gistfile1.txt

exports.notification = (req, res, next) => {
  const notificationPayload = {
    notification: {
      title: 'Blogial new post',
      body: req.body.title,
      icon: 'assets/icons/icon-512x512.png'
    }
  };
  Subscription.find()
    .then(subscriptions => {
      const promises = [];
      subscriptions.forEach(subscription => {
        promises.push(
          webpush.sendNotification(
            subscription,
            JSON.stringify(notificationPayload))
            .then((response) => response)
        );
      });
      Promise.all(promises).then((response) => res.status(200).json(response));
    }).catch(error => {
      res.status(500).json(error);
    });
};