Benchmark: lodash.keys vs Object.keys

HTML Preparation code:

<script src="https://cdn.jsdelivr.net/lodash/4.16.0/lodash.min.js"></script>

Script Preparation code:

var value = {a: 30310, b: 100303, c: 3040494};

Tests:

lodash.keys
_.size(value)
native
Object.keys(value).length

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
lodash.keys
native

Fastest: N/A

Slowest: N/A

Latest run results:

No previous run results

This benchmark does not have any results yet. Be the first one to run it!

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

LLMs can make mistakes. Check important info.

Let's break down the provided benchmark definition and test cases to understand what is being tested.

**Benchmark Definition**

The benchmark measures the performance of two approaches:

1. **Lodash `keys` function**: Lodash is a popular JavaScript utility library that provides various functions for tasks like array manipulation, string processing, and more.
2. **Native `Object.keys` method**: This is the built-in method in JavaScript that returns an array of a given object's own enumerable property names.

**Options Compared**

The benchmark compares the performance of these two approaches:

* Lodash `keys` function
* Native `Object.keys` method

**Pros and Cons**

* **Lodash `keys` function**: Pros:
	+ Often faster than native methods for large objects, as it can leverage optimized C++ code.
	+ Provides additional features like preserving property order and handling nested objects.
	Cons:
	+ Adds an external library dependency, which may slow down benchmark execution due to overhead.
* **Native `Object.keys` method**: Pros:
	+ Faster startup time, as it doesn't require loading a library.
	Cons:
	+ May be slower for large objects compared to Lodash's optimized implementation.

**Library: Lodash**

Lodash is a popular JavaScript utility library that provides over 100 functions for tasks like array manipulation, string processing, and more. It's often used in production code due to its extensive functionality and performance. In this benchmark, the `keys` function is being tested specifically for its performance.

**Special JS Feature/ Syntax**

There doesn't seem to be any special JavaScript features or syntax used in this benchmark. The test cases focus solely on comparing the performance of the Lodash `keys` function versus the native `Object.keys` method.

**Benchmark Preparation Code and JSON**

The provided JSON contains:

* A **benchmark name**: "lodash.keys vs Object.keys"
* A **script preparation code**: This sets up a sample object (`value`) that is used in both benchmark cases.
* An **HTML preparation code**: This includes a link to the Lodash library, which is loaded before running the benchmarks.

**Latest Benchmark Results**

The latest results show:

* For the native `Object.keys` method: 10017280.0 executions per second
* For the Lodash `keys` function: 7302347.5 executions per second

This suggests that the native method is currently faster, but the difference might be due to various factors like system configuration or JavaScript engine optimizations.

**Other Alternatives**

If you want to compare this benchmark with other approaches, here are some alternatives:

* **Using `for...in` loop**: This would involve manually iterating over the object's properties using a loop, which can be slower than both Lodash and native methods.
* **Using a library like `fast-keys`**: Fast-Keys is another JavaScript library that provides an optimized implementation of the `keys` method. Its performance might be comparable to or better than Lodash's.
* **Native `Object.entries()` method**: This newer method (introduced in ECMAScript 2019) returns an array of a given object's own enumerable entries, which can also be used for benchmarking.

Keep in mind that each alternative has its pros and cons, and the best approach will depend on specific use cases and requirements.

Related benchmarks:

lodash.keys vs Object.keys (version: 0)

Comparing performance of: lodash.keys vs native

Created: 8 years ago by: Guest

Jump to the latest result

lodash.keys

native

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):