Function fileHistoryHasAnyChanges

src/utils/fileHistory.ts:496–533

(
  state: FileHistoryState,
  messageId: UUID,
)

 * callers that display insertions/deletions.
 */
export async function fileHistoryHasAnyChanges(
  state: FileHistoryState,
  messageId: UUID,
): Promise<boolean> {
  if (!fileHistoryEnabled()) {
    return false
  }

  const targetSnapshot = state.snapshots.findLast(
    snapshot => snapshot.messageId === messageId,
  )
  if (!targetSnapshot) {
    return false
  }

  for (const trackingPath of state.trackedFiles) {
    try {
      const filePath = maybeExpandFilePath(trackingPath)
      const targetBackup = targetSnapshot.trackedFileBackups[trackingPath]
      const backupFileName: BackupFileName | undefined = targetBackup
        ? targetBackup.backupFileName
        : getBackupFileNameFirstVersion(trackingPath, state)

      if (backupFileName === undefined) {
        continue
      }
      if (backupFileName === null) {
        // Backup says file did not exist; probe via stat (operate-then-catch).
        if (await pathExists(filePath)) return true
        continue
      }
      if (await checkOriginFileChanged(filePath, backupFileName)) return true
    } catch (error) {
      logError(error)
    }
  }
  return false
}

/**
 * Applies the given file snapshot state to the tracked files (writes/deletes