如何在写await async的时候不用try catch

function asyncTask(cb) {
   asyncFuncA.then(AsyncFuncB)
      .then(AsyncFuncC)
      .then(AsyncFuncD)
      .then(data => cb(null, data)
      .catch(err => cb(err));
}

async function asyncTask(cb) {
    const user = await UserModel.findById(1);
    if(!user) return cb(‘No user found‘);
 
    const savedTask = await TaskModel({userId: user.id, name: ‘Demo Task‘});
    
    if(user.notificationsEnabled) {
         await NotificationService.sendNotification(user.id, ‘Task Created‘);  
    }
 
    if(savedTask.assignedUser.id !== user.id) {
        await NotificationService.sendNotification(savedTask.assignedUser.id, ‘Task was created for you‘);
    }
 
    cb(null, savedTask);
}

async function asyncTask(cb) {
    try {
       const user = await UserModel.findById(1);
       if(!user) return cb(‘No user found‘);
    } catch(e) {
        return cb(‘Unexpected error occurred‘);
    }
 
    try {
       const savedTask = await TaskModel({userId: user.id, name: ‘Demo Task‘});
    } catch(e) {
        return cb(‘Error occurred while saving task‘);
    }
 
    if(user.notificationsEnabled) {
        try {
            await NotificationService.sendNotification(user.id, ‘Task Created‘);  
        } catch(e) {
            return cb(‘Error while sending notification‘);
        }
    }
 
    if(savedTask.assignedUser.id !== user.id) {
        try {
            await NotificationService.sendNotification(savedTask.assignedUser.id, ‘Task was created for you‘);
        } catch(e) {
            return cb(‘Error while sending notification‘);
        }
    }
 
    cb(null, savedTask);
}

export default function to(promise) {
   return promise.then(data => {
      return [null, data];
   })
   .catch(err => [err]);
}
 

function taskPromise(status) {
      return new Promise((resolve, reject) => {
        setTimeout(() => {
          if (status === "fail") {
            return reject("error")
          } else {
            return resolve("success")
          }
        }, 1000)
      })
  }
 
async function asyncTasks() {
     let err, result
     [err, result] = await to(taskPromise(""))
     if (err) {
        console.log("it‘s error")
     } else {
        console.log("it‘s" + result)
     }
 
 
     [err, result] = await to(taskPromise("fail"))
     if (err) {
        console.log("it‘s error")
     } else {
        console.log("it‘s" + result)
     }
}
 
  asyncTasks()   //it‘ssuccess it‘s error