I'm not sure how you missed it, but right from the main Reason web page(https://reasonml.github.io/) there is a link to the Github repo for one of the ReasonML syntax (https://github.com/facebook/reason) which has a link to the latest Release on npm which was four months ago. Where did you get the 18 months figure? (You might have stumbled upon some old docs). There is also an important PR in progress for async syntax extension, which will form the next release.
That Reason repo is just for the parser which is only one of the many pieces of infrastructure under the Reason umbrella (an important one though). Also follow BuckleScript, and esy for example.
That Reason repo is just for the parser which is only one of the many pieces of infrastructure under the Reason umbrella (an important one though). Also follow BuckleScript, and esy for example.