Function getPackageManagerCommand

packages/vite/src/node/utils.ts:1704–1723

(
  type: CommandType = 'install',
)

type CommandType = 'install' | 'uninstall' | 'update'
export function getPackageManagerCommand(
  type: CommandType = 'install',
): string {
  const packageManager =
    process.env.npm_config_user_agent?.split(' ')[0].split('/')[0] || 'npm'
  switch (type) {
    case 'install':
      return packageManager === 'npm' ? 'npm install' : `${packageManager} add`
    case 'uninstall':
      return packageManager === 'npm'
        ? 'npm uninstall'
        : `${packageManager} remove`
    case 'update':
      return packageManager === 'yarn'
        ? 'yarn upgrade'
        : `${packageManager} update`
    default:
      throw new TypeError(`Unknown command type: ${type}`)
  }
}

export function isDevServer(
  server: ViteDevServer | PreviewServer,