Benchmark: Immer (setAutoFreeze(false)) vs Lodash cloneDeep 22

HTML Preparation code:

<script src="https://unpkg.com/immer@0.8.0/dist/immer.umd.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/ramda/0.25.0/ramda.min.js"></script>
<script src="https://cdn.jsdelivr.net/npm/lodash@4.17.15/lodash.min.js"></script>

Script Preparation code:

var { compose, over, set, lensPath, append } = R

var INITIAL_DATA = { items: {}, count: 0, keys: [] }

for (var index = 0; index < 50000; index++) {
  INITIAL_DATA[index] = { id: index, name: `ITEM-${index}`, value: Math.random() }
  INITIAL_DATA.count++
  INITIAL_DATA.keys.push(index)
}

var NEW_ITEM_ID = INITIAL_DATA.count +1

var produce = immer.default

Tests:

immer
data = produce(INITIAL_DATA, draft => { draft.items[NEW_ITEM_ID] = { id: NEW_ITEM_ID, name: 'ITEM-NEW', value: 0 } draft.counter++ draft.keys.push(NEW_ITEM_ID) })
Lodash
data = _.cloneDeep(INITIAL_DATA); data.items[NEW_ITEM_ID] = { id: NEW_ITEM_ID, name: 'ITEM-NEW', value: 0 } data.counter++ data.keys.push(NEW_ITEM_ID)

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
immer
Lodash

Fastest: N/A

Slowest: N/A

Latest run results:

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

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Let's dive into the provided benchmark and explain what's being tested.

**Benchmark Overview**

The benchmark compares the performance of two JavaScript libraries: Immer and Lodash, in terms of creating a new copy of an object using the `cloneDeep` function from Lodash or the `immer.default` function with custom configuration.

**What's Being Tested?**

In this benchmark, we have two test cases:

1.  **Immer (setAutoFreeze(false))**: This test case uses Immer to create a new copy of the initial data using the `immer.default` function. The `setAutoFreeze(false)` option tells Immer not to automatically freeze the draft object after each operation.
2.  **Lodash cloneDeep**: This test case uses Lodash's `cloneDeep` function to create a deep copy of the initial data.

**Options Compared**

In this benchmark, we have two main options:

1.  **Immer with custom configuration**: Immer provides an alternative way to create a new copy of an object using its own `immer.default` function. This approach uses a more functional programming style and can be more efficient than the traditional `cloneDeep` method.
2.  **Lodash cloneDeep**: Lodash's `cloneDeep` function creates a deep copy of an object by recursively cloning all properties.

**Pros and Cons**

Here are some pros and cons of each approach:

1.  **Immer with custom configuration**
    *   Pros:
        *   More efficient memory usage since it doesn't create a new scope for each operation.
        *   Less overhead compared to the traditional `cloneDeep` method.
    *   Cons:
        *   Requires more code and setup than Lodash's `cloneDeep`.
        *   Can be slower due to the additional function call overhead.

2.  **Lodash cloneDeep**
    *   Pros:
        *   Easy to use and well-documented.
        *   Widely supported and widely adopted in the JavaScript community.
    *   Cons:
        *   More memory-intensive since it creates a new scope for each operation.
        *   Can be slower due to the overhead of creating a new object.

**Library Descriptions**

*   **Immer**: Immer is a popular JavaScript library for working with immutable data structures. It provides an alternative way to create new copies of objects using its own `immer.default` function. Immer aims to reduce memory usage and improve performance by avoiding the creation of unnecessary scopes.
*   **Lodash**: Lodash is a comprehensive utility library that provides various functions, including `cloneDeep`, for working with JavaScript data structures.

**Special JS Features/Syntax**

In this benchmark, we don't see any special JavaScript features or syntax being used. However, it's worth noting that Immer uses a functional programming style, which can make the code more concise and easier to read.

**Alternatives**

If you're interested in exploring alternative libraries for creating deep copies of objects, here are some options:

*   **Radium**: Radium is another JavaScript library that provides an immutable data structure framework. It's similar to Immer but with a different implementation.
*   **Preact**: Preact is a lightweight JavaScript library that aims to provide better performance and rendering capabilities compared to React.

I hope this explanation helps you understand the benchmark being tested!

Related benchmarks:

Immer (setAutoFreeze(false)) vs Lodash cloneDeep 22 (version: 0)

Comparing performance of: immer vs Lodash

Created: 5 years ago by: Guest

Jump to the latest result

immer

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):