Benchmark: Lodash clone vs objecgt.assing

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 = _.clone(MyObject);
js spread
myCopy = { ... MyObject };
js assign
myCopy = Object.assign({}, MyObject);

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Lodash cloneDeep
js spread
js assign

Fastest: N/A

Slowest: N/A

Latest run results:

No previous run results

This benchmark does not have any results yet. Be the first one to run it!

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 microbenchmarks on MeasureThat.net.

**Benchmark Overview**

The benchmark tests three different approaches to creating a deep copy of an object in JavaScript:

1. Lodash `cloneDeep` method
2. Spread operator (`...`) with object literal syntax
3. `Object.assign()` method

**Options Compared**

These options are compared to measure their performance differences.

Pros and Cons:

* **Lodash `cloneDeep` method**: Pros:
	+ Widely supported and well-maintained library.
	+ Supports recursive cloning of complex objects.
	Cons:
	+ Adds external dependency (Lodash).
	+ May have overhead due to function call and object creation.
* **Spread operator (`...`) with object literal syntax**: Pros:
	+ Lightweight and efficient, as it only creates a new reference to the original object.
	+ No external dependencies required.
	Cons:
	+ Limited support for recursive cloning of complex objects (only works for shallow copies).
	+ May not be supported in older browsers or environments.
* **`Object.assign()` method**: Pros:
	+ Widely supported and built-in to most JavaScript engines.
	+ Supports recursive cloning of complex objects (using `Object.assign()` with an initial value of `{}`).
	Cons:
	+ May have overhead due to function call and object creation.

**Library: Lodash**

Lodash is a popular JavaScript utility library that provides a wide range of functions for various tasks, including cloning. The `cloneDeep` method is specifically designed to create deep copies of complex objects.

In the benchmark, the Lodash library is included via an external script tag (`<script src='https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.5/lodash.min.js'></script>`). This allows users to easily add this functionality to their test scripts without modifying them.

**Special JS Feature: Spread Operator (Rest Parameter)**

The spread operator is a feature introduced in ECMAScript 2015 (ES6) that allows creating new objects by spreading the properties of an existing object. In this benchmark, the spread operator is used with object literal syntax to create a shallow copy of the original object.

While not as powerful as `cloneDeep`, the spread operator provides a lightweight and efficient way to create copies of simple objects. However, it may not be suitable for more complex cloning scenarios.

**Other Alternatives**

If you're looking for alternative methods to clone objects in JavaScript, some other options include:

* Using `JSON.parse(JSON.stringify(obj))`: This method creates a deep copy by converting the object to a JSON string and then parsing it back into an object. However, this approach can be slow and may not work correctly with all types of objects.
* Implementing your own cloning algorithm using recursion or iteration: This approach provides full control over the cloning process but requires more effort and expertise.

Keep in mind that each of these alternatives has its pros and cons, and the choice ultimately depends on the specific requirements and constraints of your project.

Related benchmarks:

Lodash clone vs objecgt.assing (version: 0)

Comparing performance of: Lodash cloneDeep vs js spread vs js assign

Created: 7 years ago by: Guest

Jump to the latest result

Lodash cloneDeep

js spread

js assign

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):