Let's break down the provided benchmark and explain what is tested, compared options, pros and cons, and other considerations.

Benchmark Overview

MeasureThat.net is a website where users can create and run JavaScript microbenchmarks to compare different approaches. The provided benchmark compares two ways of finding an object in an array: using the find method without any additional library (built-in JavaScript) versus using the _ variable from the Lodash library.

Options Compared

Two options are compared:

1. Built-in find method: This is a standard JavaScript method that searches for an element with a given condition in an array.
2. Lodash _find function: Lodash is a popular JavaScript utility library that provides various functions, including _find, which performs the same operation as the built-in find method.

Pros and Cons

• Built-in find method:
  • Pros: Native JavaScript implementation, simple to use.
  • Cons: May not be optimized for performance or have additional features like Lodash.
• Lodash _find function:
  • Pros: Can be faster than the built-in find method due to optimization, and provides additional functionality (e.g., support for promises).
  • Cons: Requires an external library, may add overhead due to HTTP request or bundle size.

Library Used

In this benchmark, Lodash is used. Specifically, it's version 4.17.5. The _ variable from Lodash is used to invoke the _find function. The purpose of Lodash is to provide a set of reusable functions that make common programming tasks easier and more efficient.

Special JS Features or Syntax

There are no special JavaScript features or syntax mentioned in this benchmark. Both examples use standard JavaScript syntax for defining arrays, variables, and conditional statements.

Other Considerations

• Performance overhead: The Lodash library can introduce performance overhead due to HTTP requests or bundle size. However, in this specific benchmark, the Lodash _find function might be faster than the built-in find method.
• Feature parity: If you don't use Lodash or similar libraries, you'll need to implement the _find functionality yourself, which can add development overhead and complexity.

Alternatives

If you don't want to use an external library like Lodash, you could:

1. Implement your own _find function using a standard JavaScript for loop or other methods.
2. Use another library that provides similar functionality, such as the lodash-es version (ES6+ compatible) or the underscore library.

Keep in mind that alternatives might not offer the same level of optimization and performance as Lodash's _find function.