Benchmark: Native !!collection?.length wrapped vs Lodash's !isEmpty

HTML Preparation code:

<script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.11/lodash.core.min.js"></script>

Script Preparation code:

var collection1 = undefined
var collection2 = [1, 2, 3]

var isEmpty = _.isEmpty
var isEmptyN = function(c){return!(null===c||void 0===c?void 0:c.length)}

Tests:

native undefined
!isEmptyN(collection1)
isEmpty undefined
!isEmpty(collection1)
native array
!isEmptyN(collection2)
isEmpty array
!isEmpty(collection2)

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
native undefined
isEmpty undefined
native array
isEmpty array

Fastest: N/A

Slowest: N/A

Autogenerated LLM Summary (model llama3.2:3b, generated 25 days ago):

LLMs can make mistakes. Check important info.

Let's break down the benchmark and its test cases.

**What is being tested?**

The provided JSON represents a JavaScript microbenchmark that tests two approaches to check if an object is empty:

1. Using the `!isEmptyN` function, which checks if an object is null or undefined before attempting to access its length property.
2. Using Lodash's `!isEmpty` function, which takes an object as input and returns `true` if it's empty.

**Options being compared**

The two approaches are being compared in the following test cases:

* `native undefined`: Tests the native JavaScript way of checking if a variable is `undefined`.
* `isEmpty undefined`: Tests Lodash's `!isEmpty` function with an `undefined` input.
* `native array`: Tests the native JavaScript way of checking if an array is empty by accessing its `length` property directly.
* `isEmpty array`: Tests Lodash's `!isEmpty` function with an array as input.

**Pros and cons of each approach**

1. **Native JavaScript (`!isEmptyN`, `native undefined`, `native array`)**
	* Pros:
		+ No external dependencies (no additional libraries needed).
		+ Can be optimized by the browser or engine.
	* Cons:
		+ May not work as expected if the input object is very large or complex, due to potential performance issues with accessing the `length` property.
2. **Lodash's `!isEmpty` (`isEmpty undefined`, `isEmpty array`)**
	* Pros:
		+ Can handle edge cases more robustly (e.g., handling large objects).
		+ May be optimized by Lodash's internal algorithms.
	* Cons:
		+ Adds an external dependency (the Lodash library), which may impact performance or lead to compatibility issues.

**Library and its purpose**

The `lodash` library is a popular JavaScript utility library that provides a wide range of functions for tasks like array manipulation, string processing, and more. In this benchmark, Lodash's `!isEmpty` function is used to check if an object is empty, providing a concise and efficient way to handle this common use case.

**Special JS feature or syntax**

There doesn't appear to be any special JavaScript features or syntax being tested in this benchmark. The focus is on comparing two basic approaches to checking if an object is empty.

**Other alternatives**

If you were to rewrite this benchmark using a different approach, some alternative methods could include:

* Using the `!Object.keys()` method to check if an object is empty (similar to the native JavaScript approach).
* Implementing your own custom function for checking emptiness (e.g., `isEmptiness`).
* Using a library like Fastest.Exec or benchmark.js, which provide more comprehensive and flexible benchmarking capabilities.

Keep in mind that the choice of implementation depends on the specific requirements and constraints of your project.

Latest run results:

Run details: (Test run date: 4 years ago)

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/86.0.4240.183 Safari/537.36

Browser/OS: Chrome 86 on Windows

View result in a separate tab

Test name	Executions per second
native undefined	4705288.5 Ops/sec
isEmpty undefined	3787833.0 Ops/sec
native array	4275199.0 Ops/sec
isEmpty array	3684070.5 Ops/sec

Related benchmarks:

Native !!collection?.length wrapped vs Lodash's !isEmpty (version: 1)

Comparing performance of: native undefined vs isEmpty undefined vs native array vs isEmpty array

Created: 4 years ago by: Registered User

Jump to the latest result

native undefined

isEmpty undefined

native array

isEmpty array

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A

Autogenerated LLM Summary (model llama3.2:3b, generated 25 days ago):