Benchmark: Optional Chaining versus _.get lodash simple obj

Script Preparation code:

var obj = {
    a: {
        b: '123'
    }
}

Tests:

Optional Chaining
(obj.a == null ? undefined : obj.a.b == null ? undefined : obj.a.b) || 2
Lodash
_.get(obj, "a.b", 2)
Lodash get []
_.get(obj, ['a', 'b'], 2);

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Optional Chaining
Lodash
Lodash get []

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 what's being tested on the provided JSON.

**Benchmark Definition**

The benchmark is comparing three different approaches to access nested properties in an object:

1. **Optional Chaining**: The `?.` operator, introduced in ECMAScript 2020, allows safe navigation through nested objects without throwing errors.
2. **Lodash _.get() method**: Lodash is a popular JavaScript library that provides a utility function for accessing nested properties in objects.

**Options Compared**

The options being compared are:

* Using Optional Chaining (`?.`) to access `obj.a.b`
* Using the `_.get()` method from Lodash with two arguments (string) to access `obj.a.b`
* Using the `_.get()` method from Lodash with an array of keys (`['a', 'b']`) to access `obj.a.b`

**Pros and Cons**

Here are some pros and cons of each approach:

1. **Optional Chaining (`?.`)**:
	* Pros: concise, safe navigation, easy to read.
	* Cons: requires ECMAScript 2020 support (not available in older browsers).
2. **Lodash _.get() method**:
	* Pros: widely supported, well-maintained library with many utility functions.
	* Cons: adds additional dependency (Lodash), can be verbose with multiple arguments.
3. **Lodash _.get() method with array of keys (`['a', 'b']`)**:
	* Pros: allows for more control over the navigation path, can be faster due to fewer function calls.
	* Cons: requires additional setup and understanding of Lodash's API.

**Library - Lodash**

Lodash is a JavaScript utility library that provides a wide range of functions for tasks such as:

* Array manipulation
* Object manipulation (e.g., _.get(), _.set(), _.assign())
* Function utility functions (e.g., _.partial(), _.bindall())
* String manipulation

Lodash's `_.get()` method is specifically designed to access nested properties in objects, and it provides a flexible way to specify the navigation path.

**Special JS Feature - Optional Chaining**

Optional Chaining (`?.`) is a new feature introduced in ECMAScript 2020 that allows safe navigation through nested objects. It was added to allow developers to avoid null pointer exceptions when working with nested object properties. The syntax `obj.a?.b` returns `undefined` if `a` or `b` is null or undefined, rather than throwing an error.

The use of Optional Chaining in this benchmark allows for concise and safe navigation through the nested object `obj`, without the need to explicitly check for null or undefined values.

**Alternatives**

If you're interested in exploring alternative approaches, here are a few options:

* Using bracket notation (`obj['a']['b']`) for direct access
* Using the `in` operator to check if properties exist before accessing them (`if ('a' in obj && 'b' in obj.a) { ... }`)
* Implementing your own navigation function using recursion or iteration

Keep in mind that these alternatives may have different performance characteristics, readability trade-offs, or added complexity depending on the specific use case.

Related benchmarks:

Optional Chaining versus _.get lodash simple obj (version: 0)

Comparing performance of: Optional Chaining vs Lodash vs Lodash get []

Created: 4 years ago by: Guest

Jump to the latest result

Optional Chaining

Lodash

Lodash get []

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):