Run details:
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/91.0.4472.164 Safari/537.36
Chrome 91
Linux
Desktop
2 years ago
Test name Executions per second
Array.prototype.concat 5341082.0 Ops/sec
spread operator 28505536.0 Ops/sec
Array.prototype.flat 862007.8 Ops/sec
Tests:
  • Array.prototype.concat

  • spread operator

  • Array.prototype.flat