Agent skill

figjam-plugin

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

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Forks 31

Install this agent skill to your Project

npx add-skill https://github.com/majiayu000/claude-skill-registry/tree/main/skills/data/figjam-plugin

SKILL.md

FigJam Plugin Development

Architecture

Thread File APIs Role
Main code.ts figma.* only Canvas rendering
UI ui.ts Browser APIs WebSocket client, connection UI

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

Communication

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

Build & Import

bash
cd 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

File Purpose
manifest.json Plugin config
src/code.ts Canvas rendering
src/ui.ts WebSocket + UI
src/icons/ Service icons

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