Setter is not called when value is undefined

[lazdmx]

Setters are not fired with undefined value assigned to path.

mongoose = require "mongoose"
Schema = mongoose.Schema

Person = new Schema
  name: String

Person.path( "name" ).set ( x ) ->
  console.log "called with value <#{x}> of type #{typeof x}"
  x

Person = mongoose.model "Person", Person


p = new Person( )
p.name = "John"
p.name = undefined

Output is:

called with value <John> of type string

[th0r]

+1

[ripples-alive]

+1
It really bothers me a lot.

[fiznool]

Is there any chance this fix could be backported to the 3.8 branch?

[vkarpov15]

Not likely, this is something that's debateably backwards-breaking and I'm hesitant to put it into 3.8.x as a bug fix.