Benchmark: Lodash vs Native JS: keys

HTML Preparation code:

<script src="https://cdn.jsdelivr.net/npm/lodash@4.17.15/lodash.min.js"></script>

Script Preparation code:

var data = {};
for(var i=0; i<10; i++){
  data[`key${i}`] = i;
}

Tests:

Lodash _.keys()
_.keys(data)
Native JS Object.keys()
Object.keys(data)

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Lodash _.keys()
Native JS Object.keys()

Fastest: N/A

Slowest: N/A

Autogenerated LLM Summary (model llama3.2:3b, generated 29 days ago):

LLMs can make mistakes. Check important info.

Let's break down what's being tested in the provided benchmark.

**What is being tested?**

The benchmark compares the performance of two approaches to get an array of keys from an object:

1. **Native JavaScript: `Object.keys()`**: This method returns an array of a given object's own enumerable property names.
2. **Lodash library: `_keys()` function**: Lodash is a utility library for JavaScript that provides various functions, including `_keys()`, to simplify common tasks.

**Options being compared**

The benchmark tests two options:

* Native JavaScript's `Object.keys()`
* Lodash's `_keys()` function

**Pros and Cons of each approach:**

1. **Native JavaScript: `Object.keys()`**
	* Pros:
		+ No additional dependencies or libraries needed.
		+ Fast and efficient, since it's a built-in method.
	* Cons:
		+ May not be as convenient or readable for all developers who aren't familiar with the method.
		+ Can be slower in some cases due to the need for parsing the object's properties.
2. **Lodash library: `_keys()` function**
	* Pros:
		+ Convenient and readable syntax for getting keys from an object.
		+ Might be faster in certain situations, as it can leverage browser optimizations or use caching mechanisms under the hood.
	* Cons:
		+ Requires including Lodash as a dependency in your project, which may add overhead to your bundle size.
		+ May have performance overhead due to the need for function calls and lookups.

**Other considerations:**

* The benchmark uses a simple object with 10 properties to test key retrieval. In real-world scenarios, you might encounter more complex objects or edge cases that could affect performance.
* The benchmark doesn't account for potential differences in caching behavior between native JavaScript and Lodash's `_keys()` function.

**Library description (Lodash):**

Lodash is a popular utility library for JavaScript that provides over 120 functions to simplify common tasks, such as array manipulation, object transformation, and more. The `_keys()` function is one of these utilities, designed to return an array of keys from a given object or map.

**Special JS feature or syntax: None mentioned**

The benchmark uses standard JavaScript syntax and doesn't introduce any special features or syntax that aren't widely supported by modern browsers.

**Alternatives:**

If you prefer not to use Lodash or Native JavaScript's `Object.keys()`, you could consider the following alternatives:

* Use a different library, such as `underscore.js` or `ramda`.
* Implement your own key retrieval logic using standard JavaScript.
* Consider using a more lightweight alternative, like `simple-js-obj-keys` (a small, lightweight library specifically designed for getting object keys).

Latest run results:

Run details: (Test run date: 5 years ago)

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/77.0.3865.90 Safari/537.36

Browser/OS: Chrome 77 on Mac OS X 10.14.6

View result in a separate tab

Test name	Executions per second
Lodash _.keys()	3764732.8 Ops/sec
Native JS Object.keys()	4358869.0 Ops/sec

Related benchmarks:

Lodash vs Native JS: keys (version: 0)

Comparison of _.keys and Object.keys()

Comparing performance of: Lodash _.keys() vs Native JS Object.keys()

Created: 5 years ago by: Guest

Jump to the latest result

Lodash _.keys()

Native JS Object.keys()

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A

Autogenerated LLM Summary (model llama3.2:3b, generated 29 days ago):