Let's break down the benchmark and explain what's being tested, compared, and the pros and cons of each approach.

Benchmark Overview

The benchmark compares three approaches to filter an array in JavaScript:

1. _.filter (Lodash)
2. _.without (Lodash)
3. array.filter (native JavaScript)

Comparison of Approaches

1. Lodash _.filter

• Purpose: Filter elements from an array based on a provided function.
• Code example: _.filter(arr, o => o !== 99999)
• Library: Lodash is a popular utility library for JavaScript.

Pros:

• Convenient and concise syntax
• Often provides additional features and optimizations out of the box (e.g., handling null/undefined values)

Cons:

• Adds extra overhead due to the library's dependencies and optimizations.
• May not be as efficient as native JavaScript for simple filtering operations.

2. Lodash _.without

• Purpose: Remove elements from an array by their presence in another array or value.
• Code example: _.without(arr, 99999)
• Library: Lodash is a popular utility library for JavaScript.

Pros:

• Similar to _.filter, but with a different approach and syntax.
• May be optimized differently than _.filter due to the underlying algorithm used.

Cons:

• Adds extra overhead due to the library's dependencies and optimizations, similar to _filter.

3. array.filter (native JavaScript)

• Purpose: Filter elements from an array based on a provided function.
• Code example: arr.filter(o => o !== 99999)
• No external libraries required.

Pros:

• Lightweight and efficient, with minimal overhead.
• Optimized for performance by being native to JavaScript.

Cons:

• Requires more verbose syntax compared to Lodash functions.
• May not provide additional features or optimizations out of the box.

Test Results

The latest benchmark results show that:

• _.without performed best with an average execution rate of 1153.4171142578125 executions per second on Firefox 119.
• array.filter performed closest to _.without, with an average execution rate of 1148.49462890625 executions per second on the same browser and device platform.

The results suggest that both Lodash functions provide similar performance, while the native JavaScript array.filter approach is slightly less efficient but still relatively fast.

Other Alternatives

For filtering arrays in JavaScript, other approaches exist:

• Using Array.prototype.filter() (native JavaScript): Similar to array.filter, but with a more concise syntax.
• Using filter() from underscore.js: Another utility library that provides an alternative implementation of the filtering algorithm.
• Implementing your own custom filtering function using a simple loop or recursive approach.

Keep in mind that performance differences between these approaches may vary depending on specific use cases and requirements.