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
Custom Flatten Function 660307.1 Ops/sec
Array.prototype.flat 858527.2 Ops/sec
Script Preparation code:
Tests:
  • Custom Flatten Function

  • Array.prototype.flat