Benchmark: Lodash omit vs Native delete - Mav

HTML Preparation code:

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

Script Preparation code:

array = []
for(i=0; i<10000; i++) {
  array.push({ abf:'asd', message:'koko' });
}

Tests:

Native delete
array.forEach(data => { const meta = Object.assign({}, data); delete meta.message; return { message: data.message, meta } })
Lodash omit and pick
array.forEach(data => { return { message: _.pick(data, 'message'), meta: _.omit(data, 'message') } });
Lodash omit
array.forEach(data => { return { message: data.message, meta: _.omit(data, 'message') } });

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Native delete
Lodash omit and pick
Lodash omit

Fastest: N/A

Slowest: N/A

Latest run results:

No previous 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 dive into the world of JavaScript microbenchmarks on MeasureThat.net.

**Overview**

The provided benchmark compares three approaches for deleting specific properties from an object in JavaScript:

1. **Native delete**: Directly using the `delete` keyword to remove a property from an object.
2. **Lodash omit**: Using the `_.omit()` function from the Lodash library to exclude certain properties from an object.
3. **Lodash omit and pick**: Combining `_.omit()` with `_.pick()` to both exclude and include specific properties in an object.

**Options Compared**

The benchmark tests three options:

* Native delete: Directly deleting a property using the `delete` keyword.
* Lodash omit: Using `_.omit()` to remove specified properties from an object.
* Lodash omit and pick: Combining `_.omit()` with `_.pick()` to both exclude and include specific properties.

**Pros and Cons**

Here's a brief analysis of each approach:

1. **Native delete**: Pros:
	* Fastest execution time, as it bypasses the JavaScript engine's property access mechanisms.
	* Simple to use and implement.
Cons:
	* May not work as expected if the object is modified concurrently or has circular references.
	* Can lead to unexpected behavior if used in certain contexts (e.g., `delete` on an array index).
2. **Lodash omit**: Pros:
	* Flexible and powerful, allowing for complex property selection.
	* Works well with objects having nested structures.
Cons:
	* Requires the Lodash library, which may add unnecessary overhead.
	* Can be slower than native delete due to additional function calls.
3. **Lodash omit and pick**: Pros:
	* Combines the benefits of both omit and pick functions from Lodash.
	* Allows for precise control over which properties are included or excluded.

**Library Usage**

The benchmark uses the Lodash library, which provides a set of utility functions for working with JavaScript objects. In this case:

* `_.omit()` is used to exclude specified properties from an object.
* `_.pick()` is used to include specific properties in an object.
* `_` is the alias for the Lodash library.

**Special JS Features or Syntax**

The benchmark does not explicitly use any special JavaScript features or syntax. However, it's essential to note that the behavior of these approaches can be influenced by various factors, such as:

* Object property names: Using reserved keywords or non-standard characters might affect performance.
* Object references: Passing objects as arguments or modifying them concurrently could impact execution time.

**Other Alternatives**

If you're interested in exploring alternative approaches, consider the following options:

1. **Using a different library**: Other JavaScript libraries like Underscore.js, Ramda, or even built-in functions (e.g., `Object.assign()` and `Object.prototype.hasOwnProperty.call()`) might offer better performance or functionality for specific use cases.
2. **Native implementation**: Depending on your specific requirements, you can implement the desired behavior using native JavaScript functions, such as `delete` with `Object.keys()` and `hasOwnProperty`.
3. **ES6+ features**: If you're targeting modern browsers, consider utilizing ES6+ features like `Object.entries()`, `Object.fromEntries()`, or `Object.assign()` for more efficient property manipulation.

Keep in mind that each approach has its strengths and weaknesses, and the best choice depends on your specific use case, performance requirements, and personal preference.

Related benchmarks:

Lodash omit vs Native delete - Mav (version: 0)

Comparing performance of: Native delete vs Lodash omit and pick vs Lodash omit

Created: 5 years ago by: Guest

Jump to the latest result

Native delete

Lodash omit and pick

Lodash omit

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):