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* feat(studio): add clipboard payload types and ID deduplication * feat(studio): add Ctrl+C/V/X copy/paste for timeline clips and DOM elements * fix(studio): use duck-typing for cross-frame element access in clipboard Elements from the preview iframe are from a different window context, so `el instanceof HTMLElement` always returns false. Use `"outerHTML" in el` instead to correctly detect elements across frame boundaries. * fix(studio): preserve playhead position after paste reloadPreview() used location.reload() which bypassed the NLELayout saveSeekPosition effect, causing the playhead to reset to 0:00 after paste. Switch to setRefreshKey which triggers the effect and restores the seek position after the iframe reloads. * fix(studio): paste DOM elements as siblings, not at composition root DOM element paste was inserting at the composition root, losing the parent context that provides CSS styles and positioning. Now stores the origin selector on copy and inserts the paste as a sibling immediately after the original element, preserving style inheritance. Falls back to root insertion if the selector can't be matched. * fix(studio): address review — deduplicateIds, native copy, altKey guard - deduplicateIds regex used \b which matched data-composition-id, data-clip-id, etc. Switch to lookbehind (?<=\s) so only standalone id="..." attributes are rewritten. Add test pinning this. - Ctrl+C no longer calls preventDefault() before confirming there's a selected element. Native browser copy (text selections outside inputs) is preserved when nothing is selected in the Studio. - Add !event.altKey guard on C/V/X to avoid intercepting Cmd+Alt+V (paste-as-plain-text) and similar OS gestures. - Remove no-op .replace(/"/g, '"') flagged by CodeQL. * fix(studio): address review round 2 — Cmd+X guard, data-start scope, revert drive-by - Cmd+X now pre-checks selection state before preventDefault, mirroring the Cmd+C fix. Native cut preserved when nothing is selected. - handleCut returns Promise<boolean> so the caller can gate on it. - data-start rewrite scoped to the outermost opening tag only, so nested clip timing is preserved on paste. - Removed system clipboard write (cross-tab paste unsupported, in-memory ref is the only read path). - Reverted the reloadPreview drive-by (setRefreshKey→location.reload); the perf branch (#895) handles this properly via refreshPlayer().
@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