mirror of
https://github.com/oven-sh/bun
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Co-authored-by: Jarred Sumner <jarred@jarredsumner.com> Co-authored-by: autofix-ci[bot] <114827586+autofix-ci[bot]@users.noreply.github.com>
68 lines
1.6 KiB
Markdown
68 lines
1.6 KiB
Markdown
The `bun why` command explains why a package is installed in your project by showing the dependency chain that led to its installation.
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## Usage
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```bash
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$ bun why <package>
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```
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## Arguments
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- `<package>`: The name of the package to explain. Supports glob patterns like `@org/*` or `*-lodash`.
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## Options
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- `--top`: Show only the top-level dependencies instead of the complete dependency tree.
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- `--depth <number>`: Maximum depth of the dependency tree to display.
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## Examples
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Check why a specific package is installed:
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```bash
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$ bun why react
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react@18.2.0
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└─ my-app@1.0.0 (requires ^18.0.0)
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```
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Check why all packages with a specific pattern are installed:
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```bash
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$ bun why "@types/*"
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@types/react@18.2.15
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└─ dev my-app@1.0.0 (requires ^18.0.0)
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@types/react-dom@18.2.7
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└─ dev my-app@1.0.0 (requires ^18.0.0)
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```
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Show only top-level dependencies:
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```bash
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$ bun why express --top
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express@4.18.2
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└─ my-app@1.0.0 (requires ^4.18.2)
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```
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Limit the dependency tree depth:
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```bash
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$ bun why express --depth 2
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express@4.18.2
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└─ express-pollyfill@1.20.1 (requires ^4.18.2)
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└─ body-parser@1.20.1 (requires ^1.20.1)
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└─ accepts@1.3.8 (requires ^1.3.8)
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└─ (deeper dependencies hidden)
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```
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## Understanding the Output
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The output shows:
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- The package name and version being queried
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- The dependency chain that led to its installation
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- The type of dependency (dev, peer, optional, or production)
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- The version requirement specified in each package's dependencies
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For nested dependencies, the command shows the complete dependency tree by default, with indentation indicating the relationship hierarchy.
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