Function requiredArg

tools/generate-package-json.ts:300–306

(args: Args, name: keyof Args)

}

function requiredArg(args: Args, name: keyof Args): string {
  const value = args[name]
  if (typeof value !== 'string' || !value) {
    throw new Error(`--${String(name)} is required`)
  }
  return value
}

function main(args: Args): void {
  const rootPackageJsonPath = requiredArg(args, 'root-package-json')