The public api of payment element is not exported.

[cedvdb]

A whole bunch of classes in the web are not exported

stuff like :

  final js.PaymentElementDefaultValues? defaultValues;
  final js.PaymentElementBusiness? business;
  final js.PaymentElementOptionsTerms? terms;
  final js.PaymentElementWalletOptions? wallets;
  final js.PaymentElementApplePayOptions? applePay;