Benchmark: Lodash isEmpty vs Object.keys().length not empty 1

HTML Preparation code:


<script src='https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.5/lodash.min.js'></script>

Tests:

Lodash isEmpty
console.log(!_.isEmpty(undefined))
Object.keys().length
console.log(!!Object.keys(Object(undefined)).length)

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Lodash isEmpty
Object.keys().length

Fastest: N/A

Slowest: N/A

Latest run results:

Run details: (Test run date: 27 days ago)

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/131.0.0.0 Safari/537.36

Browser/OS: Chrome 131 on Mac OS X 10.15.7

View result in a separate tab

Test name	Executions per second
Lodash isEmpty	538080.9 Ops/sec
Object.keys().length	518148.2 Ops/sec

Autogenerated LLM Summary (model gpt-4o-mini, generated 27 days ago):

LLMs can make mistakes. Check important info.

The benchmark defined in the given JSON tests the performance of two different approaches to checking if an object (specifically `undefined` in this case) is empty. The two approaches utilized in this benchmark are:

1. **Lodash's `_.isEmpty()` method**
2. **Using `Object.keys().length`**

### Options Compared

1. **Lodash `_.isEmpty()`**
    - **Description**: Lodash is a popular utility library in JavaScript that provides a wide range of helpful functions for tasks such as data manipulation and functional programming. The `isEmpty` method checks if a value is an object or an array and returns `true` if it has no own enumerable properties.
    - **Example Usage**: `_.isEmpty(undefined)` will return `true` since `undefined` is not an object and does not have any properties.

2. **`Object.keys().length`**
    - **Description**: This is a native JavaScript approach where `Object.keys()` retrieves an array of a given object's property names. Then, by checking the length of that array, you can determine if the object has properties or not.
    - **Example Usage**: `Object.keys(Object(undefined)).length` returns `0` because `Object(undefined)` produces an empty object, and thus it has no own properties, resulting in a length of `0`. The double negation (`!!`) converts this length to a boolean.

### Pros and Cons

- **Lodash `_.isEmpty()`**
    - **Pros**:
        - Handles a variety of data types neatly since it accounts for both objects and arrays.
        - Simplifies the code and improves readability, making it easier to understand that it checks for emptiness.
    - **Cons**:
        - Requires inclusion of the Lodash library, which adds to the payload size; potentially unnecessary overhead if only this function is used.
        - Slightly slower than native methods due to the additional function call and the overhead of the library.

- **`Object.keys().length`**
    - **Pros**:
        - Utilizes built-in JavaScript capabilities and doesn’t require any external libraries, making it lightweight.
        - May perform better in cases where function call overhead is significant.
    - **Cons**:
        - Can be less readable, especially for developers not familiar with this pattern or JavaScript's behavior regarding objects.
        - May be less intuitive, especially for checking types other than objects.

### Considerations

- The specific test here is performed against `undefined`, which is a unique case since neither method is typical for testing emptiness directly against `undefined`. 
- Performance results for these benchmarks show that the Lodash function `_.isEmpty` performs slightly better in terms of executions per second compared to the `Object.keys().length` method in this specific case.

### Alternatives

In addition to the two tested methods, some other options to check for emptiness include:

1. **Direct comparison**: `value === null || value === undefined`: This is a very basic check that can be effective if you are simply checking for `null` or `undefined`.
2. **Using `for..in` loop**: You could iterate over an object's properties to ascertain if it has any. However, this approach can become cumbersome and less efficient compared to using built-in methods.
3. **Using other utility libraries**: Besides Lodash, there are other utilities (like Underscore.js) that offer similar functions for emptiness checks.

Overall, the choice between these methods can depend on the specific use case, code readability preference, and performance needs.

Related benchmarks:

Lodash isEmpty vs Object.keys().length not empty 1 (version: 1)

testtest

Comparing performance of: Lodash isEmpty vs Object.keys().length

Created: 27 days ago by: Guest

Jump to the latest result

Lodash isEmpty

Object.keys().length

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A

Autogenerated LLM Summary (model gpt-4o-mini, generated 27 days ago):