ERROR in ./node_modules/nativescript-in-app-purchase/in-app-purchase.android.js 3:18-57
Module not found: Error: Can't resolve 'tns-core-modules/application' in '/Users/justintoth/Dev/housters/UI/node_modules/nativescript-in-app-purchase'
resolve 'tns-core-modules/application' in '/Users/justintoth/Dev/housters/UI/node_modules/nativescript-in-app-purchase'
  Parsed request is a module
  using description file: /Users/justintoth/Dev/housters/UI/node_modules/nativescript-in-app-purchase/package.json (relative path: .)
    resolve as module
      looking for modules in /Users/justintoth/Dev/housters/UI/node_modules
        /Users/justintoth/Dev/housters/UI/node_modules/tns-core-modules doesn't exist
      /Users/justintoth/Dev/housters/UI/node_modules/nativescript-in-app-purchase/node_modules doesn't exist or is not a directory
      /Users/justintoth/Dev/housters/UI/node_modules/node_modules doesn't exist or is not a directory
      looking for modules in /Users/justintoth/Dev/housters/UI/node_modules
        /Users/justintoth/Dev/housters/UI/node_modules/tns-core-modules doesn't exist
      /Users/justintoth/Dev/housters/node_modules doesn't exist or is not a directory
      /Users/justintoth/Dev/node_modules doesn't exist or is not a directory
      /Users/justintoth/node_modules doesn't exist or is not a directory
      /Users/node_modules doesn't exist or is not a directory
      /node_modules doesn't exist or is not a directory
 @ ./src/app/shared/services/billing.service.ts 7:0-62 89:12-64
 @ ./src/app/components/main-login/settings/billing/form/form.component.ts 5:0-74 10:0-63 136:169-186
 @ ./src/app/app.module.ts 134:0-92
 @ ./src/main.ts 4:0-45 6:69-78

import { EventEmitter, Injectable } from '@angular/core';
import { UserView } from '@src/sdk/models';
import { CreditCardView, Stripe } from '@triniwiz/nativescript-stripe';
import { environment } from '@src/environments/environment';
import { UserService } from '@src/sdk/services';
import { AuthService } from '@src/app/shared/services/auth.service';
import { DeviceService } from '@src/app/shared/services/device.service';
import * as inAppPurchase from 'nativescript-in-app-purchase';

@Injectable({
    providedIn: 'root',
})
export class BillingService {
    private inAppPurchaseManager: inAppPurchase.InAppPurchaseManager;
    public iosProduct: inAppPurchase.InAppProduct;
    public iosProductUpdated = new EventEmitter<boolean>();
    private stripe: Stripe;
    private processedTransactionUpdates = {};

    constructor(
        private authService: AuthService,
        private userService: UserService,
        private deviceService: DeviceService
    ) {
    }

    private iosProductName(user: UserView): string {
        const productName = `housters${user.unitCount || 1}`;
        if (user.billingPromotion?.monthlyDiscountPercentage) {
            return `${productName}_${Math.round(user.billingPromotion?.monthlyDiscountPercentage * 100)}`;
        }
        return productName;
    }

    public subscriptionOutOfSync(user: UserView): boolean {
        if (!this.deviceService.isIos) {
            return false;
        }
        if (user.enteredBillingInfo) {
            return false;
        }
        const actualProduct = user?.iosSettings?.productId;
        if (!actualProduct) {
            return false;
        }
        const expectedProduct = this.iosProductName(user);
        if (actualProduct === expectedProduct) {
            return false;
        }
        console.log(`Expected product name: ${expectedProduct}, but received: ${actualProduct}`);
        return true;
    }

    public initIosSubscriptions(user: UserView) {
        console.log('Initializing iOS subscriptions...');
        const productName = this.iosProductName(user);
        console.log(`Product name: ${productName}`);

