Function getSessionFilesWithMtime

src/utils/sessionStorage.ts:4527–4570

(
  projectDir: string,
)

 * Stats are batched via Promise.all to avoid serial syscalls in the hot loop.
 */
export async function getSessionFilesWithMtime(
  projectDir: string,
): Promise<
  Map<string, { path: string; mtime: number; ctime: number; size: number }>
> {
  const sessionFilesMap = new Map<
    string,
    { path: string; mtime: number; ctime: number; size: number }
  >()

  let dirents: Dirent[]
  try {
    dirents = await readdir(projectDir, { withFileTypes: true })
  } catch {
    // Directory doesn't exist - return empty map
    return sessionFilesMap
  }

  const candidates: Array<{ sessionId: string; filePath: string }> = []
  for (const dirent of dirents) {
    if (!dirent.isFile() || !dirent.name.endsWith('.jsonl')) continue
    const sessionId = validateUuid(basename(dirent.name, '.jsonl'))
    if (!sessionId) continue
    candidates.push({ sessionId, filePath: join(projectDir, dirent.name) })
  }

  await Promise.all(
    candidates.map(async ({ sessionId, filePath }) => {
      try {
        const st = await stat(filePath)
        sessionFilesMap.set(sessionId, {
          path: filePath,
          mtime: st.mtime.getTime(),
          ctime: st.birthtime.getTime(),
          size: st.size,
        })
      } catch {
        logForDebugging(`Failed to stat session file: ${filePath}`)
      }
    }),
  )

  return sessionFilesMap
}

/**
 * Number of sessions to enrich on the initial load of the resume picker.