Run details:
Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:120.0) Gecko/20100101 Firefox/120.0
Firefox 120
Windows
Desktop
2 years ago
Native map(shallow clone)
2.2M/s
Object.assign shallow clone
1.6M/s
Native map deep slice(turns objects into arrays)
110K/s
Native map deep slice at 0(turns objects into arrays)
109K/s
Recursive deep clone
45K/s
Map deep clone
43K/s
Native JSON parse
5K/s
Lodash cloneDeep
3K/s
View exact numbers
Test name Executions per second
Native map(shallow clone) 2,234,273 Ops/sec
Object.assign shallow clone 1,634,521 Ops/sec
Native map deep slice(turns objects into arrays) 109,793 Ops/sec
Native map deep slice at 0(turns objects into arrays) 108,842 Ops/sec
Recursive deep clone 45,099 Ops/sec
Map deep clone 42,657 Ops/sec
Native JSON parse 4,542 Ops/sec
Lodash cloneDeep 3,380 Ops/sec
HTML Preparation code:
Script Preparation code:
Tests: