Benchmark: Lodash pick vs manual object descturct8

HTML Preparation code:

<script src='https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.5/lodash.min.js'></script>

Script Preparation code:

var images = {
    "1280x1840_480": {
        "downloadUrl": "https://static.manta.net/2022-07-20/C3/C3PgwSGN2kE1BQQh.jpg",
        "data": {
            "blurhash": "UjIO2.IoyCRP~pjFxuW=%Mxue.xu%MWUNGs:",
            "height": 690,
            "width": 480
        }
    },
    "1280x1840_720": {
        "downloadUrl": "https://static.manta.net/2022-07-20/Lr/LrbiRJxUnwT5Trs5.jpg",
        "data": {
            "blurhash": "UjIO2-IoyCRP~pjF%2W=%MxujFxu%MaxNGs:",
            "height": 1035,
            "width": 720
        }
    }
}

Tests:

Optimization1
const n = Object.keys(images || {}) .reduce((obj, key) => { obj[key] = { downloadUrl: images[key].downloadUrl, id: images[key].id, blurhash: images[key].data?.blurhash, } return obj; }, {});
Object desctruct
const n = Object.keys(images || {}) .reduce((obj, key) => ({ ...obj, [key]: { downloadUrl: images[key].downloadUrl, id: images[key].id, blurhash: images[key].data?.blurhash, }, }), {});
Lodash
const n = Object.keys(images || {}) .reduce((obj, key) => ({ ...obj, [key]: { ..._.pick(images[key], ['downloadUrl', 'id']), blurhash: images[key].data?.blurhash, }, }), {});

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Optimization1
Object desctruct
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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**Benchmark Overview**

MeasureThat.net is a website that allows users to create and run JavaScript microbenchmarks, comparing the performance of different approaches for common tasks. In this case, we'll focus on a specific benchmark that tests three ways to object destructuring and create an object from key-value pairs.

**Test Cases**

There are three test cases:

1. **Optimization1**: This approach uses the `reduce` method to iterate over the keys of the `images` object and create a new object with the desired properties.
2. **Object desctruct**: This approach uses the spread operator (`...`) to create a new object with the desired properties, without using the `reduce` method.
3. **Lodash**: This approach uses the `pick` function from the Lodash library to extract specific properties from the `images[key]` objects and create a new object.

**Library: Lodash**

The Lodash library is a popular utility library for JavaScript that provides various functions for tasks like string manipulation, array manipulation, and object manipulation. In this case, the `pick` function is used to extract specific properties from an object.

**Object Destructuring Syntax**

The test cases use a syntax called "object destructuring" or "spread operator syntax". This syntax allows you to extract properties from an object into separate variables, like this:
```javascript
const n = Object.keys(images || {})
  .reduce((obj, key) => {
    obj[key] = {
      downloadUrl: images[key].downloadUrl,
      id: images[key].id,
      blurhash: images[key].data?.blurhash,
    };
    return obj;
  }, {});
```
In this syntax, `images[key]` is destructured into separate variables `downloadUrl`, `id`, and `blurhash`.

**Options Compared**

The three test cases compare the following options:

* **Optimization1**: Uses the `reduce` method to create a new object.
* **Object desctruct**: Uses the spread operator (`...`) to create a new object.
* **Lodash**: Uses the `pick` function from Lodash to extract specific properties.

**Pros and Cons**

Here's a brief summary of the pros and cons of each approach:

* **Optimization1**: Pros:
	+ Can be more efficient for large objects, since it uses the `reduce` method.
	+ Allows for more control over the object creation process.
Cons:
	+ Can be slower due to the use of the `reduce` method.
* **Object desctruct**: Pros:
	+ Faster and more concise than Optimization1.
	+ Easier to read and understand.
Cons:
	+ Limited control over the object creation process.
* **Lodash**: Pros:
	+ Fastest and most concise option.
	+ Allows for easy extraction of specific properties using Lodash functions.
Cons:
	+ Requires including Lodash in the project, which can add overhead.

**Other Alternatives**

If you're looking for alternatives to these approaches, here are a few options:

* **Using `Object.fromEntries`**: This is a newer JavaScript method that creates an object from key-value pairs. It's faster and more concise than the `reduce` method.
* **Using a loop**: Instead of using the spread operator or `reduce`, you can use a traditional `for` loop to create a new object.

Keep in mind that the best approach depends on your specific use case, performance requirements, and personal preference.

Related benchmarks:

Lodash pick vs manual object descturct8 (version: 1)

Comparing performance of: Optimization1 vs Object desctruct vs Lodash

Created: 3 years ago by: Registered User

Jump to the latest result

Optimization1

Object desctruct

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):