Benchmark: Map (Native vs Ramda vs Lodash vs Immutable)

HTML Preparation code:

<script src="//cdnjs.cloudflare.com/ajax/libs/ramda/0.25.0/ramda.min.js"></script>
<script src="//cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.5/lodash.min.js"></script>
<script type='text/javascript' src='https://cdnjs.cloudflare.com/ajax/libs/immutable/3.8.2/immutable.min.js'></script>

Script Preparation code:

function double(n) {
	return n*2;
}
var data = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30];

Tests:

Ramda.map
R.map(double, data);
Array.prototype.map
data.map(double);
lodash.map
_.map(data, double);
Immutable.map
Immutable.fromJS(data).map(double)

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Ramda.map
Array.prototype.map
lodash.map
Immutable.map

Fastest: N/A

Slowest: N/A

Latest run results:

Run details: (Test run date: 10 months ago)

User agent: Mozilla/5.0 (Android 15; Mobile; rv:144.0) Gecko/144.0 Firefox/144.0

Browser/OS: Firefox Mobile 144 on Android

View result in a separate tab

Array.prototype.map

4.3M/s

lodash.map

3.3M/s

Ramda.map

2.6M/s

Immutable.map

263K/s

View exact numbers

Test name	Executions per second
✓ Array.prototype.map	4,254,229 Ops/sec
lodash.map	3,313,478 Ops/sec
Ramda.map	2,636,302 Ops/sec
Immutable.map	263,208 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 provided benchmarking test cases for Map operations.

**What is tested?**

The test measures the performance of four different map functions:

1. Native Array.prototype.map
2. Ramda's R.map
3. Lodash's _.map
4. Immutable.js's Immutable.map

Each function is applied to a large array of numbers (`data`) and a transformation function (`double(n) = n * 2`).

**Options compared**

The test compares the performance of these four map functions, which differ in their implementation details:

1. **Native Array.prototype.map**: This is the built-in JavaScript method for mapping an array's elements. It's a simple and lightweight implementation that uses a single loop to iterate over the array.
2. **Ramda's R.map**: Ramda is a functional programming library that provides a more concise and expressive way of mapping arrays. Its `R.map` function uses a similar approach as the native method, but with additional features like caching and memoization.
3. **Lodash's _.map**: Lodash is another popular utility library that provides a wide range of functions for tasks like mapping. Its `_.map` function is similar to Ramda's, but with some differences in implementation details.
4. **Immutable.js's Immutable.map**: Immutable.js is a library designed for working with immutable data structures. Its `Immutable.map` function creates a new, immutable array by applying the transformation function to each element.

**Pros and Cons of each approach**

1. **Native Array.prototype.map**:
	* Pros: Lightweight, simple implementation, widely supported.
	* Cons: May not be as efficient or expressive as other implementations.
2. **Ramda's R.map**:
	* Pros: More concise and expressive than native implementation, caching/memoization for performance improvements.
	* Cons: Additional dependencies, may not be suitable for all use cases.
3. **Lodash's _.map**:
	* Pros: Similar to Ramda's, with some additional features like debouncing.
	* Cons: Another dependency, similar limitations as Ramda's.
4. **Immutable.js's Immutable.map**:
	* Pros: Provides immutable data structures, which can be beneficial for certain use cases.
	* Cons: Heavier-weight implementation, may not be necessary for most use cases.

**Library descriptions**

1. **Ramda**: A functional programming library providing a wide range of higher-order functions for tasks like mapping, filtering, and reducing.
2. **Lodash**: A utility library providing a vast array of helper functions for common tasks, including mapping, filtering, and modifying arrays.
3. **Immutable.js**: A library designed for working with immutable data structures, providing efficient and thread-safe operations.

**Special JS features or syntax**

None mentioned in the provided benchmarking test cases.

**Alternatives**

Other alternatives for map-like functionality include:

1. **Underscore.js**: Another utility library that provides a similar mapping function to Lodash.
2. **Fastify's `map` method**: A lightweight, built-in method for mapping arrays in Fastify, a web framework.
3. **V8's built-in `Array.prototype.map` optimization**: Google's V8 JavaScript engine uses various optimizations, including caching and loop unrolling, to improve performance of the native Array.prototype.map method.

In conclusion, the test compares the performance of four different map functions: native Array.prototype.map, Ramda's R.map, Lodash's _.map, and Immutable.js's Immutable.map. Each function has its pros and cons, and understanding their differences can help developers choose the most suitable implementation for specific use cases.

Map (Native vs Ramda vs Lodash vs Immutable) (version: 1) Benchmark.js

measures the speed of ramda's map vs Array's native map vs lodash map vs Immutable map

Comparing performance of: `Ramda.map vs Array.prototype.map vs lodash.map vs Immutable.map`

Created: 8 years ago by: Registered User

Go to the latest result

Ramda.map

Array.prototype.map

lodash.map

Immutable.map

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

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

Map (Native vs Ramda vs Lodash vs Immutable) (version: 1) Benchmark.js

measures the speed of ramda's map vs Array's native map vs lodash map vs Immutable map

Comparing performance of: Ramda.map vs Array.prototype.map vs lodash.map vs Immutable.map

Created: 8 years ago by: Registered User

Go to the latest result

Ramda.map

Array.prototype.map

lodash.map

Immutable.map

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

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

Related benchmarks

Comparing performance of: `Ramda.map vs Array.prototype.map vs lodash.map vs Immutable.map`