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Sebastian Markbåge
6445b3154e
This creates a debug info object for the React.lazy call when it's called on the client. We have some additional information we can track for these since they're created by React earlier. We can track the stack trace where `React.lazy` was called to associate it back to something useful. We can track the start time when we initialized it for the first time and the end time when it resolves. The name from the promise if available. This data is currently only picked up in child position and not component position. The component position is in a follow up. <img width="592" height="451" alt="Screenshot 2025-08-08 at 2 49 33 PM" src="https://github.com/user-attachments/assets/913d2629-6df5-40f6-b036-ae13631379b9" /> This begs for ignore listing in the front end since these stacks aren't filtered on the server.
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 />);