Popular Libraries For Building Type-safe Web Application APIs

1. typebox

   1 64 5,663 8.7 TypeScript

   Json Schema Type Builder with Static Type Resolution for TypeScript

   

   The documentation can be found here.

2. SurveyJS

   surveyjs.io featured

   JavaScript Form Builder with No-Code UI & Built-In JSON Schema Editor. Add the SurveyJS white-label form builder to your JavaScript app (React/Angular/Vue3). Build complex JSON forms without coding. Fully customizable, works with any backend, perfect for data-heavy apps. Learn more.

   

3. zod

   2 369 37,731 9.0 TypeScript

   TypeScript-first schema validation with static type inference

   

   You can check out their documentation here.

4. class-validator

   3 32 11,387 4.8 TypeScript

   Decorator-based property validation for classes.

   

   You can learn more from the documentation here.

5. Superstruct

   4 28 7,115 6.9 TypeScript

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

   

   You can check out Superstruct documentation here.

6. tempo

   5 13 401 7.0 TypeScript

   🥁 Don't miss a beat. Real-time, end-to-end typesafe APIs. (by betwixt-labs)

   

   There are still a few more libraries in development. An example is Tempo by betwixt-labs.

7. ajv

   6 70 14,199 6.8 TypeScript

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

   

   Ajv’s documentation is available here.

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