d2-to-drawio: convert D2 diagrams to editable draw.io files

[Moawiah188]

I built a converter that turns D2 source into native draw.io / diagrams.net files: shapes, containers, edges, styles, themes, and layout positions all come across as editable elements, not an exported image.

It runs the official D2 WASM build (@terrastruct/d2) for parsing and layout, so vars, globs, classes, and imports behave exactly like d2 itself. Boards become draw.io pages. Unsupported features degrade with warnings instead of failing, and a feature matrix documents exactly what converts fully, partially, or not at all.

A workflow this unlocks: LLMs write D2 fluently (no coordinates to invent, autolayout does the placement), so you can draft a diagram with Claude or ChatGPT, convert, and hand-polish the result in draw.io instead of being stuck with an SVG.

npx d2-to-drawio diagram.d2 -o diagram.drawio

Repo: https://github.com/Moawiah188/d2-to-drawio
Feedback and broken .d2 samples very welcome.