Micro-Frontends

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Testing

E2E Testing Micro-Frontend Composition with Playwright

End-to-end tests for micro-frontends are harder to set up than for monolithic apps, but they're not optional. Unit tests and contract tests verify pieces in isolation. E2E tests verify that everything works together when a real user navigates through the composed application — crossing remote boundaries,

Testing

Cross-Team Contract Testing for Micro-Frontends

Micro-frontend teams ship independently. That's the whole point. But independent shipping only works if every team respects the interfaces their code exposes and consumes. Without enforcement, breaking changes slip through: a prop gets renamed, an event payload changes shape, a shared utility gets a new required parameter.