Run details:
Mozilla/5.0 (Macintosh; Intel Mac OS X 10.14; rv:109.0) Gecko/20100101 Firefox/115.0
Firefox 115
Mac OS X 10.14
Desktop
2 years ago
Test name Executions per second
Lodash cloneDeep 108320.5 Ops/sec
Native map deep slice(turns objects into arrays) 7681297.0 Ops/sec
Native JSON parse 234449.0 Ops/sec
Native map deep slice at 0(turns objects into arrays) 6860395.0 Ops/sec
Native map(shallow clone) 15871767.0 Ops/sec
Recursive deep clone 1122687.4 Ops/sec
Map deep clone 1132585.6 Ops/sec
Object.assign shallow clone 12540701.0 Ops/sec
structuredClone 160125.0 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