Benchmark: multiple optional chaining & nullish coalescing & Bracket notation vs _.get & interpolation

Script Preparation code:

var a = {
    _TEST: {
        some: {
            very_long_key_variant: 1
        }
    }
}

var VERY_LONG_KEY_VARIANT = 'some.very_long_key_variant';

Tests:

Optional chaining + nullish coalescing + bracket notation
const variant = a?._TEST?.[VERY_LONG_KEY_VARIANT] ?? 0;
_.get + interpolation
const variant = _.get(a, `_TEST.${VERY_LONG_KEY_VARIANT}`, 0);

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Optional chaining + nullish coalescing + bracket notation
_.get + interpolation

Fastest: N/A

Slowest: N/A

Latest run results:

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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 JSON benchmark.

The test cases compare the performance of two different approaches to access a nested object property:

1. **Optional Chaining and Nullish Coalescing with Bracket Notation**: This approach uses the optional chaining operator (`?.`) and nullish coalescing operator (`??`) to safely navigate the nested object and provide a default value if the property is not found.
2. **_.get() Method from Lodash Library**: This approach uses the `_.get()` method from the Lodash library, which is designed specifically for accessing nested objects in a safe and efficient manner.

Now, let's discuss the pros and cons of each approach:

**Optional Chaining and Nullish Coalescing with Bracket Notation**

Pros:

* Highly readable and concise code
* Easy to understand and maintain
* Does not require any additional libraries or dependencies

Cons:

* May be slower than the optimized approach used by Lodash, as it involves multiple iterations and checks
* Can lead to performance issues if the nested object is very deep or complex

**_.get() Method from Lodash Library**

Pros:

* Optimized for performance and efficiency
* Takes into account edge cases and potential pitfalls in nested object access
* Provides a robust and reliable way to navigate nested objects

Cons:

* Requires an additional library dependency (Lodash)
* May have a slightly higher learning curve due to its specific syntax and options
* Some developers might find the API less intuitive or more verbose compared to the optional chaining approach.

**Other Considerations**

In addition to these two approaches, it's worth noting that there are other methods for accessing nested objects in JavaScript, such as using `in` operator or `hasOwnProperty()` method. However, these approaches may not be as concise, readable, or efficient as the ones mentioned above.

**Library and Purpose**

The Lodash library is a popular utility library for JavaScript that provides a comprehensive set of functions for tasks like array manipulation, object transformation, and more. The `_.get()` method is specifically designed to safely access nested objects, providing a convenient way to navigate complex object structures without worrying about errors or edge cases.

**Special JS Feature**

There is no special JavaScript feature used in this benchmark, as it solely focuses on the implementation details of accessing nested objects using different approaches.

Related benchmarks:

multiple optional chaining & nullish coalescing & Bracket notation vs _.get & interpolation (version: 0)

Comparing performance of: Optional chaining + nullish coalescing + bracket notation vs _.get + interpolation

Created: 3 years ago by: Guest

Jump to the latest result

Optional chaining + nullish coalescing + bracket notation

_.get + interpolation

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):