Benchmark: lodash equal - MeasureThat.net

HTML Preparation code:

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

Script Preparation code:

// 1 level deep
window.a = true;
window.b = false;

Tests:

_.isEqual Level 1
_.isEqual(window.a, window.b)
=== Level 1
window.a === window.b

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
_.isEqual Level 1
=== Level 1

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 dive into explaining the benchmark.

**What is being tested?**

The benchmark measures the performance difference between two ways to test for equality between two primitive values in JavaScript: using the `===` operator and using the `_.isEqual()` function from the Lodash library.

**Options compared:**

1. **`.isEqual(window.a, window.b)`**: This option uses the Lodash `isEqual` function to compare the values of `window.a` and `window.b`.
2. **`window.a === window.b`**: This option uses the traditional `===` operator to compare the values of `window.a` and `window.b`.

**Pros and Cons:**

* Using `.isEqual(window.a, window.b)`:
	+ Pros:
		- May be more readable for developers familiar with Lodash.
		- Can handle complex objects by default (i.e., not just primitive types).
	+ Cons:
		- May have overhead due to the function call and potential optimization issues in some browsers.
* Using `window.a === window.b`:
	+ Pros:
		- Typically faster, as it's a simple operator comparison.
		- Often optimized by modern JavaScript engines.
	+ Cons:
		- Less readable for developers unfamiliar with the `===` operator.
		- Does not handle complex objects.

**Library used:**

The Lodash library is being used to provide an implementation of the `isEqual` function, which can handle comparing values based on their type, value, and structure. The `isEqual` function returns a boolean indicating whether the two values are equal.

**Special JavaScript feature or syntax:**

There doesn't appear to be any special JavaScript features or syntax being tested in this benchmark.

**Other alternatives:**

If you wanted to add more test cases, you could consider comparing other equality checks, such as:

* Using `Object.is()` (a built-in JavaScript function introduced in ECMAScript 2015)
* Comparing using a custom implementation (e.g., a simple loop-based comparison)

Keep in mind that the performance difference between these alternatives may be negligible or browser-dependent.

**Benchmark preparation code:**

The script preparation code is setting up two variables, `window.a` and `window.b`, with values of `true` and `false`, respectively. This setup allows for easy testing of equality comparisons.

**Individual test cases:**

Each test case measures the performance of a specific equality check:

* `_.isEqual(window.a, window.b)` tests the Lodash implementation.
* `window.a === window.b` tests the traditional `===` operator.

The benchmark runs these two test cases and reports their results.

Related benchmarks:

lodash equal (version: 0)

primitive equality test

Comparing performance of: _.isEqual Level 1 vs === Level 1

Created: 6 years ago by: Guest

Jump to the latest result

_.isEqual Level 1

=== Level 1

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):