Run results for: Multiple chunk

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/126.0.0.0 Safari/537.36

Browser: Chrome 126

Operating system: Windows

Device Platform: Desktop

Date tested: 2 months ago

Test name	Executions per second
Lodash	4693.9 Ops/sec
slice	20022.1 Ops/sec
push	1453.3 Ops/sec
you might not need	1353.7 Ops/sec
bucket	93.6 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 test = Array.from({
    length: 100000
}, () => Math.random())
function createGroupedArray(arr, chunkSize) {
    const groups = [];
    let i = 0;
    while (i < arr.length) {
        groups.push(arr.slice(i, i += chunkSize));
    }
    return groups;
};

function createGroupedArray2(arr, chunkSize) {
    const groups = [];
  for (let i= 0; i < arr.length; i++)
        groups.push(arr.slice(i, i += chunkSize));
    
    return groups;
};


function array_to_chunks(data, size){
   let chunks = []
   let d = data.slice()
   while (d.length >= size) chunks.push(d.splice(0, size))
   return chunks
}

function chunk_ymnn(arr, chunkSize = 1, cache = []) {
  const tmp = [...arr]
  if (chunkSize <= 0) return cache
  while (tmp.length) cache.push(tmp.splice(0, chunkSize))
  return cache
}

function chunkBucket(arr, size) {
  let buckets = []

  // Just create the buckets/chunks storage
  for (let i = 1; i <= Math.ceil(arr.length / size); i++) {
    buckets.push([])
  }

  // Put in the buckets/storage by index access only
  for (let i = 0; i < arr.length; i++) {
    var arrIndex = Math.ceil((i + 1) / size) - 1
    buckets[arrIndex].push(arr[i])
  }

  return buckets;
}

Tests:

Lodash
_.chunk(test,5000)
slice
createGroupedArray(test,5000)
push
array_to_chunks(test,5000)
you might not need
chunk_ymnn(test,5000)
bucket
chunkBucket(test,5000)
slice for
createGroupedArray2(test, 5000)

Run results for: Multiple chunk

Lodash

slice

push

you might not need

bucket

slice for