Benchmark: Nested object - MeasureThat.net

Tests:

With one nested object
const user = { name: 'Jane' }; const address = { street: 'Main St.', number: 213 }; return { ...user, ...{ street: address.street, number: address.number, }, };
Without nested object
const user = { name: 'Jane' }; const address = { street: 'Main St.', number: 213 }; return { ...user, street: address.street, number: address.number, };

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
With one nested object
Without nested object

Fastest: N/A

Slowest: N/A

Latest run results:

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

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.0.0 Safari/537.36

Browser/OS: Chrome 120 on Mac OS X 10.15.7

View result in a separate tab

Test name	Executions per second
With one nested object	30484556.0 Ops/sec
Without nested object	141536512.0 Ops/sec

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

LLMs can make mistakes. Check important info.

Let's break down what's being tested in the provided benchmark.

**Benchmark Definition**

The benchmark is designed to test the performance of JavaScript objects and their methods, specifically the spread operator (`...`). The script preparation code is empty, which means that no additional setup or initialization code is executed before running the benchmark.

**Options compared**

There are two main options being compared:

1. **With nested object**: This option tests a scenario where an object has another nested object as part of its structure.
2. **Without nested object**: This option tests a scenario where the spread operator is used without any nested objects.

**Pros and cons of each approach**

**With nested object:**

Pros:

* More realistic use case, as many JavaScript objects have nested structures in real-world applications.
* Can help identify performance issues related to dealing with nested objects.

Cons:

* May introduce additional complexity, which can lead to slower execution times due to more overhead.

**Without nested object:**

Pros:

* Simpler and more straightforward scenario, which can make it easier to compare performance results.
* Less likely to introduce unnecessary complexity that can slow down the benchmark.

Cons:

* May not accurately represent real-world scenarios where nested objects are common.

**Other considerations**

One notable aspect of this benchmark is the use of the spread operator (`...`). This feature was introduced in ECMAScript 2018 (ES9) and allows for more concise object creation by spreading existing objects or arrays into new ones. The benchmark tests how well JavaScript engines perform when using this feature.

**Library usage**

There are no libraries explicitly mentioned in the provided benchmark definition or individual test cases.

**Special JS features/syntax**

The spread operator (`...`) is a special syntax introduced in ES9. It's used to create new objects by spreading existing ones, and it's commonly used in modern JavaScript development.

**Alternatives**

If this benchmark were part of a larger testing framework, other alternatives might include:

1. Testing the performance of object creation without using the spread operator.
2. Comparing the performance of different JavaScript engines or implementations when dealing with nested objects.
3. Adding more complex scenarios to simulate real-world use cases.

Keep in mind that these are just suggestions, and the specific goals and requirements of the benchmark may dictate alternative approaches.

Related benchmarks:

Nested object (version: 0)

Comparing performance of: With one nested object vs Without nested object

Created: 2 years ago by: Guest

Jump to the latest result

With one nested object

Without nested object

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

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