Run details:
Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:124.0) Gecko/20100101 Firefox/124.0
Firefox 124
Mac OS X 10.15
Desktop
2 years ago
Test name Executions per second
Lodash cloneDeep 392808.8 Ops/sec
Native map deep slice(turns objects into arrays) 20344688.0 Ops/sec
Native JSON parse 637751.4 Ops/sec
Native map deep slice at 0(turns objects into arrays) 17589522.0 Ops/sec
Native map(shallow clone) 45221432.0 Ops/sec
Recursive deep clone 2958215.2 Ops/sec
Map deep clone 3074828.8 Ops/sec
Object.assign shallow clone 42475704.0 Ops/sec
structuredClone 473144.8 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