Klaviyo SDK Patterns Overview Production-ready patterns for the Node.js SDK: singleton sessions, type-safe wrappers, retry logic, pagination, and multi-tenant support. Prerequisites - package installed - Completed setup - TypeScript project with strict mode Instructions Step 1: Singleton Session Pattern Step 2: Type-Safe API Wrapper Step 3: Error Handling Wrapper Step 4: Retry with Retry-After Header Step 5: Cursor-Based Pagination Step 6: Multi-Tenant Factory SDK Conventions | Convention | Example | |-----------|---------| | Property casing | (not ) | | Response access | (not ) | | Payload s…