Benchmark: Lodash (v4.17.15) isEqual test

HTML Preparation code:

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

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

Script Preparation code:

// 1 level deep
window.foo1 = { a: 1, b: 2, c: { a: 1, b: 2, c: { a: 1, b: 2 } } };
window.bar1 = { a: 1, b: 3, c: { a: 1, b: 2, c: { a: 1, b: 2 } } };

// 2 levels deep
window.foo2 = { a: 1, b: 2, c: { a: 1, b: 2, c: { a: 1, b: 2 } } };
window.bar2 = { a: 1, b: 2, c: { a: 1, b: 3, c: { a: 1, b: 2 } } };

// 3 levels deep
window.foo3 = { a: 1, b: 2, c: { a: 1, b: 2, c: { a: 1, b: 2 } } };
window.bar3 = { a: 1, b: 2, c: { a: 1, b: 2, c: { a: 1, b: 4 } } };

​x
 
// 1 level deepwindow.foo1 = { a: 1, b: 2, c: { a: 1, b: 2, c: { a: 1, b: 2 } } };window.bar1 = { a: 1, b: 3, c: { a: 1, b: 2, c: { a: 1, b: 2 } } };​// 2 levels deepwindow.foo2 = { a: 1, b: 2, c: { a: 1, b: 2, c: { a: 1, b: 2 } } };window.bar2 = { a: 1, b: 2, c: { a: 1, b: 3, c: { a: 1, b: 2 } } };​// 3 levels deepwindow.foo3 = { a: 1, b: 2, c: { a: 1, b: 2, c: { a: 1, b: 2 } } };window.bar3 = { a: 1, b: 2, c: { a: 1, b: 2, c: { a: 1, b: 4 } } };

Tests:

_.isEqual Level 1
_.isEqual(window.foo1, window.bar1)
_.isEqual(window.foo1, window.bar1)
JSON.stringify Level 1
JSON.stringify(window.foo1) === JSON.stringify(window.bar1);
JSON.stringify(window.foo1) === JSON.stringify(window.bar1);
_.isEqual Level 2
_.isEqual(window.foo2, window.bar2)
_.isEqual(window.foo2, window.bar2)
JSON.stringify Level 2
JSON.stringify(window.foo2) === JSON.stringify(window.bar2);
JSON.stringify(window.foo2) === JSON.stringify(window.bar2);
_.isEqual Level 3
_.isEqual(window.foo3, window.bar3)
_.isEqual(window.foo3, window.bar3)
JSON.stringify Level 3
JSON.stringify(window.foo3) === JSON.stringify(window.bar3);
JSON.stringify(window.foo3) === JSON.stringify(window.bar3);

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Experimental features:

Memory measurements supported only in Chrome.
For precise memory measurements Chrome must be launched with --enable-precise-memory-info flag.
More information: Monitoring JavaScript Memory

Test case name	Result
_.isEqual Level 1
JSON.stringify Level 1
_.isEqual Level 2
JSON.stringify Level 2
_.isEqual Level 3
JSON.stringify Level 3

Fastest: N/A

Slowest: N/A

Latest run results:

Run details: (Test run date: 5 years ago)

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_2) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/80.0.3987.122 Safari/537.36

Browser/OS: Chrome 80 on Mac OS X 10.15.2

View result in a separate tab

Test name	Executions per second
_.isEqual Level 1	835661.1 Ops/sec
JSON.stringify Level 1	395615.1 Ops/sec
_.isEqual Level 2	479152.8 Ops/sec
JSON.stringify Level 2	378538.2 Ops/sec
_.isEqual Level 3	350720.5 Ops/sec
JSON.stringify Level 3	385043.2 Ops/sec

Autogenerated LLM Summary (model llama3.2:3b, generated 6 months ago):

I'll break down the benchmark and explain what's being tested, compared, and their pros and cons.

Benchmark Overview

The benchmark measures the performance of Lodash's isEqual function in comparing two objects with different structures (1 level deep, 2 levels deep, and 3 levels deep). The test also includes comparisons using JSON stringification (JSON.stringify) to check if the same object is returned.

