Private Object Functions

app.js

'use strict'

let MyObject = require('./myObject');
let myObjectInstance = new MyObject('abc');

console.log(myObjectInstance.externalFunction());

myObject.js

'use strict'

const MyObject = function MyObject(specialValue) {
  this.objectSpecificValue = specialValue;
};

const privateFunction = function privateFunction() {
  // Why can we not properly access "this" since privateFunction would always be called from child objects? 
  console.log('inside the privateFunction: ', this.objectSpecificValue);
  return this.objectSpecificValue;
};

MyObject.prototype.externalFunction = function() {
  return privateFunction();
};

module.exports = MyObject;