Function captureOnDiskBefore

packages/studio/src/utils/sdkCutover.ts:66–77

* Capture the undo-history `before` baseline for timing/GSAP persists: the exact * on-disk bytes when a reader is available (so undo restores them verbatim), * falling back to the SDK's pre-edit serialization when it isn't. Never throws — * a failed read degrades to the serialized fallback rather

(
  deps: CutoverDeps,
  targetPath: string,
  serializedFallback: string,
)

 * a failed read degrades to the serialized fallback rather than aborting the edit.
 */
async function captureOnDiskBefore(
  deps: CutoverDeps,
  targetPath: string,
  serializedFallback: string,
): Promise<string> {
  if (!deps.readProjectFile) return serializedFallback;
  try {
    return await deps.readProjectFile(targetPath);
  } catch {
    return serializedFallback;
  }
}

/** True when targetPath isn't the composition the SDK session models. */
function wrongCompositionFile(deps: CutoverDeps, targetPath: string): boolean {