Benchmark: Object.keys vs loadash isEmpty

HTML Preparation code:

<script src="https://cdn.jsdelivr.net/npm/lodash@4.17.20/lodash.min.js"></script>

Script Preparation code:

var sampleObject = {test: 1}

Tests:

Lodash isEmpty
isEmpty = _.isEmpty(sampleObject);
Object.keys
isEmpty = Object.keys(sampleObject).length === 0;

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Lodash isEmpty
Object.keys

Fastest: N/A

Slowest: N/A

Latest run results:

Run details: (Test run date: 2 years ago)

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/123.0.0.0 Safari/537.36

Browser/OS: Chrome 123 on Windows

View result in a separate tab

Test name	Executions per second
Lodash isEmpty	2200688.5 Ops/sec
Object.keys	2717102.8 Ops/sec

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

LLMs can make mistakes. Check important info.

I'd be happy to explain the benchmark and its results.

**Benchmark Overview**

The benchmark is designed to compare two approaches for checking if an object has no properties (i.e., an empty object): using the `Object.keys` method or the `lodash.isEmpty` function. The benchmark creates a sample object with a single property, "test", which is set to 1.

**Options Compared**

Two options are compared:

1. **Object.keys**: This approach uses the built-in `Object.keys()` method to get an array of the object's own enumerable properties. It then checks if the length of this array is 0.
2. **Lodash isEmpty**: This approach uses the `lodash.isEmpty` function, which takes an object as input and returns a boolean value indicating whether the object has any properties.

**Pros and Cons**

Both approaches have their pros and cons:

* **Object.keys**:
	+ Pros: This method is native to JavaScript and does not require any additional libraries or dependencies.
	+ Cons: It may be slower than using `lodash.isEmpty` because it involves calling a built-in function that may be optimized for performance, but still requires an array lookup and comparison.
* **Lodash isEmpty**:
	+ Pros: This method is likely to be faster than the `Object.keys` approach because it uses a specialized implementation in the `lodash` library that can take advantage of various optimizations. Additionally, it is often used in production code, so its performance characteristics may be better understood by developers.
	+ Cons: It requires including an additional library (`lodash`) which may add overhead to the benchmark.

**Library and Purpose**

The `lodash` library is a popular JavaScript utility library that provides a wide range of functions for tasks such as array manipulation, object transformation, and more. The `isEmpty` function is part of this library, and its purpose is to take an object (or any other type of value) as input and return a boolean value indicating whether the input has no properties.

**Special JS Feature/Syntax**

None are mentioned in the benchmark definition, so I won't elaborate on any special JavaScript features or syntax used in this benchmark.

**Other Alternatives**

If you wanted to test alternative approaches for checking if an object has no properties, some possible alternatives could include:

* Using the `Object.prototype.toString()` method and checking if the result is "[object Object]" followed by a space, indicating that it's an empty object.
* Using a library like `ramda` or `es6-object-assign` that provides specialized functions for working with objects.

However, these alternatives are not mentioned in the benchmark definition, and may require additional setup and configuration to be relevant.

Related benchmarks:

Object.keys vs loadash isEmpty (version: 0)

Comparing performance of: Lodash isEmpty vs Object.keys

Created: 2 years ago by: Guest

Jump to the latest result

Lodash isEmpty

Object.keys

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

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