Benchmark: _.isEqual vs JSON.stringify big

HTML Preparation code:

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

Script Preparation code:

window.foo = {
      page: 1,
      pageSize: 10,
      sortBy: [{ id: 'score:range', desc: true }],
      filterBy: [
        { id: 'id:range', value: '-1,4,8_10' },
        { id: 'hoge:range', value: '-1,4,8_10' },
        { id: 'hoge', value: 'CCC' },
        { id: 'score:range', value: '-1,4,8_10' },
        { id: 'property_values.foo:range', value: '-1,4,8_10' },
      ],
      aaaaaaaaaaa: [1, 2, 3],
      bbbbbbbbbbbbbbbbbbb: ['foo', 'boo'],
      ccccccccccccccccccc: ['hoge', 'hoge'],
      ddddddddddddddddddddddddd: ['hoge', 'fuga'],
      eeeeeeeeeeeeee: { type: 'hoge', value: 'CCC' },
    };
window.bar = {
      page: 1,
      pageSize: 10,
      sortBy: [{ id: 'score:range', desc: true }],
      filterBy: [
        { id: 'id:range', value: '-1,4,8_10' },
        { id: 'hoge:range', value: '-1,4,8_10' },
        { id: 'hoge', value: 'CCC' },
        { id: 'score:range', value: '-1,4,8_10' },
        { id: 'property_values.foo:range', value: '-1,4,8_10' },
      ],
      aaaaaaaaaaa: [1, 2, 3],
      bbbbbbbbbbbbbbbbbbb: ['foo', 'boo'],
      ccccccccccccccccccc: ['hoge', 'hoge'],
      ddddddddddddddddddddddddd: ['hoge', 'fuga'],
      eeeeeeeeeeeeee: { type: 'hoge', value: 'CCC' },
    };

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

Latest run results:

No previous run results

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

LLMs can make mistakes. Check important info.

I'll break down the provided benchmark definition and explain what's being tested, compared, and the pros/cons of each approach.

**Benchmark Overview**

The benchmark is comparing two approaches: `_.isEqual` (from Lodash) and `JSON.stringify` to check if two objects are equal. The test case uses two identical objects, `window.foo` and `window.bar`, which contain nested objects, arrays, and properties with complex values.

**Options Compared**

1. **`.isEqual(window.foo, window.bar)`**: This approach uses the `_.isEqual` function from Lodash to compare the two objects. `_.isEqual` checks for deep equality between objects, including arrays and other objects.
2. **`JSON.stringify(window.foo) === JSON.stringify(window.bar);`**: This approach converts both objects to JSON strings using `JSON.stringify` and then compares the resulting strings.

**Pros/Cons of Each Approach**

1. **`.isEqual(window.foo, window.bar)`**
	* Pros:
		+ Directly checks for deep equality between objects.
		+ Less prone to false positives due to string comparison (e.g., ignoring whitespace or line breaks).
	* Cons:
		+ Can be slower than the JSON string approach due to the overhead of calling `_.isEqual`.
		+ May not work correctly with certain types of data, such as dates or numbers.
2. **`JSON.stringify(window.foo) === JSON.stringify(window.bar);`**
	* Pros:
		+ Faster than the `.isEqual` approach since it only involves a simple string comparison.
		+ Works with most types of data, including dates and numbers.
	* Cons:
		+ Prone to false positives due to string comparison (e.g., ignoring whitespace or line breaks).
		+ Does not check for deep equality between objects.

**Library: Lodash**

Lodash is a popular JavaScript utility library that provides various functions for working with arrays, objects, and other data structures. `_.isEqual` is one of these functions, which performs a deep comparison between two values to determine if they are equal.

**Special JS Feature/Syntax**

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

**Other Alternatives**

If you were to write your own implementation for comparing objects, you might consider the following alternatives:

1. **Use a library like `jsonschema`**: This library provides functions for validating and comparing JSON data.
2. **Implement a custom deep comparison function**: You could write a custom function that recursively checks for equality between objects, using techniques like JSON serialization or a recursive approach.
3. **Use a JavaScript implementation of the `Object.Equals` method**: Some programming languages have an `Object.Equals` method that can be used to compare objects. However, this is not a standard JavaScript feature.

Keep in mind that each alternative has its own trade-offs and may not offer the same level of performance or correctness as the original `.isEqual` function from Lodash.

Related benchmarks:

_.isEqual vs JSON.stringify big (version: 0)

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):