Josh Meredith authored Mar 06, 2023 and Marge Bot committed Apr 13, 2023

* Add the Callback module for "exporting" Haskell functions
to be available to plain JavaScript code

* Fix some primitives defined in GHC.JS.Prim

* Add a JavaScript section to the user guide with instructions
on how to use the JavaScript FFI, building up to using Callbacks
to interact with the browser

* Add tests for the JavaScript FFI and Callbacks