Benchmark: lodash isEmpty vs ES6 implementation from stack overflow

HTML Preparation code:

<script src="https://cdn.jsdelivr.net/g/lodash@4(lodash.min.js+lodash.fp.min.js)"></script>

Script Preparation code:

var obj = {
  a: 1,
  b: 2,
  c: 3,
  d: {
    a: 1
  },
  g: {
    a: {
      c: 1
    }
  }
}

Tests:

lodash is empty fp
_.isEmpty(obj)
stack overflow implementation
const isEmptyObj = obj => ( obj && Object.keys(obj).length === 0 && Object.getPrototypeOf(obj) === Object.prototype ) isEmptyObj(obj)

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
lodash is empty fp
stack overflow implementation

Fastest: N/A

Slowest: N/A

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Autogenerated LLM Summary (model llama3.2:3b, generated one year ago):

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Let's break down the provided JSON and explain what's being tested.

**Benchmark Overview**

The benchmark compares two approaches to check if an object is empty: one using Lodash's `isEmpty` function (a part of the popular utility library Lodash) and another implementing it from scratch based on a Stack Overflow solution.

**Lodash Library**

Lodash is a JavaScript utility library that provides a collection of high-quality, reusable functions for tasks such as array manipulation, object transformation, functional programming, and more. The `isEmpty` function in this benchmark checks if an object has any keys or properties.

In the provided HTML preparation code, Lodash's minified JavaScript file (`lodash.min.js`) is included, along with a specific version of its functional programming (FP) library (`lodash.fp.min.js`).

**Implementation Approaches**

The two approaches being compared are:

1. **Lodash `isEmpty` function**: This uses the built-in Lodash implementation to check if an object is empty. The implementation details are not provided in the benchmark, but it's likely using a combination of checks to ensure the object has no keys or properties.
2. **Stack Overflow Implementation**: This approach manually checks for emptiness by verifying that:
	* The object exists and is not null/undefined
	* It has no keys (using `Object.keys()`)
	* Its prototype chain ends at the `Object.prototype` object

**Pros and Cons**

Here's a brief analysis of each approach:

1. **Lodash `isEmpty` function**:
	* Pros: Fast, reliable, and well-tested implementation.
	* Cons: Requires including an external library (Lodash), which might have additional overhead for some users.
2. **Stack Overflow Implementation**:
	* Pros: Lightweight, no external dependencies required.
	* Cons: May be slower due to the manual checks, and its implementation details might not be as optimized or reliable.

**Other Considerations**

When choosing between these approaches, consider the trade-offs between performance, reliability, and library overhead. If you need a fast and lightweight solution with minimal dependencies, the Stack Overflow implementation might be suitable. However, if you prioritize speed and relyability, using an established library like Lodash can provide better results.

**Special JS Feature/Syntax**

The benchmark uses a feature of JavaScript called " FP" (Functional Programming), which is a programming paradigm that emphasizes immutability, recursion, and higher-order functions. The `lodash.fp.min.js` file includes functional programming utilities, such as map, filter, and reduce. However, the Stack Overflow implementation doesn't explicitly use these features.

**Alternatives**

If you need alternative approaches to check if an object is empty, consider using:

1. **ES6's `Object.keys()`**: Check if the length of the `Object.keys()` array returned by the object is 0.
2. **`typeof` and `== 0`**: Verify that the object is not defined or null using `typeof` operator and `== 0`.
3. **A simple `for...in` loop**: Iterate over the object's properties using a `for...in` loop to check if any properties exist.

Keep in mind that these alternatives might have performance implications compared to the Lodash implementation or the Stack Overflow solution.

Related benchmarks:

lodash isEmpty vs ES6 implementation from stack overflow (version: 0)

https://stackoverflow.com/questions/679915/how-do-i-test-for-an-empty-javascript-object

Comparing performance of: lodash is empty fp vs stack overflow implementation

Created: 4 years ago by: Guest

Jump to the latest result

lodash is empty fp

stack overflow implementation

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):