Benchmark: Object.assign vs Lodash.assign (Lodash 4)

HTML Preparation code:

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

Script Preparation code:

var person = {name: 'Frederick', lastName: 'Corcino Alejo'};

Tests:

Lodash Assign
_.assign({}, person, {age: 15, favorite_color: "red"});
Native Assign
Object.assign({}, person, {age: 15, favorite_color: "red"});

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Lodash Assign
Native Assign

Fastest: N/A

Slowest: N/A

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

LLMs can make mistakes. Check important info.

Let's break down the provided benchmark and explain what's being tested, compared, and their pros/cons.

**Benchmark Overview**

The benchmark compares the performance of two approaches: `Object.assign` (native JavaScript) and `_.assign` from the Lodash library.

**Options Compared**

1. **Native JavaScript (`Object.assign`)**: This is a built-in JavaScript function that creates a new object by copying existing values from an object source.
2. **Lodash Library (`_.assign`)**: A popular utility library that provides a simple way to merge objects.

**Pros and Cons of Each Approach**

1. **Native JavaScript (`Object.assign`)**:
	* Pros:
		+ Built-in function, so no additional dependencies are required.
		+ Often faster since it's implemented in native code.
		+ Can be more efficient for large datasets.
	* Cons:
		+ May not work as expected with certain data types (e.g., arrays).
		+ Requires manual configuration of options (e.g., deep merge, nullish coalescing).
2. **Lodash Library (`_.assign`)**:
	* Pros:
		+ Easier to use, especially for complex merges.
		+ Provides more features and flexibility (e.g., merging arrays, objects with nested objects).
		+ Can be more convenient for developers who are not familiar with native JavaScript functions.
	* Cons:
		+ Requires an additional library dependency.
		+ May be slower since it's a JavaScript function.

**Library: Lodash**

Lodash is a popular JavaScript utility library that provides a set of helper functions to simplify common programming tasks. The `_.assign` function is one of its most widely used helpers, making it easy to merge objects.

**Special JS Feature/Syntax: None mentioned in the provided benchmark definition**

However, if we look at other benchmarks on MeasureThat.net, some tests might use special JavaScript features or syntax like async/await, Promises, or modern ECMAScript features (e.g., `const`, `let`).

**Other Alternatives**

If you're looking for alternatives to Lodash's `_.assign`, you can consider:

1. **Object.assign()**: The native JavaScript function mentioned in the benchmark.
2. **JSON Merge Patch (jmp)**: A lightweight library that provides a simple way to merge JSON objects.
3. **Merge-deep**: A small, fast library for merging complex data structures.

Keep in mind that each alternative has its own strengths and weaknesses, so choose the one that best fits your specific use case.

I hope this explanation helps you understand what's being tested in the benchmark!

Latest run results:

Run details: (Test run date: 2 years ago)

User agent: Mozilla/5.0 (X11; Linux x86_64; rv:102.0) Gecko/20100101 Firefox/102.0

Browser/OS: Firefox 102 on Linux

View result in a separate tab

Test name	Executions per second
Lodash Assign	2290009.2 Ops/sec
Native Assign	5948617.5 Ops/sec

Related benchmarks:

Object.assign vs Lodash.assign (Lodash 4) (version: 0)

Measuring approaches performance

Comparing performance of: Lodash Assign vs Native Assign

Created: 4 years ago by: Registered User

Jump to the latest result

Lodash Assign

Native Assign

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A

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