Introducing tree‑sitter‑objectscript: High‑Performance Syntax Parsing for ObjectScript in Your Favorite Editors

I’m pleased to announce the release of tree-sitter-objectscript, a new open-source tree-sitter grammar that brings first-class ObjectScript support to modern editors. If you caught the preview at READY ’25, you’ll be glad to know it’s now up on Github:

https://github.com/intersystems/tree-sitter-objectscript

What Does It Provide?

• Fast & Precise Parsing: A powerful grammar for ObjectScript, enabling real-time syntax parsing, smart highlighting, and structural editing in modern code editors.
• Polyglot-Awareness: ObjectScript .cls files often embed SQL, HTML, Python, JavaScript, JSON, CSS, XML, and Markdown. The grammar is designed to integrate with those seamlessly.
• Multi-Editor Support: Works across multiple editors today, with others coming as tree-sitter adoption grows.

Supported Editors

We've been working with tree-sitter-objectscript and the following editors:

• Zed (zed.dev) – Available as a Zed Extension for ObjectScript
• Neovim (via nvim-treesitter) – Requires a little local lua configuration
• Emacs (29.1+) – A dedicated major mode for ObjectScript in Emacs

Screenshot (Zed)

(this is actually Zed on Windows with a Tokyo Night Storm theme).

We’re excited to see how the community uses this — feedback and ideas are always welcome!

Thanks!