Reason is a programming language that compiles to JavaScript and leverages the OCaml ecosystem while maintaining type safety.
Reason addresses the challenge of writing type-safe code that runs on JavaScript by providing a syntax and toolchain built on OCaml's proven type system. It allows developers to write in a language with strong static typing guarantees while targeting JavaScript environments and benefiting from OCaml's mature compiler infrastructure. The language compiles down to JavaScript, making it suitable for web development while retaining the safety properties of a statically typed language.
Reason suits developers who value type safety and want to avoid common JavaScript runtime errors without sacrificing access to the JavaScript ecosystem. It works well for projects where the benefits of OCaml's type system justify learning a different syntax, and where the ability to interoperate with both JavaScript and OCaml libraries is valuable. The project is particularly relevant for teams already familiar with functional programming or those migrating from OCaml who need to target web platforms.
The project maintains active continuous integration across multiple build systems. Contributor documentation is organized within the repository to support those working on the language itself, separate from user-facing documentation hosted externally. The community maintains a Discord channel for discussion and support.
