Benchmark: lodash clonedeep vs json.parse(stringify()) 666

HTML Preparation code:

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

Script Preparation code:

var MyObject = {
  description: 'Creates a deep copy of source, which should be an object or an array.',
  myNumber: 123456789,
  myBoolean: true,
  jayson: {
    stringify: 'JSON.stringify() method converts a JavaScript value to a JSON string....',
    parse: 'JSON.parse() method parses a JSON string...'
  }
};
var myObjectString = JSON.stringify(MyObject);

var MyObject2 = {
  description: 'Creates a deep copy of source, which should be an object or an array.',
  myNumber: 123456789,
  myBoolean: true,
  jayson: {
    stringify: 'JSON.stringify() method converts a JavaScript value to a JSON string....',
    parse: 'JSON.parse() method parses a JSON string...'
  }
};

Tests:

Lodash isEqual
myCopy = _.isEqual(MyObject, MyObject2);
Json Clone
myCopy = JSON.parse(JSON.stringify(MyObject)) === myObjectString;

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Lodash isEqual
Json Clone

Fastest: N/A

Slowest: N/A

Latest run results:

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Autogenerated LLM Summary (model llama3.2:3b, generated one year ago):

LLMs can make mistakes. Check important info.

Let's break down the provided benchmark and its components.

**Benchmark Definition JSON**

The benchmark is testing two approaches: `lodash clonedeep` and `JSON.parse(stringify())`.

**Options being compared**

1. **Lodash `cloneDeep()`**: Lodash's `cloneDeep()` function creates a deep copy of an object, recursively copying all nested properties. This approach uses the `cloneDeep()` method from the Lodash library.
2. **JSON.parse(JSON.stringify(object))**: This approach uses the built-in `JSON.parse()` and `JSON.stringify()` methods to create a deep copy of an object. The idea is that by parsing the stringified version back into a JavaScript object, we should get a deep copy.

**Pros and Cons**

1. **Lodash `cloneDeep()`**:
	* Pros: Efficiently creates a deep copy of objects, especially for complex data structures.
	* Cons: Requires the Lodash library to be included in the test environment.
2. **JSON.parse(JSON.stringify(object))**:
	* Pros: No additional libraries are required, and it's a built-in method.
	* Cons: Not designed specifically for deep copying; it can result in a shallow copy if the original object has circular references.

**Library usage**

In this benchmark, Lodash is used via the `lodash.min.js` library, which provides the `cloneDeep()` function. The `JSON.parse()` and `JSON.stringify()` methods are built-in to JavaScript.

**Special JS feature or syntax**

There is no special JavaScript feature or syntax being tested in this benchmark. Both approaches rely on existing features and libraries.

**Other alternatives**

If you wanted to create a deep copy of an object without using Lodash, you could use a recursive function that manually copies all properties:

```javascript
function cloneDeep(object) {
  if (typeof object !== 'object' || object === null) return object;

Another approach would be to use a library like `lodash`'s `clone()` function, which is designed for shallow copying:

```javascript
function clone(object) {
  if (typeof object !== 'object' || object === null) return object;

Keep in mind that these alternatives might not provide the same level of performance or functionality as Lodash's `cloneDeep()` function.

Related benchmarks:

lodash clonedeep vs json.parse(stringify()) 666 (version: 0)

Comparing performance of: Lodash isEqual vs Json Clone

Created: 3 years ago by: Guest

Jump to the latest result

Lodash isEqual

Json Clone

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

No previous run results

Autogenerated LLM Summary (model llama3.2:3b, generated one year ago):