Benchmark: class object creation: with field declaration vs not

Tests:

no declaration
class SomeClass { constructor(one) { this.one = one } } for (var i = 0; i < 10_000; i++) { const obj = new SomeClass(2) }
declaration and constructor
class SomeClass { one constructor(one) { this.one = one } } for (var i = 0; i < 10_000; i++) { const obj = new SomeClass(2) }

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
no declaration
declaration and constructor

Fastest: N/A

Slowest: N/A

Latest run results:

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

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Let's break down the provided benchmark definition and its test cases.

**What is being tested?**

The benchmark measures the performance difference in creating class objects in JavaScript with and without field declaration. Specifically, it tests two variations:

1. Creating a class object without declaring any fields (`no declaration`).
2. Creating a class object with a declared field and a constructor that uses the `this` keyword (`declaration and constructor`).

**Options being compared**

In this case, the benchmark is comparing two approaches:

* No field declaration: The class object is created without explicitly declaring any fields.
* Field declaration with constructor: The class object is created with an explicitly declared field and a constructor function that uses the `this` keyword to assign values.

**Pros and Cons of each approach**

1. **No field declaration**
	* Pros:
		+ Simple and concise syntax
		+ Fewer lines of code, potentially reducing compilation time
	* Cons:
		+ May lead to accidental assignment or use of undefined properties
2. **Field declaration with constructor**
	* Pros:
		+ Explicitly declares the field, making it clearer what values can be assigned
		+ Reduces the risk of accidental assignment or use of undefined properties
	* Cons:
		+ Requires an additional line of code to declare the field, potentially increasing compilation time

**Library usage**

There is no explicit library mentioned in the benchmark definition. However, since it's a JavaScript benchmark, it's likely that some sort of environment or module system (e.g., Node.js) is being used under the hood.

**Special JS feature or syntax**

The benchmark uses JavaScript classes and constructors, which are modern features introduced in ECMAScript 2015 (ES6). These features provide more concise and expressive way to define classes and objects.

In summary, this benchmark aims to measure the performance difference between creating class objects with and without field declaration, highlighting the benefits of explicit field declarations in terms of code readability and safety.

Related benchmarks:

class object creation: with field declaration vs not (version: 0)

Comparing performance of: no declaration vs declaration and constructor

Created: 2 years ago by: Registered User

Jump to the latest result

no declaration

declaration and constructor

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):