Benchmark: lodash 4.17.2 map vs Object.keys map

HTML Preparation code:

<script src="https://cdn.jsdelivr.net/lodash/4.17.4/lodash.min.js"></script>

Script Preparation code:

var value = {a: 30310, b: 100303, c: 3040494};

Tests:

native
Object.keys(value).map((v) => v)
lodash
_.map(value, (v) => v)

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
native
lodash

Fastest: N/A

Slowest: N/A

Latest run results:

No previous run results

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

LLMs can make mistakes. Check important info.

Let's dive into the world of JavaScript microbenchmarks.

**Benchmark Overview**

The benchmark being measured is the performance difference between two ways to iterate over an object in JavaScript: using the `Object.keys` method and the `_.map` function from the Lodash library.

**Test Cases**

There are two test cases:

1. **Native**: This test case uses the built-in `Object.keys` method to iterate over the `value` object, which is defined in the preparation code.
```javascript
Object.keys(value).map((v) => v)
```
2. **Lodash**: This test case uses the `_.map` function from Lodash to iterate over the `value` object.
```javascript
_.map(value, (v) => v)
```

**Options Compared**

The two options being compared are:

* Using the built-in `Object.keys` method
* Using the `_.map` function from Lodash

**Pros and Cons of Each Approach**

**Native (Object.keys)**

Pros:

* Performance: Built-in methods like `Object.keys` are often optimized for performance.
* Simplicity: The syntax is straightforward and easy to understand.

Cons:

* Browser support: While `Object.keys` is a widely supported method, older browsers may not have it implemented or may behave differently.
* Limited functionality: `Object.keys` only returns an array of keys, whereas Lodash's `map` function can perform more complex operations.

**Lodash (.map)**

Pros:

* Flexibility: Lodash's `.map` function can handle more complex data structures and operations.
* Browser support: Lodash is widely used and has good browser support.

Cons:

* Performance: Using an external library like Lodash may introduce performance overhead due to the need for a JavaScript runtime environment.

**Other Considerations**

* In modern browsers, both `Object.keys` and Lodash's `.map` function are likely to be optimized and perform similarly. However, in older browsers or in environments where performance is critical, the choice between these two approaches may matter.
* It's worth noting that the Lodash library itself has some overhead due to its functionality-rich design, which might affect performance.

**Library Used**

The `_.map` function from Lodash is used in this benchmark. Lodash is a popular JavaScript utility library that provides many functions for common tasks like array manipulation, string formatting, and more.

If you're interested in understanding the syntax of special JS features or syntax, I'd be happy to explain them!

Related benchmarks:

lodash 4.17.2 map vs Object.keys map (version: 0)

lodash map vs Object.keys map

Comparing performance of: native vs lodash

Created: 7 years ago by: Guest

Jump to the latest result

native

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):