Benchmark: Lodash isEqual vs Native JS Equality

HTML Preparation code:

<script src="https://cdn.jsdelivr.net/npm/lodash@4.17.15/lodash.min.js"></script>

Script Preparation code:


var changes = { propertyName: { currentValue: "currentVal", previousValue: "previousVal" } };

Tests:

Lodash isEqual
_.isEqual(changes["propertyName"].currentValue, changes["propertyName"].previousValue)
JS equality
changes["propertyName"].currentValue === changes["propertyName"].previousValue
Lodash !isEqual
!(_.isEqual(changes["propertyName"].currentValue, changes["propertyName"].previousValue))
JS !equality
changes["propertyName"].currentValue !== changes["propertyName"].previousValue

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Lodash isEqual
JS equality
Lodash !isEqual
JS !equality

Fastest: N/A

Slowest: N/A

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

LLMs can make mistakes. Check important info.

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

**Overview**

The benchmark compares the performance of native JavaScript equality checks (`===` and `!==`) with those using the Lodash library, specifically for checking if two values are equal or not equal. The tests are designed to measure the execution speed of these equality checks.

**Benchmark Definition JSON**

The provided JSON defines a benchmark with four test cases:

1. **Lodash isEqual**: Tests the performance of `_isEqual` function from Lodash.
2. **JS equality**: Tests the native JavaScript `===` operator for equality checks.
3. **Lodash !isEqual**: Tests the performance of `!_isEqual` function from Lodash (note: this is not a standard Lodash method, it's likely a custom implementation).
4. **JS !equality**: Tests the native JavaScript `!==` operator for non-equality checks.

**Options Compared**

The benchmark compares two options:

1. Native JavaScript equality checks (`===` and `!==`)
2. Lodash library-based equality checks (`_isEqual` and `!_isEqual`)

**Pros and Cons of Each Approach**

* **Native JavaScript Equality Checks**:
	+ Pros: Typically faster, since there's no overhead from a library.
	+ Cons: May not be as readable or maintainable as alternative implementations.
* **Lodash Library-Based Equality Checks**:
	+ Pros: Can be more readable and maintainable, especially for complex equality checks.
	+ Cons: May incur performance overhead due to the library's execution.

**Library Used**

In this benchmark, Lodash is used for its `isEqual` function. The `_!isEqual` method is not a standard implementation, so it's likely a custom or modified version of the original function.

**Special JS Features/Syntax**

None mentioned in this specific benchmark. However, it's worth noting that some JavaScript features like ES6 modules, let/const functions, or async/await might be relevant when running benchmarks, as they can affect performance and code execution.

**Other Alternatives**

For similar benchmarks, you might want to explore other libraries or implementations for equality checks, such as:

* Underscore.js (e.g., `_ ===` function)
* Moment.js (for date comparisons)
* or custom implementations using `JSON.stringify()` or other built-in functions.

Keep in mind that the choice of implementation often depends on the specific use case and performance requirements.

Latest run results:

Run details: (Test run date: one year ago)

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/112.0.0.0 Safari/537.36

Browser/OS: Chrome 112 on Mac OS X 10.15.7

View result in a separate tab

Test name	Executions per second
Lodash isEqual	8053416.0 Ops/sec
JS equality	16501600.0 Ops/sec
Lodash !isEqual	8352803.0 Ops/sec
JS !equality	17111404.0 Ops/sec

Related benchmarks:

Lodash isEqual vs Native JS Equality (version: 0)

Comparing performance of: Lodash isEqual vs JS equality vs Lodash !isEqual vs JS !equality

Created: 4 years ago by: Guest

Jump to the latest result

Lodash isEqual

JS equality

Lodash !isEqual

JS !equality

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A

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