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bun.sh/docs/guides/install/add-peer.mdx
2025-11-21 14:22:28 -08:00

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---
title: Add a peer dependency
sidebarTitle: Add a peer dependency
mode: center
---
To add an npm package as a peer dependency, use the `--peer` flag.
```sh terminal icon="terminal"
bun add @types/bun --peer
```
---
This will add the package to `peerDependencies` in `package.json`.
```json package.json icon="file-json"
{
"peerDependencies": {
"@types/bun": "^1.3.3" // [!code ++]
}
}
```
---
Running `bun install` will install peer dependencies by default, unless marked optional in `peerDependenciesMeta`.
{/* prettier-ignore */}
```json package.json icon="file-json"
{
"peerDependencies": {
"@types/bun": "^1.3.3"
},
"peerDependenciesMeta": {
"@types/bun": { // [!code ++]
"optional": true // [!code ++]
} // [!code ++]
}
}
```
---
See [Docs > Package manager](/pm/cli/install) for complete documentation of Bun's package manager.