Use destructuring to import TwilioServerlessApiClient in the first example. Without that the following error is thrown:

const client = new TwilioServerlessApiClient({
               ^
TypeError: TwilioServerlessApiClient is not a constructor

Contributing to Twilio

All third-party contributors acknowledge that any contributions they provide will be made under the same open-source license that the open-source project is provided under.

• I acknowledge that all my contributions will be made under the project's license.