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

Object.keys

2.7M/s

Lodash isEmpty

2.2M/s

View exact numbers

Test name	Executions per second
✓ Object.keys	2,717,103 Ops/sec
Lodash isEmpty	2,200,688 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.

Object.keys vs loadash isEmpty (version: 0)

Comparing performance of: `Lodash isEmpty vs Object.keys`

Created: 2 years ago by: Guest

Go 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):

Object.keys vs loadash isEmpty (version: 0)

Comparing performance of: Lodash isEmpty vs Object.keys

Created: 2 years ago by: Guest

Go 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):

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Comparing performance of: `Lodash isEmpty vs Object.keys`