Benchmark: Lodash omit vs Native object destruction

HTML Preparation code:

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

Script Preparation code:

var object = { 'a': 1, 'b': '2', 'c': 3 };

Tests:

Native object desctruction
var { a, c, ...result2 } = object; return result2
Lodash omit
return _.omit(object, ['a', 'c']);

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Native object desctruction
Lodash omit

Fastest: N/A

Slowest: N/A

Latest run results:

Run details: (Test run date: 7 months ago)

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/18.5 Safari/605.1.15

Browser/OS: Safari 18 on Mac OS X 10.15.7

View result in a separate tab

Test name	Executions per second
Native object desctruction	40853924.0 Ops/sec
Lodash omit	7419271.0 Ops/sec

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

LLMs can make mistakes. Check important info.

**Benchmark Explanation**

The provided benchmark measures the performance difference between two approaches to achieve object destruction in JavaScript: native object destruction and using the Lodash library's `omit` function.

**Native Object Destruction**

In this approach, an object is created with three properties (`a`, `b`, and `c`) and then destructured using a syntax similar to ES6 destructuring. The resulting object without the unwanted properties (`result2`) is returned from the function. This approach relies on JavaScript's native syntax for object destruction.

**Pros of Native Object Destruction**

1. **Efficient**: Native object destruction is typically faster since it doesn't involve any additional library calls or overhead.
2. **Low Overhead**: The code required to implement this approach is minimal, with only a few lines needed to create the object and destructure it.

**Cons of Native Object Destruction**

1. **Limited Browser Support**: Older browsers may not support ES6 features like destructuring, which could result in slower performance or errors.
2. **Less Intuitive for Non-Experienced Developers**: While familiar to those with experience in JavaScript, this approach might seem less intuitive for developers without prior knowledge of object destruction.

**Lodash Omit**

In contrast, the Lodash library's `omit` function is used to achieve object destruction. This approach involves calling a separate library function and passing an array of keys to exclude from the original object.

**Pros of Lodash Omit**

1. **Wide Browser Support**: As a widely used library, Lodash is supported by most modern browsers.
2. **Easy to Use**: For developers familiar with the Lodash library, using `omit` can be straightforward and efficient.

**Cons of Lodash Omit**

1. **Additional Library Overhead**: Calling an external function introduces additional overhead compared to native object destruction.
2. **Less Efficient**: Since it involves a separate library call, this approach might be slower than native object destruction.

**Library Description - Lodash**

Lodash is a popular JavaScript utility library that provides various functions for tasks such as array manipulation, object modification, and more. The `omit` function specifically returns a new object with the specified keys removed from the original object.

**Other Considerations**

1. **ES6 Features**: This benchmark assumes familiarity with ES6 syntax like destructuring. If you're using older JavaScript versions or a different programming paradigm, this approach might not be feasible.
2. **Performance Variance Across Browsers**: As seen in the benchmark results, performance can vary significantly across browsers and devices.

**Alternatives to Native Object Destruction**

If native object destruction is not an option, other approaches could include:

1. Using `Object.assign()` with a new object that excludes unwanted properties.
2. Implementing a custom `delete` function for objects.
3. Utilizing libraries like Lodash or a similar utility library to perform object manipulation.

Keep in mind that these alternatives may have their own trade-offs in terms of efficiency, browser support, and overall performance.

Related benchmarks:

Lodash omit vs Native object destruction (version: 0)

Comparing performance of: Native object desctruction vs Lodash omit

Created: 5 years ago by: Guest

Jump to the latest result

Native object desctruction

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):