Object Constructor Factory Fails in Atom

[KonVas]

Hey, I noticed this strange issue when working in atom and hydra, when I try to add something like this

function Performer(id, address, val) {
  this.id = id;
  this.address = address;
  this.val = val;
}

It is not evaluated, thus cannot be found by the rest of the program. However, evaluated in terminal window of hydra seems to be okay... is it something known, basically, isn't possible to add objects in this way in atom?