Run results for: test clone deep

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/66.0.3359.170 Safari/537.36

Browser: Chrome 66

Operating system: Windows

Device Platform: Other

Date tested: 6 years ago

Test name	Executions per second
Copy Array x	64.2 Ops/sec
Copy Array lodash	22.5 Ops/sec
Copy Array json	40.3 Ops/sec

HTML Preparation code:


<script src='https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.5/lodash.min.js'></script>

Script Preparation code:


function x(clone, obj) {
   for(var i in obj)
     clone[i] = (typeof obj[i] == "object" && obj[i] != null) ? x(obj[i].constructor(), obj[i]) : obj[i];
   return clone;
}

var copyArray = [];
var copyObject = {
  id: 1,
  name: "Hello",
  x: true,
  i: {
    y: false,
    a: {
      b: {
        nested: true,
        last: "world"
      },
      foo: "bar"
    }
  }
};

for(var i = 0; i < 10000; i++) {
  copyArray.push(_.cloneDeep(copyObject));
}

Tests:

Copy Array x
var y = x([], copyArray);
Copy Array lodash
var y = _.cloneDeep(copyArray)
Copy Array json
var y = JSON.parse(JSON.stringify(copyArray))

Run results for: test clone deep

Copy Array x

Copy Array lodash

Copy Array json