Heres how I add React native Storybook to an expo router project in 2 minutes
npm create storybook
choose recommended and then native
npx expo@latest customize metro.config.js
copy the metro config
const withStorybook = require("@storybook/react-native/metro/withStorybook");
module.exports = withStorybook(config);
add storybook screen to app
create app/storybook.tsx
export { default } from "../.rnstorybook";