Benchmark: Test9983776383629

HTML Preparation code:

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

Tests:

lodash merge
var a = { eventId: 1, americanFootballDetails: { clock: "15:00", status: "FINISHED", }, }; var b = { americanFootballDetails: { clock: "15:00", }, }; var c = _.merge(a, b);
object.assign
var a = { eventId: 1, americanFootballDetails: { clock: "15:00", status: "FINISHED", }, }; var b = { americanFootballDetails: { clock: "15:00", }, }; var c = Object.assign(a, b);
spread
var a = { eventId: 1, americanFootballDetails: { clock: "15:00", status: "FINISHED", }, }; var b = { americanFootballDetails: { clock: "15:00", }, }; var c = { ...a, ...b };

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
lodash merge
object.assign
spread

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.

Let's break down the benchmark and explain what's being tested, compared, and the pros and cons of each approach.

**Benchmark Definition**

The benchmark is defined by a JSON object that contains the following information:

* `Name`: A unique name for the benchmark
* `Description`: An optional description of the benchmark (empty in this case)
* `Script Preparation Code`: Optional code that should be executed before running the benchmark (empty in this case)
* `Html Preparation Code`: Optional HTML code that should be included in the test page (a reference to Lodash library)

**Individual Test Cases**

The benchmark consists of three test cases, each representing a different approach to merge two objects:

1. **Lodash Merge**
	* The benchmark definition is a JavaScript code snippet that uses the `_.merge()` function from the Lodash library to merge two objects.
2. **Object.assign**
	* The benchmark definition is a JavaScript code snippet that uses the `Object.assign()` method to merge two objects.
3. **Spread Syntax**
	* The benchmark definition is a JavaScript code snippet that uses the spread syntax (`{ ...a, ...b }`) to merge two objects.

**Comparison**

The three test cases are compared in terms of their performance, with the fastest execution time being recorded as the "RawUAString".

**Pros and Cons of each approach:**

* **Lodash Merge**
	+ Pros:
		- Concise and readable code
		- Robust error handling and support for multiple merging strategies
	+ Cons:
		- Adds an external dependency (Lodash library)
		- May have performance overhead due to the library's functionality
* **Object.assign**
	+ Pros:
		- Native JavaScript method, no external dependencies
		- Efficient performance
	+ Cons:
		- Limited support for merging multiple objects
		- Does not handle errors or edge cases explicitly
* **Spread Syntax**
	+ Pros:
		- Elegant and concise code
		- Fast performance (as it's a native JavaScript feature)
	+ Cons:
		- May have compatibility issues with older browsers
		- Limited support for merging multiple objects

**Library: Lodash**

Lodash is a popular JavaScript library that provides a wide range of utility functions, including `merge()`. It's often used in development to simplify code and improve performance.

**Special JS feature/Syntax: Spread Syntax**

The spread syntax (`{ ...a, ...b }`) is a modern JavaScript feature that allows for concise object merging. Introduced in ECMAScript 2018 (ES2018), it provides a clean and readable way to merge objects while preserving their structure and keys.

**Other alternatives**

If you're interested in exploring other approaches or alternatives, here are some options:

* **JSON Merge Patch**: A lightweight library that provides a simple way to merge JSON objects.
* **Immutable.js**: A library that promotes immutable data structures, which can be useful for building predictable and efficient codebases.
* **Plain JavaScript approaches**: If you're not willing to use libraries or external dependencies, you could consider using plain JavaScript functions like `for...in` loops or `Object.keys()` methods to merge objects.

Keep in mind that each approach has its strengths and weaknesses, and the choice of method ultimately depends on your specific requirements, performance constraints, and personal preferences.

Related benchmarks:

Test9983776383629 (version: 0)

Comparing performance of: lodash merge vs object.assign vs spread

Created: 3 years ago by: Guest

Jump to the latest result

lodash merge

object.assign

spread

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):