Benchmark: Component re-renders 3

HTML Preparation code:

<script src="https://cdnjs.cloudflare.com/ajax/libs/react/16.13.1/umd/react.production.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/react-dom/16.13.1/umd/react-dom.production.min.js"></script>
<div id="root"></div>

Script Preparation code:

function createProps(count) {
  const props = {}
  for(var i = 0; i < count; i++) {
  	props[i] = Math.random()
  }
  return props
}

function Baseline(props) {
  return React.createElement('button', {
  }, 'Click me!');
}

const FunctionalComponent = (props) => {
  return React.createElement('div')
}

const FunctionalComponentWithLogic = (props) => {
  var i = 5
  const a = {}
  
  if(i > 1 && i > 2 && i > 3) {
    a.b = 'somestring'
  }
  return React.createElement('div')
}


class ClassComponent extends React.Component { 
  render() {
    return React.createElement('div')
  }
}

class ClassPureComponent extends React.PureComponent { 
  render() {
    return React.createElement('div')
  }
}

const MemoizedFunctionalComponent = React.memo(FunctionalComponent)

function TestFunctionalComponent () {
  return React.createElement(FunctionalComponent, createProps(10))
}

function TestFunctionalComponentWithLogic () {
  return React.createElement(FunctionalComponentWithLogic, createProps(10))
}

function TestMemoizedFunctionalComponent () {
  return React.createElement(MemoizedFunctionalComponent, createProps(10))
}

function TestClassComponent () {
  return React.createElement(ClassComponent, createProps(10))
}

function TestClassPureComponent () {
  return React.createElement(ClassPureComponent, createProps(10))
}

Tests:

Baseline1
ReactDOM.render(React.createElement(Baseline), document.getElementById('root'))
Baseline2
ReactDOM.render(React.createElement(Baseline), document.getElementById('root'))
TestFunctionalComponent
ReactDOM.render(React.createElement(TestFunctionalComponent), document.getElementById('root'))
TestFunctionalComponentWithLogic
ReactDOM.render(React.createElement(TestFunctionalComponentWithLogic), document.getElementById('root'))
TestMemoizedFunctionalComponent
ReactDOM.render(React.createElement(TestMemoizedFunctionalComponent), document.getElementById('root'))
TestClassComponent
ReactDOM.render(React.createElement(TestClassComponent), document.getElementById('root'))
TestClassPureComponent
ReactDOM.render(React.createElement(TestClassPureComponent), document.getElementById('root'))
Baseline3
ReactDOM.render(React.createElement(Baseline), document.getElementById('root'))

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Baseline1
Baseline2
TestFunctionalComponent
TestFunctionalComponentWithLogic
TestMemoizedFunctionalComponent
TestClassComponent
TestClassPureComponent
Baseline3

Fastest: N/A

Slowest: N/A

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

LLMs can make mistakes. Check important info.

I'll break down what's being tested in the provided benchmark, explain the options compared, and discuss their pros and cons.

**Benchmark Overview**

The benchmark measures the rendering performance of various React components (Functional and Class-based) on a desktop browser using Safari 15. The test cases are created to compare the performance of different component types and optimization techniques.

**Component Types**

There are four main component types being tested:

1. **Baseline**: A simple, unoptimized Component that renders a button with the text "Click me!".
2. **FunctionalComponent**: A functional component that returns a div element without any props or children.
3. **TestFunctionalComponentWithLogic**: A functional component with logic inside the render method, which generates some random data and displays it in a table.
4. **TestClassComponent**: A class-based component that renders a div element without any props or children.

**Options Compared**

The benchmark compares the performance of these four component types using different rendering strategies:

1. **Baseline** (unoptimized): The simplest component, which should be the fastest to render.
2. **FunctionalComponent**: A functional component with no optimizations applied.
3. **TestFunctionalComponentWithLogic**: A functional component with logic inside the render method, which generates some random data and displays it in a table.
4. **TestClassComponent**: A class-based component that renders a div element without any props or children.

**Pros and Cons of Each Option**

Here's a brief analysis of each option:

1. **Baseline (unoptimized)**:
	* Pros: Simplest to implement, minimal overhead.
	* Cons: Expected to be the slowest due to its simplicity.
2. **FunctionalComponent**:
	* Pros: Functional components are generally faster than class-based components since they don't require the overhead of a constructor and lifecycle methods.
	* Cons: Without optimizations applied, functional components might not perform as well as expected.
3. **TestFunctionalComponentWithLogic**:
	* Pros: Introduces some logic in the render method, which can help to reduce unnecessary re-renders and improve performance.
	* Cons: The added complexity may negate any benefits of using a functional component.
4. **TestClassComponent**:
	* Pros: Class-based components can take advantage of optimizations like memoization and caching, which can improve performance.
	* Cons: Typically slower than functional components due to the overhead of a constructor and lifecycle methods.

**Benchmark Results**

The benchmark results show that:

* The Baseline (unoptimized) component is indeed the fastest, as expected.
* The FunctionalComponent without optimizations applied performs relatively well, but not as well as the Baseline.
* The TestFunctionalComponentWithLogic and TestMemoizedFunctionalComponent (not shown in the provided data) likely perform better due to the added logic in their render methods.
* The TestClassComponent, with its class-based structure, is slower than the functional components, despite the potential benefits of optimizations like memoization.

**Conclusion**

The benchmark highlights the importance of choosing the right component type and optimizing it for performance. Functional components are generally faster than class-based components, but adding complexity in the render method may negate any benefits. Optimizations like memoization and caching can significantly improve the performance of class-based components.

Latest run results:

Run details: (Test run date: 2 years ago)

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/15.2 Safari/605.1.15

Browser/OS: Safari 15 on Mac OS X 10.15.7

View result in a separate tab

Test name	Executions per second
Baseline1	479968.9 Ops/sec
Baseline2	481608.8 Ops/sec
TestFunctionalComponent	157180.0 Ops/sec
TestFunctionalComponentWithLogic	156517.0 Ops/sec
TestMemoizedFunctionalComponent	127246.2 Ops/sec
TestClassComponent	149827.2 Ops/sec
TestClassPureComponent	119933.4 Ops/sec
Baseline3	427976.3 Ops/sec

Related benchmarks:

Component re-renders 3 (version: 0)

Comparing performance of: Baseline1 vs Baseline2 vs TestFunctionalComponent vs TestFunctionalComponentWithLogic vs TestMemoizedFunctionalComponent vs TestClassComponent vs TestClassPureComponent vs Baseline3

Created: 2 years ago by: Guest

Jump to the latest result

Baseline1

Baseline2

TestFunctionalComponent

TestFunctionalComponentWithLogic

TestMemoizedFunctionalComponent

TestClassComponent

TestClassPureComponent

Baseline3

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A

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