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: one year ago)

User agent: Mozilla/5.0 (X11; Linux x86_64; rv:137.0) Gecko/20100101 Firefox/137.0

Browser/OS: Firefox 137 on Linux

View result in a separate tab

Native find

178.8M/s

_.findIndex

24.8M/s

View exact numbers

Test name	Executions per second
✓ Native find	178,786,912 Ops/sec
_.findIndex	24,848,544 Ops/sec

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

native find vs lodash findIndex (version: 0)

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

Comparing performance of: `Native find vs _.findIndex`

Created: 5 years ago by: Guest

Go to the latest result

Native find

_.findIndex

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

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

native find vs lodash findIndex (version: 0)

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

Comparing performance of: Native find vs _.findIndex

Created: 5 years ago by: Guest

Go to the latest result

Native find

_.findIndex

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

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

Related benchmarks

Comparing performance of: `Native find vs _.findIndex`