frameos-editor

The FrameOS visual scene editor — the same node-graph editor the FrameOS backend ships — as an embeddable static bundle. No backend needed: the app catalog and app sources are embedded at build time, scenes go in and come back out as JSON over postMessage. The editor carries the full scene workspace: the node diagram plus side panels for scene settings, state variables, the app catalog, events and raw scene JSON; app sources open in a Monaco editor modal. When the frameos-wasm package's assets are served next to the bundle (at ./frameos-wasm/ relative to dist/), the Preview panel runs the edited scenes live through the FrameOS WebAssembly runtime — canvas, scene state and runtime logs included.

The package version always equals the FrameOS release it was built from.

License: AGPL-3.0-only. The editor is FrameOS code. The intended embedding model is an iframe served from your own host, talking to your page over the documented postMessage protocol — the editor stays a separate program at arm's length, whatever the license of the embedding page. If you modify the bundle itself, AGPL terms apply to those modifications.

Usage

Serve this package's dist/ directory from your host (e.g. copy it to /frameos-editor/), then:

import { createFrameOSEditor } from 'frameos-editor'

const editor = createFrameOSEditor({
  container: document.getElementById('editor'),
  url: '/frameos-editor/index.html',
  scenes,               // parsed scenes.json
  width: 800,
  height: 480,
  onScenesChanged: (scenes) => console.log('edited', scenes),
})

const edited = await editor.getScenes()
editor.destroy()

postMessage protocol

Parent → editor:

• {type: 'frameos-editor:init', scenes, sceneId?, mode?, width?, height?, interval?, theme?, previewProxyUrl?, description?} — theme is 'light' | 'dark'; previewProxyUrl is an optional same-origin endpoint the in-editor wasm live preview routes CORS-blocked HTTP requests through; description is the embedding page's description of the scene, shown in the Scene settings panel
• {type: 'frameos-editor:get-scenes'} — replies with a :scenes message
• {type: 'frameos-editor:select-scene', sceneId}

Editor → parent:

• {type: 'frameos-editor:ready'} — once listening (the helper auto-sends init on this)
• {type: 'frameos-editor:scenes', scenes} — after every edit (debounced) and as the :get-scenes reply
• {type: 'frameos-editor:save-screenshot', dataUrl, sceneId} — the Preview panel captured a frame; reply with {type: 'frameos-editor:screenshot-saved', ok, error?, fallbackDownload?} to store it yourself, or stay silent and the editor downloads the PNG locally after a short timeout

Demo

demo.html shows the scene list, the editor, and (when the frameos-wasm package's assets are served next to it at ./frameos-wasm/) a live WebAssembly preview of the edited scenes — everything running in the browser.

Development (FrameOS repo)

The bundle is built by frontend/build.mjs ("FrameOS Embedded Editor" config: the regular editor code with frameLogic/logsLogic swapped for in-memory shims, see frontend/src/embed/) into frontend/dist-editor/, and copied into this package's dist/ by npm run build. Smoke test: node frontend/scripts/smokeEditorEmbed.mjs.