- Cloudflare Worker + Durable Object server (packages/collab/)
- One DO per room with WebSocket Hibernation for near-zero idle cost
- Yjs sync protocol for document state (CRDT merge)
- Yjs awareness protocol for cursors, selection, presence
- Persists doc state to DO storage
- CORS headers for cross-origin WebSocket upgrade
- Client composable (src/composables/use-collab.ts)
- Y.Doc ↔ SceneGraph bidirectional binding
- Awareness: broadcasts cursor position, selection, name, color
- Auto-join from /share/:roomId URL
- Suppresses echo loops between Yjs and graph updates
- CollabPanel component (src/components/CollabPanel.vue)
- Share button generates room link, copies to clipboard
- Join flow: paste link or room ID
- Avatar stack with colored initials and tooltips
- Name input persisted to localStorage
- Remote cursor rendering in CanvasKit
- Colored arrow cursor + name label pill per remote peer
- Remote selection outlines in peer's color
- Only shows cursors on the same page
- SPA redirect for /share/* routes (Cloudflare Pages _redirects)
- sceneNodeToJsx() in @open-pencil/core: converts SceneNode subtree to JSX
- CodePanel.vue with Prism.js highlighting, line numbers, copy button
- Third tab in properties panel: Design | Code | AI
- 14 new tests covering shapes, text, layout, effects, multi-selection
Use markRaw to prevent Vue from deep-proxying the Chat class
instance, which broke its internal Vue refs. Add dedent for
multiline prompts.
Tests use mock transport by default. Set TEST_REAL_LLM=1 and
OPENROUTER_API_KEY to run against real OpenRouter.
Commands:
- open-pencil info <file> — document stats, node types, fonts
- open-pencil tree <file> — visual node tree with agentfmt
- open-pencil find <file> — search by name/type with rich output
- open-pencil export <file> — render to PNG/JPG/WEBP at any scale
Uses canvaskit-wasm/full for headless CPU rasterization.
All commands support --json for machine-readable output.
agentfmt provides consistent colored terminal formatting.
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
