Run details:
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/86.0.4240.111 Safari/537.36
Chrome 86
Windows
Desktop
4 years ago
Test name Executions per second
Array.prototype.concat 5632032.5 Ops/sec
spread operator 31317648.0 Ops/sec
Array.prototype.flat 738268.3 Ops/sec
Tests:
  • Array.prototype.concat

  • spread operator

  • Array.prototype.flat