Storybook 8.4 launches with component testing, Svelte 5 support, improved tagging, & more

Storybook 8.4 introduces various enhancements for UI component development, including a 1-click component testing and debugging tool with support for Vitest and other test runners. The update also dramatically reduces install size and lockfile additions, supports Svelte 5, improves TypeScript and JSDoc support, and integrates Show more