Benchmark: Object.entries vs lodash toPairs

HTML Preparation code:

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

Tests:

Object.entries
var a = {a:1, b:2, c:3}; var b = Object.entries(a);
_.toPairs
var a = {a:1, b:2, c:3}; var b = _.toPairs(a);

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Object.entries
_.toPairs

Fastest: N/A

Slowest: N/A

Latest run results:

Run details: (Test run date: 9 months ago)

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/138.0.0.0 Safari/537.36

Browser/OS: Chrome 138 on Mac OS X 10.15.7

View result in a separate tab

Test name	Executions per second
Object.entries	10106595.0 Ops/sec
_.toPairs	16118042.0 Ops/sec

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

LLMs can make mistakes. Check important info.

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

**What is being tested?**

The provided JSON represents a JavaScript microbenchmark test case that compares the performance of two approaches: `Object.entries` (built-in JavaScript method) and `_toPairs` from the Lodash library. The test creates an object with three properties (`a`, `b`, and `c`) and then uses each approach to extract its values as arrays.

**Options being compared**

There are only two options being compared:

1. **Object.entries**: A built-in JavaScript method that returns an array of a given object's key-value pairs.
2. **_.toPairs` from Lodash library**: A utility function from the popular JavaScript utility library Lodash that converts an object into an array of its key-value pairs.

**Pros and Cons**

Here are some pros and cons of each approach:

1. **Object.entries**
	* Pros:
		+ Built-in method, so no additional dependencies required.
		+ Compact and efficient implementation.
	* Cons:
		+ May not be optimized for performance in certain scenarios (e.g., large objects).
2. **_.toPairs from Lodash library**
	* Pros:
		+ More flexible and customizable than Object.entries.
		+ Can handle more complex object structures (e.g., nested objects, arrays).
	* Cons:
		+ Requires an additional dependency on the Lodash library.
		+ May have a slight performance overhead due to the function call.

**Library: Lodash**

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

* Array manipulation
* Object manipulation
* String manipulation
* Function composition

The `_.toPairs` function, in particular, is designed to convert an object into an array of its key-value pairs, making it a useful tool for iteration and transformation.

**JavaScript feature or syntax**

There are no special JavaScript features or syntax being used in this benchmark. The code is plain vanilla JavaScript.

**Other alternatives**

If you wanted to compare other approaches, some possible alternatives could be:

* Using the `for...in` loop with `Object.keys()` to iterate over an object's properties.
* Implementing a custom iterator function using `Symbol.iterator`.
* Using another library or framework-specific iteration mechanism (e.g., React's `useCallback`, Vue's `computed` property).

Keep in mind that each approach has its own trade-offs and may not be suitable for every use case. The choice of which method to use ultimately depends on the specific requirements and constraints of your project.

Related benchmarks:

Object.entries vs lodash toPairs (version: 0)

Comparing performance of: Object.entries vs _.toPairs

Created: 6 years ago by: Guest

Jump to the latest result

Object.entries

_.toPairs

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

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