Move engine (scene-graph, renderer, layout, codec, kiwi) into
packages/core/ as a Bun workspace package. The app's src/engine/
files become thin re-export shims so all existing imports still work.
- Bun workspace with packages/core
- Zero DOM dependencies in core
- Headless-friendly CanvasKit init (locateFile option)
- Constants split: engine constants in core, UI constants in app
- All 76 unit tests pass, lint + typecheck clean, vite build works
- Replace deflate with Zstd compression via zstd-wasm for .fig export
(Figma expects Zstd, not zlib deflate)
- Extract IS_TAURI constant from repeated window check
- Fix Tauri fs permissions: use allow-write-file / allow-read-file
with glob scope instead of bare allow-write / allow-read
- Fork kiwi-schema from source TypeScript (evanw/kiwi), drop npm dep + patch
- Deduplicate GUID/Color types into src/types.ts
- Extract UI colors and default fills into src/constants.ts
- Replace hand-rolled hex parsing with culori library
- Extract demo shapes from App.vue into src/demo.ts
- useUrlSearchParams from VueUse for test mode detection
- Move fig-file/fig-import into kiwi/ (format layer)
- Delete PoC files (poc-yoga.ts, poc-test.ts)
File parser:
- .fig files are ZIP archives with Kiwi-encoded canvas data
- Detects canvas blob by name (canvas.fig) or largest binary entry
- Decodes Kiwi Message → NodeChange[] → SceneGraph
Node conversion:
- Maps Figma types to OpenPencil types (COMPONENT → FRAME, etc.)
- Extracts position from transform matrix (m02, m12)
- Extracts rotation from transform matrix (atan2)
- Converts fillPaints/strokePaints to Fill[]/Stroke[]
- Converts effects (shadows, blurs)
- Handles independent corner radii
- Preserves text properties (font, size, alignment, spacing)
- Builds parent-child tree from parentIndex GUIDs
- Sorts children by parentIndex.position
Browser compatibility:
- fzstd for Zstd decompression (replaces Bun.zstd*)
- fflate for ZIP extraction
- Cmd+O opens file dialog for .fig files
- UndoManager.clear() for resetting on file open
