Hacker News: justindmassey

New comment by justindmassey in "Ask HN: What are you working on? (June 2026)"

justindmassey — Sun, 14 Jun 2026 20:46:30 +0000

Im working on a web-based general purpose tree editor with some unique features. https://github.com/justindmassey/tree-editor

Tree Editor – apply and remove types without breaking your data

justindmassey — Sat, 28 Mar 2026 07:00:00 +0000

Article URL: https://github.com/justindmassey/tree-editor

Comments URL: https://news.ycombinator.com/item?id=47552270

Points: 2

# Comments: 0

Show HN: Diamond – an interactive CLI for editing trees

justindmassey — Sat, 07 Mar 2026 13:03:15 +0000

Article URL: https://github.com/justindmassey/diamond

Comments URL: https://news.ycombinator.com/item?id=47287293

Points: 4

# Comments: 0

Show HN: Tree Editor – A Visual Structured Data Editor with Type Inheritance

justindmassey — Fri, 21 Nov 2025 15:45:01 +0000

I built Tree Editor, a visual editor for structured data. It lets you define types (::Type), apply them to nodes (.Type), and the editor keeps everything consistent automatically. Changing a type updates all matching nodes instantly.

It also supports list types, a live preview pane, and interactive widgets (tables, headers, links, text areas, tabs). Everything runs locally in the browser, with no dependencies.

It’s useful for AI agent schemas, game data, configs, knowledge trees, and anything hierarchical.