GitHub - ronami/HypeScript: 🐬 A simplified implementation of TypeScript's type system written in TypeScript's type system

This is a simplified implementation of TypeScript's type system that's written in TypeScript's type annotations. This means that it uses types only — with no runtime code whatsoever.

You pass TypeScript code as a string to the TypeCheck generic and get possible type errors back (See the live demo):

☝ Please note that this project is meant to be used for fun and learning purposes and not for practical use.

Alternatively, install @ronami/hypescript in your project with yarn or npm (TypeScript 4.7 or later is required):

yarn add @ronami/hypescript

Only a subset of TypeScript's syntax and features are available. Here's a list of examples (with browser demo links) for some code examples: