Benchmark: immutable js initial value vs set

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>

Tests:

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

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
initial value
set

Fastest: N/A

Slowest: N/A

Latest run results:

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

LLMs can make mistakes. Check important info.

**Benchmark Explanation**

The provided JSON represents a JavaScript microbenchmarking test on the MeasureThat.net website. The benchmark compares two approaches to create an immutable object in JavaScript.

**Immutable.js and Immutability Helper**

The benchmark uses two libraries:

1. **Immutable.js**: A library for creating immutable data structures. It provides classes like `Map`, `Set`, and others that cannot be changed after creation.
2. **Immutability Helper (ImmutabilityHelper)**: A polyfill for Immutable.js, providing a subset of its functionality to older browsers that don't support it natively.

**Test Cases**

The benchmark consists of two test cases:

1. **"initial value"`**: This test case creates an immutable map using the `Immutable.Map` constructor and sets 100 key-value pairs.
2. **"set"`**: This test case creates an immutable map by setting a single property (key-value pair) on an empty map using the `Immutable.Map().set()` method.

**Approaches Compared**

The benchmark compares two approaches:

1. Creating an immutable object with an initial value (`initial value` test case)
2. Setting a single property on an empty immutable object (`set` test case)

**Pros and Cons of Each Approach**

1. **Initial Value Approach**
	* Pros:
		+ Can create multiple key-value pairs in a single operation
		+ May be faster for large datasets
	* Cons:
		+ Can lead to higher memory usage due to the creation of an entire map with initial values
2. **Set Approach**
	* Pros:
		+ More efficient in terms of memory usage, as only one property is added at a time
		+ Can be beneficial for older browsers that don't support Immutable.js natively
	* Cons:
		+ Requires multiple operations to set all key-value pairs

**Other Considerations**

When evaluating the performance of these approaches, consider factors like:

* Memory usage: The initial value approach may lead to higher memory usage due to the creation of an entire map with initial values.
* Browser support: The `set` approach might be more suitable for older browsers that don't support Immutable.js natively.

**Alternative Approaches**

Other alternatives for creating immutable objects in JavaScript include:

1. Using built-in object constructors (e.g., `Object.freeze()`)
2. Utilizing libraries like Lodash's `FrozenMap`
3. Implementing custom immutable data structures using techniques like memoization or caching

Keep in mind that the choice of approach depends on specific requirements, such as performance, memory usage, and browser support.

Related benchmarks:

immutable js initial value vs set (version: 0)

Comparing performance of: initial value vs set

Created: 6 years ago by: Guest

Jump to the latest result

initial value

set

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):