Expo support

[thorsten-stripe]

Is your feature request related to a problem? Please describe.
Expo is one of the most popular frameworks for developing React native applications. I'd expect we'll get a lot of requests about this.

Describe the solution you'd like
Is it possible to suppor expo without needing to eject? If so, how much work would that be?

Describe alternatives you've considered
If this isn't easily possible, can we add a "usage with Expo" guide?

Additional context
Currently, when I try to use CardField within an expo project I get “Invariant Violation: requireNativeComponent: "CardField" was not found in the UIManager.” which is related to the webview usage I beleive.

[trag-stripe]

+1 This request has come in several times this week for expo support

[thorsten-stripe]

Update: we're in touch with Expo and are working together to get the SDK bundled with the Expo SDK v 42 in June. No action required on your side.

[thorsten-stripe]

Here's a shared calendar with the Expo team: https://www.notion.so/expo/9b5adb3c9ff04eb6866da42922b83bce?v=98f05bc730534d3db12971741b7b164e cc @cruzach

[cruzach]

Please feel free to provide any feedback on the above calendar, or put in major events for you all (preliminary release dates, events, etc.)

Once we've got it all integrated, would love to talk about next steps around documentation, marketing, and all that 😄

[alessiocancian]

As far as I know to support Expo you need to use javascript-only libraries, so the implementation should pass through the Javascript SDK...
Will this mean that react-native-web will be supported as well? (without Expo dependencies)

EDIT: I think it's not what I thought, Stripe will be (and actually already is) part of the Expo SDK and available only for iOS and Android.
So to use it on web (Expo or react-native-web) we will still need to write a different implementation using Stripe's Javascript SDK or with React Stripe.