Run details:
Mozilla/5.0 (Windows NT 6.1; Win64; x64; rv:85.0) Gecko/20100101 Firefox/85.0
Firefox 85
Windows 7
Desktop
3 years ago
Test name Executions per second
reduce + Array.prototype.concat 4453448.5 Ops/sec
Array.prototype.flat 7678996.5 Ops/sec
Manual copy by index #1 3520027.0 Ops/sec
Manual copy by index #2 10435720.0 Ops/sec
Manual copy with push 14530404.0 Ops/sec
Script Preparation code:
Tests:
  • reduce + Array.prototype.concat

  • Array.prototype.flat

  • Manual copy by index #1

  • Manual copy by index #2

  • Manual copy with push