Mocking APIs for frontend development: MSW vs Prism vs spec-driven mocks

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Frontend teams have three mocking jobs that blur together until a release goes wrong: developing against an API that does not exist yet, component and integration tests that must not hit the network, and full-journey verification against a running service. Each job has a tool that fits it, and most pain comes from using one tool for all three. This compares MSW (Mock Service Worker), Stoplight Prism, and spec-driven mocks from an OpenAPI workspace, then shows the combination that avoids fixture sprawl. MSW intercepts requests at the network layer using a Service Worker in the browser and a req

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