Extracts a transaction id from an encoded transactional receipt. Throws if the receipt does not match the expected format. NO validation is performed on the receipt, and any data returned should only be used to call the App Store Server API.
The unmodified transactionReceipt
A transaction id, or null if no transactionId is found in the receipt
Extracts a transaction id from an encoded App Receipt. Throws if the receipt does not match the expected format. NO validation is performed on the receipt, and any data returned should only be used to call the App Store Server API.