Run details:
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/91.0.4472.114 Safari/537.36
Chrome 91
Mac OS X 10.15.7
Desktop
3 years ago
Test name Executions per second
Array.prototype.concat 5226118.5 Ops/sec
spread operator 28539306.0 Ops/sec
Array.prototype.flat 815520.6 Ops/sec
Tests:
  • Array.prototype.concat

  • spread operator

  • Array.prototype.flat