Run details:
Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:141.0) Gecko/20100101 Firefox/141.0
Firefox 141
Mac OS X 10.15
Desktop
9 months ago
Test name Executions per second
Lodash cloneDeep 488891.4 Ops/sec
Native map deep slice(turns objects into arrays) 26539586.0 Ops/sec
Native JSON parse 851322.4 Ops/sec
Native map deep slice at 0(turns objects into arrays) 26587290.0 Ops/sec
Native map(shallow clone) 52073692.0 Ops/sec
Recursive deep clone 2921153.8 Ops/sec
Map deep clone 1150266.2 Ops/sec
Object.assign shallow clone 41566644.0 Ops/sec
structuredClone 703713.8 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