A superset of JavaScript that compiles to clean JavaScript output.

The repository for high quality TypeScript type definitions.

Collection of TypeScript type challenges with online judge

TypeScript-first schema validation with static type inference

Adds static typing to JavaScript to improve developer productivity and code quality.

A collection of essential TypeScript types

Functional programming in TypeScript

Simple, fast & type safe code that leverages the JavaScript & OCaml ecosystems

A strongly-typed language that compiles to JavaScript

A 'CSS reset' for TypeScript, improving types for common JavaScript API's

Documentation generator for TypeScript projects.

Generate TypeScript types from OpenAPI 3 specs

TypeScript's 1:1 validator, optimized from editor to runtime

JSON Schema Type Builder with Static Type Resolution for TypeScript

TypeScript Compiler API wrapper for static analysis and programmatic code changes.

Super-fast/easy runtime validators and serializers via transformation

All essential TypeScript types in one place

modular high-performance TypeScript framework

An idiomatic protobuf generator for TypeScript

Generate JSON schema from your Typescript sources

Tool for analyzing TypeScript types of npm packages

A form data validation library for Node.js

Generate Typescript types from Postgres

Augment the TypeScript compiler to support extended functionality

A tiny library + linter and AI skill implementation of Ghosts of Departed Proofs for TypeScript, a verification system to make API contracts more secure at compile (type check) time.

A Typescript framework to help you get an API server up and running with I/O schema validation and custom middlewares in minutes.

Compile-time tests for types. Useful to make sure types don't regress into being overly-permissive as changes go in over time.

Everything You Need for Type Testing.