Life & fun · alternatives · 2026
24 alternatives to Automatically generate fast validation functions for TypeScript types
A easy (and fast) typescript validation library/macro. Automatically generate validation functions for Typescript types. - vedantroy/typecheck.macro
Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. Automatically generate fast validation functions for TypeScript types launched in 2020; newer entries below may have overtaken it.
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A easy (and fast) typescript validation library/macro. Automatically generate validation functions for Typescript types. - vedantroy/typecheck.macro
2020 · github.com · its alternatives →
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Types generator will auto generate TS Interfaces from JSON
2022 · vineethtrv.github.io · its alternatives →
- 4
Let JSON play nicely with Typescript. Contribute to ostrowr/ts-json-validator development by creating an account on GitHub.
2019 · github.com · its alternatives →
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Hello, folks. I'm Jiang, the author of ESInfer. I love writing Javascript because it has a prosperous ecosystem and is quick to get my hands dirty. However, sometimes it's painful when the flow is not fast to follow due to the lack of a type system. To solve this, I wrote ESInfer, a statical inference tool, to automatically type check and generate type annotations for Javascript. It works with pure Javascript without any add-ons to the language or user-space code and supports highly dynamic features, such as the modification of prototypes. It is still in the very early stage, which offers…
2022 · esinfer.com · its alternatives →
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Millions of developers have used quicktype to generate ten billion lines of typesafe models, serializers, and validators from JSON, JSON Schema, and GraphQL in TypeScript, Python, Swift, C#, Go, Rust, Kotlin, Java, C++, Zod and more. Use it in the browser, from the command line, or give it to your A
2017 · quicktype.io · its alternatives →
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TypeScript 6.0▲156The Playground lets you write TypeScript or JavaScript online in a safe and sharable way.
Mar 2026 · typescriptlang.org · its alternatives →
- 8
Build Typed GraphQL Queries in TypeScript without the code generation - acro5piano/typed-graphqlify
2018 · github.com · its alternatives →
- 9
This TypeScript package allows you to safely execute JavaScript code within a WebAssembly sandbox using the QuickJS engine. Perfect for isolating and running untrusted code securely, it leverages the lightweight and fast QuickJS engine compiled to WebAssembly, providing a robust environment for code execution. Features - *Security*: Run untrusted JavaScript code in a safe, isolated environment. - *File System*: Can mount a virtual file system - *Custom Node Modules*: Custom node modules are mountable - *Fetch Client*: Can provide a fetch client to make http(s) calls - *Test-Runner*: Includes…
2024 · github.com · its alternatives →
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🛫 Zero-codegen, no-compile TypeScript `type` inference from protobuf `message`s - nathanhleung/protobuf-ts-types
2025 · github.com · its alternatives →
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Hi Hacker News! My name is Sagar, I’m working on a startup called Speakeasy - we’re making all APIs self-service. The platform is currently in beta, but we’re independently launching this tool which you can use to generate language-idiomatic, statically-typed TS SDKs from any public OpenAPI schemas. We hope to continue iterating on this to give devs a way to easily generate high fidelity client SDKs for all the major languages. Inspiration for this product is from past experiences struggling with OpenAPI. I was originally optimistic about using the OpenAPI tools to build out our offering,…
2022 · easysdk.xyz · its alternatives →
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A unit testing framework for TypeScript backends working with inversion of control and dependency injection - suites-dev/suites
2023 · github.com · its alternatives →
- 13JP
2021 · grgv.xyz · its alternatives →
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Elegant, highly efficient data validation for JavaScript. - lucono/xtypejs
2015 · github.com · its alternatives →
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Hey there HN! I just wrapped up an all-day documentation spree for Instant API, a JavaScript framework for easily building web APIs that implements type safety at the HTTP interface. It uses a function-as-a-service approach combined with a slightly modified JSDoc spec to automatically enforce parameter and schema validation before HTTP requests make it through to your code. You just write comments above your endpoint functions and voila, enforced type safety contracts between your API endpoints and your developers. OpenAPI specifications are generated automatically as a byproduct of simply…
2023 · github.com · its alternatives →
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Open sourcing Ezno's checker and trying out / previewing the JavaScript type checker today
2023 · github.com · its alternatives →
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Generate Typescript types from Golang source code. Contribute to gzuidhof/tygo development by creating an account on GitHub.
2022 · github.com · its alternatives →
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GraphQL APIs in TypeScript with complete e2e type safety
2021 · uniform-graphql.whatsgood.dog · its alternatives →
- 19VJ
2011 · rickharrison.github.com · its alternatives →
- 20AM
I made an open source, MIT license Typescript library based on some of the latest research that generates prompt injection attacks. It is a super minimal/lightweight and designed to be super easy to use. Keen to hear your thoughts and please be responsible and only pen test systems where you have permission to pen test!
2025 · prompt-injector.blueprintlab.io · its alternatives →
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Lightweight, Chainable TypeScript Validation
Oct 2025 · typyn.pages.dev · its alternatives →
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Run TypeScript snippets directly in Chrome DevTools
2024 · chromewebstore.google.com · its alternatives →
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Compile JSON Schema to TypeScript type declarations - bcherny/json-schema-to-typescript
2017 · github.com · its alternatives →
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I created LemmaScript to compile TypeScript to a verification backend (Dafny or Lean) and prove properties on the systematically derived model. I'll keep developing this, but I have a few case studies already, and it looks quite promising, with the caveat that each case study pushed the development of the core further. I can support both greenfield and brownfield projects, and in many cases, verification can be in-place: the TypeScript source is just annotated and verified independently but runs as is.
Apr 2026 · github.com · its alternatives →
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- TypeScript types that conform to JSON schemas without code generation alternatives
- ESInfer – Make JavaScript Type-Safe alternatives
- Quicktype – it's like Uber, but for JSON alternatives
Ranked by how close each launch is in meaning, then by votes. Prices were read from each product’s own site when checked and can change. Refine with your own description →