Run details:
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/80.0.3987.132 Safari/537.36
Chrome 80
Mac OS X 10.14.6
Desktop
4 years ago
Test name Executions per second
Array.prototype.concat 3888180.8 Ops/sec
spread operator 18529802.0 Ops/sec
Array.prototype.flat 505148.1 Ops/sec
Tests:
  • Array.prototype.concat

  • spread operator

  • Array.prototype.flat