类型错误：无法使用 find() 和尚读取未定义的属性“then”

Question

I am working with monk, and when I look for a user in the database using a function, I want their to return a boolean depending on if its found or not. Here is the code:

Function:

function userExist() {
users
    .find()
    .then(result => {
        console.log(result)
        if(result.length != 0) {
            return true;
        } else {
            return false;
        }
    })

}

calling the function(here is the error):

userExist().then(received => {
        console.log(received);
})

Answer 1

You should return your promise inside your userExist function. Otherwise, you have just a function and not a promise to call then().

function userExist() {
return users
  .find()
  .then(result => {
      console.log(result)
      if(result.length != 0) {
          return true;
      } else {
          return false;
    }
})