Run details:
Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:126.0) Gecko/20100101 Firefox/126.0
Firefox 126
Mac OS X 10.15
Desktop
2 years ago
Test name Executions per second
Lodash cloneDeep 182711.2 Ops/sec
Native map deep slice(turns objects into arrays) 11968520.0 Ops/sec
Native JSON parse 299870.2 Ops/sec
Native map deep slice at 0(turns objects into arrays) 10724310.0 Ops/sec
Native map(shallow clone) 21478990.0 Ops/sec
Recursive deep clone 1663304.5 Ops/sec
Map deep clone 1672493.0 Ops/sec
Object.assign shallow clone 20946204.0 Ops/sec
structuredClone 194853.9 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