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@storybook/addon-ondevice-backgrounds
A react-native storybook addon to show different backgrounds for your preview
npm install @storybook/addon-ondevice-backgrounds
Last updated 5 days ago
44.4k
Downloads per week
Made by Storybook
Readme View on GitHub

Storybook for React Native

With Storybook for React Native you can design and develop individual React Native components without running your app.

This readme is for the 7.6.10 version, you can find the 6.5 docs here.

If you are migrating from 6.5 to 7.6 you can find the migration guide here

For more information about storybook visit: storybook.js.org

NOTE: @storybook/react-native requires atleast 7.6.10, if you install other storybook core packages they should be ^7.6.10 or newer.

If you want to help out or are just curious then check out the project board to see the open issues.

picture of storybook

Pictured is from the template mentioned in getting started

Table of contents

Getting Started

New project

There is some project boilerplate with @storybook/react-native and @storybook/addons-react-native-web both already configured with a simple example.

For expo you can use this template with the following command

# With NPM
npx create-expo-app --template expo-template-storybook AwesomeStorybook

For react native cli you can use this template

npx react-native init MyApp --template react-native-template-storybook

Existing project

Run init to setup your project with all the dependencies and configuration files:

npx storybook@latest init

The only thing left to do is return Storybook's UI in your app entry point (such as App.tsx) like this:

export { default } from './.storybook';

If you want to be able to swap easily between storybook and your app, have a look at this blog post

If you want to add everything yourself check out the the manual guide here.

Additional steps: Update your metro config

We require the unstable_allowRequireContext transformer option to enable dynamic story imports based on the stories glob in main.ts. We can also call the storybook generate function from the metro config to automatically generate the storybook.requires.ts file when metro runs.

Expo

First create metro config file if you don't have it yet.

npx expo customize metro.config.js

Then set transformer.unstable_allowRequireContext to true and add the generate call here.

// metro.config.js
const path = require('path');
const { getDefaultConfig } = require('expo/metro-config');

const { generate } = require('@storybook/react-native/scripts/generate');

generate({
  configPath: path.resolve(__dirname, './.storybook'),
});

/** @type {import('expo/metro-config').MetroConfig} */
const config = getDefaultConfig(__dirname);

config.transformer.unstable_allowRequireContext = true;

config.resolver.sourceExts.push('mjs');

module.exports = config;

React native

const path = require('path');
const { generate } = require('@storybook/react-native/scripts/generate');

generate({
  configPath: path.resolve(__dirname, './.storybook'),
});

module.exports = {
  /* existing config */
  transformer: {
    unstable_allowRequireContext: true,
  },
  resolver: {
    sourceExts: [...defaultConfig.resolver.sourceExts, 'mjs'],
  },
};

Writing stories

In storybook we use a syntax called CSF that looks like this:

import type { Meta, StoryObj } from '@storybook/react';
import { MyButton } from './Button';

const meta = {
  component: MyButton,
} satisfies Meta<typeof MyButton>;

export default meta;

type Story = StoryObj<typeof meta>;

export const Basic: Story = {
  args: {
    text: 'Hello World',
    color: 'purple',
  },
};

You should configure the path to your story files in the main.ts config file from the .storybook folder.

// .storybook/main.ts
import { StorybookConfig } from '@storybook/react-native';

const main: StorybookConfig = {
  stories: ['../components/**/*.stories.?(ts|tsx|js|jsx)'],
  addons: [],
};

export default main;

Decorators and Parameters

For stories you can add decorators and parameters on the default export or on a specifc story.

import type { Meta } from '@storybook/react';
import { Button } from './Button';

const meta = {
  title: 'Button',
  component: Button,
  decorators: [
    (Story) => (
      <View style={{ alignItems: 'center', justifyContent: 'center', flex: 1 }}>
        <Story />
      </View>
    ),
  ],
  parameters: {
    backgrounds: {
      values: [
        { name: 'red', value: '#f00' },
        { name: 'green', value: '#0f0' },
        { name: 'blue', value: '#00f' },
      ],
    },
  },
} satisfies Meta<typeof Button>;

export default meta;

For global decorators and parameters, you can add them to preview.tsx inside your .storybook folder.

// .storybook/preview.tsx
import type { Preview } from '@storybook/react';
import { withBackgrounds } from '@storybook/addon-ondevice-backgrounds';

const preview: Preview = {
  decorators: [
    withBackgrounds,
    (Story) => (
      <View style={{ flex: 1, color: 'blue' }}>
        <Story />
      </View>
    ),
  ],
  parameters: {
    backgrounds: {
      default: 'plain',
      values: [
        { name: 'plain', value: 'white' },
        { name: 'warm', value: 'hotpink' },
        { name: 'cool', value: 'deepskyblue' },
      ],
    },
  },
};

export default preview;

Addons

The cli will install some basic addons for you such as controls and actions. Ondevice addons are addons that can render with the device ui that you see on the phone.

Currently the addons available are:

Install each one you want to use and add them to the main.ts addons list as follows:

// .storybook/main.ts
import { StorybookConfig } from '@storybook/react-native';

const main: StorybookConfig = {
  // ... rest of config
  addons: [
    '@storybook/addon-ondevice-notes',
    '@storybook/addon-ondevice-controls',
    '@storybook/addon-ondevice-backgrounds',
    '@storybook/addon-ondevice-actions',
  ],
};

export default main;

Using the addons in your story

For details of each ondevice addon you can see the readme:

Hide/Show storybook

Storybook on react native is a normal React Native component that can be used or hidden anywhere in your RN application based on your own logic.

You can also create a separate app just for storybook that also works as a package for your visual components. Some have opted to toggle the storybook component by using a custom option in the react native developer menu.

getStorybookUI options

You can pass these parameters to getStorybookUI call in your storybook entry point:

{
    tabOpen: Number (0)
        -- which tab should be open. -1 Sidebar, 0 Canvas, 1 Addons
    initialSelection: string | Object (undefined)
        -- initialize storybook with a specific story.  eg: `mybutton--largebutton` or `{ kind: 'MyButton', name: 'LargeButton' }`
    shouldDisableKeyboardAvoidingView: Boolean (false)
        -- Disable KeyboardAvoidingView wrapping Storybook's view
    keyboardAvoidingViewVerticalOffset: Number (0)
        -- With shouldDisableKeyboardAvoidingView=true, this will set the keyboardverticaloffset (https://facebook.github.io/react-native/docs/keyboardavoidingview#keyboardverticaloffset) value for KeyboardAvoidingView wrapping Storybook's view
}

Using stories in unit tests

Storybook provides testing utilities that allow you to reuse your stories in external test environments, such as Jest. This way you can write unit tests easier and reuse the setup which is already done in Storybook, but in your unit tests. You can find more information about it in the portable stories section.

Contributing

We welcome contributions to Storybook!

  • 📥 Pull requests and 🌟 Stars are always welcome.
  • Read our contributing guide to get started, or find us on Discord and look for the react-native channel.

Looking for a first issue to tackle?

  • We tag issues with Good First Issue when we think they are well suited for people who are new to the codebase or OSS in general.
  • Talk to us, we'll find something to suits your skills and learning interest.

Examples

Here are some example projects to help you get started

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