Tips for resolving the error message "yourAPI is not defined"

Recently, I've been diving into react-native-iap and encountered a problem along the way. I kept getting an error message saying 'yourAPI is not defined'

import RNIap, {
  purchaseErrorListener,
  purchaseUpdatedListener,
  type ProductPurchase,
  type PurchaseError
} from 'react-native-iap';

class RootComponent extends Component<*> {
  purchaseUpdateSubscription = null
  purchaseErrorSubscription = null

  componentDidMount() {
    this.purchaseUpdateSubscription = purchaseUpdatedListener((purchase: ProductPurchase) => {
      console.log('purchaseUpdatedListener', purchase);
      const receipt = purchase.transactionReceipt;
      if (receipt) {
        yourAPI.deliverOrDownloadFancyInAppPurchase(purchase.transactionReceipt)
        .then((deliveryResult) => {
          if (isSuccess(deliveryResult)) {

            if (Platform.OS === 'ios') {
              RNIap.finishTransactionIOS(purchase.transactionId);
            } else if (Platform.OS === 'android') {
              // If consumable (can be purchased again)
              RNIap.consumePurchaseAndroid(purchase.purchaseToken);
              // If not consumable
              RNIap.acknowledgePurchaseAndroid(purchase.purchaseToken);
            }
          } else {
            // Retry / conclude the purchase is fraudulent, etc...
          }
        });
      }
    });

    this.purchaseErrorSubscription = purchaseErrorListener((error: PurchaseError) => {
      console.warn('purchaseErrorListener', error);
    });
  }

  componentWillUnmount() {
    if (this.purchaseUpdateSubscription) {
      this.purchaseUpdateSubscription.remove();
      this.purchaseUpdateSubscription = null;
    }
    if (this.purchaseErrorSubscription) {
      this.purchaseErrorSubscription.remove();
      this.purchaseErrorSubscription = null;
    }
  }
}

I'm a bit confused about what 'yourAPI.deliverOrDownloadFancyInAppPurchase' does. Anyone familiar with 'yourAPI' who can provide some insight?

Answer №1

Your API is the key to connecting with users who make in-app purchases. For instance, in a game scenario, you may offer a starter package for sale through in-app purchases. When a user buys this starter package, they pay Google Play or the App Store, and then your backend API needs to confirm the transaction was successful and deliver the starter kit to the user. This process involves making a call within a listener function like

backendApi.verifyPurchase(purchase.transactionReceipt).then((response) => {});

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