Run details:
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14_4) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/73.0.3683.103 Safari/537.36
Chrome 73
Mac OS X 10.14.4
Desktop
5 years ago
Test name Executions per second
Array.prototype.concat 7378649.5 Ops/sec
spread operator 31466860.0 Ops/sec
Array.prototype.flat 1123047.8 Ops/sec
Tests:
  • Array.prototype.concat

  • spread operator

  • Array.prototype.flat