Run details:
Mozilla/5.0 (Macintosh; Intel Mac OS X 11_2_1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/88.0.4324.150 Safari/537.36
Chrome 88
Mac OS X 11.2.1
Desktop
3 years ago
Test name Executions per second
reduce + Array.prototype.concat 1205141.8 Ops/sec
Array.prototype.flat 269578.6 Ops/sec
Manual copy 1551057.5 Ops/sec
Tests:
  • reduce + Array.prototype.concat

  • Array.prototype.flat

  • Manual copy