Run details:
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_13_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/83.0.4103.116 Safari/537.36
Chrome 83
Mac OS X 10.13.6
Desktop
4 years ago
Test name Executions per second
Array.prototype.concat 3789621.8 Ops/sec
spread operator 21694170.0 Ops/sec
Array.prototype.flat 496377.3 Ops/sec
Tests:
  • Array.prototype.concat

  • spread operator

  • Array.prototype.flat