Test Cases

There are six test cases:

_.isEqual(window.foo1, window.bar1): Compares two objects with a single level of nested structure.
JSON.stringify(window.foo1) === JSON.stringify(window.bar1): Uses JSON stringification to compare the two objects.
_.isEqual(window.foo2, window.bar2): Compares two objects with two levels of nested structure.
JSON.stringify(window.foo2) === JSON.stringify(window.bar2): Uses JSON stringification to compare the two objects.
_.isEqual(window.foo3, window.bar3): Compares two objects with three levels of nested structure.
JSON.stringify(window.foo3) === JSON.stringify(window.bar3): Uses JSON stringification to compare the two objects.

Comparison Methods

The comparison methods used in the test cases are:

Lodash's isEqual function: This function recursively compares two objects and returns a boolean indicating whether they are equal.
JSON stringification: This method converts an object into a JSON string and then compares the strings using the === operator.

Pros and Cons of Comparison Methods

Lodash's isEqual function
- Pros:
  - Can handle complex nested structures
  - Provides detailed output for debugging purposes (not shown in this benchmark)
- Cons:
  - May be slower due to the recursive nature of the comparison
  - May have issues with circular references or infinite recursion
JSON stringification
- Pros:
  - Fast and lightweight
  - Can handle simple to moderately complex structures
- Cons:
  - May not work correctly for very deeply nested objects
  - May lose type information during the conversion process

Library: Lodash

Lodash is a popular JavaScript utility library that provides a wide range of functions, including isEqual. The isEqual function is used to compare two values and returns a boolean indicating whether they are equal.

Special JS Feature/Syntax: None

There are no special JS features or syntax used in this benchmark that would require additional explanation.

LLMs can make mistakes. Check important info.

I'll break down the benchmark and explain what's being tested, compared, and their pros and cons.

**Benchmark Overview**

The benchmark measures the performance of Lodash's `isEqual` function in comparing two objects with different structures (1 level deep, 2 levels deep, and 3 levels deep). The test also includes comparisons using JSON stringification (`JSON.stringify`) to check if the same object is returned.

**Test Cases**

There are six test cases:

1. `_.isEqual(window.foo1, window.bar1)`: Compares two objects with a single level of nested structure.
2. `JSON.stringify(window.foo1) === JSON.stringify(window.bar1)`: Uses JSON stringification to compare the two objects.
3. `_.isEqual(window.foo2, window.bar2)`: Compares two objects with two levels of nested structure.
4. `JSON.stringify(window.foo2) === JSON.stringify(window.bar2)`: Uses JSON stringification to compare the two objects.
5. `_.isEqual(window.foo3, window.bar3)`: Compares two objects with three levels of nested structure.
6. `JSON.stringify(window.foo3) === JSON.stringify(window.bar3)`: Uses JSON stringification to compare the two objects.

**Comparison Methods**

The comparison methods used in the test cases are:

* Lodash's `isEqual` function: This function recursively compares two objects and returns a boolean indicating whether they are equal.
* JSON stringification: This method converts an object into a JSON string and then compares the strings using the `===` operator.

**Pros and Cons of Comparison Methods**

1. **Lodash's `isEqual` function**
	* Pros:
		+ Can handle complex nested structures
		+ Provides detailed output for debugging purposes (not shown in this benchmark)
	* Cons:
		+ May be slower due to the recursive nature of the comparison
		+ May have issues with circular references or infinite recursion
2. **JSON stringification**
	* Pros:
		+ Fast and lightweight
		+ Can handle simple to moderately complex structures
	* Cons:
		+ May not work correctly for very deeply nested objects
		+ May lose type information during the conversion process

**Library: Lodash**

Lodash is a popular JavaScript utility library that provides a wide range of functions, including `isEqual`. The `isEqual` function is used to compare two values and returns a boolean indicating whether they are equal.

**Special JS Feature/Syntax: None**

There are no special JS features or syntax used in this benchmark that would require additional explanation.

Related benchmarks:

Lodash (v4.17.15) isEqual test (version: 0)

Test on isEqual performance

Comparing performance of: _.isEqual Level 1 vs JSON.stringify Level 1 vs _.isEqual Level 2 vs JSON.stringify Level 2 vs _.isEqual Level 3 vs JSON.stringify Level 3

Created: 5 years ago by: Guest

Jump to the latest result

_.isEqual Level 1

JSON.stringify Level 1

_.isEqual Level 2

JSON.stringify Level 2

_.isEqual Level 3

JSON.stringify Level 3

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A

Autogenerated LLM Summary (model llama3.2:3b, generated 6 months ago):