Benchmark: Lodash omit vs Native delete - Ankur 2

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',
   _id: '{{objectId()}}',
    index: '{{index()}}',
    guid: '{{guid()}}',
    isActive: '{{bool()}}',
    balance: '{{floating(1000, 4000, 2, "$0,0.00")}}',
    picture: 'http://placehold.it/32x32',
    age: '{{integer(20, 40)}}',
    eyeColor: '{{random("blue", "brown", "green")}}',
    name: '{{firstName()}} {{surname()}}',
    gender: '{{gender()}}',
    company: '{{company().toUpperCase()}}',
    email: '{{email()}}',
    phone: '+1 {{phone()}}',
    address: '{{integer(100, 999)}} {{street()}}, {{city()}}, {{state()}}, {{integer(100, 10000)}}',
    about: '{{lorem(1, "paragraphs")}}',
    registered: '{{date(new Date(2014, 0, 1), new Date(), "YYYY-MM-ddThh:mm:ss Z")}}',
    latitude: '{{floating(-90.000001, 90)}}',
    longitude: '{{floating(-180.000001, 180)}}'
}

keysToOmit = ['longitude', 'gender', 'guid', 'abf']

Tests:

Native delete
Object.keys(data).forEach((key) => { keysToOmit.includes(key) && delete data[key]; }); return { data }
Lodash omit
return { data: _.omit(data, keysToOmit) }
ES6 Destructure
var {longitude, gender, guid, abf, ...rest} = data return { data: rest }

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Native delete
Lodash omit
ES6 Destructure

Fastest: N/A

Slowest: N/A

Latest run results:

Run details: (Test run date: 4 years ago)

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_4) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/13.1 Safari/605.1.15

Browser/OS: Safari 13 on Mac OS X 10.15.4

View result in a separate tab

Test name	Executions per second
Native delete	341682.9 Ops/sec
Lodash omit	276979.1 Ops/sec
ES6 Destructure	338724.3 Ops/sec

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

LLMs can make mistakes. Check important info.

Let's break down the provided benchmark and explain what's being tested, compared, and their pros and cons.

**Benchmark Definition**

The benchmark is comparing three approaches to remove specific keys from an object:

1. **Native delete**: Using the `delete` operator to remove keys from the object.
2. **Lodash omit**: Utilizing the `omit` function from the Lodash library to remove keys from the object.
3. **ES6 Destructure**: Using destructuring assignment to extract values from an object and ignore unwanted keys.

**Options being compared**

* **Native delete**: This approach uses the built-in `delete` operator to remove keys from the object. It's a simple and straightforward way to achieve this, but it may not be as efficient or safe as other methods.
* **Lodash omit**: Lodash provides an optimized implementation of the `omit` function, which is designed to be fast and efficient. This approach leverages the library's expertise in handling complex data manipulation tasks.
* **ES6 Destructure**: This approach uses a modern JavaScript feature (destructuring assignment) to extract values from the object and ignore unwanted keys. While it's a concise way to achieve this, it may not be as widely supported or familiar to all developers.

**Pros and Cons of each approach**

* **Native delete**:
	+ Pros: Simple, efficient, and widely supported.
	+ Cons: May not handle complex cases (e.g., nested objects) well. Can lead to unexpected behavior if used incorrectly.
* **Lodash omit**:
	+ Pros: Optimized implementation, handles complex cases efficiently, and provides a robust API for data manipulation tasks.
	+ Cons: Requires including an additional library (Lodash), which may add overhead for some use cases.
* **ES6 Destructure**:
	+ Pros: Concise, modern, and widely supported. Can be a good choice when working with simple objects.
	+ Cons: May not handle complex cases well, and the syntax can be unfamiliar to older developers.

**Library: Lodash**

Lodash is a popular JavaScript library that provides a comprehensive set of utilities for data manipulation, functional programming, and more. The `omit` function is one of its most useful tools for removing specific keys from objects. In this benchmark, Lodash is used as a third-party library to provide an optimized implementation of the `omit` function.

**Special JS feature: Destructuring assignment**

Destructuring assignment is a modern JavaScript feature introduced in ECMAScript 2015 (ES6). It allows developers to extract values from objects and arrays using a concise syntax. In this benchmark, destructuring assignment is used as an alternative approach to removing unwanted keys from the object.

**Other alternatives**

For those who may not be familiar with Lodash or destructuring assignment, here are some additional approaches that could be considered:

* **Using `for...in` loop**: An older approach that iterates over the object's properties using a `for...in` loop and removes unwanted keys manually.
* **Using `Object.keys()` and `forEach()`**: Another older approach that uses `Object.keys()` to get an array of property names, then iterates over the array using `forEach()` and removes unwanted keys.

These alternatives may not be as efficient or concise as the approaches used in this benchmark but can still be viable options depending on the specific use case.

Related benchmarks:

Lodash omit vs Native delete - Ankur 2 (version: 0)

Comparing performance of: Native delete vs Lodash omit vs ES6 Destructure

Created: 4 years ago by: Registered User

Jump to the latest result

Native delete

Lodash omit

ES6 Destructure

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A

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