Run results for: cloneDeep VS spread vs stringify

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_6) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/15.6.1 Safari/605.1.15

Browser: Safari 15

Operating system: Mac OS X 10.15.6

Device Platform: Desktop

Date tested: 2 years ago

Test name	Executions per second
spread	1251085.4 Ops/sec
cloneDeep	164937.7 Ops/sec
stringyClone	246590.1 Ops/sec

Script Preparation code:

sourceO = {
    foo: 42,
    bar: {
        list: [0, 1, 2, 3],
        text: 'hello'
    },
    biz: {
        nest: {
            nest: {
                nest: {
                    a: 42,
                    b: 12
                }
            }
        }
    }
};

stringyClone = o => JSON.parse(JSON.stringify(o));

Tests:

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