full-stack-api-integration

Map the entire API integration surface before writing code to prevent missed consumers and drift. Replacing mock data with real API calls requires typed endpoint definitions, a unified API client, and per-domain service layers to ensure end-to-end consistency across all affected files.

An API integration surface map identifies all consumers of mock data or existing endpoints across a frontend. You need one when migrating from mock-driven flows, adding new APIs, or replacing an API during a redesign to prevent partial implementations and broken pages.

Structure a frontend service layer by creating per-domain services backed by a unified API client and typed endpoint definitions. This modular API layer creation ensures scalable maintenance and systematic replacement of placeholders with real API calls.

The best way to migrate endpoints during a redesign is mapping the complete integration surface first, then defining typed endpoints and a unified API client. Systematic replacement of old API calls with per-domain services and end-to-end integration tests prevents regressions.

Test API integration consistency by running end-to-end integration tests after replacing mocks with real API calls. These tests verify typed endpoint definitions and per-domain service layers to prevent broken pages or regressions across the frontend codebase.

Partial API implementations happen when developers write code without a complete surface map, missing consumers across the frontend. Prevent them by mapping the entire API integration surface before coding, establishing typed endpoint definitions, unified API clients, and end-to-end integration tests.