INNER CODE UNIT · TypeScript

decodeCursor

harvard-edge/cs249r_book · interviews/staffml-vault-worker/src/index.ts:171

function decodeCursor(s: string | null): Cursor | null {
  if (!s) return null;
  try {
    const parsed = JSON.parse(atob(s)) as unknown;
    if (typeof parsed !== "object" || parsed === null) return null;
    const c = parsed as Partial<Cursor>;
    if (typeof c.after_id !== "string" || typeof c.filter_hash !== "string") return null;
    return { after_id: c.after_id, filter_hash: c.filter_hash };
  } catch {
    return null;
  }
}

// ─── Cloudflare Cache API (B.1) ──────────────────────────────────────────────

/**
 * Build a stable Cache API key keyed by release_id so a deploy atomically
 * invalidates all cached entries (ARCHITECTURE.md §6.1.1 correctness boundary).

View source record →