---
title: Biome
sidebar_label: Biome
description: CodeRabbit's guide to Biome.
---

```mdx-code-block
import ProPlanNotice from '@site/src/components/ProPlanNotice.mdx';

<ProPlanNotice />
```

[Biome](https://biomejs.dev/) is a linter for JavaScript, TypeScript, JSX, TSX, JSON, JSONC, CSS.

## Files

Biome will run on files with the following extensions:

- `.js`
- `.ts`
- `.cjs`
- `.mjs`
- `.d.cts`
- `.d.mts`
- `.jsx`
- `.tsx`
- `.json`
- `.jsonc`
- `.css`

## Configuration

Biome supports the following config files:

- `biome.jsonc`
- `biome.json`

CodeRabbit will use the default settings based on the profile selected if no config file is found.

## Links

- [Biome Configuration](https://biomejs.dev/reference/configuration/)