Let's break down what's being tested in this benchmark.

Benchmark Overview

The test compares the performance of two approaches: using lodash (a popular JavaScript utility library) and the built-in Array.prototype.filter() method on native arrays.

Options Compared

The benchmark tests the following options:

1. Lodash: The _.filter() function from Lodash is used to filter an array.
2. Native Array: The built-in Array.prototype.filter() method is used to filter an array, without using any external library.

Pros and Cons of Each Approach

• Lodash:
  • Pros:
    • Often provides a simpler and more readable way to perform common tasks, like filtering arrays.
    • May be faster due to optimizations provided by the library's author.
  • Cons:
    • Adds an extra dependency to your project (the Lodash library).
    • May be overkill for simple use cases where native functionality is sufficient.
• Native Array:
  • Pros:
    • No additional dependencies or overhead.
    • Can be faster in some cases, since it uses native code and doesn't rely on a library's optimizations.
  • Cons:
    • Requires more verbose code to achieve the same result as Lodash.

Library Used

In this benchmark, lodash is used for its _.filter() function. Lodash is a utility library that provides a lot of functionality for common tasks, such as array manipulation, string manipulation, and object utilities. In this case, it's being used to simplify the filtering process by providing a concise and readable way to define the filter criteria.

Special JS Feature or Syntax

There isn't any special JavaScript feature or syntax being tested in this benchmark. The test focuses on comparing two different approaches for array filtering: using an external library versus native code.

Other Alternatives

If you don't want to use Lodash, there are other libraries and techniques that can be used for array filtering, such as:

• Other utility libraries like underscore or ramda.
• Simple recursive functions.
• Using map() and some() methods in combination.

However, keep in mind that the native Array.prototype.filter() method is often the best choice for simple use cases where readability and performance are important.