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Vance Ingalls
fdf0cf3125
Two loose ends from the rebase.
**The routing had no test.** e1271b225 pointed the media-element transport at
`resolveDestination` -- the primary audio path finally reaching the bus this
branch adds -- and nothing failed if it went back to `this._masterGain`. Two
cases now: a grouped clip's media-element playback lands on the group input and
never on master, an ungrouped one goes straight to master. Verified they FAIL on
a revert of that one line. The group mock needed `createMediaElementSource`; its
absence made `scheduleMediaElementPlayback` throw into its own catch and read as
"the member did not play" rather than as a missing stub -- the same trap the
mock's existing comment warns about for the AudioParam surface.
**Five studio files were over the 600-line cap.** All five were pushed over BY
this branch (main had them at 597, 572, 541, and under), so any future commit
touching one needed --no-verify -- the thing this stack set out to end:
- TimelineLanes.tsx 610 -> 596, keyframe-lane disclosure + its telemetry now
useTimelineClipDisclosure
- useDomEditSession.ts 615 -> 596, membersForDelete and RecordEditInput to
domEditDeleteMembers.ts (re-exported, its test imports from the old home)
- useTimelineEditing.ts 614 -> 600, the rate-limited blocked-edit toast to its
own hook, TimelineMoveUpdates to the types module
- PropertyPanelFlat.tsx 605 -> 597, the collapsed-group header row to its own
module
- playerStore.ts 604 -> 594, the dev-build console handle to its own module
Extracting in place made PropertyPanelFlat GROW (605 -> 616): a signature plus a
doc comment costs more than an inline arrow saves. Only a move to a sibling
module actually removes lines.
Every non-test studio file in the diff is now under the cap, fallow exits 0, and
studio's whole suite passes (389 files, 4,384 tests).
@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