Benchmark: Lodash cloneDeep vs JSON Clone v. 4

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...',
    selectors: ['.sada', 'asdgqa', '.sada', 'asdgqa', '.sada', 'asdgqa'],
    selectors2: ['.sada', 'asdgqa', '.sada', 'asdgqa', '.sada', 'asdgqa'],
    selectors3: ['.sada', '.sadsafasa', 'asdasdasf', '.sasdasdasada', 'asdasdasdasdasd', '.sasdasdasada', 'asdasdasdasdasd']
  }
};

var myCopy = null;

Tests:

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

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Lodash cloneDeep
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 what's being tested in this benchmark.

**Benchmark Purpose**

The benchmark compares the performance of two approaches to create a deep copy of an object:

1. `lodash.cloneDeep()` (Lodash cloneDeep)
2. `JSON.parse(JSON.stringify())` (JSON Clone)

These methods are used to create copies of objects, arrays, or values in JavaScript.

**Options Compared**

The benchmark is comparing the performance of these two approaches on a specific test case that creates an object with nested structures and properties.

**Pros and Cons of Each Approach:**

1. **Lodash cloneDeep()**
	* Pros:
		+ More efficient for deep cloning complex objects
		+ Handles cycles (circular references) correctly
		+ Supports various types, including arrays, objects, and functions
	* Cons:
		+ Requires the `lodash` library to be included in the test code
		+ May have a larger memory footprint due to the library's functionality
2. **JSON.parse(JSON.stringify())**
	* Pros:
		+ Lightweight and compact, with minimal dependencies
		+ Fast and efficient for simple objects and arrays
	* Cons:
		+ Can be slow or even fail for complex objects (circular references)
		+ Only works well for simple data structures; more complex ones may require additional handling

**Library:**

The `lodash` library is used in the benchmark for the `cloneDeep()` function. Lodash is a popular JavaScript utility library that provides a wide range of functions for tasks such as array manipulation, string formatting, and object manipulation.

**Special JS Features or Syntax:**

There are no special features or syntax mentioned in this benchmark.

**Other Alternatives:**

If you need to create deep copies of objects or arrays in JavaScript without using Lodash or the `JSON.parse(JSON.stringify())` approach:

1. **ES6 Object Spread Operator (`{...obj}`):** This method can be used to create shallow copies of objects, but it may not work well for complex objects with cycles.
2. **Array.prototype.slice() and Array.prototype.concat():** These methods can be used to create shallow copies of arrays, but they may not handle complex objects or arrays with cycles correctly.
3. **For...of loops and Object.keys()/Object.values():** These methods can be used to iterate over object properties, but they may not provide an efficient way to create deep copies.

Keep in mind that the choice of approach depends on your specific use case and performance requirements.

Related benchmarks:

Lodash cloneDeep vs JSON Clone v. 4 (version: 0)

Comparing performance of: Lodash cloneDeep vs Json clone

Created: 6 years ago by: Guest

Jump to the latest result

Lodash cloneDeep

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):