# ReasonML ReasonML is a new syntax and toolchain for the OCaml language. It was created at Facebook and is extensively used in Facebook Messenger. Reason provides a rock solid type system and is immutable and functional by default. It compiles eo Javascript or native OCaml and plays well with React. ### Links * [ReasonML website](https://reasonml.github.io/) * [Create React app with ReasonML](https://medium.com/@DmytroGladkyi/create-react-app-with-reasonml-aa9c03849c3b) * [Restack: Full-Stack ReasonML](https://github.com/dysinger/restack) --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://wiki.fruetel.net/software-engineering/reasonml.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.