modules library Null safety

Classes

ConnectionResult
DiscountIOS
IAPItem
An item available for purchase from either the Google Play Store or iOS AppStore
PurchasedItem
An item which was purchased from either the Google Play Store or iOS AppStore
PurchaseResult

Enums

PurchaseState
See also https://developer.android.com/reference/com/android/billingclient/api/Purchase.PurchaseState
ResponseCodeAndroid
TransactionState
See also https://developer.apple.com/documentation/storekit/skpaymenttransactionstate