Benchmark: Lodash Intersection vs. ES6 includes

HTML Preparation code:

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

Script Preparation code:

var first = [1, 3, 4, 5, 7];
var second = [2, 3, 5, 6];

Tests:

Javascript ES6 includes
first.filter(item => second.includes(item))
Lodash intersection
_.intersection(first, second)

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Javascript ES6 includes
Lodash intersection

Fastest: N/A

Slowest: N/A

Latest run results:

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

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Let's break down the benchmark and its components.

**Benchmark Definition**

The provided JSON represents a JavaScript microbenchmark, specifically measuring the performance difference between two approaches: using the `includes` method of arrays in ES6 (also known as "JavaScript includes") and using the `intersection` function from Lodash library.

**Options being compared**

Two options are being compared:

1. **ES6 `includes`**: This is a built-in JavaScript method that checks if an element is present in an array. It's a simple and efficient way to perform membership testing.
2. **Lodash `intersection`**: This function takes two arrays as input and returns a new array containing the elements that are common to both arrays. Lodash is a utility library for JavaScript that provides a wide range of functions, including this specific intersection function.

**Pros and cons**

Here's a brief overview of the pros and cons of each approach:

* **ES6 `includes`**:
	+ Pros: Fast, simple, and widely supported by modern browsers.
	+ Cons: May not work correctly for sparse arrays or arrays with holes (i.e., missing elements).
* **Lodash `intersection`**:
	+ Pros: More robust and reliable than ES6 `includes`, handling edge cases like sparse arrays or arrays with holes. Also provides additional functionality, such as returning the intersection of multiple arrays.
	+ Cons: Requires an external library (Lodash), which may increase bundle size and loading times.

**Library usage**

The Lodash library is being used for its `intersection` function. Lodash is a popular utility library that provides a wide range of functions for tasks like array manipulation, object manipulation, and more. In this benchmark, the `intersection` function is used to perform set intersection on two arrays.

**Special JavaScript feature or syntax**

This benchmark uses ES6 features, specifically the `includes` method and template literals (e.g., `"var first = [1, 3, 4, 5, 7];"`). While not specific to JavaScript, these features are widely supported by modern browsers and are commonly used in web development.

**Other alternatives**

If you need an alternative to Lodash's `intersection` function, you could consider using other libraries or built-in methods:

* **Array.prototype.filter() + Array.prototype.includes()**: This approach can be used as a fallback if Lodash is not available.
* **Underscore.js' intersection()**: If you're already using Underscore.js, its `intersection()` function might be a suitable alternative to Lodash's.
* **Built-in set operations**: Some browsers support built-in set operations (e.g., `Set.prototype.intersection()`) that could potentially replace Lodash's `intersection` function.

Overall, the benchmark provides a simple and straightforward comparison of two approaches: using ES6 `includes` and Lodash `intersection`. By using an external library like Lodash, you can take advantage of its robust implementation of set intersection, while also considering alternative options for production environments.

Related benchmarks:

Lodash Intersection vs. ES6 includes (version: 1)

Comparing performance of: Javascript ES6 includes vs Lodash intersection

Created: 5 years ago by: Registered User

Jump to the latest result

Javascript ES6 includes

Lodash intersection

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

No previous run results

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