reascript2hx

A small library that extracts the ReaScript Lua documentation and generates Haxe externs.

Generate externs

The default build reads the bundled Lua definitions and writes the generated classes to dist:

npm run generate

Inputs, output, and the Haxe package can be overridden for a downstream bindings project:

npm run generate -- \
  --reaper path/to/reaper_defs.lua \
  --imgui path/to/imgui_defs.lua \
  --output path/to/generated \
  --package my.reaper

Run node src/main.js --help for the available options.

The generated Reaper.hx, Graphics.hx, ImGui.hx, and Types.hx files are build artifacts. They may be overwritten on regeneration, so keep handwritten facades and application code outside the generated output directory.

When installed as a dependency, the CLI is also available as:

npx reascript2hx --output path/to/generated --package my.reaper

The package includes the generator source and bundled Lua definitions. A downstream bindings project should pin the generator version or Git commit and commit its generated Haxe output separately.

The documentation snapshot is tracked in resources/manifest.json. It records the source revision, commit date, fetch time, SHA-256 hash, and embedded API version when available. Run npm run updateLuaDocs to fetch a new snapshot and append the previous one to the manifest history.

Credits: Sexan for the Lua documentation provided by their awesome Reaper Reascript VSCode extension