Benchmark: Lodash isEqual test vs ===

HTML Preparation code:

<script src="https://cdn.jsdelivr.net/npm/lodash@4.17.11/lodash.min.js"></script>

Script Preparation code:

// 0 level deep
window.foo1 = 'foo'
window.bar1 = 'bar'

// 1 level deep
window.foo2 = { foo: 'foo' }
window.bar2 = { bar: 'bar' }

Tests:

_.isEqual Level 1
_.isEqual(window.foo1, window.bar1)
=== Level 1
window.foo1 === window.bar1
_.isEqual Level 2
_.isEqual(window.foo2, window.bar2)
=== Level 2
window.foo2 === window.bar2

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
_.isEqual Level 1
=== Level 1
_.isEqual Level 2
=== Level 2

Fastest: N/A

Slowest: N/A

Autogenerated LLM Summary (model llama3.2:3b, generated 29 days ago):

LLMs can make mistakes. Check important info.

Let's dive into the world of JavaScript microbenchmarks and explore what's being tested in this specific benchmark.

**Benchmark Definition**

The benchmark definition is provided as a JSON object that describes two types of tests:

1. **_.isEqual vs ===**: This test compares the performance of Lodash's `_.isEqual` function with the built-in `===` operator when comparing values.
2. **Test cases for _.isEqual and ===**: These tests individually measure the performance of `_.isEqual` and `===` operators on different types of inputs.

**Options being compared**

In this benchmark, two main options are being compared:

1. **Lodash's `_.isEqual` function**: This function is used to compare values between objects or arrays.
2. **Built-in `===` operator**: This operator is used for primitive value comparison (e.g., strings, numbers).

**Pros and Cons of each approach**

**Lodash's `_.isEqual` function**:

Pros:

* Provides more flexibility when comparing complex data structures (objects, arrays)
* Handles different types of inputs (primitive values, objects, arrays)

Cons:

* May introduce overhead due to the additional logic required for deep comparisons
* May not be optimized for primitive value comparisons

**Built-in `===` operator**:

Pros:

* Fast and lightweight for simple primitive value comparisons
* Optimized for performance

Cons:

* Limited functionality (only supports primitive value comparison)
* May fail or produce incorrect results when comparing complex data structures

**Other considerations**

1. **Library usage**: The benchmark uses Lodash as a library, which provides additional functionality beyond the built-in `===` operator.
2. **Special JS feature/syntax**: There are no special JavaScript features or syntaxes being tested in this benchmark.

**Alternative approaches**

If you're interested in creating your own benchmark or exploring alternative approaches, consider the following:

1. Use a different comparison function (e.g., `JSON.stringify()` for object comparison)
2. Test with different input types (e.g., null, undefined, dates)
3. Explore other optimization techniques (e.g., memoization, caching)

Keep in mind that benchmarking is an art and can be influenced by various factors, including hardware, software configurations, and testing environments.

This explanation should provide a solid understanding of what's being tested in this JavaScript microbenchmark. If you have any further questions or would like me to elaborate on any specific aspect, feel free to ask!

Latest run results:

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

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_13_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/75.0.3770.100 Safari/537.36

Browser/OS: Chrome 75 on Mac OS X 10.13.6

View result in a separate tab

Test name	Executions per second
_.isEqual Level 1	2731688.0 Ops/sec
=== Level 1	4364377.0 Ops/sec
_.isEqual Level 2	977519.4 Ops/sec
=== Level 2	4300805.0 Ops/sec

Related benchmarks:

Lodash isEqual test vs === (version: 0)

Is it a waste of performance to run _.isEqual over something that is not an object? Find out after this commercial break!

Comparing performance of: _.isEqual Level 1 vs === Level 1 vs _.isEqual Level 2 vs === Level 2

Created: 5 years ago by: Guest

Jump to the latest result

_.isEqual Level 1

=== Level 1

_.isEqual Level 2

=== Level 2

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A

Autogenerated LLM Summary (model llama3.2:3b, generated 29 days ago):