API Mocking with MSW

Quick Guide: Handlers with variant switching (default, empty, error). Shared between browser (dev) and Node (tests). Separate mock data from handlers for reusability. Type-safe using your API's generated types. Use setupWorker (browser) and setupServer (Node) -- never swap them.

Detailed Resources:

• examples/core.md - Mock data, variant handlers, server worker, per-test overrides, runtime switching, network simulation
• examples/browser.md - Browser worker setup, SPA/SSR integration
• reference.md - Decision frameworks, red flags, anti-patterns

<critical_requirements>

CRITICAL: Before Using This Skill

(You MUST separate mock data from handlers - handlers in handlers/, data in mocks/)

(You MUST use setupWorker for browser/development and setupServer for Node/tests - NEVER swap them)