stripeExample.js

const express = require('express');
const bodyParser = require('body-parser');
const { stripe, webhookSecret } = require('./index');

const router = express();

router.post('/stripe/webhook', bodyParser.raw({ type: 'application/json' }), async (req, res, next) => {
  const sig = req.headers['stripe-signature'];
  let event;
  try {
    event = stripe.webhooks.constructEvent(req.rawBody, sig, webhookSecret); // fails if changed to req.body
  } catch (err) {
    console.error('stripe webhook error during construct event:');
    console.error(err);
    return res.status(400).send(`Webhook Error: ${err.message}`);
  }
});