Welcome to the latest iteration of Storybook, the world’s favorite UI component workshop.

Storybook improves component development, testing, and documentation for React/React Native/Vue/Angular and more. It’s used by engineering powerhouses like Airbnb, Slack, Squarespace, and Lyft.

Storybook 4.0 (SB4) supports six new view layers and introduces improvements at every level:

🖼 View layers: Ember, MarkoJS, Mithril, HTML, Svelte, Riot

Ember, MarkoJS, Mithril, HTML, Svelte, Riot 🛠 Build: Webpack 4, Babel 7

Webpack 4, Babel 7 📱 Mobile: React Native, Mobile device view

React Native, Mobile device view 🎨 UI: Theming

Theming ⚙️ Core: Story parameters

Our goal is to help every developer build bulletproof UI components. Regardless of framework or stack. Today we’re one step closer to that goal.

Read on for all the ways that SB4 will supercharge your component development experience.