Benchmark: Lodash vs Native JS: omit

HTML Preparation code:

<script src="https://cdn.jsdelivr.net/npm/lodash@4.17.15/lodash.min.js"></script>

Script Preparation code:

var data = {};
for(var i=0; i<10; i++){
  data[`key${i}`] = i;
}

var keysToOmit = [];
for(i=0; i<9; i++){
  keysToOmit.push(`key${i}`);
}

Tests:

Lodash _.omit()
_.omit(data, keysToOmit)
Native JS solution
var {key0, key1, key2, key3, key4, key5, key6, key7, key8, ...result} = data;

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Lodash _.omit()
Native JS solution

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 benchmark and explain what's being tested.

**What is being tested?**

The benchmark compares two approaches to remove specific keys from an object:

1. Using Lodash's `_.omit` function
2. A native JavaScript solution using destructuring assignment

**Options compared:**

* **Lodash _.omit**: This function takes an object and an array of keys to omit as arguments, returning a new object with the specified keys removed.
* **Native JS solution (using destructuring)**: This approach uses destructuring assignment to extract specific values from the object, effectively removing the unwanted keys.

**Pros and cons of each approach:**

* **Lodash _.omit**: Pros:
	+ Concise and readable code
	+ Handles complex objects with nested properties
* Cons:
	+ Requires an additional library (Lodash)
	+ May have performance overhead due to function call
* **Native JS solution (using destructuring)**: Pros:
	+ No additional library required
	+ Often faster than function calls, as it's a direct operation on the object
* Cons:
	+ Can be less readable for complex objects or large datasets
	+ May require more code and setup

**Library used:**

The benchmark uses Lodash version 4.17.15, which is a popular utility library for JavaScript.

**Special JS feature/syntax:**

This benchmark doesn't use any special JavaScript features or syntax. However, it does rely on the fact that modern browsers support ES6+ features like destructuring assignment.

**Other alternatives:**

If you don't want to use Lodash, there are other libraries available that provide similar functionality, such as `omit` in Ramda or `pick` in Moment.js. Alternatively, you can use a custom implementation of the _.omit function without an external library.

In terms of native JavaScript solutions, you could consider using `Object.fromEntries` and `Array.from` to achieve a similar result:
```javascript
var {key0, key1, key2, key3, key4, key5, key6, key7, key8, ...result} = Object.fromEntries(
  Array(9)
    .fill(null)
    .map((_, i) => [`key${i}`, null])
);
```
This approach would be even more concise than the native JavaScript solution using destructuring, but might still have some performance overhead due to function calls.

Related benchmarks:

Lodash vs Native JS: omit (version: 0)

Comparison of _.omit and JS native suggestion

Comparing performance of: Lodash _.omit() vs Native JS solution

Created: 6 years ago by: Guest

Jump to the latest result

Lodash _.omit()

Native JS solution

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):