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name: figjam-plugin description: FigJam plugin development workflow. Use when modifying code.ts (canvas rendering), ui.ts (WebSocket/UI), fixing plugin build errors, or adding new rendering features.

FigJam Plugin Development

Architecture

Critical: code.ts has NO browser APIs (window, document, fetch, WebSocket).

Communication

CopyCLI ←─ WebSocket ─→ ui.ts ←─ postMessage ─→ code.ts ←─ figma.* ─→ Canvas

Build & Import

Copycd packages/plugin && bun run build

Import: Figma Desktop → Plugins → Development → Import from manifest → packages/plugin/manifest.json

Debugging

• UI errors: Right-click plugin UI → Inspect
• Main errors: Plugins → Development → Open console

JSON Import

• Accepts DSL (nodes array) or IR (nodes object)
• Validates with @figram/core, normalizes to IR
• Errors shown in alert with path + message

Key Files