Benchmark: lodash _.merge vs destruction2

HTML Preparation code:

<script src='https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.5/lodash.min.js'></script>

Script Preparation code:

var obj1 = { adalet: false }
var obj2 = { barış: false }
var obj3 = { özgürlük: false }

Tests:

lodash
_.merge({}, obj1, obj2, obj3)
destruction
({...obj1, ...obj2, ...obj3})

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
lodash
destruction

Fastest: N/A

Slowest: N/A

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/140.0.0.0 Safari/537.36

Browser/OS: Chrome 140 on Windows

View result in a separate tab

Test name	Executions per second
lodash	2603038.5 Ops/sec
destruction	16036232.0 Ops/sec

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

LLMs can make mistakes. Check important info.

Let's dive into the world of JavaScript microbenchmarks on MeasureThat.net.

**Benchmark Overview**

The provided benchmark compares two approaches for merging objects: Lodash's `_merge` function and the "destruction" method, which is a shorthand way of creating a new object by spreading the properties from existing objects. The benchmark is designed to test which approach performs better in terms of execution speed.

**Options Compared**

There are only two options being compared:

1. **Lodash's `_merge` function**: A utility function provided by the Lodash library that merges multiple objects into one.
2. **Destruction method (spread operator)**: A shorthand way of creating a new object by spreading the properties from existing objects.

**Pros and Cons**

### Lodash's `_merge` function

Pros:

* Provides more control over the merge process, allowing for deeper nesting and handling of complex data structures.
* Often used in production code, making it a familiar and reliable choice.

Cons:

* Requires importing an external library (Lodash), which may introduce additional overhead or dependencies.
* May be overkill for simple object merges.

### Destruction method (spread operator)

Pros:

* Simple and concise syntax, making it easy to understand and use.
* Does not require importing any libraries.
* Efficiently creates a new object without the need for explicit loop logic.

Cons:

* Less control over the merge process compared to `_merge` function.
* Only suitable for merging objects with simple properties.

**Library: Lodash**

Lodash is a popular JavaScript utility library that provides a wide range of functions for tasks such as array manipulation, string manipulation, and more. The `_merge` function is part of this library and helps simplify object merge operations by providing a standardized approach to handling complex data structures.

**Special JS Feature/Syntax: Spread Operator**

The destruction method (spread operator) uses a new JavaScript feature introduced in ECMAScript 2015, which allows objects to be spread into new objects or arrays. This syntax is concise and readable but may not be as well-known among older developers who are not familiar with modern JavaScript features.

**Other Alternatives**

If you're interested in exploring alternative methods for object merging, here are a few options:

* **Object.assign()**: A built-in method for assigning values from one or more source objects to a target object. While it's available on all browsers, its syntax can be less readable than the destruction method.
* **Object.create() + Object.assign()**: This approach creates a new object using `Object.create()` and then merges properties into it using `Object.assign()`. It provides more control over the merge process but is less concise than the destruction method.

Keep in mind that these alternatives may not offer significant performance improvements over the destruction method or Lodash's `_merge` function, especially for simple object merges.

Related benchmarks:

lodash _.merge vs destruction2 (version: 0)

lodash _.merge vs destruction2

Comparing performance of: lodash vs destruction

Created: 6 years ago by: Guest

Jump to the latest result

lodash

destruction

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

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