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

# dev

Options for local development.

## dev.writeToDisk [![dev.writeToDisk](https://assets.rspack.rs/rsbuild/rsbuild-logo.svg)dev.writeToDisk](https://rsbuild.rs/config/dev/write-to-disk)
- **CLI:** `--dev.writeToDisk`

By default, Rstest does not write test temporary files to disk, and this configuration item may be required when you debug rstest outputs.

```ts title="rstest.config.ts"
export default {
  dev: {
    writeToDisk: true,
  },
};
```