Testing JavaScript: Practical Guide to Confident Code (2026) Testing isn't about catching bugs — it's about having the confidence to change code without fear. Here's how to write tests that actually matter. The Testing Pyramid ╱╲ ╱ E2E╲ ← Few, slow, expensive ...
Source: [Dev.to](https://dev.to/armorbreak/testing-javascript-practical-guide-to-confident-code-2026-1487)