Benchmark: lodash isplainobject vs typeof object

HTML Preparation code:

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

Script Preparation code:

var x = {'this': 'is', 'a': 'test', 'object': 52 }

Tests:

lodash
var y = _.isPlainObject(x)
typeof
var y = (typeof(x) === 'object') && !Array.isArray(x) && (x !== null)

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
lodash
typeof

Fastest: N/A

Slowest: N/A

Latest run results:

Run details: (Test run date: 3 months ago)

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:147.0) Gecko/20100101 Firefox/147.0

Browser/OS: Firefox 147 on Mac OS X 10.15

View result in a separate tab

Test name	Executions per second
lodash	12117156.0 Ops/sec
typeof	125581816.0 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 provided benchmarking scenario.

**Benchmarking Context**

MeasureThat.net is a website that allows users to create and run JavaScript microbenchmarks. The goal of this platform is to compare the performance of different JavaScript libraries, functions, or approaches on various devices and browsers.

**Benchmark Definition JSON**

The provided JSON represents a benchmark definition with two test cases:

1. `lodash isPlainObject vs typeof object`
2. `lodash` and `typeof`

**Test Case 1: `lodash isPlainObject vs typeof object`**

This test case compares the performance of two approaches to check if an object is plain:

a. Using Lodash's `isPlainObject()` function
b. Using a custom implementation with `typeof`, `[x]`, and `!== null`

**Comparison Options**

The comparison options are:

* Lodash's `isPlainObject()`
	+ Pros:
		- Easy to use and maintain
		- Fast execution (assuming optimized native code)
	+ Cons:
		- Requires an external library (Lodash) for performance
		- May have additional overhead due to function call and parameter passing
* Custom implementation with `typeof`, `[x]`, and `!== null`
	+ Pros:
		- No additional dependencies or libraries required
		- May be optimized for specific use cases
	+ Cons:
		- Requires manual optimization and testing
		- More prone to errors and regressions

**Test Case 2: `lodash` and `typeof`**

This test case measures the performance of two approaches:

a. Using Lodash's `isPlainObject()` function (same as in Test Case 1)
b. Using a custom implementation with `typeof`, `[x]`, and `!== null` (same as in Test Case 1)

**Library: Lodash**

Lodash is a popular JavaScript library that provides a set of utility functions for various tasks, including array manipulation, object creation, and more. In this benchmark, Lodash's `isPlainObject()` function is used to check if an object is plain.

In the context of this benchmark, Lodash's `isPlainObject()` function serves as a baseline performance measure. By comparing it with custom implementations or alternative approaches, MeasureThat.net aims to identify optimization opportunities and provide insights into the trade-offs between different coding styles.

**Special JS Feature/Syntax: None**

This benchmark does not explicitly test any special JavaScript features or syntax.

**Alternative Approaches**

Some alternative approaches for checking if an object is plain could include:

* Using `Object.prototype.toString()` and parsing the result
* Utilizing a helper function with bitwise operations (e.g., `Object.isExtensible()`, `Object.getPrototypeOf()`)
* Leveraging modern JavaScript features, such as `Symbol.hasOwn()` or `WeakSet`

Keep in mind that these alternatives may have varying performance characteristics, depending on the specific use case and implementation details.

Related benchmarks:

lodash isplainobject vs typeof object (version: 0)

Comparing performance of: lodash vs typeof

Created: 2 years ago by: Guest

Jump to the latest result

lodash

typeof

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

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