> For AI agents: the complete documentation index is available at /llms.txt, the full documentation bundle is available at /llms-full.txt.

# setupFiles

- **Type:** `string[]`
- **Default:** `[]`

A list of paths to modules that run some code to configure or set up the testing environment, they will be run before each test file.

```ts title="rstest.config.ts"
import { defineConfig } from '@rstest/core';

export default defineConfig({
  setupFiles: ['./scripts/rstest.setup.ts'],
});
```