Benchmark: objk a ssign vs spread2

Tests:

spreader
const firstObject = { sampleData: 'Hello world' } const secondObject = { moreData: 'foo bar' } const finalObject = { ...firstObject, ...secondObject };
obj./assiogn
const firstObject = { sampleData: 'Hello world' } const secondObject = { moreData: 'foo bar' } const finalObject = Object.assign(firstObject, secondObject);

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
spreader
obj./assiogn

Fastest: N/A

Slowest: N/A

Latest run results:

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

User agent: Mozilla/5.0 (Linux; Android 10; SM-A920F) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/89.0.4389.105 Mobile Safari/537.36

Browser/OS: Chrome Mobile 89 on Android

View result in a separate tab

Test name	Executions per second
spreader	379886.3 Ops/sec
obj./assiogn	1102320.5 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 provided JSON and explain what's being tested.

**Benchmark Definition**

The benchmark definition is empty, which means that the benchmark creator didn't provide any specific code or logic to test. However, in the individual test cases, we can see that two different approaches are compared:

1. **Spread Syntax (`...`)**: This approach uses the spread operator to merge two objects. The syntax `const finalObject = { ...firstObject, ...secondObject }` creates a new object by copying properties from both `firstObject` and `secondObject`.
2. **Object Assign (`Object.assign()`)**: This approach uses the `Object.assign()` method to merge two objects. The syntax `const finalObject = Object.assign(firstObject, secondObject)` creates a new object by copying properties from both `firstObject` and `secondObject`.

**Pros and Cons**

Both approaches have their advantages:

* **Spread Syntax (`...`)**:
	+ Pros:
		- More concise and readable code.
		- Creates a new object without mutating the original objects.
	+ Cons:
		- Requires modern JavaScript versions (ES6+) to work.
		- Can lead to slower performance due to the overhead of creating a new object.
* **Object Assign (`Object.assign()`)**:
	+ Pros:
		- Widely supported across different browsers and Node.js versions.
		- Faster execution time compared to spread syntax.
	+ Cons:
		- Less readable code, as it requires explicitly specifying the assignment target.
		- Mutates the original object if not used with caution.

**Library and Special JS Features**

None of the provided test cases use any libraries or special JavaScript features. They only rely on built-in JavaScript methods and syntax.

**Other Alternatives**

If you're interested in exploring other approaches, here are a few alternatives:

* **Object Spread Operator (ES6+)**: This is similar to the spread syntax used in the benchmark, but with a more explicit syntax: `const finalObject = { ...firstObject }`. However, this approach still requires modern JavaScript versions.
* **Object.assign() with an Object**: You can also use `Object.assign()` with an object as the target, like this: `const finalObject = Object.assign({}, firstObject, secondObject)`. This approach is slightly faster than using `Object.assign()` without a target.

**Benchmark Preparation Code**

The provided benchmark preparation code is empty, which means that the benchmark creator didn't provide any specific setup or initialization code for the test cases.

Related benchmarks:

objk a ssign vs spread2 (version: 0)

Comparing performance of: spreader vs obj./assiogn

Created: 3 years ago by: Guest

Jump to the latest result

spreader

obj./assiogn

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):