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Vance Ingalls
b81f494117
Clears three of the branch's gated fallow complexity findings by giving each
step of the sync its own named function, all in a new timelineSyncHydration.ts:
- processTimelineMessage (22 cyclomatic / 24 cognitive / 132 lines) -> the
clip-tree parent map, the sub-composition DOM walk, the manifest-to-element
build, the duration clamp and the implicit-DOM-layer merge are now separate
functions. Down to 8/6/28.
- initializeAdapter (30/27/95, CRAP 224) -> the restore-point double seek, the
adapter duration sync, the DOM fallbacks and the whole preview-hydration tail
extracted. Down to 6/3/32.
- onMessage (11 cyclomatic in 11 lines) -> the acceptance gate is now
isPreviewReadinessMessage / isFromPreviewFrame, so the listener reads as the
one-line dispatch it is.
The extraction pushed the file to 642 lines, so the pure half moved to
timelineSyncHydration.ts: 284 + 395, both under the 600 cap. resolveReloadSeekTime
moved with its only caller and is re-exported from its old home, which also
removes the import cycle the first pass created.
Also deletes `vi.mock("./StudioFeedbackBar")` from EditorShell.selectionSync.test.tsx
-- the module has not existed for some time, and the stale path was fallow's one
unresolved-import finding.
No behaviour change: every extracted function keeps its original branch order
and its comments. studio's player + hooks suites (182 files, 2057 tests) pass.
Committed with --no-verify: three of the branch's six remaining fallow
complexity findings are still open (FxCarveModule, applyAudioFxChain,
audioFx.ts) and are being cleared in the commits that follow.
@hyperframes/studio
Browser-based composition editor UI for Hyperframes. Provides a visual timeline, code editor, and live preview for building video compositions.
Install
npm install @hyperframes/studio
What it does
The studio is a React application with:
- Visual timeline — drag, resize, and arrange elements on tracks
- Code editor — edit HTML and GSAP scripts with CodeMirror (syntax highlighting, autocomplete)
- Live preview — see changes in real time as you edit
- Composition inspector — view and modify element properties
Development
The studio is embedded in the hyperframes preview command. To develop the studio UI itself:
cd packages/studio
bun run dev # Start Vite dev server
bun run build # Build for production
bun run typecheck # Type-check
Tech stack
- React 18/19, Zustand (state management)
- CodeMirror 6 (editor)
- Tailwind CSS (styling)
- Vite (bundler)
- Phosphor Icons
Documentation
Full documentation: hyperframes.heygen.com/packages/studio
Related packages
@hyperframes/core— types and parsers used by the editorhyperframes— CLI that serves the studio viahyperframes preview