Create Token from JS with `cordova-plugin-applepay`

stripe-token.ts

// Reverse Engineered from
// https://github.com/stripe/stripe-ios/blob/d4e3170fab9ab940816ea28ea8084b48a842e764/Stripe/STPAPIClient%2BApplePay.m#L22-L28
class StripeToken {
  // IPaymentResponse is the response from `makePayment()`
  public async getTokenFromPaymentData(payment: IPaymentResponse) {
    const payload: any = {
      pk_token: atob(payment.paymentData),
      ...this.addressParamsFromPaymentData(payment),
    };

    if (payment.paymentMethodDisplayName) {
      payload.pk_token_instrument_name = payment.paymentMethodDisplayName;
    }

    if (payment.paymentMethodNetwork) {
      payload.pk_token_payment_network = payment.paymentMethodNetwork;
    }

    if (payment.transactionIdentifier) {
      payload.pk_token_transaction_id = payment.transactionIdentifier;
    }

    const response = await fetch('https://api.stripe.com/v1/tokens', {
      method: 'POST',
      headers: {
        'Stripe-Version': '2015-10-12',
        Authorization: `Bearer ${environment.stripePublishableKey}`,
      },
      body: new URLSearchParams(payload),
    });

    const data = await response.json();
    const token = data.id;

    return token;
  }

  private addressParamsFromPaymentData(payment: IPaymentResponse) {
    if (payment.billingNameFirst) {
      const params: any = {};

      if (payment.billingNameFirst) {
        params['card[name]'] = `${payment.billingNameFirst}${
          payment.billingNameLast ? ' ' + payment.billingNameLast : ''
        }`;      }

      if (payment.billingAddressStreet) {
        params['card[address_line1]'] = payment.billingAddressStreet;
        params['card[address_city]'] = payment.billingAddressCity;
        params['card[address_state]'] = payment.billingAddressState;
        params['card[address_zip]'] = payment.billingPostalCode;
        params['card[address_country]'] = payment.billingCountry;
      }

      return params;
    } else {
      return null;
    }
  }
}