Benchmark: Plain js vs OmitBy

HTML Preparation code:

<script src="https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.11/lodash.js"></script>

Script Preparation code:

var basePalette = {
  black: undefined,
  green: null,
  orange: 'orange',
  red: null,
  darkRed: 'darkRed',
  blue: 'blue',
  lightBlue: 'lightBlue',
  navy: 'navy'
}

Tests:

Plain Js
const isNull = a => !Boolean(a) const omitBy = (obj, check) => { obj = { ...obj } Object.entries(obj).forEach(([key, value]) => check(value) && delete obj[key]) return obj } omitBy(basePalette, isNull)
LoDash OmitBy
_.omitBy(basePalette, _.isNullable )

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Plain Js
LoDash OmitBy

Fastest: N/A

Slowest: N/A

Latest run results:

Run details: (Test run date: one year ago)

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/123.0.0.0 Safari/537.36

Browser/OS: Chrome 123 on Mac OS X 10.15.7

View result in a separate tab

Test name	Executions per second
Plain Js	836439.1 Ops/sec
LoDash OmitBy	1443849.4 Ops/sec

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 its components.

**Benchmark Overview**

The benchmark compares the performance of two approaches to remove null or undefined values from an object: Plain JavaScript (without using LoDash) versus LoDash's `omitBy` function.

**Plain JavaScript Approach**

The Plain JavaScript approach uses a simple iterative method to delete properties with null or undefined values. The code is as follows:

```javascript
const isNull = a => !Boolean(a)

const omitBy = (obj, check) => {
  obj = { ...obj }
  Object.entries(obj).forEach(([key, value]) => check(value) && delete obj[key])
  return obj
}
```

**LoDash `omitBy` Function**

The LoDash `omitBy` function is a utility function that takes an object and a check function as arguments. The check function determines which properties to remove from the object. In this benchmark, the LoDash `isNullable` function is used as the check function.

```javascript
_.omitBy(basePalette, _.isNullable)
```

**Library: LoDash**

LoDash is a popular JavaScript utility library that provides various functions for tasks like data manipulation, string manipulation, and more. The `omitBy` function is one of its utility functions, designed to remove properties from an object based on a provided check function.

**Special JS Feature/Syntax: None mentioned in this benchmark**

No special JavaScript features or syntax are used in this benchmark.

**Other Alternatives**

If you're looking for alternatives to LoDash's `omitBy` function or want to implement a similar functionality without using an external library, you can use the Plain JavaScript approach or other libraries like Lodash Lite (which includes some of its utility functions), Moment.js (for date manipulation and string formatting), or even vanilla JavaScript with some custom code.

Keep in mind that while implementing from scratch might be interesting for learning purposes, using existing libraries like LoDash or Lodash Lite can save time and provide a more comprehensive set of utilities.

Related benchmarks:

Plain js vs OmitBy (version: 0)

Testing LoDash's omitBy agains plain js

Comparing performance of: Plain Js vs LoDash OmitBy

Created: 3 years ago by: Guest

Jump to the latest result

Plain Js

LoDash OmitBy

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

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