storybook/examples/web-components-kitchen-sink/.storybook/main.js

module.exports = {
  logLevel: 'debug',
  addons: [
    '@storybook/addon-docs',
    '@storybook/addon-controls',
    '@storybook/addon-a11y',
    '@storybook/addon-actions',
    '@storybook/addon-backgrounds',
    '@storybook/addon-knobs',
    '@storybook/addon-links',
    '@storybook/addon-storysource',
    '@storybook/addon-viewport',
  ],
};