storybook/docs/snippets/react/app-story-with-mock.ts.mdx

```ts
// App.stories.ts|tsx

import React from 'react';

import type { ComponentStoryObj, ComponentMeta } from '@storybook/react';

import App from './App';

export default {
  /* 👇 The title prop is optional.
   * See https://storybook.js.org/docs/7.0/react/configure/overview#configure-story-loading
   * to learn how to generate automatic titles
   */
  title: 'App',
  component: App,
} as ComponentMeta<typeof App>;

export const Success: ComponentStoryObj<typeof App> = {
  parameters: {
    fetch: {
      json: {
        JavaScript: 3390991,
        'C++': 44974,
        TypeScript: 15530,
        CoffeeScript: 12253,
        Python: 9383,
        C: 5341,
        Shell: 5115,
        HTML: 3420,
        CSS: 3171,
        Makefile: 189,
      },
    },
  },
};
```