Run results for: Spread operator vs. Array.map

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:109.0) Gecko/20100101 Firefox/115.0

Browser: Firefox 115

Operating system: Mac OS X 10.15

Device Platform: Desktop

Date tested: one year ago

Benchmark engine: Benchmark.js

Map

164K/s

Spread

18K/s

View exact numbers

Test name	Executions per second
✓ Map	164,277 Ops/sec
Spread	18,229 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:

permutations = new Array(10000).map(() => ({ pagination: 'blah blah blah' }));
function updatePagination(action, prev) {
  return action;
}
action = 'something else';
state = { data: { permutations: [] } };
index = 5;

Tests:

Spread
return [...permutations];
Map
return permutations.map(p => p);

Run results for: Spread operator vs. Array.map

A comparison of the performance of the spread operator, [ ...array ], vs. Array.map(i => ...) and

Spread

Map