Benchmark: asdasddsa - MeasureThat.net

HTML Preparation code:


<script src='https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.20/lodash.min.js'></script>
<script src='https://unpkg.com/deepmerge@4.2.2/dist/umd.js'></script>

Tests:

lodash merge
var a = { a: 'oh', b: 'my', c: { a: 'a', b: { c: 'c' } } }; var b = { c: { b: { d: 'a' }, c: { d: 'd' } } }; var c = _.merge({}, a, b);
object.assign
var a = { a: 'oh', b: 'my', c: { a: 'a', b: { c: 'c' } } }; var b = { c: { b: { d: 'a' }, c: { d: 'd' } } }; var c = deepmerge({}, a, b);

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
lodash merge
object.assign

Fastest: N/A

Slowest: N/A

Latest run results:

Run details: (Test run date: 3 years ago)

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:84.0) Gecko/20100101 Firefox/84.0

Browser/OS: Firefox 84 on Windows

View result in a separate tab

Test name	Executions per second
lodash merge	219557.9 Ops/sec
object.assign	418953.1 Ops/sec

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

LLMs can make mistakes. Check important info.

Let's break down the benchmark provided by MeasureThat.net.

**Overview**

The benchmark compares two approaches for merging objects in JavaScript: `_.merge` from the Lodash library and `Object.assign`. The benchmark is designed to test which approach performs better in terms of execution speed.

**Test Cases**

There are only two test cases:

1. **"lodash merge"`: This test case uses the `_.merge` function from the Lodash library, a popular utility library for JavaScript.
2. **"object.assign"`: This test case uses the built-in `Object.assign` method in JavaScript.

**Options Compared**

The benchmark compares two options:

* Lodash's `_merge` function
* The built-in `Object.assign` method

**Pros and Cons**

Here are some pros and cons of each approach:

**Lodash's `_merge` function:**

Pros:

* Well-tested and widely used library
* Supports complex merge scenarios, including array merging
* Provides a simple and consistent API for merging objects

Cons:

* Adds an additional dependency to the project (the Lodash library)
* May have performance overhead due to the need to load the library

**`Object.assign`:**

Pros:

* Built-in method, so no additional dependency is required
* Fast and lightweight, as it's implemented in native code
* Simple and straightforward API for merging objects

Cons:

* Only supports shallow object merge (i.e., does not recursively merge nested objects)
* May not work correctly with certain types of objects or arrays (e.g., `Date` objects)

**Library Used: Lodash**

Lodash is a popular JavaScript utility library that provides a wide range of functions for tasks such as array manipulation, string manipulation, and object manipulation. The `_merge` function is part of this library and is designed to merge two objects into a new object.

**Special JS Feature/Syntax (None)**

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

**Other Alternatives**

If you're looking for alternative approaches to merging objects, here are a few options:

* **`Object.assign()` with `Array.prototype.slice()`**: This approach can be used to merge arrays as well as objects.
* **`JSON.merge()`**: Some JavaScript engines (e.g., SpiderMonkey) provide a built-in function called `JSON.merge()` that can be used for merging objects.
* **`Fusion of JSON patches`**: This approach involves applying a series of "patches" to an initial object, rather than trying to merge two separate objects.

Keep in mind that these alternative approaches may have their own trade-offs and performance characteristics, so it's worth experimenting with different approaches to find the one that works best for your specific use case.

Related benchmarks:

asdasddsa (version: 0)

Comparing performance of: lodash merge vs object.assign

Created: 3 years ago by: Guest

Jump to the latest result

lodash merge

object.assign

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A

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