Benchmark: _.find() vs [].find()

HTML Preparation code:

<script src="https://cdn.jsdelivr.net/npm/lodash@4.17.21/lodash.min.js"></script>

Script Preparation code:

var array = [{
        name: 'lim',
        age: 26
    },
    {
        name: 'kim',
        age: 28
    },
    {
        name: 'choi',
        age: 32
    },
    {
        name: 'park',
        age: 21
    },
]

Tests:

Lodash - find
_.find(array, arr => arr.age < 28)
ES6 - find
array.find(arr => arr.age < 28)

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Lodash - find
ES6 - find

Fastest: N/A

Slowest: N/A

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

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Let's break down the provided benchmark and its test cases.

**Overview**

The benchmark compares the performance of two approaches: using Lodash's `find()` function versus using the native `Array.prototype.find()` method in ES6 (ECMAScript 2015) JavaScript. The goal is to determine which approach is faster.

**Lodash Library**

Lodash is a popular utility library for JavaScript that provides a wide range of helper functions for tasks like array manipulation, string trimming, and more. In this benchmark, Lodash's `find()` function is used to search for an element in the provided array based on a callback function.

**ES6 `Array.prototype.find()`**

The ES6 `Array.prototype.find()` method returns the first element in the array that satisfies the provided condition (i.e., the callback function). If no such element exists, it returns `undefined`.

**Benchmark Test Cases**

There are two test cases:

1. **Lodash - find**: This test case uses Lodash's `find()` function to search for an element in the provided array where the `age` property is less than 28.
2. **ES6 - find**: This test case uses the native `Array.prototype.find()` method to achieve the same result as above.

**Performance Comparison**

The benchmark measures the execution time of each approach on a single machine, using a specific browser (Chrome 116) and operating system (Mac OS X 10.15.7). The results show that:

* ES6 `Array.prototype.find()` is faster than Lodash's `find()`, with an execution rate of approximately 9:1.

**Pros and Cons**

**Lodash - find:**

Pros:

* Convenient and familiar API for developers who are already familiar with Lodash.
* May provide better error handling and edge case behavior, as it is designed to handle more complex scenarios.

Cons:

* Adding an extra dependency (Lodash) increases the complexity of the application and may not be desirable in all cases.
* May incur a performance overhead due to the indirection introduced by using a library function.

**ES6 `Array.prototype.find():**

Pros:

* Native implementation, which is optimized for performance.
* No additional dependencies or overhead.
* Can provide better cache behavior and locality of reference.

Cons:

* Requires knowledge of ES6 syntax and Array methods.
* May have different error handling and edge case behavior compared to Lodash's `find()`.

**Other Considerations**

When deciding between these two approaches, consider the following factors:

* Development time: If you're already familiar with Lodash, using its `find()` function might be faster. However, if you need to implement this functionality from scratch, using ES6 `Array.prototype.find()` is a better choice.
* Performance-critical applications: In high-performance applications where every microsecond counts, the native `Array.prototype.find()` method will likely provide better performance.
* Maintainability and readability: Lodash's `find()` function can be more readable and maintainable for developers who are not familiar with ES6 syntax or Array methods.

**Alternatives**

If you're looking for alternative approaches to find an element in an array, consider the following options:

* Using `forEach()` and checking a flag to determine if the element was found.
* Implementing a custom search algorithm using bit manipulation or other optimization techniques.
* Using a library like Ramda or Jest's `find()` function.

Ultimately, the choice between Lodash's `find()` and ES6 `Array.prototype.find()` depends on your specific requirements, performance constraints, and personal preference.

Related benchmarks:

_.find() vs [].find() (version: 0)

Lodash vs ES6 비교

Comparing performance of: Lodash - find vs ES6 - find

Created: 2 years ago by: Registered User

Jump to the latest result

Lodash - find

ES6 - find

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

No previous run results

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