Run details:
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_3) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/79.0.3945.130 Safari/537.36
Chrome 79
Mac OS X 10.15.3
Desktop
4 years ago
Test name Executions per second
Array.prototype.concat 4851017.5 Ops/sec
spread operator 19847508.0 Ops/sec
Array.prototype.flat 753195.6 Ops/sec
Tests:
  • Array.prototype.concat

  • spread operator

  • Array.prototype.flat