storybook/docs/snippets/web-components/component-story-custom-args-mapping.ts.mdx

```ts
// Button.stories.ts

import type { Meta } from '@storybook/web-components';

import { ArrowUp, ArrowDown, ArrowLeft, ArrowRight } from './icons';

const arrows = { ArrowUp, ArrowDown, ArrowLeft, ArrowRight };

const meta: Meta = {
  component: 'demo-button',
  argTypes: {
    arrow: {
      options: Object.keys(arrows), // An array of serializable values
      mapping: arrows, // Maps serializable option values to complex arg values
      control: {
        type: 'select', // Type 'select' is automatically inferred when 'options' is defined
        labels: {
          // 'labels' maps option values to string labels
          ArrowUp: 'Up',
          ArrowDown: 'Down',
          ArrowLeft: 'Left',
          ArrowRight: 'Right',
        },
      },
    },
  },
};

export default meta;
```