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https://github.com/heygen-com/hyperframes.git
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Miguel Angel Simon Sierra
adc6ebf6ce
The audit gate was already red on this branch before the selection-box commit landed, with four findings, all of them in the feature's own files: `restyle`, `runNodes`, `offsetOf` and the test's `rangeOver`. Split into named steps rather than suppressed. Two things worth saying about the split, because both are places it could have gone quietly wrong. `restyle` still walks UTF-16 units rather than code points: spreading the string would count a surrogate pair once and slide every index after an emoji. And `offsetOf` counts two different things depending on how the position was given, a place inside a text node or an index among the host's children, where a child element contributes everything inside it. Collapsing those two into one helper made bold stop toggling off, which the suite caught.
@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