Run details:
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_4) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/80.0.3987.163 Safari/537.36
Chrome 80
Mac OS X 10.15.4
Desktop
4 years ago
Test name Executions per second
Array.prototype.concat 7013115.5 Ops/sec
spread operator 30520676.0 Ops/sec
Array.prototype.flat 1011891.3 Ops/sec
Tests:
  • Array.prototype.concat

  • spread operator

  • Array.prototype.flat