Run details:
Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:122.0) Gecko/20100101 Firefox/122.0
Firefox 122
Mac OS X 10.15
Desktop
2 years ago
Test name Executions per second
Lodash cloneDeep 421868.4 Ops/sec
Native map deep slice(turns objects into arrays) 17352824.0 Ops/sec
Native JSON parse 734311.8 Ops/sec
Native map deep slice at 0(turns objects into arrays) 15656515.0 Ops/sec
Native map(shallow clone) 51985432.0 Ops/sec
Recursive deep clone 4018464.2 Ops/sec
Map deep clone 4042142.0 Ops/sec
Object.assign shallow clone 57025548.0 Ops/sec
structuredClone 597971.0 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