Benchmark: lodash isEmpty vs enumerating object keys

HTML Preparation code:


<script src='https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.5/lodash.min.js'></script>

Script Preparation code:

window.items = [
  { id: 'a5', a: 1, b: 2 },
  { id: 'a3', a: 1, b: 2 },
  { id: 'a8', a: 1, b: 2 },
  { id: 'b1', a: 1, b: 2 },
  { id: 'ac0', a: 1, b: 2 },
  { id: 'a7', a: 1, b: 2 },
  { id: 'a0', a: 1, b: 2 },
  { id: 'a6', a: 1, b: 2 },
  { id: 'a5', a: 1, b: 2 },
  { id: 'a4', a: 1, b: 2 },
  { id: 'a3', a: 1, b: 2 },
  { id: 'a2', a: 1, b: 2 }
];

window.products = {
  a0: { x: 1, y: 1, z: 1, id: 'a0' },
  a1: { x: 1, y: 1, z: 1, id: 'a1' },
  a2: { x: 1, y: 1, z: 1, id: 'a2' },
  a3: { x: 1, y: 1, z: 1, id: 'a3' },
  a5: { x: 1, y: 1, z: 1, id: 'a5' },
  a7: { x: 1, y: 1, z: 1, id: 'a7' },
  a8: { x: 1, y: 1, z: 1, id: 'a8' },
  a9: { x: 1, y: 1, z: 1, id: 'a9' },
  a10: { x: 1, y: 1, z: 1, id: 'a10' },
  a11: { x: 1, y: 1, z: 1, id: 'a11' },
  a12: { x: 1, y: 1, z: 1, id: 'a12' },
  a13: { x: 1, y: 1, z: 1, id: 'a13' },
  a14: { x: 1, y: 1, z: 1, id: 'a14' },
  a15: { x: 1, y: 1, z: 1, id: 'a15' },
  a16: { x: 1, y: 1, z: 1, id: 'a16' }
};

Tests:

Lodash isempty
window.result = _(items) .map(item => item.id) .uniq() .map(id => products[id] || {}) .value() .filter(el => !_.isEmpty(el)); //console.log('result lodash:', result);
enumerated object keys
window.result = _(items) .map(item => item.id) .uniq() .map(id => products[id] || {}) .value() .filter(el => !!Object.keys(el).length); //console.log('result native:', result);

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Lodash isempty
enumerated object keys

Fastest: N/A

Slowest: N/A

Latest run results:

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

LLMs can make mistakes. Check important info.

Let's break down what's being tested in this benchmark.

**Overview**
The benchmark compares the performance of two approaches to check if an object is empty:

1. Using Lodash's `isEmpty` function
2. Enumerating object keys and checking if the resulting array has any elements

**Lodash `isEmpty` Function**
The Lodash `isEmpty` function takes an object as input and returns a boolean indicating whether the object is empty.

In this benchmark, the first test case uses Lodash's `isEmpty` function to check if the object is empty. The second test case does not use any custom implementation for checking if an object is empty; instead, it enumerates the object keys using the `Object.keys()` method and checks if the resulting array has any elements.

**Enumerating Object Keys**
The second test case uses a manual approach to check if an object is empty by enumerating its keys using `Object.keys()` and then checking if the resulting array has any elements. This approach requires iterating over the object's properties, which can be slower than using a specialized function like Lodash's `isEmpty`.

**Pros and Cons**

* **Lodash `isEmpty` Function**
	+ Pros:
		- Fast and efficient
		- Part of a popular and well-maintained library (Lodash)
	+ Cons:
		- Adds an external dependency (Lodash) to the benchmark
		- May not be as understandable for those without experience with Lodash or functional programming concepts
* **Enumerating Object Keys**
	+ Pros:
		- No external dependencies required
		- Can be understood by a wider audience
	+ Cons:
		- Slower than using a specialized function like Lodash's `isEmpty`
		- Requires manual implementation and maintenance

**Other Considerations**

* **Performance**: The benchmark measures the execution frequency per second, which indicates how efficient each approach is. In this case, the `enumerated object keys` test is slower.
* **Code Readability and Maintainability**: Using a specialized function like Lodash's `isEmpty` can make the code more readable and maintainable for developers familiar with the library. The manual implementation using `Object.keys()` may require more expertise and explanation.

**Alternatives**
If you were to reimplement this benchmark, consider the following alternatives:

1. Use a different library or framework that provides an efficient way to check if an object is empty.
2. Experiment with alternative approaches, such as using a custom function that iterates over the object's properties in a more efficient manner.
3. Measure performance using other metrics, such as average execution time or number of iterations.

Keep in mind that the choice of approach ultimately depends on your specific use case and requirements.

Related benchmarks:

lodash isEmpty vs enumerating object keys (version: 0)

Comparing performance of: Lodash isempty vs enumerated object keys

Created: 4 years ago by: Guest

Jump to the latest result

Lodash isempty

enumerated object keys

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):