React native storybook alpha v6 Expo setup

setup_expo_rn_sb.sh

#!/bin/bash
set -e
APP_NAME=${1:-RNStorybookAlpha}
echo "APP_NAME: $APP_NAME"
npm install --global expo-cli
expo init -t expo-template-blank-typescript $APP_NAME

cd $APP_NAME
expo install @storybook/react-native@next \
    @storybook/addon-ondevice-actions@next \
    @storybook/addon-ondevice-controls@next \
    @storybook/addon-ondevice-backgrounds@next \
    @storybook/addon-ondevice-notes@next \
    @storybook/addon-actions@6.3 \
    @storybook/addon-controls@6.3 \
    @react-native-async-storage/async-storage \
    @react-native-community/datetimepicker \
    @react-native-community/slider

echo "const { getDefaultConfig } = require('expo/metro-config');

const defaultConfig = getDefaultConfig(__dirname);

defaultConfig.resolver.resolverMainFields = [
  'sbmodern',
  ...defaultConfig.resolver.resolverMainFields,
];
defaultConfig.transformer.getTransformOptions = async () => ({
  transform: {
    experimentalImportSupport: false,
    inlineRequires: false,
  },
});
defaultConfig.watchFolders = [...defaultConfig.watchFolders, './.storybook'];
module.exports = defaultConfig;
" > metro.config.js;

mkdir .storybook
mkdir components
echo "module.exports = {
  stories: [
    '../components/**/*.stories.?(ts|tsx|js|jsx)'
  ],
   addons: [
    '@storybook/addon-ondevice-notes',
    '@storybook/addon-ondevice-controls',
    '@storybook/addon-ondevice-backgrounds',
    '@storybook/addon-ondevice-actions',
  ],
};" > .storybook/main.js

echo "import {withBackgrounds} from '@storybook/addon-ondevice-backgrounds';

export const decorators = [withBackgrounds];
export const parameters = {
  backgrounds: [
    {name: 'plain', value: 'white', default: true},
    {name: 'warm', value: 'hotpink'},
    {name: 'cool', value: 'deepskyblue'},
  ],
};" > .storybook/preview.js

echo "import { getStorybookUI } from '@storybook/react-native';

import './storybook.requires';

const StorybookUIRoot = getStorybookUI({});

export default StorybookUIRoot;" > .storybook/Storybook.tsx

echo "import StorybookUIRoot from './.storybook/Storybook';
export { StorybookUIRoot as default };" > App.tsx

node -e 'const fs = require("fs");
const packageJSON = require("./package.json");
packageJSON.scripts = {
    ...packageJSON.scripts,
    prestart: "sb-rn-get-stories",
    "storybook-watcher": "sb-rn-watcher"
};
fs.writeFile("./package.json", JSON.stringify(packageJSON, null, 2), function writeJSON(err) {
  if (err) return console.log(err);
  console.log(JSON.stringify(packageJSON));
  console.log("writing to " + "./package.json");
});';

mkdir components/Button;
echo "import React from 'react';
import {TouchableOpacity, Text, StyleSheet} from 'react-native';

interface MyButtonProps {
  onPress: () => void;
  text: string;
}

export const MyButton = ({onPress, text}: MyButtonProps) => {
  return (
    <TouchableOpacity style={styles.container} onPress={onPress}>
      <Text style={styles.text}>{text}</Text>
    </TouchableOpacity>
  );
};

const styles = StyleSheet.create({
  container: {
    paddingHorizontal: 16,
    paddingVertical: 8,
    backgroundColor: 'violet',
  },
  text: {color: 'black'},
});
" > components/Button/Button.tsx;

echo "import React from 'react';
import {ComponentStory, ComponentMeta} from '@storybook/react-native';
import {MyButton} from './Button';

const MyButtonMeta: ComponentMeta<typeof MyButton> = {
  title: 'MyButton',
  component: MyButton,
  argTypes: {
    onPress: {action: 'pressed the button'},
  },
  args: {
    text: 'Hello world',
  },
};

export default MyButtonMeta;

type MyButtonStory = ComponentStory<typeof MyButton>;

export const Basic: MyButtonStory = args => <MyButton {...args} />;

" > components/Button/Button.stories.tsx

yarn sb-rn-get-stories

Need to change default CLI option for background addon as

echo "import {withBackgrounds} from '@storybook/addon-ondevice-backgrounds';
export const decorators = [withBackgrounds];
export const parameters = {
  backgrounds: {
    default: 'plain',
    values: [
      { name: 'plain', value: 'white' },
      { name: 'warm', value: 'hotpink' },
      { name: 'cool', value: 'deepskyblue' },
    ],
  },
};" > .storybook/preview.js

storybookjs/react-native#413