CHANGES:

Features/Changes

• Lib: Added support for KeyboardEvent.getModifierState
• Misc: bump min ocaml version to 4.08
• Misc: remove some old runtime files to support some external libs
• Misc: switch to dune 3.7
• Effects: partial CPS transformation, resulting in much better performances, lower compilation time and smaller generated code
• Compiler: separate compilation can now drops unused units when linking (similar to ocamlc). (#1378)
• Compiler: specialize string to js-string conversion for all valid utf8 strings (previously just ascii)
• Compiler: JavaScript files generated by js_of_ocaml are now UTF-8 encoded.
• Compiler: use identifier for object literals when possible
• Compiler: Cache function arity (the length prop of a function is slow with v8)
• Compiler: The js lexer is now utf8 aware, recognize and emit utf8 ident
• Compiler: Update the js lexer with new number literal syntax
• Compiler: update js parser to support most es6 feature (#1391)
• Compiler: stop parsing the builtin js runtime if not necessary
• Compiler: improve js pretty printer (#1405)
• Compiler: improve debug location and speedup compilation (#1407)
• Toplevel: Enable separate compilation of toplevels
• Runtime: js backtrace recording controled by OCAMLRUNPARAM
• Runtime: support for zstd decompression of marshalled data (ocaml.5.1) (#12006)
• Runtime: stub out custom runtime events symbols for OCaml 5.1 (#1414)

Bug fixes

• Effects: fix Js.export and Js.export_all to work with functions (#1417,#1377)
• Sourcemap: fix incorrect sourcemap with separate compilation
• Compiler: fix control flow analysis; some annotions were wrong in the runtime
• Compiler: js backtrace recording respected in the js runtime and when using effects
• Compiler: no longer fail on invalid source file (when the file is a directory)
• Runtime: fix the compilation of some mutually recursive functions