Function ensureMemoryDirExists

src/memdir/memdir.ts:128–146

(memoryDir: string)

 * try/catch needed for the happy path.
 */
export async function ensureMemoryDirExists(memoryDir: string): Promise<void> {
  const fs = getFsImplementation()
  try {
    await fs.mkdir(memoryDir)
  } catch (e) {
    // fs.mkdir already handles EEXIST internally. Anything reaching here is
    // a real problem (EACCES/EPERM/EROFS) — log so --debug shows why. Prompt
    // building continues either way; the model's Write will surface the
    // real perm error (and FileWriteTool does its own mkdir of the parent).
    const code =
      e instanceof Error && 'code' in e && typeof e.code === 'string'
        ? e.code
        : undefined
    logForDebugging(
      `ensureMemoryDirExists failed for ${memoryDir}: ${code ?? String(e)}`,
      { level: 'debug' },
    )
  }
}

/**
 * Log memory directory file/subdir counts asynchronously.