Run details:
Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/88.0.4324.150 Safari/537.36
Chrome 88
Windows 7
Desktop
3 years ago
Test name Executions per second
reduce + Array.prototype.concat 1682870.9 Ops/sec
Array.prototype.flat 395951.6 Ops/sec
Manual copy 3051498.5 Ops/sec
Tests:
  • reduce + Array.prototype.concat

  • Array.prototype.flat

  • Manual copy