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              // Create a defensive factory
const defensiveObjectFactory = (obj) => {

  // Our handler that rejects any change to the object and any nested objects inside it
  const rejector = {
    get(obj, prop) {

      // If dealing with nested object, nest the proxy untill it reaches the direct property of it's parent proxy
      if (typeof obj[prop] === 'object' && obj[prop] !== null) return new Proxy(obj[prop], rejector)
      // If prop is directly accessible, just do the default operation
      else return obj[prop]


    set(obj, prop, val, rec) {

      // This time we traverse the object tree to see whether it contains prop or not
      // If prop is not currently present in obj, add it
      if (!(prop in obj)) {
        obj[prop] = val
        return true

      // Else warn about it and prevent assignment
      console.warn(`Can not set prop ${prop} on freezed object`)
      // Return the proxy itself.
      // Note that we could return false, since returning false will create a TypeError, the latter code would always have to be inside a try-catch block which is immpossible and not flexbile.
      return rec

// Now let's use it and put it into test
// Start our object with default values
let testObj = freezeObjectFactory({name: 'Farzad', parent: {father: {name: 'Ali'}}})

// try to change values
testObj.name = 'John' // Can not set prop name on freezed object

testObj.parent.father.name = 'Mark' // Can not set prop name on freezed object

testObj.id = 1 // In this case it could be added cause id is new

console.log(testObj) // not the same object, it has `id` on it
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