Run results for: Lodash cloneDeep vs Object spread

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:139.0) Gecko/20100101 Firefox/139.0

Browser: Firefox 139

Operating system: Windows

Device Platform: Desktop

Date tested: 10 months ago

Test name	Executions per second
_cloneDeep	75985.6 Ops/sec
Object spread	2109088.2 Ops/sec
Structured clone	99214.3 Ops/sec
Object.assign	6769927.5 Ops/sec

HTML Preparation code:


<script src='https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.5/lodash.min.js'></script>

Script Preparation code:

window.obj = {};
// 10 number properties
for (let i = 0; i < 10; i++) {
    const key = (Math.random() + 1).toString(36).substring(7);
    obj[key] = Math.random();
}
// 10 nested object properties
for (let i = 0; i < 10; i++) {
    const key = (Math.random() + 1).toString(36).substring(7);
    obj[key] = {
        foo: Math.random(),
        bar: true,
        baz: {
            baz: "Hello World"
        }
    }
}

Tests:

_cloneDeep
const obj2 = _.cloneDeep(obj)
Object spread
const obj3 = {...obj}
Structured clone
const obj4 = structuredClone(obj)
Object.assign
const obj5 = Object.assign({}, obj)

Run results for: Lodash cloneDeep vs Object spread

_cloneDeep

Object spread

Structured clone

Object.assign