Benchmark: destructuring vs chaining

Tests:

destructuring
const details = { name : { firstName: 'harish', lastName: "kumar" } } const {name: {firstName, lastName}} = details
chaining
const details = { name : { firstName: 'harish', lastName: "kumar" } } const firstName = details.name.firstName const lastName = details.name.lastName

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
destructuring
chaining

Fastest: N/A

Slowest: N/A

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

LLMs can make mistakes. Check important info.

I'd be happy to explain the JavaScript microbenchmark you provided.

The benchmark compares two approaches: destructuring and chaining, both used to extract properties from an object.

**Destructuring**

In destructuring, you assign values directly from an object without creating intermediate variables. The syntax is as follows:
```javascript
const { name: { firstName, lastName } } = details;
```
This approach has several advantages:

* **Readability**: Destructuring makes the code more concise and easier to read.
* **Efficiency**: Since you're not creating intermediate variables, destructuring can be faster.

However, there are some potential drawbacks:

* **Limited compatibility**: Some older browsers or environments might not support this syntax.
* **Complexity**: If you have multiple levels of nesting, the syntax can become more complex and harder to read.

**Chaining**

In chaining, you create intermediate variables before accessing nested properties. The syntax is as follows:
```javascript
const firstName = details.name.firstName;
const lastName = details.name.lastName;
```
This approach has its own set of advantages and disadvantages:

* **Readability**: Chaining can make the code more readable for those who prefer explicit variable assignments.
* **Flexibility**: You can easily reuse intermediate variables in other parts of your code.

However, chaining also has some potential drawbacks:

* **Bloat**: Creating multiple intermediate variables can lead to a larger number of lines of code and increased bloat.
* **Performance overhead**: Chaining might incur additional performance overhead due to the creation of temporary variables.

**Library**

The `details` object is an example of an object with nested properties. The purpose of this object is to demonstrate the extraction of nested properties using both destructuring and chaining.

**JavaScript features**

The benchmark does not use any special JavaScript features, such as async/await or generators.

**Alternatives**

Other alternatives for extracting nested properties from objects include:

* Using a library like Lodash, which provides functions like `pick` or `get` to access nested properties.
* Creating a recursive function to traverse the object graph.
* Using a functional programming approach with higher-order functions and closures.

It's worth noting that the choice of approach ultimately depends on the specific use case, personal preference, and performance requirements.

Related benchmarks:

destructuring vs chaining (version: 0)

destructuring vs chaining

Comparing performance of: destructuring vs chaining

Created: 3 years ago by: Guest

Jump to the latest result

destructuring

chaining

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):