Push notifications in Progressive web app through

问题:

while sending push notification i got ( Uncaught (in promise) ReferenceError: require is not defined(…)) error.here is my code

 const endPoint = subscription.endpoint.slice(subscription.endpoint.lastIndexOf('/')+1);
console.log(endPoint);
var gcm = require('node-gcm');
var message = new gcm.Message({
    notification: {
        title: "Hello, World",
        icon: "ic_launcher",
        body: "This is a notification that will be displayed ASAP.",
        tag:"hello"
    }
});

var regTokens = [endPoint];
  var sender = new gcm.Sender('AIzaSyD9Bcxd_MQZFoGjO1y_hPm-xUdgnM25Ny4'); //API Key
  // Now the sender can be used to send messages
  sender.send(message, { registrationTokens: regTokens }, function (error, response) {
   if (error) {
      console.error(error);
      res.status(400);
    }
   else {
      console.log(response);
      res.status(200);
    }
  });
      })
    })
}

Screenshot of error enter image description here

回答1:

This code uses require, so it looks to me like you're trying to use node code in the browser. To do that you'll need to use something like Browserify, although I'm not sure that's going to work for node-gcm as it may have certain requirements about sending network requests without cross origin restrictions etc.