Function getTranscriptPathForSession

src/utils/sessionStorage.ts:208–226

(sessionId: string)

}

export function getTranscriptPathForSession(sessionId: string): string {
  // When asking for the CURRENT session's transcript, honor sessionProjectDir
  // the same way getTranscriptPath() does. Without this, hooks get a
  // transcript_path computed from originalCwd while the actual file was
  // written to sessionProjectDir (set by switchActiveSession on resume/branch)
  // — different directories, so the hook sees MISSING (gh-30217). CC-34
  // made sessionId + sessionProjectDir atomic precisely to prevent this
  // kind of drift; this function just wasn't updated to read both.
  //
  // For OTHER session IDs we can only guess via originalCwd — we don't
  // track a sessionId→projectDir map. Callers wanting a specific other
  // session's path should pass fullPath explicitly (most save* functions
  // already accept this).
  if (sessionId === getSessionId()) {
    return getTranscriptPath()
  }
  const projectDir = getProjectDir(getOriginalCwd())
  return join(projectDir, `${sessionId}.jsonl`)
}

// 50 MB — session JSONL can grow to multiple GB (inc-3930). Callers that
// read the raw transcript must bail out above this threshold to avoid OOM.