Benchmark: Lodash.js vs Native undefined

HTML Preparation code:

<script src="https://cdn.jsdelivr.net/npm/lodash@4.17.4/lodash.min.js"></script>

Script Preparation code:

var und = undefined;
var bool = true;
var element;

Tests:

Native
element = !!und && typeof bool === 'boolean';
Lodash.js
element = !_.isUndefined(und) && !_.isBoolean(bool);

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Native
Lodash.js

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/120.0.0.0 Safari/537.36

Browser/OS: Chrome 120 on Windows

View result in a separate tab

Test name	Executions per second
Native	9671417.0 Ops/sec
Lodash.js	5136405.5 Ops/sec

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

LLMs can make mistakes. Check important info.

Let's break down the benchmark and explain what's being tested.

**What is being tested?**

The provided JSON represents a JavaScript microbenchmark that compares two approaches:

1. **Native undefined**: This approach uses native JavaScript syntax to check if `undefined` is equal to `undefined`, and then checks if `typeof bool` is `'boolean'`.
2. **Lodash.js**: This approach uses the popular JavaScript utility library Lodash, specifically its `isUndefined` and `isBoolean` functions.

The benchmark tests which approach executes faster on a specific browser (Chrome 120) running on a desktop platform (Windows).

**Options compared**

In this case, there are only two options being compared:

* Native undefined
* Lodash.js

**Pros and Cons of each approach:**

1. **Native undefined**
	* Pros:
		+ Faster execution since it uses native JavaScript syntax that doesn't require a library.
		+ Less overhead since no additional library needs to be loaded.
	* Cons:
		+ May not work consistently across all browsers or environments, as the behavior of `undefined` and `typeof` can vary.
2. **Lodash.js**
	* Pros:
		+ More robust and consistent behavior across different browsers and environments, since it relies on the standard JavaScript library.
	* Cons:
		+ Slower execution due to the overhead of loading a separate library.

**Library used**

In this benchmark, Lodash is used. Lodash is a popular JavaScript utility library that provides various functions for tasks such as array manipulation, object manipulation, and more. In this case, it's specifically being used to check if `undefined` is equal to `undefined` and if `bool` is a boolean value.

**Special JS feature or syntax**

There are no special JavaScript features or syntax mentioned in the benchmark that require any additional explanation.

**Other alternatives**

If you're interested in exploring alternative approaches, here are some options:

* Using a different library like Moment.js for date manipulation
* Implementing custom functions for specific use cases
* Leveraging modern JavaScript features like optional chaining (`?.`) or nullish coalescing (`??`)
* Using a transpiler or compiler to optimize performance

Keep in mind that each alternative will have its own pros and cons, depending on the specific requirements of your project.

I hope this explanation helps!

Related benchmarks:

Lodash.js vs Native undefined (version: 0)

Comparing performance of: Native vs Lodash.js

Created: 2 years ago by: Registered User

Jump to the latest result

Native

Lodash.js

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

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