How to find difference between two Object and get those changes merge in single Object in JavaScript?

Question

var object1 = {
 "dealer": {
    "name": "Alex",
    "property": "",
    "car": 2
  }
}

var object2 = {
 "dealer": {
    "name": "Alex",
    "property": {
       "rental": 5,
       "commercial": 10
     }
  }
}

Need to merge these types of two object with all the values: Expected Result :

{
"dealer": {
 "name": "Alex",
 "property": {
   "rental": 5,
   "commercial": 10
  },
 "car": 2
 }
}