Run results for: Chunk - lodash vs javascript vs for loop vs reduce

Run details:

User agent: Mozilla/5.0 (Linux; Android 10; K) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/114.0.0.0 Mobile Safari/537.36

Browser: Chrome Mobile 114

Operating system: Android

Device Platform: Mobile

Date tested: one year ago

Test name	Executions per second
lodash	314.7 Ops/sec
native new	1620.4 Ops/sec
native old	1492.1 Ops/sec
native for loop	407.8 Ops/sec

HTML Preparation code:

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

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

Script Preparation code:

var values = new Array(200 * 200 * 4)

 
var values = new Array(200 * 200 * 4)

Tests:

lodash
var chunks = _.chunk(values, 4)
var chunks = _.chunk(values, 4)

native new

const chunk = (input, size) => {
  return input.reduce((arr, item, idx) => {
    if (idx % size === 0) {
      arr.push([item]);
    }
    else {
      arr[arr.length - 1].push(item);
    }

    return arr;
  }, []);
}

var chunks = chunk(values, 4)

​x
 
const chunk = (input, size) => {  return input.reduce((arr, item, idx) => {    if (idx % size === 0) {      arr.push([item]);    }    else {      arr[arr.length - 1].push(item);    }​    return arr;  }, []);}​var chunks = chunk(values, 4)

native old

const chunk = (input, size) => {
  return input.reduce((arr, item, idx) => {
    return idx % size === 0
      ? [...arr, [item]]
    : [...arr.slice(0, -1), [...arr.slice(-1)[0], item]];
  }, []);
}

var chunks = chunk(values, 4)

 
const chunk = (input, size) => {  return input.reduce((arr, item, idx) => {    return idx % size === 0      ? [...arr, [item]]    : [...arr.slice(0, -1), [...arr.slice(-1)[0], item]];  }, []);}​var chunks = chunk(values, 4)

native for loop

const chunk = (input, size) => {
  const arr = [];
  for (let i = 0; i < input.length; i += size) {
    arr.push(input.slice(i, i + size));
  }
  return arr;
};

var chunks = chunk(values, 4)

 
const chunk = (input, size) => {  const arr = [];  for (let i = 0; i < input.length; i += size) {    arr.push(input.slice(i, i + size));  }  return arr;};​var chunks = chunk(values, 4)