Storybook: Define args for all stories

// Button.stories.ts|tsx

import React from 'react';

import { ComponentMeta } from '@storybook/react';

import { Button } from './Button';

export default {
  /*  The title prop is optional.
  * See https://storybook.js.org/docs/react/configure/overview#configure-story-loading
  * to learn how to generate automatic titles
  */
  title: 'Button',
  component: Button,
  // Creates specific argTypes
  argTypes: {
    backgroundColor: { control: 'color' },
  },
  args: {
    // Now all Button stories will be primary.
    primary: true,
  },
} as ComponentMeta<typeof Button>;