# setup-bun

Download, install, and setup [Bun](https://bun.sh) in GitHub Actions.

## Usage

```yaml
- uses: oven-sh/setup-bun@v2
  with:
    bun-version: latest
```

## Using version file

```yaml
- uses: oven-sh/setup-bun@v2
  with:
    bun-version-file: ".bun-version"
```

### Using a custom NPM registry

```yaml
- uses: oven-sh/setup-bun@v2
  with:
    registry-url: "https://npm.pkg.github.com/"
    scope: "@foo"
```

If you need to authenticate with a private registry, you can set the `BUN_AUTH_TOKEN` environment variable.

```yaml
- name: Install Dependencies
  env:
    BUN_AUTH_TOKEN: ${{ secrets.NPM_TOKEN }}
  run: bun install --frozen-lockfile
```

### Override download url

If you need to override the download URL, you can use the `bun-download-url` input.

```yaml
- uses: oven-sh/setup-bun@v2
  with:
    bun-download-url: "https://github.com/oven-sh/bun/releases/latest/download/bun-linux-x64.zip"
```

### Node.js not needed

In most cases, you shouldn't need to use the [setup-node](https://github.com/actions/setup-node) GitHub Action.

## Inputs

| Name               | Description                                           | Default     | Examples                                         |
| ------------------ | ----------------------------------------------------- | ----------- | ------------------------------------------------ |
| `bun-version`      | The version of Bun to download and install.           | `latest`    | `canary`, `1.0.0`, `1.0.x`                       |
| `bun-version-file` | The version of Bun to download and install from file. | `undefined` | `package.json`, `.bun-version`, `.tool-versions` |
| `bun-download-url` | URL to download .zip file for Bun release             |             |                                                  |
| `registry-url`     | Registry URL where some private package is stored.    | `undefined` | `"https://npm.pkg.github.com/"`                  |
| `scope`            | Scope for private packages.                           | `undefined` | `"@foo"`, `"@orgname"`                           |

## Outputs

| Name               | Description                                | Example                                                            |
| ------------------ | ------------------------------------------ | ------------------------------------------------------------------ |
| `bun-version`      | The output from `bun --version`.           | `1.0.0`                                                            |
| `bun-revision`     | The output from `bun --revision`.          | `1.0.0+822a00c4`                                                   |
| `bun-path`         | The path to the Bun executable.            | `/path/to/bun`                                                     |
| `bun-download-url` | The URL from which Bun was downloaded.     | `https://bun.sh/download/latest/linux/x64?avx2=true&profile=false` |
| `cache-hit`        | If the Bun executable was read from cache. | `true`                                                             |