk3fftk
5
970
SREは、MCPとSRE Agentをこう使え！
Avatar for kazumax55 kazumax55
0
120
AIキャラアプリkaiwaの低遅延音声通話基盤をどう作ったか - AWS Gravitonで支える低遅延・低コストAI Agent基盤
Avatar for 最上土川 mogamit
0
110
Hatena Engineer Seminar #37「言語モデルの活用に関する研究」
Avatar for SlashNephy slashnephy
0
220
Vite+ Unified Toolchain for the Web
Avatar for Naoki Haba naokihaba
0
360
Datadog LLM Observabilityで実現する 安全なLLM Usage 管理
Avatar for Brown 3150
0
120
Honoでのサプライチェーン侵害対策 〜 3つのライブラリに学ぶ
Avatar for Yusuke Wada yusukebe
7
1.5k
Skillsは効率化、Agentsは"自分の拡張"——Builder時代のエージェント編成（CC Night 2026）
Avatar for Hiroki Uemura wemra
1
170
LLM本来の能力を解き放つサンドボックス技術とAI民主化への適用
Avatar for Yuku Kotani yukukotani
3
4.6k
Spec Driven Development | AI Summit Lisbon
Avatar for Daniel Sogl danielsogl
PRO
0
210
LLMによるContent Moderationの本番運用の裏側と品質担保への挑戦
Avatar for suikabar suikabar
3
790

Featured

See All Featured
Breaking role norms: Why Content Design is so much more than writing copy - Taylor Woolridge
Avatar for UX Y'all uxyall
0
330
CoffeeScript is Beautiful & I Never Want to Write Plain JavaScript Again
Avatar for Sam Stephenson sstephenson
162
16k
My Coaching Mixtape
Avatar for mlcsv mlcsv
0
160
Ecommerce SEO: The Keys for Success Now & Beyond - #SERPConf2024
Avatar for Aleyda Solis aleyda
1
2k
We Analyzed 250 Million AI Search Results: Here's What I Found
Avatar for Josh Blyskal joshbly
1
1.4k
Exploring anti-patterns in Rails
Avatar for Elle Meredith aemeredith
3
430
Deep Space Network (abreviated)
Avatar for Tony Rice tonyrice
0
210
How to Align SEO within the Product Triangle To Get 
Buy-In & Support - #RIMC
Avatar for Aleyda Solis aleyda
2
1.6k
How to Grow Your eCommerce with AI & Automation
Avatar for Katarina Dahlin katarinadahlin
PRO
1
210
The Power of CSS Pseudo Elements
Avatar for Geoffrey Crofte geoffreycrofte
82
6.3k
Statistics for Hackers
Avatar for Jake VanderPlas jakevdp
799
230k
Into the Great Unknown - MozCon
Avatar for Noah Learner thekraken
41
2.6k

Transcript

  1. Flow du strong, static typing pour JavaScript

  2. Matthias Le Brun @bloodyowl Lead front end developer @ BeOpinion

    Putain de code
  3. None

  4. Node Element

  5. JavaScript • undefined is not a function • TypeError: Cannot

    read property "bar" of undefined • "undefined commentaires" • "You have [object Object] messages" • TypeError: TypeError • ReferenceError: Can't find variable: foo • NaN

  6. JavaScript Weakly typed

  7. JavaScript Dynamically typed

  8. JavaScript …

  9. «Workarounds» On peut documenter

  10. «Workarounds» On peut vérifier les types au runtime

  11. «Workarounds» On peut «ignorer» les soucis ¯\_(ϑ)_/¯

  12. None
  13. None

  14. Flow A static type checker for JavaScript

  15. None
  16. None

  17. Flow Détecte les incompatibilités

  18. Flow Détecte les incompatibilités

  19. Flow Permet d'annoter son code

  20. Flow

  21. Flow Comprend les built-ins

  22. Flow Aliases

  23. Flow Aliases

  24. Flow Generics

  25. Flow Generics

  26. Flow Interfaces

  27. Flow + React

  28. Transformer en JS valide

  29. Flow Peut fonctionner sans transformation

  30. Flow Code externe

  31. TypeScript • Différences de syntaxe mineures • Flow commence à

    fonctionner sans annotations et s'intègre mieux à un projet existant • TypeScript n'analyse pas les call-sites

  32. Merci Questions ? Matthias Le Brun @bloodyowl