bun.sh/docs/guides/install/add-optional.md

name

name
Add an optional dependency

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

$ bun add zod --optional

---

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

{
  "optionalDependencies": {
+   "zod": "^3.0.0"
  }
}

---

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