Upgrade to Pro
— share decks privately, control downloads, hide ads and more …
Speaker Deck
Features
Speaker Deck
PRO
Sign in
Sign up for free
Search
Search
Keep alive your typescript definitions using Zod
Search
Luca Del Puppo
January 16, 2023
Programming
0
110
Keep alive your typescript definitions using Zod
Luca Del Puppo
January 16, 2023
Tweet
Share
More Decks by Luca Del Puppo
See All by Luca Del Puppo
Aware dependencies using Nx Graph
puppo
0
73
Prisma the ORM that node was waiting for
puppo
0
97
How to scale up your projects like a pro
puppo
0
120
Alive, Tipi Sopravvisuti
puppo
0
110
ReactDay 2022 - Unit testing
puppo
0
100
How to scale up your angular projects like a pro
puppo
0
160
Prisma in the Air
puppo
0
410
Can typescript definitions survive even at runtime?
puppo
0
110
Is it possible to build your UI components using only web components?
puppo
0
83
Other Decks in Programming
See All in Programming
Processing Gem ベースの、2D レトロゲームエンジンの開発
tokujiros
2
120
Claude Codeで挑むOSSコントリビュート
eycjur
0
190
Kiroの仕様駆動開発から見えてきたAIコーディングとの正しい付き合い方
clshinji
1
200
ProxyによるWindow間RPC機構の構築
syumai
3
840
Rancher と Terraform
fufuhu
2
200
TDD 実践ミニトーク
contour_gara
1
280
MCPで実現するAIエージェント駆動のNext.jsアプリデバッグ手法
nyatinte
7
1k
オープンセミナー2025@広島「君はどこで動かすか?」アンケート結果
satoshi256kbyte
0
240
個人軟體時代
ethanhuang13
0
300
Updates on MLS on Ruby (and maybe more)
sylph01
1
180
オープンセミナー2025@広島LT技術ブログを続けるには
satoshi256kbyte
0
150
Go言語での実装を通して学ぶLLMファインチューニングの仕組み / fukuokago22-llm-peft
monochromegane
0
110
Featured
See All Featured
The Cost Of JavaScript in 2023
addyosmani
53
8.9k
Embracing the Ebb and Flow
colly
87
4.8k
I Don’t Have Time: Getting Over the Fear to Launch Your Podcast
jcasabona
33
2.4k
Refactoring Trust on Your Teams (GOTO; Chicago 2020)
rmw
34
3.1k
KATA
mclloyd
32
14k
Easily Structure & Communicate Ideas using Wireframe
afnizarnur
194
16k
The Cult of Friendly URLs
andyhume
79
6.6k
Optimising Largest Contentful Paint
csswizardry
37
3.4k
Keith and Marios Guide to Fast Websites
keithpitt
411
22k
Optimizing for Happiness
mojombo
379
70k
ピンチをチャンスに:未来をつくるプロダクトロードマップ #pmconf2020
aki_iinuma
126
53k
Connecting the Dots Between Site Speed, User Experience & Your Business [WebExpo 2025]
tammyeverts
8
510
Transcript
Keep alive your typescript definitions using Zod Luca Del Puppo
Who I am Luca Del Puppo (aka Puppo)
Full-Stack Developer @ Flowing a Claranet Company and Microsoft MVP @puppo92 https://www.linkedin.com/in/lucadelpuppo/
[email protected]
Typescript journey 1
10 years ago
The developers reaction
interface CustomerModel { id: number; name: string; email: string; phone:
string; } Interfaces
type CustomerModel = { id: number; name: string; email: string;
phone: string; }; Types
HTTP Request
But after a while…
➔ Typescript enables type check but on BUILT - TIME
➔ After the build all your types disappears ➔ After the build all your considerations about types dissolve Why?
Prevent ugly mistakes 2
Zod is your super hero
import { z } from ‘zod’; const CustomerSchema = z.object({
id: z.number(), name: z.string(), email: z.string(), phone: z.string(), }); Schema
import { TypeOf } from ‘zod'; type CustomerModel = TypeOf<typeof
CustomerSchema>; Convert to type
const res = CustomerSchema.parse({ id: 1, name: 'John Doe', email:
'
[email protected]
', phone: '555-555-5555' }); Parse method
➔ Parse throws an Error ➔ ZodError is the right
error to check ➔ ZodError contains all the issues that describe the errors Something wrong?
Do you hate exceptions? use safeParse
safeParse Success ➔ success: true ➔ data: Output Error ➔
success: false ➔ error: ZodError
Benefits of using Zod
Create a layer between your app and the outside V
a l i d a t i o n HTTP socket.io
Demo 3
Conclusion 4
➔ Typescript is awesome, but it’s good only on built
time ➔ Create a validation layer between your app and the outside • Prevent execution of code with wrong data • You can get notifications if something is changed ➔ Using Zod, you can guarantee your types, both built-time and run-time Conclusion
CODE SLIDE
Thanks! That’s All! Luca Del Puppo @puppo92 https://www.linkedin.com/in/lucadelpuppo/
[email protected]