Function writeBackupBytes

packages/storage/src/memory-bundle-io.ts:846–870

(
  directory: DirectoryBinding,
  kind: MemoryBackupKind,
  bytes: Uint8Array,
)

}

async function writeBackupBytes(
  directory: DirectoryBinding,
  kind: MemoryBackupKind,
  bytes: Uint8Array,
): Promise<void> {
  const destination = backupPath(directory.path, kind);
  await assertRegularOrMissing(destination, BACKUP_FILES[kind]);
  const temporaryPath = `${destination}.${randomUUID()}.tmp`;
  let handle: Awaited<ReturnType<typeof open>> | undefined;
  try {
    handle = await open(temporaryPath, 'wx', 0o600);
    await handle.writeFile(bytes);
    await handle.sync();
    await handle.close();
    handle = undefined;
    await assertDirectoryBinding(directory);
    await rename(temporaryPath, destination);
    await chmod(destination, 0o600);
    await syncDirectory(directory.path);
    await assertDirectoryBinding(directory);
  } finally {
    if (handle) await handle.close();
    await rm(temporaryPath, { force: true });
  }
}

async function rotateRestoreHistory(directory: DirectoryBinding): Promise<void> {
  for (let index = RESTORE_HISTORY_LIMIT - 1; index >= 1; index -= 1) {