Navan SDK Patterns Overview Build a typed API wrapper around Navan REST endpoints since no official SDK exists ( is not a real package). These patterns provide automatic token lifecycle management, typed responses, retry middleware, and centralized error handling. Purpose: Create a reusable NavanAPI class encapsulating authentication, request handling, and error recovery. Prerequisites - Completed with working OAuth 2.0 credentials - TypeScript 5+ project with installed - Familiarity with the Navan endpoints from Instructions Step 1: Define Response Interfaces Type the known API response shap…