import { EventEmitter } from 'events'; let _inAppPurchase; if (process.platform === 'darwin') { const { inAppPurchase, InAppPurchase } = process.electronBinding('in_app_purchase'); // inAppPurchase is an EventEmitter. Object.setPrototypeOf(InAppPurchase.prototype, EventEmitter.prototype); EventEmitter.call(inAppPurchase); _inAppPurchase = inAppPurchase; } else { _inAppPurchase = new EventEmitter(); Object.assign(_inAppPurchase, { purchaseProduct: () => { throw new Error('The inAppPurchase module can only be used on macOS'); }, canMakePayments: () => false, getReceiptURL: () => '' }); } export default _inAppPurchase;