woocommerce-paypal-payments/modules/ppcp-applepay/resources/js/Context/PreviewHandler.js

import BaseHandler from "./BaseHandler";

class PreviewHandler extends BaseHandler {

    constructor(buttonConfig, ppcpConfig, externalHandler) {
        super(buttonConfig, ppcpConfig, externalHandler);
    }

    transactionInfo() {
        // We need to return something as ApplePay button initialization expects valid data.
        return {
            countryCode: "US",
            currencyCode: "USD",
            totalPrice: "10.00",
            totalPriceStatus: "FINAL"
        }
    }

    createOrder() {
        throw new Error('Create order fail. This is just a preview.');
    }

    approveOrder(data, actions) {
        throw new Error('Approve order fail. This is just a preview.');
    }

    actionHandler() {
        throw new Error('Action handler fail. This is just a preview.');
    }

    errorHandler() {
        throw new Error('Error handler fail. This is just a preview.');
    }

}

export default PreviewHandler;