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Vance Ingalls
c096ff3afa
## What Kills two false-positive classes in the SDK shadow GSAP value-fidelity diff (`sdkShadowGsapFidelity.ts`). 1. **Float precision** — `numericEqual` compared exactly, so SDK-computed `3.0999999999999996` vs server `3.1` flagged as drift. Now a relative epsilon (`abs(a-b) <= 1e-6 * max(1,|a|,|b|)`); real `2` vs `1` still flags. 2. **Selector-form divergence** — `[data-hf-id="X"]` (SDK writer) vs `.class`/`#id` (server writer) for the same element produced phantom `present`/`absent` pairs. `makeSelectorResolver` now keys tweens by resolved element (incl. nodes with no `data-hf-id`), unifying the forms. ## Why Surfaced by production SDK-shadow parity telemetry — `gsap_fidelity` was the noisiest real-traffic op; both are diff-harness artifacts, not SDK drift. ## Tests Epsilon (clean + real-drift) + selector-unification for `#id`/`.class`/`[data-hf-id]`. 🤖 Generated with [Claude Code](https://claude.com/claude-code)
@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