Add a development dependency

To add an npm package as a development dependency, use bun add --development.

$ bun add zod --dev
$ bun add zod -d # shorthand

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

{
  "devDependencies": {
    "zod": "^3.0.0"
  }
}

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