Files
react/packages/react
Sebastian Markbåge 4e9540e3c2 [Fiber] Log the Render/Commit phases and the gaps in between (#31016)
A slight behavior change here too is that I now mark the start of the
commit phase before the BeforeMutationEffect phase. This affects
`<Profiler>` too.

The named sequences are as follows:

Render -> Suspended or Throttled -> Commit -> Waiting for Paint ->
Remaining Effects

The Suspended phase is only logged if we delay the Commit due to CSS /
images.

The Throttled phase is only logged if we delay the commit due to the
Suspense throttling timer.

<img width="1246" alt="Screenshot 2024-09-20 at 9 14 23 PM"
src="https://github.com/user-attachments/assets/8d01f444-bb85-472b-9b42-6157d92c81b4">

I don't yet log render phases that don't complete. I think I also need
to special case renders that or don't commit after being suspended.
2024-09-23 14:09:48 -04:00
..

react

React is a JavaScript library for creating user interfaces.

The react package contains only the functionality necessary to define React components. It is typically used together with a React renderer like react-dom for the web, or react-native for the native environments.

Note: by default, React will be in development mode. The development version includes extra warnings about common mistakes, whereas the production version includes extra performance optimizations and strips all error messages. Don't forget to use the production build when deploying your application.

Usage

import { useState } from 'react';
import { createRoot } from 'react-dom/client';

function Counter() {
  const [count, setCount] = useState(0);
  return (
    <>
      <h1>{count}</h1>
      <button onClick={() => setCount(count + 1)}>
        Increment
      </button>
    </>
  );
}

const root = createRoot(document.getElementById('root'));
root.render(<Counter />);

Documentation

See https://react.dev/

API

See https://react.dev/reference/react