Run details:
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/85.0.4183.121 Safari/537.36
Chrome 85
Mac OS X 10.15.6
Desktop
4 years ago
Test name Executions per second
Array.prototype.concat 6807368.5 Ops/sec
spread operator 31481174.0 Ops/sec
Array.prototype.flat 953926.7 Ops/sec
Tests:
  • Array.prototype.concat

  • spread operator

  • Array.prototype.flat