You are currently looking at the v6.0 - v8.2 docs (Reason v3.6 syntax edition). You can find the latest manual page here.
(These docs are equivalent to the old BuckleScript docs before the ReScript rebrand)
If you can't find what you're looking for: sometimes you don't need a wrapper to use a JS library:
Most JS data types, such as array and objects, map over cleanly to ReScript and vice-versa.
You also have access to the familiar JS API.