config.js

// File: .storybook/config.js

import { configure, addDecorator } from '@kadira/storybook';
import Theme from './../src/ui/theme';
import React from 'react';
import { ThemeProvider } from 'styled-components'

function loadStories() {
  require('../stories');
}

addDecorator((story) => (
  <ThemeProvider theme={Theme}>
    {story()}
  </ThemeProvider>
))

configure(loadStories, module);