> ## Documentation Index
> Fetch the complete documentation index at: https://docs.coderabbit.ai/llms.txt
> Use this file to discover all available pages before exploring further.

# Oxlint

> CodeRabbit runs Oxlint to lint JavaScript, TypeScript, and framework files.

[Oxlint](https://oxc.rs/docs/guide/usage/linter) is a blazingly fast JavaScript/TypeScript linter written in Rust that is 50-100x faster than ESLint. CodeRabbit runs Oxlint version 1.78.0.

## Files

Oxlint will run on files with the following extensions:

* `.js`
* `.mjs`
* `.cjs`
* `.jsx`
* `.ts`
* `.mts`
* `.cts`
* `.tsx`
* `.vue`
* `.astro`
* `.svelte`

## Configuration

Oxlint supports the following configuration files:

* `.oxlintrc.json`
* `oxlintrc.json`
* `.oxlintrc`
* `oxlint.json`

CodeRabbit searches the repository recursively for the first supported config file outside common generated and dependency directories and GitHub Actions or CircleCI pipeline paths. It uses that config for every supported changed file in the run.

<Info>
  CodeRabbit only runs Oxlint when an Oxlint config file is present and Biome is disabled.
</Info>

Oxlint is enabled by default. Enable or disable it with `.coderabbit.yaml` or the CodeRabbit web UI:

<Tabs>
  <Tab title=".coderabbit.yaml">
    ```yaml .coderabbit.yaml theme={null}
    reviews:
      tools:
        oxc:
          enabled: true
    ```
  </Tab>

  <Tab title="Web UI">
    Go to **Reviews → Tools → Oxlint** in your organization or repository settings and toggle Oxlint `on` or `off`.
  </Tab>
</Tabs>

## Security policy and restrictions

CodeRabbit runs Oxlint in a sandbox. Because JavaScript-based plugins can execute repository-controlled code, CodeRabbit does not run Oxlint analysis when the Oxlint configuration enables them. A non-empty `jsPlugins` array at the top level or inside any `overrides` entry causes CodeRabbit to skip Oxlint analysis. Configurations that omit `jsPlugins` or set it to an empty array continue to receive Oxlint findings as before.

Oxlint's built-in `plugins` setting continues to work and does not affect eligibility.

## When we skip Oxlint

CodeRabbit will skip running Oxlint when:

* Oxlint is already configured in GitHub Actions, GitLab CI, CircleCI, or Azure Pipelines.
* No Oxlint config file is found.
* Biome is enabled.
* The Oxlint configuration declares a non-empty JavaScript plugins array (`jsPlugins`) at the top level or inside any `overrides` entry.
* The repository's Oxlint configuration cannot be read, is not valid JSON, or does not parse to a JSON object.

## Links

* [Oxlint GitHub Repository](https://github.com/oxc-project/oxc/releases/)
* [Oxlint Website](https://oxc.rs/docs/guide/usage/linter)