Benchmark: create object vs Error

Script Preparation code:

let i = 0

Tests:

Error obj
const x = Error()
POJO
const y = {name: "hi", id: ++i}

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Error obj
POJO

Fastest: N/A

Slowest: N/A

Latest run results:

Run details: (Test run date: 9 months ago)

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/123.0.0.0 Safari/537.36

Browser/OS: Chrome 123 on Windows

View result in a separate tab

Test name	Executions per second
Error obj	190181.0 Ops/sec
POJO	53403104.0 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 benchmark test cases.

**Benchmark Definition Json**

The `Benchmark Definition` json represents the core idea of the benchmark, which is to compare two approaches:

1. Creating an object using a plain object literal syntax (e.g., `{name: "hi", id: ++i}`)
2. Creating an object using an Error object as a constructor (e.g., `const x = Error()`)

**Options Compared**

The two options being compared are:

1. **POJO (Plain Object Literal)**: Using a plain object literal syntax to create an object.
	* Pros:
		+ Generally faster and more efficient, as it directly creates an object without any additional overhead.
		+ Easier to read and maintain, as the code is concise and straightforward.
	* Cons:
		+ May not be suitable for all use cases, such as when working with legacy code or older browsers that don't support modern object literals.
2. **Error Object**: Using an Error object as a constructor to create an object.
	* Pros:
		+ Can be useful in certain situations, such as when creating objects that need to inherit from the Error class or require additional metadata.
	* Cons:
		+ Typically slower and less efficient than POJO, due to the overhead of creating an Error object and setting its properties.

**Library**

None of the test cases use a library. They only rely on built-in JavaScript features.

**Special JS Features or Syntax**

The `++i` syntax in the POJO example is using the increment operator, which increments the value of the variable `i` by 1. This syntax is specific to JavaScript and is used to create a dynamic identifier for the object.

**Other Alternatives**

If you wanted to test alternative approaches, some possible examples could include:

* Using a constructor function with the `new` keyword (e.g., `const x = new Error()`)
* Using the `Object.create()` method (e.g., `const x = Object.create(Error())`)
* Using a library or framework that provides a more efficient object creation mechanism, such as some JavaScript frameworks or older browsers

**Benchmark Preparation Code**

The provided `Script Preparation Code` is simply setting a variable `i` to 0. This code is likely used to initialize a counter or other variable that's used in the benchmark.

**Individual Test Cases**

The two test cases are:

1. **Error obj**: Creates an object using the Error constructor, which results in an error being thrown immediately.
2. **POJO**: Creates an object using a plain object literal syntax with a dynamic identifier `i`.

The test case for "Error obj" is likely used to measure the performance of creating an object using the Error constructor, while the test case for "POJO" measures the performance of creating an object using a plain object literal syntax.

Related benchmarks:

create object vs Error (version: 0)

Comparing performance of: Error obj vs POJO

Created: 9 months ago by: Registered User

Jump to the latest result

Error obj

POJO

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):