Run results for: Lottie Clone 15KB

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/102.0.5005.61 Safari/537.36

Browser: Chrome 102

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: one year ago

Test name	Executions per second
JSON Clone	6605.2 Ops/sec
Structured Clone	6106.5 Ops/sec
recursiveDeepCopy	5001.7 Ops/sec
Lodash cloneDeep	3487.5 Ops/sec
Immutable.js	1603.1 Ops/sec

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function recursiveDeepCopy(o) {
    var newO,
        i;

    if (typeof o !== 'object') {
        return o;
    }
    if (!o) {
        return o;
    }

    if (Object.prototype.toString.apply(o) === '[object Array]') {
        newO = [];
        for (i = 0; i < o.length; i += 1) {
            newO[i] = recursiveDeepCopy(o[i]);
        }
        return newO;
    }

    newO = {};
    for (i in o) {
        if (o.hasOwnProperty(i)) {
            newO[i] = recursiveDeepCopy(o[i]);
        }
    }
    return newO;
}

var copy = null;

Tests:

JSON Clone
copy = JSON.parse(JSON.stringify(lottie));
Structured Clone
copy = structuredClone(lottie);
recursiveDeepCopy
copy = recursiveDeepCopy(lottie);
Lodash cloneDeep
copy = _.cloneDeep(lottie);
Immutable.js
copy = Immutable.fromJS(lottie).toJS();

Run results for: Lottie Clone 15KB

JSON Clone

Structured Clone

recursiveDeepCopy

Lodash cloneDeep

Immutable.js