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Learn how Mock Service Worker (MSW) lets you mock APIs at the network level for testing and development—no backend required. Includes practical examples and real-world patterns.

Practical Playwright testing strategies I learned the hard way — from authentication flows to CI/CD integration, with real code examples that actually work in production.

Learn how to write robust, maintainable tests with Vitest. From setup to advanced patterns, discover why this modern testing framework is changing how we approach JavaScript testing in 2026.