Upgrade to Pro — share decks privately, control downloads, hide ads and more …
Sign up for free

ain't giving up type-safe Express

Sponsored · SiteGround - Reliable hosting with speed, security, and support you can count on. →
Avatar for andoshin11 andoshin11
May 19, 2020
Technology
520
2

ain't giving up type-safe Express

Avatar for andoshin11

andoshin11

May 19, 2020

More Decks by andoshin11

See All by andoshin11
Introduction to gRPC Interceptors
Avatar for andoshin11 andoshin11
0
130
カーナベルにおけるProtobuf二次利用例
Avatar for andoshin11 andoshin11
0
180
Envoy External AuthZとgRPC Extensionを利用した「頑張らない」Microservices認証認可基盤
Avatar for andoshin11 andoshin11
0
1k
カーナベル株式会社2024年2月 エンジニアイベント資料
Avatar for andoshin11 andoshin11
0
570
Private Cloudを支える最高のユーザーガイド運用技術
Avatar for andoshin11 andoshin11
0
330
TS CompilerがVueを喋れても良いじゃないか
Avatar for andoshin11 andoshin11
0
830
Type Safe "Everything"
Avatar for andoshin11 andoshin11
0
330
Hack your Nuxt router!
Avatar for andoshin11 andoshin11
0
1.5k
GatewayパターンとSchema駆動開発
Avatar for andoshin11 andoshin11
7
1.6k

Other Decks in Technology

See All in Technology
Issue 駆動でスペシャリストの意図を届ける、AI 実装のアクセシビリティ向上
Avatar for thkt thkt
0
120
事業課題から技術的負債に向き合う
Avatar for SansanTech sansantech
PRO
2
2.1k
安心して変更できるWebフロントエンドの作り方
Avatar for Hiroyuki ANAI pirosikick
5
2.8k
AIによるクリエイティブ生成を行う上での試行錯誤
Avatar for PLAID Tech plaidtech
PRO
0
160
AIは推し活である。
Avatar for くらず / Kurazu kurazuuuuuu
1
910
時うどん〜Socket.getifaddrsで学ぶネットワーク編 / Tokiudon: The Socket.getifaddrs Edition
Avatar for Misaki Shioi(塩井美咲/しおい) coe401_
3
200
Railsのように考える: See through the Master
Avatar for Koji SHIMADA snoozer05
PRO
4
1.2k
C#コードの結合を可視化する Roslyn解析による設計改善と リファクタリング判断
Avatar for dora56 dora56
0
260
EventBridge に「合流」はない ― サーバーレスのワークフローを育てるということ / No Join in EventBridge
Avatar for Yusuke Shimizu yusukeshimizu
2
370
The Knowledge Spine: A Machine-Executable Ontology for Governed Marketing Activation
Avatar for Ananth Packkildurai vananth22
0
120
「どのログを見ればいい？」 から始めた サーバーレス障害解析
Avatar for y_waka1 y_waka1
1
110
品質と信頼性を地続きにする
Avatar for gr1m0h grimoh
2
850

Featured

See All Featured
How to build an LLM SEO readiness audit: a practical framework
Avatar for Nick Samuel nmsamuel
1
910
Building Adaptive Systems
Avatar for Chris Keathley keathley
44
3.2k
Joys of Absence: A Defence of Solitary Play
Avatar for Sebastian Deterding codingconduct
1
530
Organizational Design Perspectives: An Ontology of Organizational Design Elements
Avatar for Dr. Kim W Petersen kimpetersen
PRO
1
830
Exploring the relationship between traditional SERPs and Gen AI search
Avatar for Ray Grieselhuber raygrieselhuber
PRO
3
4.3k
Typedesign – Prime Four
Avatar for Hannes Fritz hannesfritz
42
3.2k
YesSQL, Process and Tooling at Scale
Avatar for Rocio Delgado rocio
174
15k
RailsConf 2023
Avatar for Aaron Patterson tenderlove
30
1.6k
SEO for Brand Visibility & Recognition
Avatar for Aleyda Solis aleyda
0
4.7k
Winning Ecommerce Organic Search in an AI Era - #searchnstuff2025
Avatar for Aleyda Solis aleyda
2
2.1k
JAMstack: Web Apps at Ludicrous Speed - All Things Open 2022
Avatar for David Neal reverentgeek
1
600
Measuring Dark Social's Impact On Conversion and Attribution
Avatar for Stephen Akadiri stephenakadiri
2
280

Transcript

  1. ain’t giving up
 type-safe Express
 @andoshin11
 19. 5. 2020
 #隅田川.js


  2. Who am I ?
 hin Ando (a.k.a Andy)
 @andoshin11
 -

    Freelance Full- tack Developer
 - ype cript / Vue.js / eact / Go / uby / erraform / etc… 
 - ❤ Code Generation!


  3. ecent Works:
 typescript-error-reporter-action

  4. ecent Works:
 vue-type-audit

  5. Express with ype cript


  6. What’s new with @types/express
 • Generic eq/ es ype
 •

    H Methods Awareness (← my first contribution!!)
 • Generic uery arameter ype
 • Enhanced Middleware ype
 • Improved ame- ite Cookie options 
 • and more...


  7. oute handlers


  8. None

  9. oute handlers
 Dictionary ype
 bject ype
 any
 Can send anything


  10. Mapping Handler ypes


  11. Mapping Handler ypes


  12. eparating Declaration
 Multiple handler types can be defined for different

    paths


  13. H Method Distinction
 eceives Method type as a Generic input


  14. Am I really doing this...


  15. Let the tools do their jobs!!


  16. typed-oax


  17. typed-oax
 Open API Open API AST TypeScript AST Handler Types(d.ts)

    Generate Handler ypes using pen A I & A arser 


  18. typed-oax
 DEM