This repository provides a toolkit for developing JavaScript for Automation (JXA) scripts on macOS using TypeScript. It includes packages for running JXA code from Node.js (@jxa/run), an interactive REPL (@jxa/repl), type definitions for macOS applications (@jxa/types and @jxa/global-type), and a tool to generate TypeScript definitions from Apple's SDEF files (@jxa/sdef-to-dts). The monorepo structure (managed by Lerna) separates concerns into focused packages, enabling type-safe and efficient automation of macOS applications.