Error "Invalid sort() argument. Must be a string, object, or array"

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Assessment

Difficulty
3/5
Estimated time
1-2 days
Newbie friendliness
30/100
Issue type
Bug
Clarity
Needs clarification
Activity status
Stale
Tech stack
coffeescript, javascript, mongodb, nodejs
Domain
databases

Research direction

No file or test is named in the payload. Start by reproducing the intermittent failure with the shown findOne({}, null, { sort: { age: -1 } }) call, then locate where mquery validates the sort option and raises Invalid sort() argument. Done means a minimal reproduction, the rejecting code path identified, and a test covering the object-sort case.

Written by the indexing model from the issue text.

Description

I have my source code below using coffeescript:
`personSchema = new mongoose.Schema({
name: String,
age: Number
})

Person = mongoose.model('Person', personSchema)

options = {
  sort: { age: -1 }
}

Person.findOne({}, null, options, (err, result) ->
  if err
    console.error('err:', err)
  else
    console.log('result:', result)
)`

Even though the sort value I am using is in the correct syntax for sort query. But every now and then I get the above error. Do you know the reason why?
Version coffee-script: 1.7.1
mongoose: 4.10.6
mquery: 2.3.3
mongodb: 2.2.34

Dominant language
JavaScript
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485
Forks
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