push notification with working headsup display on android

pushnotification.js

const admin = require("firebase-admin");
const serviceAccount = require("./serviceAccountKey.json");

admin.initializeApp({
  credential: admin.credential.cert(serviceAccount),
  databaseURL: "your database url (optional)"
});

module.exports = (req, res) => {
  const payload = {
    notification: {
      title: "You have been invited to a tripp.",
      body: "Tap here to check it out!",
    },
    data: {
      channelId: "test-channel"
    },
    android: {
      priority: "high",
      notification: {
        channelId: "test-channel",
        sound: "default"
      }
    },
    apns: {
      // headers: {
      //   'apns-priority': '10',
      // },
      payload: {
        aps: {
          sound: "default"
        }
      }
    },
    token:
      "your phone device id"
  };
  admin.messaging().send(payload);
  return res.send("Message sent!");
};