Benchmark: Lodash omit vs Native delete - Mantz

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:

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

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Native delete
Lodash omit and pick
Lodash omit

Fastest: N/A

Slowest: N/A

Latest run results:

Run details: (Test run date: one month ago)

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:149.0) Gecko/20100101 Firefox/149.0

Browser/OS: Firefox 149 on Mac OS X 10.15

View result in a separate tab

Test name	Executions per second
Native delete	26492514.0 Ops/sec
Lodash omit and pick	2734974.0 Ops/sec
Lodash omit	4636804.5 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's being tested.

**Benchmark Purpose:**
The purpose of this benchmark is to compare the performance of two approaches for removing a specific property from an object:

1. **Native `delete`**: Using the built-in JavaScript method `delete` to remove the property.
2. **Lodash `.omit()`**: Using the Lodash library's `.omit()` function to remove properties from an object.

**Test Cases:**
There are three test cases:

1. **Native delete**: This test case uses the native `delete` keyword to remove the `message` property from the `meta` object.
2. **Lodash omit and pick**: This test case uses Lodash's `.omit()` function to remove all properties except `message` from the `data` object, and then assigns the resulting object to a new variable called `result`. The test case also calls Lodash's `.pick()` function with the `'message'` key to extract only the `message` property from the original data object.
3. **Lodash omit**: This test case uses Lodash's `.omit()` function to remove all properties except `message` from the `data` object.

**Options Compared:**
The benchmark compares the performance of these two approaches:

* Native JavaScript `delete`
* Lodash `.omit()`

**Pros and Cons:**

* **Native JavaScript `delete`**:
	+ Pros: Fast, lightweight, and widely supported.
	+ Cons: Can only remove one property at a time, can be brittle if the object's structure changes.
* **Lodash `.omit()`**:
	+ Pros: Flexible, can remove multiple properties, and handles complex objects with ease.
	+ Cons: Adds dependency on Lodash library, may have performance overhead due to function call.

**Library:**
The Lodash library is used in this benchmark. Lodash provides a set of utility functions for working with JavaScript objects, arrays, and other data structures.

**Special JS Feature/Syntax:**
There's no special JavaScript feature or syntax being tested in this benchmark. The tests focus on the performance comparison between two approaches.

**Other Alternatives:**
If you're interested in alternative approaches to remove properties from an object, here are a few options:

* Using `Object.keys()` and `forEach()` to iterate over the object's keys and delete each property individually.
* Using a library like Lo-Dash (a variant of Lodash) or Underscore.js for more advanced object manipulation.

Keep in mind that these alternatives may have different performance characteristics and trade-offs compared to using native JavaScript methods or Lodash functions.

Related benchmarks:

Lodash omit vs Native delete - Mantz (version: 2)

Comparing performance of: Native delete vs Lodash omit and pick vs Lodash omit

Created: 6 years ago by: Registered User

Jump to the latest result

Native delete

Lodash omit and pick

Lodash omit

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

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