Mock Service Worker

Treat MSW as the network boundary, not as the owner of the test runner, UI waiting strategy, or client cache.

Workflow

1. Detect the installed contract

Inspect manifests, lockfiles, package-manager output, imports, and node_modules/msw/package.json when available. Record the exact MSW version, its engines and peer requirements, module system, test runner, and whether interception runs in Node, a browser, or both.

Do not infer syntax from "MSW" alone. Classify the installed major before editing: