v7.0.0-alpha.6

change .storybook/index to be

import { view } from './storybook.requires';

const StorybookUIRoot = view.getStorybookUI({});

export default () => <StorybookUIRoot />;

this metro config is also required now

transformer: {
  unstable_allowRequireContext: true,
},

also install 7.6.0-alpha.2 for other storybook packages like @storybook/addon-controls