@storybook/addon-viewport

What is @storybook/addon-viewport?

The @storybook/addon-viewport package allows developers to customize the viewport size to simulate different screen sizes in Storybook's UI. This is particularly useful for ensuring that components and layouts are responsive and look good on various devices, from mobile phones to desktop monitors.

What are @storybook/addon-viewport's main functionalities?

Custom Viewport Configuration

This code configures Storybook to use a set of predefined viewports. The INITIAL_VIEWPORTS constant provides a list of common device resolutions that can be used to test the responsiveness of components.

import { INITIAL_VIEWPORTS } from '@storybook/addon-viewport';

export const parameters = {
  viewport: {
    viewports: INITIAL_VIEWPORTS,
  },
};

Adding New Viewports

Developers can add custom viewports to the Storybook configuration. This code sample demonstrates how to add new devices, such as Kindle Fire 2 and Kindle Fire HD, with specific resolutions to the viewport addon.

export const parameters = {
  viewport: {
    viewports: {
      kindleFire2: {
        name: 'Kindle Fire 2',
        styles: {
          width: '600px',
          height: '963px',
        },
      },
      kindleFireHD: {
        name: 'Kindle Fire HD',
        styles: {
          width: '533px',
          height: '801px',
        },
      },
    },
  },
};

Other packages similar to @storybook/addon-viewport

react-device-detect

This package provides device detection for React applications. It offers hooks and components to conditionally render UI elements based on the device. Unlike @storybook/addon-viewport, it does not integrate with Storybook but can be used within the app's codebase to adapt the UI for different devices.

react-responsive

React-responsive is a package that allows the creation of media queries in React components. It is similar to @storybook/addon-viewport in that it helps in building responsive UIs, but it does so within the context of the app rather than in a Storybook environment.

README

Storybook Viewport Addon

Storybook Viewport Addon allows your stories to be displayed in different sizes and layouts in Storybook. This helps build responsive components inside of Storybook.

Framework Support

Installation

Install the following npm module:

npm i --save-dev @storybook/addon-viewport

or with yarn:

yarn add -D @storybook/addon-viewport

Then, add following content to .storybook/addons.js

import '@storybook/addon-viewport/register';

Configuration

Import and use the configureViewport function in your config.js file.

import { configureViewport } from '@storybook/addon-viewport';

defaultViewport : String

---

Setting this property to, let say iphone6, will make iPhone 6 the default device/viewport for all stories. Default is 'responsive' which fills 100% of the preview area.

viewports : Object

---

A key-value pair of viewport's key and properties (see Viewport definition below) for all viewports to be displayed. Default is INITIAL_VIEWPORTS

Viewport Model

{
  /**
   * name to display in the dropdown
   * @type {String}
   */
  name: 'Responsive',

  /**
   * Inline styles to be applied to the story (iframe).
   * styles is an object whose key is the camelCased version of the style name, and whose
   * value is the style’s value, usually a string
   * @type {Object}
   */
  styles: {
    width: '100%',
    height: '100%',
  },

  /**
   * type of the device (e.g. desktop, mobile, or tablet)
   * @type {String}
   */
  type: 'desktop',
}

Decorators

Sometimes you want to show collection of mobile stories, and you know those stories look horible on desktop (responsive), so you think you need to change the default viewport only for those?

Here is the answer, with withViewport decorator, you can change the default viewport of single, multiple, or all stories.

withViewport accepts either

• A String, which represents the default viewport, or
• An Object, which looks like

{
  name: 'iphone6', // default viewport
  onViewportChange({ viewport }) { // called whenever different viewport is selected from the dropdown

  }
}

Examples

Basic Usage

Simply import the Storybook Viewport Addon in the addons.js file in your .storybook directory.

import '@storybook/addon-viewport/register'

This will register the Viewport Addon to Storybook and will show up in the action area.

Use Custom Set of Devices

This will replace all previous devices with Kindle Fire 2 and Kindle Fire HD by simply calling configureViewport with the two devices as viewports in config.js file in your .storybook directory.

import { configureViewport } from '@storybook/addon-viewport';

const newViewports = {
  kindleFire2: {
    name: 'Kindle Fire 2',
    styles: {
      width: '600px',
      height: '963px'
    }
  },
  kindleFireHD: {
    name: 'Kindle Fire HD',
    styles: {
      width: '533px',
      height: '801px'
    }
  }
};

configureViewport({
  viewports: newViewports
});

Add New Device

This will add both Kindle Fire 2 and Kindle Fire HD to the list of devices. This is acheived by making use of the exported INITIAL_VIEWPORTS property, by merging it with the new viewports and pass the result as viewports to configureViewport function

import { configureViewport, INITIAL_VIEWPORTS } from '@storybook/addon-viewport';

const newViewports = {
  kindleFire2: {
    name: 'Kindle Fire 2',
    styles: {
      width: '600px',
      height: '963px'
    }
  },
  kindleFireHD: {
    name: 'Kindle Fire HD',
    styles: {
      width: '533px',
      height: '801px'
    }
  }
};

configureViewport({
  viewports: {
    ...INITIAL_VIEWPORTS,
    ...newViewports
  }
});

Change The Default Viewport

This will make iPhone 6 the default viewport for all stories.

import { configureViewport } from '@storybook/addon-viewport';

configureViewport({
  defaultViewport: 'iphone6'
});

withViewport Decorator

Change the default viewport for single/multiple/global stories, or listen to viewport selection changes

import React from 'react';
import { storiesOf, addDecorator } from '@storybook/react';
import { withViewport } from '@storybook/addon-viewport';

// Globablly
addDecorator(withViewport('iphone5'));

// Collection
storiesOf('Decorator with string', module)
  .addDecorator(withViewport('iphone6'))
  .add('iPhone 6', () => (
    <h1>
      Do I look good on <b>iPhone 6</b>?
    </h1>
  ));

// Single
storiesOf('Parameterized story', module)
  .addDecorator(withViewport())
  .add(
    'iPad',
    () => (
      <h1>
        Do I look good on <b>iPad</b>?
      </h1>
    ),
    { viewport: 'ipad' }
  );

storiesOf('Decorator with object', module)
  .addDecorator(
    withViewport({
      onViewportChange({ viewport }) {
        console.log(`Viewport changed: ${viewport.name} (${viewport.type})`); // e.g. Viewport changed: iphone6 (mobile)
      },
    })
  )
  .add('onViewportChange', () => <MobileFirstComponent />);