Benchmark: Optional Chaining versus _.get lodash V2

Script Preparation code:

var obj = {a: {b: {c: {d: 1}}}}
var badObj = {}

Tests:

Optional Chaining
obj.a?.b?.c?.d || 2 badObj.a?.b?.c?.d || 2
Lodash
_.get(obj, "a.b.c.d", 2) _.get(badObj, "a.b.c.d", 2)

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Optional Chaining
Lodash

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 dive into the world of JavaScript microbenchmarks.

**Benchmark Overview**

The provided JSON represents a benchmark test case that compares two approaches for accessing nested properties in an object: Optional Chaining (ECMAScript 2020) and _.get() from Lodash, a popular utility library.

**Options Compared**

Two options are compared:

1. **Optional Chaining**: A new syntax introduced in ECMAScript 2020, which allows you to access nested properties using the nullish coalescing operator (`?.`). If the property is not present or its value is null or undefined, it returns the second operand (in this case, `2`).
2. **Lodash _.get()**: A utility function from Lodash that allows you to safely navigate nested objects and avoid null reference errors.

**Pros and Cons of Each Approach**

1. **Optional Chaining**
	* Pros:
		+ More concise and expressive syntax.
		+ Less error-prone, as it avoids the need for explicit checks.
		+ Supported in modern browsers and JavaScript engines (ECMAScript 2020+).
	* Cons:
		+ May be less readable for developers familiar with older syntaxes or libraries.
2. **Lodash _.get()**
	* Pros:
		+ More flexible, as it allows you to provide a default value if the property is not present.
		+ Works in environments where Optional Chaining is not supported (e.g., older browsers, Node.js).
	* Cons:
		+ Requires an additional dependency on Lodash (a library that needs to be loaded and executed).

**Lodash _.get() Library**

_.get() is a utility function from Lodash that returns the value of a nested property in an object. It takes three arguments:

1. The object to search (`obj`)
2. A string representing the property path (e.g., "a.b.c.d")
3. An optional default value to return if the property is not present or its value is null or undefined

In the benchmark, _.get() is used with `_.get(obj, "a.b.c.d", 2)` and `_.get(badObj, "a.b.c.d", 2)`, which attempts to access the nested property in both objects.

**Special JavaScript Feature/Syntax**

There are no special JavaScript features or syntaxes mentioned in this benchmark.

Related benchmarks:

Optional Chaining versus _.get lodash V2 (version: 0)

Comparing performance of: Optional Chaining vs Lodash

Created: 3 years ago by: Guest

Jump to the latest result

Optional Chaining

Lodash

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):