a11y

storybook-addon-a11y

This storybook addon can be helpful to make your UI components more accessible.

Framework Support

Getting started

First, install the addon.

$ npm install -D @storybook/addon-a11y

Add this line to your addons.js file (create this file inside your storybook config directory if needed).

import '@storybook/addon-a11y/register';

import the 'checkA11y' decorator to check your stories for violations within your components.

import React from 'react';
import { storiesOf } from '@storybook/react';

import { checkA11y } from '@storybook/addon-a11y';

storiesOf('button', module)
  .addDecorator(checkA11y)
  .add('Accessible', () => (
    <button>
      Accessible button
    </button>
  ))
  .add('Inaccessible', () => (
    <button style={{ backgroundColor: 'red', color: 'darkRed', }}>
      Inaccessible button
    </button>
  ));

For more customizability. Use the 'configureA11y' function to configure aXe options.

import React from 'react';
import { storiesOf } from '@storybook/react';

import { checkA11y, configureA11y } from '@storybook/addon-a11y';

const whateverOptionsYouWant = {};
configureA11y(whateverOptionsYouWant);

storiesOf('button', module)
  .addDecorator(checkA11y)
  .add('Accessible', () => (
    <button>
      Accessible button
    </button>
  ))
  .add('Inaccessible', () => (
    <button style={{ backgroundColor: 'red', color: 'darkRed', }}>
      Inaccessible button
    </button>
  ));

If you want to add a11y globally to your stories, you can use the global Storybook decorator in your .storybook/config.js file:

import { configure, addDecorator } from '@storybook/react';
import { checkA11y } from '@storybook/addon-a11y';

// pick all stories.js files within the src/ folder
const req = require.context('../src', true, /stories\.js$/);

addDecorator(checkA11y);

function loadStories() {
  req.keys().forEach(filename => req(filename));
}

configure(loadStories, module);

Roadmap

• Make UI accessibile
• Add color blindness filters (Example)
• Show in story where violations are.
• Make it configurable
• Add more example tests
• Add tests
• Make CI integration possible