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
2
440

ain't giving up type-safe Express

Avatar for andoshin11

andoshin11

May 19, 2020
Tweet

More Decks by andoshin11

See All by andoshin11
カーナベルにおけるProtobuf二次利用例
Avatar for andoshin11 andoshin11
0
110
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
650
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
340
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
300
TS CompilerがVueを喋れても良いじゃないか
Avatar for andoshin11 andoshin11
0
740
Type Safe "Everything"
Avatar for andoshin11 andoshin11
0
250
Hack your Nuxt router!
Avatar for andoshin11 andoshin11
0
1.3k
GatewayパターンとSchema駆動開発
Avatar for andoshin11 andoshin11
7
1.4k
Catch up Nuxt.js 2019.02
Avatar for andoshin11 andoshin11
0
2.1k

Other Decks in Technology

See All in Technology
CDKコード品質UP！ナイスな自作コンストラクタを作るための便利インターフェース
Avatar for Haruka Sakihara harukasakihara
2
200
QuickSight SPICE の効果的な運用戦略～S3 + Athena 構成での実践ノウハウ～/quicksight-spice-s3-athena-best-practices
Avatar for emi emiki
0
260
CDKTFについてざっくり理解する！！～CloudFormationからCDKTFへ変換するツールも作ってみた～
Avatar for モブエンジニア masakiokuda
1
200
Four Keysから始める信頼性の改善 - SRE NEXT 2025
Avatar for ozaki-kota ozakikota
0
210
スタックチャン家庭用アシスタントへの道
Avatar for Hiroyuki Kaneko kanekoh
0
110
Operating Operator
Avatar for Jun Kokatsu shhnjk
1
650
How to Quickly Call American Airlines®️ U.S. Customer Care : Full Guide
Avatar for goldfinch3710 flyaahelpguide
0
240
オフィスビルを監視しよう：フィジカル×デジタルにまたがるSLI/SLO設計と運用の難しさ / Monitoring Office Buildings: The Challenge of Physical-Digital SLI/SLO Design & Operation
Avatar for 株式会社ビットキー / Bitkey Inc. bitkey
1
350
OpenTelemetryセマンティック規約の恩恵とMackerel APMにおける活用例 / SRE NEXT 2025
Avatar for mackerelio mackerelio
3
1.6k
助けて! XからWaylandに移行しないと新しいGNOMEが使えなくなっちゃう 2025-07-12
Avatar for Nobuto Murata nobutomurata
2
140
Claude Code に プロジェクト管理やらせたみた
Avatar for 佐藤圭吾 unson
8
4.9k
伴走から自律へ： 形式知へと導くSREイネーブリングによる プロダクトチームの信頼性オーナーシップ向上 / SRE NEXT 2025
Avatar for Visional Engineering ＆ Design visional_engineering_and_design
3
230

Featured

See All Featured
Become a Pro
Avatar for Speaker Deck speakerdeck
PRO
29
5.4k
Navigating Team Friction
Avatar for Lara Hogan lara
187
15k
The World Runs on Bad Software
Avatar for Brandon Keepers bkeepers
PRO
69
11k
The Myth of the Modular Monolith - Day 2 Keynote - Rails World 2024
Avatar for Eileen M. Uchitelle eileencodes
26
2.9k
Fight the Zombie Pattern Library - RWD Summit 2016
Avatar for Marcelo Somers marcelosomers
233
17k
Writing Fast Ruby
Avatar for Erik Berlin sferik
628
62k
Gamification - CAS2011
Avatar for David Bonilla davidbonilla
81
5.4k
Visualizing Your Data: Incorporating Mongo into Loggly Infrastructure
Avatar for mongodb mongodb
47
9.6k
A Tale of Four Properties
Avatar for Chris Coyier chriscoyier
160
23k
Rails Girls Zürich Keynote
Avatar for Gregor Martynus gr2m
95
14k
How to Ace a Technical Interview
Avatar for Jacob Kaplan-Moss jacobian
278
23k
個人開発の失敗を避けるイケてる考え方 / tips for indie hackers
Avatar for panda_program panda_program
107
19k

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