genType VS zod

Compare genType vs zod and see what are their differences.


Auto generation of idiomatic bindings between Reason and JavaScript: either vanilla or typed with TypeScript/FlowType. (by reason-association)


TypeScript-first schema validation with static type inference (by colinhacks)
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genType zod
5 253
759 27,110
- -
0.0 9.0
18 days ago 2 days ago
OCaml TypeScript
MIT License MIT License
The number of mentions indicates the total number of mentions that we've tracked plus the number of user suggested alternatives.
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.


Posts with mentions or reviews of genType. We have used some of these posts to build our list of alternatives and similar projects. The last one was on 2022-12-04.


Posts with mentions or reviews of zod. We have used some of these posts to build our list of alternatives and similar projects. The last one was on 2023-11-03.
  • Where DRY Applies
    3 projects | | 3 Nov 2023
    Author here: This specific example is a perfect case of the thing the post calls out! API boundaries are one of the most important places where we need to maintain invariants about our code base, one of the most important places that it is important not to have to worry about “keeping things in sync” as you say.

    In the TypeScript world, there are a number of libraries that can handle creating types from deserialization logic: Zod [1], Superstruct [2], Typebox [3], etc. – and Typebox specifically does what you are looking to do with MyPy. I do not know the Python ecosystem at all anymore (it has been a decade!) but I would be surprised if nothing like that exists. If it does, there is a good chance it is associated with the functional programming enthusiast corner of the Python community, so you might look there!


  • Show HN: Build type-safe web APIs with JavaScript, instantly
    5 projects | | 25 Oct 2023
  • I made a crate for bridging types between Rust and Zod / Typescript
    2 projects | /r/rust | 24 Oct 2023
    This means if you want to actually have reliable type-checking in typescript, you need to use a runtime schema framework like zod to verify that data coming in from the outside world is what you think it is.
  • The Ultimate Tech Stack for Building a Full-Stack MVP and Iterating Quickly
    13 projects | | 17 Oct 2023
    Forms are a big part of full-stack projects. In our experience, Zod and React Hook Form work great together and provide all the functionality one might need to create forms. In this combo, Zod provides schema validation (types, min/max bounds, lengths, enums, etc.) while React Hook Form gives a flexible API to interact with the form. With these two libraries, one can nest components that interact with the same form, perform different complex validations, and update the data on the fly. They make working with forms seem too easy.
  • Working with forms in SvelteKit coming from React
    3 projects | | 16 Oct 2023
    For the examples, I'll be using zod for both React and Svelte, but won't be using libraries for the sake of showing the differences. You should be able to use any other validation libraries you want with no problem, but since I'm more familiar with zod, that's what I'm goin to be using. It's good to know that I'll only handle validations on the server-side, that's why it's useless for us to save some variables state in Svelte.
  • Using OpenAPI to Detect Breaking Changes in tRPC
    7 projects | | 16 Oct 2023
    The tRPC router contains basic validation using Zod.
  • 3 great Typescript libraries to speed up your full stack development
    3 projects | | 13 Oct 2023
    Zod - schema validation for client and server
  • Desenvolvendo APIs fortemente tipadas de ponta a ponta com tRPC
    3 projects | | 10 Oct 2023
  • Creating a hackathon winning AI based app in a weekend using Supabase, OpenAI, & Next.js
    6 projects | | 10 Oct 2023
    This is my main component for the thread creation UI. You can see some imports and predefined prompt for OpenAI. Your prompt should be concise but to-the-point for best results. I have a few states I'm using to handle input changes. Once someone selects all inputs and then clicks on the Generate button. the whole input gets validated against a Zod schema and then is fed to the API route we created in the previous step. The generated response is being split into separate tweets and is then shown in the UI as a thread.
  • Best practices for HarperDB projects using TypeScript
    7 projects | | 9 Oct 2023
    For this we will need to create a schema that we can compare and validate our object against, this is the perfect use case for Zod! Zod is a TypeScript-first schema validation library that allows us to create schemas and validate our objects against them. Let's install it by running npm install --save zod.

What are some alternatives?

When comparing genType and zod you can also consider the following projects:

class-validator - Decorator-based property validation for classes.

joi - The most powerful data validation library for JS [Moved to:]

Yup - Dead simple Object schema validation

typebox - Json Schema Type Builder with Static Type Resolution for TypeScript

ajv - The fastest JSON schema Validator. Supports JSON Schema draft-04/06/07/2019-09/2020-12 and JSON Type Definition (RFC8927)

io-ts - Runtime type system for IO decoding/encoding

Superstruct - A simple and composable way to validate data in JavaScript (and TypeScript).

class-transformer - Decorator-based transformation, serialization, and deserialization between objects and classes.

runtypes - Runtime validation for static types

react-hook-form - 📋 React Hooks for form state management and validation (Web + React Native)

TypeScript - TypeScript is a superset of JavaScript that compiles to clean JavaScript output.

zod-to-json-schema - Converts Zod schemas to Json schemas