Run details:
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/88.0.4324.182 Safari/537.36
Chrome 88
Windows
Desktop
3 years ago
Test name Executions per second
Array.prototype.concat 5898379.5 Ops/sec
spread operator 33948876.0 Ops/sec
Array.prototype.flat 795217.0 Ops/sec
Tests:
  • Array.prototype.concat

  • spread operator

  • Array.prototype.flat