While tools like Jest, Jasmine, Karma, and Testing Library were always there when we needed them for testing our web apps, it's time to move on. In this talk, we'll revisit the battle scars they left behind, and explore how Vitest isn't just trendier — it's the result of hard-earned lessons in speed, reliability, and developer experience.
You'll leave with:
- A sense of closure for the old stack.
- A tour of the modern features Vitest brings to the table.
- Clarity on "Partial" vs. "Full" Browser Mode.
- The anatomy of a maintainable test: Fakes, Object Mothers, and patterns that future-proof your specs.
- A look at Testronaut — a testing companion that takes these patterns further.
Come for the nostalgia. Stay for the clarity. Leave ready to cook.
This talk has been presented at React Summit 2026, check out the latest edition of this React Conference.





















