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

ain't giving up type-safe Express

Avatar for andoshin11 andoshin11
May 19, 2020
Technology
490
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
100
カーナベルにおけるProtobuf二次利用例
Avatar for andoshin11 andoshin11
0
170
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
950
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
520
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
320
TS CompilerがVueを喋れても良いじゃないか
Avatar for andoshin11 andoshin11
0
790
Type Safe "Everything"
Avatar for andoshin11 andoshin11
0
290
Hack your Nuxt router!
Avatar for andoshin11 andoshin11
0
1.4k
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
"うちにはまだ早い"は本当？ ─ 小さく始めるPlatform Engineering入門
Avatar for Haruka Sakihara harukasakihara
5
460
色を視る
Avatar for yuzneri yuzneri
0
330
20260516_SecJAWS_Days
Avatar for Takuya Yonezawa takuyay0ne
1
210
Building Production-Ready Agents Microsoft Agent Framework
Avatar for Mert Metin _mertmetin
0
160
サービスの信頼性を高めるため、形骸化した「プロダクションミーティング」を立て直すまでの取り組み
Avatar for すてにゃん stefafafan
1
260
Oracle Base Database Service 技術詳細
Avatar for oracle4engineer oracle4engineer
PRO
15
100k
SREの仕事は「壊さないこと」ではなくなった 〜自律化していくシステムに、責任と判断を与えるという価値〜 / 20260515 Naoki Shimada
Avatar for SHIFT EVOLVE shift_evolve
PRO
1
110
Oracle Cloud Infrastructure presents managed, serverless MCP Servers for Oracle AI Database
Avatar for thatjeffsmith thatjeffsmith
0
220
Oracle Exadata Database Service on Cloud@Customer X11M (ExaDB-C@C) サービス概要
Avatar for oracle4engineer oracle4engineer
PRO
2
8k
（きっとたぶん）人材育成や教育のような何かの話
Avatar for Takanori Sejima sejima
0
680
AI駆動開発で生産性を追いかけたら、行き着いたのは品質とシフトレフトだった
Avatar for Koichiro Matsuoka littlehands
0
470
Claude Code / Codex / Kiro に AWS 権限を 渡すとき、何を設計すべきか
Avatar for Kazuki Adachi k_adachi_01
4
760

Featured

See All Featured
Money Talks: Using Revenue to Get Sh*t Done
Avatar for Nikki Halliwell nikkihalliwell
0
220
The SEO identity crisis: Don't let AI make you average
Avatar for Varn varn
0
460
Save Time (by Creating Custom Rails Generators)
Avatar for Garrett Dimon garrettdimon
PRO
32
3k
Claude Code のすすめ
Avatar for schroneko schroneko
67
220k
世界の人気アプリ100個を分析して見えたペイウォール設計の心得
Avatar for Akihiro Kokubo akihiro_kokubo
PRO
70
39k
We Have a Design System, Now What?
Avatar for Morgane Peng morganepeng
55
8.1k
CoffeeScript is Beautiful & I Never Want to Write Plain JavaScript Again
Avatar for Sam Stephenson sstephenson
162
16k
Agile Leadership in an Agile Organization
Avatar for Dr. Kim W Petersen kimpetersen
PRO
0
150
技術選定の審美眼（2025年版） / Understanding the Spiral of Technologies 2025 edition
Avatar for Takuto Wada twada
PRO
118
110k
brightonSEO & MeasureFest 2025 - Christian Goodrich - Winning strategies for Black Friday CRO & PPC
Avatar for Christian Goodrich cargoodrich
3
690
Skip the Path - Find Your Career Trail
Avatar for Mark Kilby mkilby
1
120
Tips & Tricks on How to Get Your First Job In Tech
Avatar for Honza Javorek honzajavorek
1
500

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