Benchmark: Lodash omit vs Native delete

HTML Preparation code:

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

Script Preparation code:

data = {abf:'asd',message:'koko'}

Tests:

Lodash omit
const meta = _.omit(data, 'message')
Native delete
const meta = Object.assign({}, data); delete meta.message;

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Lodash omit
Native delete

Fastest: N/A

Slowest: N/A

Autogenerated LLM Summary (model llama3.2:3b, generated 24 days ago):

LLMs can make mistakes. Check important info.

I'd be happy to explain what's being tested in the provided JSON benchmark.

**What is being tested?**

The benchmark is testing two approaches for removing properties from an object: using Lodash's `omit` function and using native JavaScript's `delete` operator.

**Options compared:**

There are two options being compared:

1. **Lodash's `omit` function**: This function takes an object and a key as arguments, and returns a new object with the specified key removed.
2. **Native JavaScript's `delete` operator**: This operator is used to delete a property from an object.

**Pros and Cons of each approach:**

* **Lodash's `omit` function:**
	+ Pros:
		- Easy to use and understand, especially for developers familiar with Lodash.
		- Can be more convenient than using native JavaScript methods for simple cases.
	+ Cons:
		- May have a performance overhead due to the creation of a new object.
		- May not be as efficient as native JavaScript methods for large objects or complex operations.
* **Native JavaScript's `delete` operator:**
	+ Pros:
		- More efficient than using Lodash's `omit` function, especially for large objects or complex operations.
		- Does not create a new object, which can save memory.
	+ Cons:
		- Can be less convenient to use, especially for developers unfamiliar with native JavaScript methods.

**Library used:**

Lodash is a popular JavaScript library that provides various utility functions. In this case, Lodash's `omit` function is being tested.

**Special JS feature or syntax:**

None mentioned in the provided JSON benchmark.

**Benchmark preparation code and HTML:**

The script preparation code sets up an object `data` with two properties: `abf` and `message`. The HTML preparation code includes a link to include Lodash's JavaScript file, which makes it available for use in the tests.

**Other alternatives:**

If you wanted to test other approaches, you could consider:

1. Using a different library or utility function (e.g., jQuery's `.delete()` method).
2. Implementing your own `omit` function using native JavaScript methods.
3. Testing multiple browsers or environments to see how the performance of each approach varies.

Keep in mind that these alternatives would require additional code changes and modifications to the benchmark setup.

The latest benchmark results show that the Native delete operator performs better than Lodash's `omit` function, with a significantly higher number of executions per second on Firefox 120.

Latest run results:

Run details: (Test run date: 11 months ago)

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:120.0) Gecko/20100101 Firefox/120.0

Browser/OS: Firefox 120 on Windows

View result in a separate tab

Test name	Executions per second
Lodash omit	2724508.5 Ops/sec
Native delete	17203348.0 Ops/sec

Related benchmarks:

Lodash omit vs Native delete (version: 0)

Comparing performance of: Lodash omit vs Native delete

Created: 5 years ago by: Guest

Jump to the latest result

Lodash omit

Native delete

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A

Autogenerated LLM Summary (model llama3.2:3b, generated 24 days ago):