Run results for: cloneDeep VS spread all around fixed

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:81.0) Gecko/20100101 Firefox/81.0

Browser: Firefox 81

Operating system: Windows

Device Platform: Desktop

Date tested: 4 years ago

Test name	Executions per second
spread	1106073.2 Ops/sec
cloneDeep	125012.6 Ops/sec

Script Preparation code:

window.sourceO = {
    foo: 42,
    bar: {
        list: [0, 1, 2, 3],
        text: 'hello'
    },
    biz: {
        nest: {
            nest: {
                nest: {
                    a: 42,
                    b: 12
                }
            }
        }
    }
};

Tests:

spread
const copySpread = { ...window.sourceO, nest: {nest: {nest: {...window.sourceO.biz.nest.nest.nest, b: 42}}}};
cloneDeep
let copyCloneDeep = _.cloneDeep(window.sourceO); copyCloneDeep.biz.nest.nest.nest.b = 42;