Run results for: Mutate array vs memory efficient map

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/130.0.0.0 Safari/537.36

Browser: Chrome 130

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: one month ago

Test name	Executions per second
Mutate array	85.0 Ops/sec
Memory efficient map	15264040.0 Ops/sec

Script Preparation code:

var test = [];

for (let i = 0; i < 100000; i++) {
  test.push(i);
}

Tests:

Mutate array
for (let i = 0; i < test.length; i++) { test[i] = i * 2; }
Memory efficient map
const copyTest = []; for (let i = 0; i < test.length; i++) { const currentItem = test.shift(); copyTest.push(currentItem * 2); }