Function writeFileAtomic

apps/desktop/src/main/vault.ts:646–670

(absPath: string, data: string)

 * user's data and are just clutter.
 */
export async function writeFileAtomic(absPath: string, data: string): Promise<void> {
  const tmp = `${absPath}.${process.pid}.${Date.now()}.tmp`
  await fs.mkdir(path.dirname(absPath), { recursive: true })
  const handle = await fs.open(tmp, 'w')
  try {
    await handle.writeFile(data, 'utf8')
    try {
      await handle.sync()
    } catch (syncErr) {
      console.warn('fsync failed for atomic write', syncErr)
    }
  } finally {
    await handle.close()
  }
  try {
    await fs.rename(tmp, absPath)
  } catch (err) {
    try {
      await fs.unlink(tmp)
    } catch {
      /* ignore */
    }
    throw err
  }
}

export async function updateConfig(
  updater: (cfg: PersistedConfig) => PersistedConfig | Promise<PersistedConfig>