Benchmark: Lodash.isEqual vs JSON.stringify Equality Comparison for Shallow Array of Strings CM-forked fixed

HTML Preparation code:

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

Script Preparation code:

window.foo = {
  a: 'cat',
  b: 'dog',
  c: {
    type: 'bird',
    name: {
      first: ['A', 'B'],
      second: 'C'
    },
    age: 3
  }
};
window.bar = {
  a: 'cat',
  b: 'dog',
  c: {
    type: 'bird',
    name: {
      first: ['A', 'B'],
      second: 'C'
    },
    age: 3
  }
};

Tests:

_.isEqual
_.isEqual(window.foo, window.bar)
JSON.stringify
JSON.stringify(window.foo) === JSON.stringify(window.bar)

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

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

LLMs can make mistakes. Check important info.

Let's dive into the world of JavaScript microbenchmarks!

**What is tested?**

The provided JSON represents two test cases:

1. `_.isEqual(window.foo, window.bar)`: This benchmark compares the equality of two objects, `window.foo` and `window.bar`, using Lodash's `isEqual` function.
2. `JSON.stringify(window.foo) === JSON.stringify(window.bar)` : This benchmark compares the stringification of two objects, `window.foo` and `window.bar`, using JavaScript's built-in `Stringify` method.

**Options compared**

In this case, only two options are being compared:

* Lodash's `isEqual`
* Built-in JavaScript `Stringify`

**Pros and cons of each approach:**

1. **Lodash's `isEqual`:**
	* Pros:
		+ Provides a more comprehensive comparison of objects, including nested structures.
		+ Can handle edge cases like arrays and dates.
	* Cons:
		+ Adds extra overhead due to the use of Lodash's implementation.
		+ May have slower performance compared to built-in methods.
2. **Built-in JavaScript `Stringify`:**
	* Pros:
		+ Faster performance since it's a native method.
		+ Easier to implement, as it relies on existing infrastructure.
	* Cons:
		+ Only compares the primitive values of objects (not nested structures).
		+ May not handle edge cases like arrays and dates correctly.

**Library and its purpose**

In this case, Lodash is used for its `isEqual` function, which provides a more comprehensive comparison of objects. Lodash's `isEqual` function is designed to recursively traverse object properties and compare their values, ensuring that nested structures are properly handled.

**Special JS feature or syntax (not present)**

There are no special JavaScript features or syntaxes being used in this benchmark.

**Other alternatives**

If you need a more comprehensive comparison of objects, other libraries like `json-stringify-safe` or `object-equality-checker` might be suitable alternatives. However, these libraries may add extra overhead due to their implementation.

For faster performance, using built-in JavaScript methods like `JSON.stringify` and implementing custom equality checks for nested structures might be a better approach.

Latest run results:

Run details: (Test run date: 7 months ago)

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/123.0.0.0 Safari/537.36

Browser/OS: Chrome 123 on Windows

View result in a separate tab

Test name	Executions per second
_.isEqual	476901.1 Ops/sec
JSON.stringify	649239.8 Ops/sec

Related benchmarks:

Lodash.isEqual vs JSON.stringify Equality Comparison for Shallow Array of Strings CM-forked fixed (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>

Experimental features:

Fastest: N/A

Slowest: N/A

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