Run details:
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/84.0.4147.135 Safari/537.36 OPR/70.0.3728.178
Opera 70
Mac OS X 10.15.6
Desktop
4 years ago
Test name Executions per second
Array.prototype.concat 6752342.5 Ops/sec
spread operator 29840124.0 Ops/sec
Array.prototype.flat 947365.0 Ops/sec
Tests:
  • Array.prototype.concat

  • spread operator

  • Array.prototype.flat