Benchmark: Immutable.JS get vs object access

HTML Preparation code:

<script src="https://cdnjs.cloudflare.com/ajax/libs/immutable/3.8.2/immutable.min.js"></script>
<script src="https://cdn.jsdelivr.net/npm/immutability-helper@2.7.0/index.min.js"></script>

Script Preparation code:

window.obj = {}
window.objImmutable = Immutable.Map();

for(i=0;i<100;i++){
  const key = 'key'+i
  const value = 'value'+i
  window.obj[key] = value;
  window.objImmutable.set(key, value);
}

Tests:

Object property access
for(i=0;i<100;i++){ const key = 'key'+i window.obj[key] }
ImmutableJS get
for(i=0;i<100;i++){ const key = 'key'+i window.objImmutable.get(key); }

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Object property access
ImmutableJS get

Fastest: N/A

Slowest: N/A

Autogenerated LLM Summary (model llama3.2:3b, generated 27 days ago):

LLMs can make mistakes. Check important info.

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

**Benchmark Definition**

The benchmark definition is a JSON object that describes two test cases:

1. **"Immutable.JS get vs object access"**: This benchmark tests the performance difference between accessing an object property using traditional JavaScript (i.e., `window.obj[key]`) versus using Immutable.js, which provides immutable data structures.
2. **Two individual test cases**:
	* `"Object property access"`: Tests the performance of traditional JavaScript object property access.
	* `"ImmutableJS get"`: Tests the performance of Immutable.js's `get` method for accessing an immutable map.

**Benchmark Preparation Code**

The preparation code is a script that sets up the benchmark environment:

1. Creates two objects: `window.obj` and `window.objImmutable`, where `objImmutable` is initialized as an empty Immutable.Map instance.
2. Loops 100 times, creating properties on both objects using string keys and values.

**Html Preparation Code**

The HTML preparation code includes two JavaScript files that are linked in the HTML document:

1. **`immutable.min.js`**: The main library for Immutable.js.
2. **`index.min.js`**: An optional library called "immutability-helper" which provides utility functions for working with Immutable.js.

**Individual Test Cases**

Each test case is a separate benchmark that measures the performance of accessing an object property or using Immutable.js's `get` method:

1. **"Object property access"`**: Tests the performance of traditional JavaScript object property access by iterating 100 times, accessing properties on the `window.obj` object.
2. **"ImmutableJS get"`**: Tests the performance of Immutable.js's `get` method by iterating 100 times, accessing values from the `window.objImmutable` map using its `get` method.

**Performance Comparison**

The benchmark results show that the "ImmutableJS get" test case has a significantly higher execution rate (126851.2890625 executions/second) compared to the "Object property access" test case (92457.1640625 executions/second). This suggests that Immutable.js's `get` method is faster than traditional JavaScript object property access.

**Pros and Cons**

**Traditional JavaScript Object Property Access:**

Pros:

* Easy to implement and understand
* Does not require additional library dependencies

Cons:

* Can lead to mutable state, which can cause unexpected behavior or side effects in certain situations
* May be slower due to the need to create and manage object properties dynamically

**Immutable.js `get` Method:**

Pros:

* Provides a safe and predictable way to access data, eliminating the risk of mutable state
* Can be faster than traditional JavaScript object property access due to optimized internal implementation

Cons:

* Requires additional library dependencies (Immutable.js)
* May have a steeper learning curve due to its unique immutable data structure model

**Other Considerations**

* The benchmark uses a relatively small dataset (100 iterations) which may not reflect real-world performance scenarios.
* The results should be interpreted in the context of the specific use case and requirements.

As for alternative approaches, other libraries or techniques could be used to compare the performance of traditional JavaScript object property access versus Immutable.js's `get` method. Some examples include:

* Using a testing framework like Jest or Mocha to write unit tests that measure performance
* Implementing a custom benchmarking library using Node.js's built-in `performance` module
* Utilizing a virtual machine or emulator (e.g., V8) to isolate the JavaScript engine and test performance in isolation

Latest run results:

Run details: (Test run date: one year ago)

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/113.0.0.0 Safari/537.36 Edg/113.0.1774.57

Browser/OS: Chrome 113 on Windows

View result in a separate tab

Test name	Executions per second
Object property access	92457.2 Ops/sec
ImmutableJS get	126851.3 Ops/sec

Related benchmarks:

Immutable.JS get vs object access (version: 0)

Comparing performance of: Object property access vs ImmutableJS get

Created: 2 years ago by: Registered User

Jump to the latest result

Object property access

ImmutableJS get

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A

Autogenerated LLM Summary (model llama3.2:3b, generated 27 days ago):