Charge a customer token from a PubNub Function in a serverless environment using Stripe.

StripeCharge.JS

// DO NOT USE THIS CODE CLIENT SIDE. FOR A PUBNUB SERVERLESS ENV ONLY. 
// Set the module event type to "On Request".
// Create a token with Stripe.JS: https://stripe.com/docs/stripe-js
// Or use a test token: token=tok_visa
export default (request, response) => {
    const vault = require("vault");
    const xhr = require("xhr");
    const token = request.params.token;
    return vault.get("stripe_secret_key").then((apiKey) => {
        const http_options = {
            "method": "POST",
            "headers": {
                "Authorization": "Bearer "+apiKey,
                'Content-Type': 'application/x-www-form-urlencoded',
            },
            "body": "amount=100&currency=usd&source="+token,
        };
        return xhr.fetch("https://api.stripe.com/v1/charges", http_options).then((resp) => {
            if (resp.status == 200) {
               // Record that the user has paid and do something.
            }
            response.status = resp.status;
            return response.send(resp);
        });
    });
};