        // Get iOS subscription product, based on number of units and discounts.
        this.inAppPurchaseManager.list([ productName ], inAppPurchase.InAppPurchaseType.Subscription)
            .then((result: inAppPurchase.InAppListProductsResult) => {
                if (!result.products?.length) {
                    console.warn(`Could not find iOS subscription product with name: ${productName}`);
                    alert('Purchasing a subscription is not available on this device! Please try our website.');
                    return;
                }
                this.iosProduct = result.products[0];
                // Found iOS subscription product, set up listener for when we purchase a product.
                console.log('Setting up listener for purchasing products...');
                const purchaseStateUpdateListener: inAppPurchase.InAppPurchaseStateUpdateListener = {
                    onUpdate: (purchaseTransactionState: inAppPurchase.InAppPurchaseTransactionState): void => {
                        // Item has been purchased, sync local items list ...
                        console.log('In transaction updated event! purchaseTransactionState: ', purchaseTransactionState);
                        const key = `${purchaseTransactionState.productIdentifier}-${purchaseTransactionState.resultCode}`;
                        if (!this.processedTransactionUpdates[key]) {
                            this.processedTransactionUpdates[key] = true;
                            if (purchaseTransactionState.resultCode === inAppPurchase.InAppPurchaseResultCode.Failed)
                                alert(`Purchase of ${purchaseTransactionState.productIdentifier} failed!`);
                            // TODO:[JT] How do we access the transaction receipt???
                            /*else if (purchaseTransactionState.transactionReceipt)
                                // Purchase succeeded, store receipt so we can check if the iOS subscription is active from a nightly job.
                                this.userService
                                    .updateIOSSettings({ input: { receiptData: purchaseTransactionState.transactionReceipt } })
                                    .subscribe(updatedUser => {
                                        this.authService.save(updatedUser);
                                        this.iosProductUpdated.emit(purchaseTransactionState.resultCode === inAppPurchase.InAppPurchaseResultCode.Purchased);
                                    });*/
                        }
                    },
                    onUpdateHistory: (purchaseTransactionState: inAppPurchase.InAppPurchaseTransactionState): void => {
                        if (purchaseTransactionState.resultCode === inAppPurchase.InAppPurchaseResultCode.Restored) {
                            // Item has been  restored, sync local items list ...
                        }
                    }
                };
                inAppPurchase.InAppPurchaseManager.bootStrapInstance(purchaseStateUpdateListener).then(inAppPurchaseManager => {
                    this.inAppPurchaseManager = inAppPurchaseManager
                });
            })
    }

    public saveIosSubscription(): Promise<boolean> {
        return this.inAppPurchaseManager.order(this.iosProduct)
            .then((result: inAppPurchase.InAppOrderResult) => {
                if (!result.success)
                    alert('Purchasing a subscription is not available on this device! Please try our website.');
                // Order has been processed, expect confirmation in onUpdate listener...
                return result.success;
            });
    }
}

public initIosSubscriptions(user: UserView) {
        console.log('Initializing iOS subscriptions...');
        const productName = this.iosProductName(user);
        console.log(`Product name: ${productName}`);

        // Get iOS subscription product, based on number of units and discounts.
        this.inAppPurchaseManager.list([ productName ], InAppPurchaseType.Subscription)
            .then((result: InAppListProductsResult) => {
                if (!result.products?.length) {
                    console.warn(`Could not find iOS subscription product with name: ${productName}`);
                    alert('Purchasing a subscription is not available on this device! Please try our website.');
                    return;
                }
                this.iosProduct = result.products[0];
                // Found iOS subscription product, set up listener for when we purchase a product.
                console.log('Setting up listener for purchasing products...');
                const purchaseStateUpdateListener: InAppPurchaseStateUpdateListener = {
                    onUpdate: (purchaseTransactionState: InAppPurchaseTransactionState): void => {
                        // Item has been purchased, sync local items list ...
                        console.log('In transaction updated event! purchaseTransactionState: ', purchaseTransactionState);
                        const key = `${purchaseTransactionState.productIdentifier}-${purchaseTransactionState.resultCode}`;
                        if (!this.processedTransactionUpdates[key]) {
                            this.processedTransactionUpdates[key] = true;
                            if (purchaseTransactionState.resultCode === InAppPurchaseResultCode.Failed)
                                alert(`Purchase of ${purchaseTransactionState.productIdentifier} failed!`);
                            else if (purchaseTransactionState.transactionReceipt)
                                // Purchase succeeded, store receipt so we can check if the iOS subscription is active from a nightly job.
                                this.userService
                                    .updateIOSSettings({ input: { receiptData: purchaseTransactionState.transactionReceipt } })
                                    .subscribe(updatedUser => {
                                        this.authService.save(updatedUser);
                                        this.iosProductUpdated.emit(purchaseTransactionState.resultCode === InAppPurchaseResultCode.Purchased);
                                    });
                        }
                    },
                    onUpdateHistory: (purchaseTransactionState: InAppPurchaseTransactionState): void => {
                        if (purchaseTransactionState.resultCode === InAppPurchaseResultCode.Restored) {
                            // Item has been  restored, sync local items list ...
                        }
                    }
                };
                InAppPurchaseManager.bootStrapInstance(purchaseStateUpdateListener).then(inAppPurchaseManager => {
                    this.inAppPurchaseManager = inAppPurchaseManager
                });
            })
    }