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
3 97
750 11,716
0.8% -
7.8 9.4
29 days ago 8 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.
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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 2022-01-12.


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 2022-09-20.
  • Learn how to unleash the full potential of the type system of TypeScript
    11 projects | | 20 Sep 2022
    fp-ts [0] and the accompanying io-ts [1] are very well designed and neatly implemented. I'd consider them the reference for all things FP in Typescript.

    In practice though I find that they don't mesh well with the language and ecosystem at large. Using them in a React/Vue/Whatever app will catch you at every step, as neither the language nor the frameworks have these principles at their core. It takes a lot of effort to escape from their gravitational pull. Using Zod [2] for your parsing needs and strict TS settings for the rest feel more natural.

    It could work in a framework-agnostic backend or logic-heavy codebase where the majority of the devs are in to FP and really want / have to use Typescript.

    0 -

    1 -

    2 -

  • What should we do if we have a variable whose value we dont know what it will be ?
    3 projects | | 10 Sep 2022
    The thing you're looking for is a library like zod or io-ts, which allow you to build arbitrarily complex type guards, without having to separately declare a matching type or interface. TypeScript infers the type from the type checker.
  • Modern React Data-Fetching with TypeScript, React-Query, and Zod
    4 projects | | 2 Sep 2022
    The second piece is Zod. While there are a lot of validation libraries out there, Zod is the current frontrunner and you should be using it unless you absolutely, positively have a reason to use something else. Zod's validation and ability to easily infer TypeScript types is going to be key to typing our untyped API.
  • Wrighter (β) - A Powerful Markdown Blogger & A Writing Companion ⚡
    10 projects | | 2 Sep 2022
    I wanted to use something new for wrighter and that's why I used fastify. I was more of an express guy before. The ability to add validator schemas was new to me in node backends, combining this with zod and typescript became confusing. There were several situations where I was missing fields for responses because I forgot to add them to the schema. I blame myself for that lol
  • tRPC: The best way to build APIs in 2022?
    2 projects | | 26 Aug 2022
    First of all, it’s best to define the schemas. In my case, I’ll be querying PokéAPI, which is using REST, so I’ll manually define the expected response using Zod.
  • Advanced TypeScript Patterns: API Contracts
    3 projects | | 22 Aug 2022
    Isn't used for this use case?
  • Which tools do you use to validate forms?
    6 projects | | 17 Aug 2022
    I've found zod to be a pretty powerful validation library (porting over from react/typescript). Normally, the mindset for using something like zod is that you sorta have to imagine forms as essentially objects with keys marking the state of the form.
  • a first look at create-t3-app
    14 projects | | 13 Aug 2022
    We want to be able to query an individual blog post based on its id. Since we will be sending data to the database, we need to validate the input. zod is a TypeScript schema validator with static type inference. We'll also import TRPCError for error handling.
  • What are your struggles when working with forms in react ?
    7 projects | | 12 Aug 2022
    Lately I've been favoring zod over yup for its slightly improved TypeScript compatibility. I've also been itching to give a shot.
  • Build a full stack app with create-t3-app
    6 projects | | 11 Aug 2022
    Here we have a tRPC mutation that uses zod to validate the input and has a resolve function that runs a simple prisma query to create a new row in the Guestbook table.

What are some alternatives?

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

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

Yup - Dead simple Object schema validation

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

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

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

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

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

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

runtypes - Runtime validation for static types

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

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

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