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To add an npm package as a peer dependency, use the --peer flag.

terminal

bun add @types/bun --peer

This will add the package to peerDependencies in package.json.

package.json

{
  "peerDependencies": {
    "@types/bun": "^1.3.3"
  }
}

Running bun install will install peer dependencies by default, unless marked optional in peerDependenciesMeta.

package.json

{
  "peerDependencies": {
    "@types/bun": "^1.3.3"
  },
  "peerDependenciesMeta": {
    "@types/bun": { 
      "optional": true
    } 
  }
}

See Docs > Package manager for complete documentation of Bun’s package manager.

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