Benchmark: Native !!collection?.length vs Lodash's !isEmpty

HTML Preparation code:

<script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.11/lodash.core.js"></script>

Script Preparation code:

var collection1 = undefined
var collection2 = [1, 2, 3]

var isEmpty = _.isEmpty

Tests:

native undefined
!!(null === collection1 || void 0 === collection1 ? void 0 : collection1.length)
isEmpty undefined
!isEmpty(collection1)
native array
!!(null === collection2 || void 0 === collection2 ? void 0 : collection2.length)
isEmpty array
!isEmpty(collection2)

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
native undefined
isEmpty undefined
native array
isEmpty array

Fastest: N/A

Slowest: N/A

Autogenerated LLM Summary (model llama3.2:3b, generated 26 days ago):

LLMs can make mistakes. Check important info.

I'll break down the provided benchmark JSON and explain what's being tested, compared, and some pros and cons of each approach.

**Benchmark Definition**

The benchmark is comparing two approaches to check if an object or array has a length property:

1. **Native Approach**: `!!(null === collection || void 0 === collection ? void 0 : collection.length)`
2. **Lodash Approach**: `!isEmpty(collection)`

**Library: Lodash**

Lodash is a popular JavaScript library that provides a wide range of utility functions, including the `isEmpty` function.

**Native Approach**

The native approach uses the `!!` operator to convert the boolean result of the conditional expression to a truthy or falsy value. This allows for a more concise and expressive way to check if an object is null, undefined, or has a non-zero length.

Pros:

* Concise and easy to read
* Works well with both objects and arrays

Cons:

* May be less performant than the Lodash approach due to the overhead of converting boolean values
* Requires careful handling of null and undefined cases to avoid errors

**Lodash Approach**

The Lodash approach uses the `isEmpty` function to check if an object or array is empty.

Pros:

* More explicit and self-documenting code
* No need to worry about null and undefined cases

Cons:

* May be less concise than the native approach
* Requires importing the Lodash library, which may add overhead

**Other Considerations**

When comparing these two approaches, it's essential to consider the following factors:

* **Null and undefined handling**: Both approaches require careful handling of null and undefined cases to avoid errors. The native approach uses a conditional expression, while the Lodash approach relies on the `isEmpty` function.
* **Performance**: The Lodash approach may be less performant than the native approach due to the overhead of converting boolean values.

**Individual Test Cases**

Each test case is comparing the performance of the native and Lodash approaches for different inputs:

1. **native undefined**: Compares the performance of `!!(null === collection || void 0 === collection ? void 0 : collection.length)` with null and undefined values.
2. **isEmpty undefined**: Compares the performance of `!isEmpty(collection)` with an undefined value.
3. **native array**: Compares the performance of `!!(null === collection || void 0 === collection ? void 0 : collection.length)` with a non-empty array.
4. **isEmpty array**: Compares the performance of `!isEmpty(collection)` with a non-empty array.

**Alternatives**

Other alternatives to these approaches include:

* Using a library like `check-types` or `type-checker` to perform type checking and error handling
* Implementing custom logic for null, undefined, and empty checks
* Using a more modern JavaScript feature, such as the optional chaining operator (`?.`)

Latest run results:

Run details: (Test run date: 3 years ago)

User agent: Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:84.0) Gecko/20100101 Firefox/84.0

Browser/OS: Firefox 84 on Ubuntu

View result in a separate tab

Test name	Executions per second
native undefined	635153408.0 Ops/sec
isEmpty undefined	6983177.0 Ops/sec
native array	391986048.0 Ops/sec
isEmpty array	15159216.0 Ops/sec

Related benchmarks:

Native !!collection?.length vs Lodash's !isEmpty (version: 0)

Comparing performance of: native undefined vs isEmpty undefined vs native array vs isEmpty array

Created: 4 years ago by: Registered User

Jump to the latest result

native undefined

isEmpty undefined

native array

isEmpty array

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A

Autogenerated LLM Summary (model llama3.2:3b, generated 26 days ago):