Run details:
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/90.0.4430.212 Safari/537.36
Chrome 90
Mac OS X 10.15.7
Desktop
3 years ago
Test name Executions per second
Array.prototype.concat 5476026.5 Ops/sec
spread operator 31856544.0 Ops/sec
Array.prototype.flat 923659.3 Ops/sec
Tests:
  • Array.prototype.concat

  • spread operator

  • Array.prototype.flat