Exception Handling

Exception_Handling.js

function notify(message) {
  return new Promise((resolve, reject) => {
    try {
      let response = NotificationService.send(message);
      resolve(response);
    } catch (err) {
      reject(err);
    }
  });
}

function saveData() {
  return new Promise((resolve, reject) => {
    try {
      let response = DB.query("insert into ...");
      resolve(response);
    } catch (err) {
      reject(err);
    }
  });
}

saveData()
  .then(() => notify("Data Saved"))
  .then((data) => {
    //do something with Right result
  })
  .catch((err) => {
    //do something with Left error
  });