Benchmark: native find vs lodash findIndex

HTML Preparation code:

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

Script Preparation code:

var users = [
  { 'user': 'joey',  'age': 28 },
  { 'user': 'ross',    'age': 31 },
  { 'user': 'chandler', 'age': 30 },
  { 'user': 'jessika', 'age': 21 },
  { 'user': 'amanda', 'age': 17 }
]

Tests:

Native find
users.find(u => u.age === 30)
_.findIndex
_.findIndex(users, u => u.age === 30)

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Native find
_.findIndex

Fastest: N/A

Slowest: N/A

Latest run results:

Run details: (Test run date: 3 years ago)

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/91.0.4472.124 Safari/537.36

Browser/OS: Chrome 91 on Windows

View result in a separate tab

Test name	Executions per second
Native find	15028701.0 Ops/sec
_.findIndex	4862544.5 Ops/sec

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

LLMs can make mistakes. Check important info.

I'll break down the provided benchmark and explain what's being tested, compared options, pros and cons of those approaches, and other considerations.

**Benchmark Overview**

The benchmark compares the performance of two functions: native `Array.prototype.findIndex` and Lodash's `_.findIndex`. The test case uses a JavaScript array `users` containing five objects with different properties.

**Options Compared**

Two options are being compared:

1. **Native `Array.prototype.findIndex`**: This is a built-in JavaScript method that finds the index of the first element in an array that satisfies a provided condition.
2. **Lodash's `_.findIndex`**: This is a utility function from the Lodash library that performs a similar operation as the native `findIndex`. It takes two arguments: the array to search and a callback function.

**Pros and Cons of Each Approach**

1. **Native `Array.prototype.findIndex`**:
	* Pros:
		+ Built-in, so no extra dependencies are required.
		+ Likely to be optimized for performance by the JavaScript engine.
	* Cons:
		+ May not provide the same level of control or flexibility as a custom implementation.
2. **Lodash's `_.findIndex`**:
	* Pros:
		+ Provides more control and flexibility over the search operation (e.g., allows for early returns, multiple conditions).
		+ Can be useful when working with complex data structures or edge cases.
	* Cons:
		+ Requires an external dependency (Lodash), which may add overhead.
		+ May not be optimized for performance by the JavaScript engine.

**Library Used: Lodash**

Lodash is a popular utility library for JavaScript that provides a wide range of functional programming helpers, including `_.findIndex`. It's often used to simplify code and improve readability, but in this benchmark, it's being used primarily for its search functionality.

**Other Considerations**

* **JS Feature/Syntax**: There are no special JS features or syntaxes being tested in this benchmark.
* **Device/Platform**: The benchmark is running on a desktop browser (Chrome 91) with Windows as the operating system. If you want to compare performance across different devices or platforms, you'll need to add additional test cases.

**Alternatives**

If you're looking for alternatives to Lodash's `_.findIndex`, here are some options:

* **Your own custom implementation**: You can implement a similar search function using native JavaScript methods (e.g., `Array.prototype.findIndex`).
* **Other utility libraries**: There are other utility libraries available that provide similar functionality, such as Ramda or Underscore.js.
* **Built-in JavaScript methods**: As mentioned earlier, you can use built-in JavaScript methods like `Array.prototype.findIndex`, `Array.prototype.some`, or `Array.prototype.every`.

Keep in mind that each of these alternatives will have its own pros and cons, and the best choice depends on your specific use case and requirements.

Related benchmarks:

native find vs lodash findIndex (version: 0)

Compare performance of native [].findIndex and _.findIndex

Comparing performance of: Native find vs _.findIndex

Created: 3 years ago by: Guest

Jump to the latest result

Native find

_.findIndex

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A

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