Run details:
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/89.0.4389.114 Safari/537.36
Chrome 89
Windows
Desktop
3 years ago
Test name Executions per second
Array.prototype.concat 7198643.0 Ops/sec
spread operator 49654908.0 Ops/sec
Array.prototype.flat 960894.3 Ops/sec
Tests:
  • Array.prototype.concat

  • spread operator

  • Array.prototype.flat