Run results for: lodash vs Array.map vs spread operator

Run details:

User agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/84.0.4147.105 Safari/537.36

Browser: Chrome 84

Operating system: Linux

Device Platform: Desktop

Date tested: 4 years ago

Test name	Executions per second
lodash clone	19.2 Ops/sec
Spread Operator	29.0 Ops/sec
Array.map	3.2 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:

var arr = new Array(10000000).fill(123);
var arr2 = []
for(i=0; i<1000000; i++) {
  var ascii = Math.floor((Math.random() * 25) + 97); 
  var str = String.fromCharCode(ascii); 
  arr2.push(str);
}

Tests:

lodash clone
_.clone(arr); _.clone(arr2);
Spread Operator
[...arr]; [...arr2];
Array.map
arr.map(x => x); arr2.map(x => x);

Run results for: lodash vs Array.map vs spread operator

lodash clone

Spread Operator

Array.map