stripe-lambda.js

// Set your secret key: remember to change this to your live secret key in production
// See your keys here: https://dashboard.stripe.com/account/apikeys
var stripe = require("stripe")(process.env.STRIPE_KEY_SECRET);

exports.handler = (event, context, callback) => {
  //console.log('Received event:', JSON.stringify(event, null, 2));

  const done = (err, res) =>
    callback(null, {
      statusCode: err ? "400" : "200",
      body: err ? err.message : JSON.stringify(res),
      headers: {
        "Content-Type": "application/json",
        "X-Requested-With":"*",
        "Access-Control-Allow-Headers":"Content-Type,X-Amz-Date,Authorization,X-Api-Key,x-requested-with",
        "Access-Control-Allow-Origin":"*",
        "Access-Control-Allow-Methods":"POST,GET,OPTIONS"
      }
    });

  switch (event.httpMethod) {
    case "POST":
      // Token is created using Stripe.js or Checkout!
      // Charge the user's card:
      var body = JSON.parse(event.body) || event.body;
      var charge = stripe.charges.create(
        {
          amount: body.amount,
          currency: "usd",
          source: body.stripeToken,
          description:   body.description || 'Thorium Donation payment '+body.order_id,
          receipt_email: body.receipt_email || null
        },
        function(err, charge) {
          done(err, charge);
        }
      );
      break;
    default:
      done(new Error(`Unsupported method "${event.httpMethod}"`));
  }
};