Benchmark: Lodash cloneDeep vs JSON stringify

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 myCopy = null;

Tests:

Lodash cloneDeep
myCopy = _.cloneDeep(MyObject);
Json stringify
myCopy = JSON.stringify(MyObject);

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Lodash cloneDeep
Json stringify

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 dive into the world of MeasureThat.net, where JavaScript microbenchmarks come to life.

The provided JSON represents a benchmark test between two approaches: Lodash's `cloneDeep` method and `JSON.stringify`. To understand what is tested, let's break it down:

**Script Preparation Code**

The script preparation code defines an object `MyObject` with several properties:
```javascript
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...'
  }
};
```
This object contains nested properties, which will be used to test the cloning and serialization capabilities of both approaches.

**Html Preparation Code**

The HTML preparation code includes a script tag that loads the Lodash library version 4.17.5:
```javascript
<script src='https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.5/lodash.min.js'></script>
```
This suggests that the `cloneDeep` method will be used from this loaded library.

**Individual Test Cases**

The benchmark consists of two individual test cases:

1. **Lodash cloneDeep**
```javascript
myCopy = _.cloneDeep(MyObject);
```
This test case uses Lodash's `cloneDeep` method to create a deep copy of the `MyObject`.

2. **Json stringify**
```javascript
myCopy = JSON.stringify(MyObject);
```
This test case uses the built-in `JSON.stringify` method to serialize the `MyObject`.

**Comparison and Pros/Cons**

The two approaches differ in their implementation:

* **Lodash cloneDeep**: This method creates a deep copy of the object by recursively cloning all nested properties. It is designed to handle complex data structures.
	+ Pros: Efficiently handles nested objects, provides a clear and predictable outcome.
	+ Cons: May consume more resources due to the recursive cloning process.
* **JSON.stringify**: This method converts the object into a JSON string, which can be stored or transmitted.
	+ Pros: Simple and lightweight implementation, suitable for most use cases.
	+ Cons: Does not preserve the original data structure, only provides a string representation.

**Library and Purpose**

Lodash's `cloneDeep` method is designed to create a deep copy of an object, preserving all nested properties and arrays. It is commonly used when you need to duplicate complex data structures without modifying the original.

**Special JS Feature/Syntax (None)**

There are no special JavaScript features or syntax used in this benchmark. The focus is on comparing two common approaches for cloning and serializing objects.

**Alternatives**

If you're looking for alternatives to Lodash's `cloneDeep` method, consider:

* **JSON.parse(JSON.stringify(obj))**: This approach uses the `parse` method to recreate the object from a JSON string.
* **Array.prototype.slice() + Object.assign()**: For simple cases, you can use these methods to clone an array or object.

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

Related benchmarks:

Lodash cloneDeep vs JSON stringify (version: 0)

Comparing performance of: Lodash cloneDeep vs Json stringify

Created: 5 years ago by: Guest

Jump to the latest result

Lodash cloneDeep

Json stringify

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):