stripe-react-serverless-27.ts

export const handler = async (
  event: APIGatewayProxyEvent,
  context: any,
  callback: (err: Error | null, data: any) => void,
) => {
  if (!event.body) {
    callback(Error('Invalid body'));
    return;
  }

  try {
    // We validate that the event is coming from an
    // authentic Stripe origin
    const webhookEvent = stripe.webhooks.constructEvent(
      event.body,
      event.headers['Stripe-Signature'],
      process.env.STRIPE_WEBHOOK_SECRET as string,
    );

    // Pull out the data object (customer, invoice, etc...)
    const dataObject = webhookEvent.data.object as any;

    // Get the corrosponding handler from the handlerMapping above
    const handler = handlerMapping[webhookEvent.type];

    if (!handler) {
      callback(null, {
        statusCode: 400,
        body: 'Unexpected event type',
      });
      return;
    }

    await handler(dataObject);

    callback(null, {
      statusCode: 200,
    });
  } catch (error) {
    callback(error);
  }
};