Show HN: A tool to Convert JSON schemas into TypeScript classes

• json-schema-to-deno-ts-util

  1 42 8.3 TypeScript

  Discontinued This is a tool that converts JSON schemas into TypeScript utility classes for use in Deno.

• Paste JSON as Code • quicktype

  64 1,671 0.0 JavaScript

  Xcode extension to paste JSON as Swift, Objective-C, and more

  

Nice! JSON schemas are really useful, we use them a lot for code generation. Another library that does this for multiple languages is https://quicktype.io/ . It's great, but not so actively developed.

• SurveyJS

  surveyjs.io sponsored

  Open-Source JSON Form Builder to Create Dynamic Forms Right in Your App. With SurveyJS form UI libraries, you can build and style forms in a fully-integrated drag & drop form builder, render them in your JS app, and store form submission data in any backend, inc. PHP, ASP.NET Core, and Node.js.

  

• quicktype

  96 11,498 8.7 TypeScript

  Generate types and converters from JSON, Schema, and GraphQL

  

I have the library demo linked from the homepage bookmarked: https://app.quicktype.io/ I use it every time I need to go from a pile of JSON to TypeScript types or zod declarations.

• json-schema-to-typescript

  7 2,763 6.0 TypeScript

  Compile JSONSchema to TypeScript type declarations

Nice! Lots of tricky edge cases to do this right: there’s ambiguity in the JSON Schema spec, version-to-version changes, many popular community conventions that don’t adhere to the spec, etc. Feel free to check out the tests to understand some of these: https://github.com/bcherny/json-schema-to-typescript (shameless plug — I have maintained this library for a number of years).

• hof

  33 475 8.9 Go

  Framework that joins data models, schemas, code generation, and a task engine. Language and technology agnostic.

  

You can pretty much make up any pseudo grammar like this one, which is a reduced JSON object that is close to CUE: https://github.com/hofstadter-io/hof/blob/_dev/flow/chat/pro...

No need to be formal or use a standard format

• json-schema

  1 188 8.1 JavaScript

  JSON Schema Validation, Annotation, and Bundling. Supports Draft 04, 06, 07, 2019-09, 2020-12, OpenAPI 3.0, and OpenAPI 3.1 (by hyperjump-io)

  

Ajv doesn't really do a great job at following the JSON Schema standard. I'd suggest taking a look at hyperjump.

https://github.com/hyperjump-io/json-schema

• unify-jdocs

  8 71 5.7 Java

  A new way of working with JSON documents without using model classes or JSON schemas

  

Nice! Talking of JSON schemas and validating JSON documents against schemas, for Java, I wrote unify-jdocs where I do not use JSON schemas but still do validations (I found them unwieldy to use and was looking for something simpler). You can find details here -> https://github.com/americanexpress/unify-jdocs. Also, no POJOs / model classes, just reading and writing JSON paths in a single line of code. It's helped us tremendously in managing complexity in a very large internal project. I am hoping it helps others.

• WorkOS

  workos.com sponsored

  The modern identity platform for B2B SaaS. The APIs are flexible and easy-to-use, supporting authentication, user identity, and complex enterprise features like SSO and SCIM provisioning.

  

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