Run details:
Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:121.0) Gecko/20100101 Firefox/121.0
Firefox 121
Mac OS X 10.15
Desktop
2 years ago
Test name Executions per second
Lodash cloneDeep 345162.6 Ops/sec
Native map deep slice(turns objects into arrays) 13823057.0 Ops/sec
Native JSON parse 645612.2 Ops/sec
Native map deep slice at 0(turns objects into arrays) 12920887.0 Ops/sec
Native map(shallow clone) 44574968.0 Ops/sec
Recursive deep clone 3058995.0 Ops/sec
Map deep clone 3106907.2 Ops/sec
Object.assign shallow clone 45090344.0 Ops/sec
structuredClone 486700.0 Ops/sec
HTML Preparation code:
Script Preparation code:
Tests:
  • Lodash cloneDeep

  • Native map deep slice(turns objects into arrays)

  • Native JSON parse

  • Native map deep slice at 0(turns objects into arrays)

  • Native map(shallow clone)

  • Recursive deep clone

  • Map deep clone

  • Object.assign shallow clone

  • structuredClone