class's methods declared in background does not show up in foreground!

[amirhouieh]

I am going to explain the problem by following demonstration:

--------background module

const cpuIntensive = {
      doStuff(){
           let temp = [];
           for(var x=0; x<10; x++)
                temp.push( new MyClass(x) )

          return temp
      }
}

class MyClass{
    constructor(_path){
        this.prop_1=   _path
        this.prop_2 = "/index"
    }
    someMethod() {
        return  this.prop_1+ this.prop_2
    }
}

--------foreground module

const foreground = require('electron-process').foreground;
const test = foreground.getModule(require('./cpuIntensive'));

test.readProfiles()
    .then((data)=>{
        for(var x in data)
            console.log( data[x].someMethod() );
    })
    .catch((reason) => console.error(reason));

error=> TypeError: data[x].someMethod is not a function(…)
althoughdata[x].prop_1 and data[x].prop_2 both are there! I am wonder if this has something to do with the electron-process or for example objectHash?