Benchmark: Lodash.isEqual vs JSON.stringify Equality Bench mark

HTML Preparation code:

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

Script Preparation code:

window.foo = ['cat', 'dog', 'bird'];
window.bar = ['cat', 'dog', 'bird'];

Tests:

_.isEqual
_.isEqual(window.foo, window.bar)
JSON.stringify
JSON.stringify(window.foo) === "[\"cat\",\"dog\",\"bird\"]"

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
_.isEqual
JSON.stringify

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 the explanation of the provided JSON benchmark.

**What is being tested?**

The benchmark tests the performance difference between two approaches for comparing equality: using Lodash's `isEqual` function and using `JSON.stringify`. The test cases compare the performance of these two approaches on an array of strings.

**Options compared**

There are two options being compared:

1. **Lodash's `isEqual` function**: This is a utility function from the Lodash library that checks if two values are equal, considering all properties and their values.
2. **JSON.stringify Equality**: This approach uses the `JSON.stringify` method to serialize both arrays into a string representation and then compares these strings for equality.

**Pros and Cons of each approach:**

1. **Lodash's `isEqual` function**:
	* Pros:
		+ More robust and flexible, considering all properties and their values.
		+ Can handle complex data structures like objects and nested arrays.
	* Cons:
		+ May be slower due to its additional checks and handling of complex data structures.
		+ Requires the Lodash library to be included in the test environment.
2. **JSON.stringify Equality**:
	* Pros:
		+ Simple and lightweight, with minimal overhead.
		+ No external dependencies required.
	* Cons:
		+ May not work correctly for all types of data structures or values (e.g., non-serializable objects).
		+ Can lead to false positives or negatives if the string representations are not accurately compared.

**Library and its purpose**

The Lodash library is a popular utility library for JavaScript that provides a wide range of functions for tasks like array manipulation, object creation, and more. In this benchmark, `isEqual` is used to compare two arrays for equality, considering all properties and their values.

**Special JS feature or syntax (not applicable in this case)**

There are no special JavaScript features or syntax being tested or utilized in this benchmark.

**Other alternatives**

Some alternative approaches for comparing array equality could include:

1. **Array.prototype.every()**: This method iterates over the elements of an array and returns `true` if all elements pass a test.
2. **Array.prototype.some()**: Similar to `every()`, but returns `true` as soon as at least one element passes the test.

These alternatives may offer different trade-offs in terms of performance, readability, and maintainability compared to using Lodash's `isEqual` function or JSON.stringify Equality.

Related benchmarks:

Lodash.isEqual vs JSON.stringify Equality Bench mark (version: 0)

Test on isEqual performance

Comparing performance of: _.isEqual vs JSON.stringify

Created: 5 years ago by: Guest

Jump to the latest result

_.isEqual

JSON.stringify

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):