Run results for: immutable object/set/array

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/127.0.0.0 Safari/537.36

Browser: Chrome 127

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: one year ago

Test name	Executions per second
object	9.8 Ops/sec
array	364.3 Ops/sec
set	250.2 Ops/sec
immutable set	2947.5 Ops/sec

HTML Preparation code:

<script src="https://cdnjs.cloudflare.com/ajax/libs/immutable/3.8.2/immutable.min.js"></script>
<script src="https://cdn.jsdelivr.net/npm/immutability-helper@2.7.0/index.min.js"></script>

Script Preparation code:

function shuffle(arr) {
  let i = arr.length;
  while (i != 0) {
    let j = Math.floor(Math.random() * i);
    i--;
    [arr[i], arr[j]] = [
      arr[j], arr[i]];
  }
}

n = 1000
toRemove = [];
for (i = 0; i < n; i++) {
  toRemove.push("value" + i);
}
shuffle(toRemove);

Tests:

object
let a = {}; // copy object and add item for (i = 0; i < n; i++) { a = {...a}; a["value" + i] = null; } // copy object and remove item toRemove.forEach(v => { a = {...a}; delete a[v]; });
array
let a = []; // copy array and add item for (i = 0; i < n; i++) { a = [...a]; a.push("value" + i); } // copy array and remove item toRemove.forEach(v => { a = a.filter(x => x !== v); });
set
let a = new Set(); // copy set and add item for (i = 0; i < n; i++) { a = new Set(a); a.add("value" + i); } // copy set and remove item toRemove.forEach(v => { a = new Set(a); a.delete(v); });
immutable set
let a = Immutable.Set(); // add item for (i = 0; i < n; i++) { a = a.add("value" + i); } // remove item toRemove.forEach((v) => { a = a.delete(v); });

Run results for: immutable object/set/array

check performance of adding/removing items from immutable data structures like array, object, Set and Immutable.Set

object

array

set

immutable set