Benchmark: Lodash merge vs deepmerge lksafkmasldsa

HTML Preparation code:


<script src='https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.5/lodash.min.js'></script>
<script src='https://unpkg.com/deepmerge@3.2.0/dist/umd.js'></script>

Tests:

lodash merge
var a = { a: 'oh', b: 'my', c: { a: 'a', b: { c: 'c' } } }; var b = { c: { b: { d: 'a' }, c: { d: 'd' } } }; var c = _.merge({}, a, b);
deepmerge
var a = { a: 'oh', b: 'my', c: { a: 'a', b: { c: 'c' } } }; var b = { c: { b: { d: 'a' }, c: { d: 'd' } } }; var c = deepmerge({}, a, b);

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
lodash merge
deepmerge

Fastest: N/A

Slowest: N/A

Latest run results:

Run details: (Test run date: 2 years ago)

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/112.0.0.0 Whale/3.20.182.14 Safari/537.36

Browser/OS: Chrome 112 on Mac OS X 10.15.7

View result in a separate tab

Test name	Executions per second
lodash merge	434274.1 Ops/sec
deepmerge	2545719.8 Ops/sec

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 explain what is being tested, compared, and their pros and cons.

**What is being tested?**

The benchmark compares the performance of two JavaScript libraries: Lodash (`_.merge`) and DeepMerge (`deepmerge`). Both libraries are used to merge two objects together.

**Options compared:**

1. **Lodash (`_.merge`)**:
	* Pros:
		+ Widely used and well-established library.
		+ Simple and easy to use.
	* Cons:
		+ May have a slower performance due to its complexity.
2. **DeepMerge (`deepmerge`)**:
	* Pros:
		+ Optimized for deep object merging, which can be beneficial in certain scenarios.
		+ May have better performance than Lodash.
	* Cons:
		+ Less widely used and less established than Lodash.

**Other considerations:**

1. **Library usage**: Both libraries use different approaches to merge objects. Lodash uses a recursive approach, while DeepMerge uses a iterative approach. This difference in approach can affect the performance and complexity of the merged object.
2. **Performance**: The benchmark measures the execution speed of both libraries for large object merges. The results will show which library performs better.

**Library explanations:**

1. **Lodash (`_.merge`)**:
	* Lodash is a popular JavaScript utility library developed by Isaac Zeldman in 2010.
	* Its primary purpose is to provide functional programming helpers and utility functions for tasks like array manipulation, object merging, and more.
2. **DeepMerge (`deepmerge`)**:
	* DeepMerge is a lightweight JavaScript library specifically designed for deep object merging.
	* It provides an efficient and optimized way to merge objects, especially useful when dealing with nested structures.

**Special JS feature or syntax:**

None mentioned in the benchmark definition.

**Alternatives:**

1. **Object.assign()**: A built-in JavaScript method used for shallow object assignment.
2. **Recursive functions**: Other libraries or custom implementations that use recursive approaches for merging objects.
3. **Other deep merging libraries**: Such as merge-deep, jsondiffpatch, and more.

Keep in mind that the benchmark's results may vary depending on specific use cases and requirements.

Related benchmarks:

Lodash merge vs deepmerge lksafkmasldsa (version: 0)

Comparing performance of: lodash merge vs deepmerge

Created: 2 years ago by: Guest

Jump to the latest result

lodash merge

deepmerge

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

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