Benchmark: Lodash cloneDeep vs JSON Stringify/parse

HTML Preparation code:

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

Script Preparation code:

var computed = {
  variables: [],
  assets: {},
  multiSelect: false,
  options: [
    {
      output: "90b27c91-30d1-4582-8df3-ae6b7b54a971",
      selector: {
        type: "selected"
      },
      resource: "external_media",
      id: "c898bb6b-db13-4f7e-bd84-c5db235e4e69"
    },
    {
      output: "8eaf2fcb-534e-4a20-b557-24588f05f501",
      selector: {
        type: "selected"
      },
      resource: "external_media",
      id: "2f1cc472-f85e-43cc-90cd-dfe9644a407d"
    },
    {
      output: "257c8bec-54c5-4db0-a287-c2be1266a842",
      selector: {
        type: "selected"
      },
      resource: "external_media",
      id: "6b238459-3962-4fcd-9779-43648cc323e9"
    },
    {
      output: "54bf5d5f-0415-4e9a-a1f4-936a83455574",
      selector: {
        type: "selected"
      },
      resource: "external_media",
      id: "f91edbf6-bc1c-4017-9e68-4790957faeec"
    }
  ]
};

var myCopy = null;

Tests:

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

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:

No previous run results

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

LLMs can make mistakes. Check important info.

**Benchmark Overview**

The provided benchmark measures the performance of two methods to create a deep copy of an object: Lodash's `cloneDeep` function and JSON serialization with parsing.

**Options Compared**

Two options are compared:

1. **Lodash cloneDeep**: This method uses the `cloneDeep` function from the Lodash library to recursively create a new, independent copy of the input object.
2. **JSON Stringify/parse**: This method serializes the original object to a JSON string using `JSON.stringify`, and then parses the resulting string back into an object using `JSON.parse`.

**Pros and Cons**

* **Lodash cloneDeep**:
	+ Pros:
		- Creates a deep, independent copy of the input object.
		- Handles complex data structures, such as arrays and objects with nested properties.
	+ Cons:
		- Requires the Lodash library to be loaded.
		- May have additional overhead due to the library's functionality.
* **JSON Stringify/parse**:
	+ Pros:
		- Does not require any external libraries.
		- Can be optimized for performance in some cases (e.g., using `JSON.stringify` with a replacer function).
	+ Cons:
		- May not handle complex data structures as well as Lodash cloneDeep.
		- Can lead to performance issues if the object being cloned is very large.

**Library and Purpose**

* **Lodash**: A JavaScript utility library that provides a wide range of functions for common tasks, such as array manipulation, string manipulation, and more. The `cloneDeep` function is specifically designed to create deep copies of objects.

**Special JS Feature or Syntax**

None mentioned in this benchmark.

**Other Considerations**

* When working with large data structures, Lodash cloneDeep may be a better choice due to its ability to handle complex nested properties.
* If performance is a top priority and the object being cloned is relatively small, JSON Stringify/parse may be a more suitable option.
* The use of `JSON.stringify` and `JSON.parse` can introduce additional overhead compared to using Lodash cloneDeep.

**Alternatives**

Other alternatives for deep copying objects include:

1. **Array.prototype.slice()**: Creates a shallow copy of an array by returning a new array with references to the same elements as the original.
2. **Object.assign()**: Creates a shallow copy of an object by merging properties from multiple sources into a new object.
3. **Array.from() and Object.fromEntries()**: Can be used to create a deep copy of arrays and objects, respectively.

However, these alternatives may not handle complex data structures as well as Lodash cloneDeep or JSON Stringify/parse.

Related benchmarks:

Lodash cloneDeep vs JSON Stringify/parse (version: 0)

Comparing performance of: Lodash cloneDeep vs Json clone

Created: 3 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):