storybook/docs/snippets/vue/storybook-testing-addon-optional-config.vite.ts.mdx

```ts
// vitest.config.ts

/// <reference types="vitest" />
import { defineConfig } from 'vitest/config';
import { mergeConfig } from 'vite';

import viteConfig from './vite.config';

export default mergeConfig(
  viteConfig,
  defineConfig({
    test: {
      globals: true,
      environment: 'jsdom',
      clearMocks: true,
      setupFiles: './src/setupTests.ts', //👈 Our configuration file enabled here
    },
  }),
);
```