Peter W 612aad6515 Add elementType to StripeJS change event handler (#35067) ...

Changing to match Stripe's reference documentation:
> "All events have a payload object that has an elementType property with the type of the Element that emitted the event."

See:
* https://stripe.com/docs/stripe-js/reference#element-on

2019-05-04 00:56:14 -07:00

..

customer.d.ts

…

element.d.ts

…

index.d.ts

…

payment.d.ts

…

shipping.d.ts

…

source.d.ts

…

stripejs-tests.ts

…

token.d.ts

…

tsconfig.json

…

tslint.json

…