true-myth
nominal
true-myth | nominal | |
---|---|---|
1 | 3 | |
862 | 259 | |
2.0% | 0.0% | |
9.1 | 0.9 | |
4 days ago | about 1 year ago | |
TypeScript | TypeScript | |
MIT License | - |
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true-myth
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Unlocking type-safety superpowers in Typescript with nominal and refinement types
TS doesn't do anything at runtime no, but there are some type checking libraries that could help you. I don't know what packages you're talking about in particular, but if they are IO related you can try io-ts. More generally you could also look into true-myth for Maybe types and wrap any values that come out of your packages before allowing them to be passed into your code.
nominal
- Unlocking type-safety superpowers in TypeScript with nominal and refinement typ
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Unlocking type-safety superpowers in Typescript with nominal and refinement types
Hey OP here, Wanted to share something we recently discovered in typescript. This is a way to to create haskell style Newtype using the lesser known \`symbols\` ```ts type Minutes = number type Seconds = number const minutesToSeconds = (minutes: Minutes) => minutes * 60 const seconds: Seconds = 420 // uh-oh, we can use Minutes and Seconds interchangeably minutesToSeconds(seconds) ``` Nominal types solve this problem ```ts import { Nominal, nominal } from 'nominal-types'; type Minutes = Nominal<'Minutes', number>; type Seconds = Nominal<'Seconds', number>; const minutesToSeconds = (minutes: Minutes) => minutes * 60 // You can directly type cast or use nominal.make const seconds = nominal.make(420) const minutes = 1337 as Minutes // doesn't work, yay type safety minutesToSeconds(seconds) // does work! minutesToSeconds(minutes) ``` We have some lot cooler examples https://github.com/modfy/nominal#examples You can also read more about it here: https://zackoverflow.dev/writing/nominal-and-refinement-types-typescript
What are some alternatives?
rxjs-ninja - RxJS Operators for handling Observable strings, numbers, booleans and more
type-fest - A collection of essential TypeScript types
persisted-requests - [Beta] Ensure client REST requests are not lost in event of catastrophic failure / early program termination. Demo is in the link.
Elm - Compiler for Elm, a functional language for reliable webapps.
complish - Generate auto-completion for any CLI via ChatGPT.
typescript-runtime-type-benchmarks - 📊 Benchmark Comparison of Packages with Runtime Validation and TypeScript Support
zod - TypeScript-first schema validation with static type inference
DreamCompose - A simple and easy-to-use framework for developing web application interfaces and websites. Create attractive user interfaces easily and intuitively.
io-ts - Runtime type system for IO decoding/encoding