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Ariakit has hundreds of component tests duplicated across happy-dom and Playwright. happy-dom is 6× faster, so humans and agents use it for quick feedback during dev. Playwright is authoritative and runs once when each task is complete. This setup has sped up development. Highly recommend it.

Haz

@haz.dev

Worth noting that we use @⁠ariakit⁠/⁠test, which provides user event methods and works around many happy-dom quirks. We can reliably reproduce browser behavior in most cases.

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7/8/26, 4:51 pm0 reposts1 like

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