Benchmark: lodash_ps performance

HTML Preparation code:

<script src='https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.21/lodash.min.js'></script>

Script Preparation code:

var testArray = [{
  description: 'Random description.',
  testNumber: 123456789,
  testBoolean: true,
  testObject: {
    testString: 'test string',
    testNumber: 12345
  },
  testArray: [{
    myName: 'test name',
    myNumber: 123245
  }]
},{
  description: 'Random description.',
  testNumber: 123456789,
  testBoolean: true,
  testObject: {
    testString: 'test string',
    testNumber: 12345
  },
  testArray: [{
    myName: 'test name',
    myNumber: 123245
  }]
}];

var testCopy = null;

var deepClone = function(obj) {
   var out;
    if (Array.isArray(obj)) {
        out = [];
        for (var index = 0; index < obj.length; ++index) {
            let subArray = obj[index];
            out.push((subArray === null) ? subArray : (subArray instanceof Date) ? new Date(subArray.valueOf()) : (typeof subArray === 'object') ? deepClone(subArray) : subArray);
        }
    } else {
        out = {};
        for (var key in obj) {
            var subObject = obj[key];
            out[key] = subObject === null ? subObject : subObject instanceof Date ? new Date(subObject.valueOf()) : (typeof subObject === 'object') ? deepClone(subObject) : subObject;
            
           
        }
    }
    return out;
};

Tests:

lodash
testCopy = _.cloneDeep(testArray);
lodash again
testCopy = _.cloneDeep(testArray);

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
lodash
lodash again

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.

Let's break down the provided JSON and explain what is being tested.

**Benchmark Definition**

The benchmark definition represents a JavaScript microbenchmark that tests the performance of cloning an object using different approaches. The main test case uses Lodash, a popular utility library for functional programming in JavaScript.

**Options Compared**

There are two options compared:

1. `lodash.cloneDeep(testArray)`: This method clones the entire `testArray` object, including its nested objects and arrays.
2. `testCopy = _.cloneDeep(testArray);`: This is a shorthand assignment that assigns the result of `_.cloneDeep(testArray)` to a variable named `testCopy`.

**Pros and Cons**

**Lodash (`.cloneDeep()`)**

Pros:

* Well-tested and widely used utility library
* Provides a standardized way to clone objects in JavaScript
* Handles nested objects, arrays, and dates correctly

Cons:

* Adds an external dependency on Lodash
* May introduce overhead due to the need to import and initialize the library

**Shorthand Assignment (`testCopy = _.cloneDeep(testArray);`)**

Pros:

* Simplifies the cloning process by assigning the result directly to a variable
* Reduces the number of lines in the code

Cons:

* Can make the code harder to read and understand, as it's not immediately clear that an assignment is being made instead of a function call
* May lead to confusion if someone else doesn't recognize this shorthand notation

**Other Considerations**

* The benchmark measures the performance of cloning objects using different approaches. This suggests that the goal is to determine which method is faster and more efficient.
* The use of Lodash implies that the author wants to leverage the library's expertise in handling complex data structures.

**Alternative Approaches**

If you don't want to use Lodash, you can implement your own cloning function using JavaScript's built-in methods, such as `JSON.parse(JSON.stringify(obj))` or a recursive function like `deepClone()` (similar to the one provided in the benchmark). Keep in mind that these approaches may not handle all edge cases correctly and might be slower than using Lodash.

In conclusion, this benchmark compares two options for cloning objects: using the full `_.cloneDeep()` method from Lodash or a shorthand assignment. The results will indicate which approach is faster and more efficient, helping to determine the best way to clone objects in your codebase.

Related benchmarks:

lodash_ps performance (version: 0)

Comparing performance of: lodash vs lodash again

Created: 3 years ago by: Guest

Jump to the latest result

lodash

lodash again

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):