Unexpected Behavior with Class Properties in React Functional Components Using TypeScript
Hey everyone, I'm running into an issue that's driving me crazy. I'm sure I'm missing something obvious here, but I'm experiencing unexpected behavior when trying to use a TypeScript class to manage state within a React functional component... I have a class that is intended to handle some complex logic and maintain state, but when I instantiate this class in my functional component, I'm facing issues with its properties not updating as I expected. Here's the relevant part of the code: ```typescript class StateHandler { private stateValue: number; constructor(initialValue: number) { this.stateValue = initialValue; } public increment() { this.stateValue++; } public getState() { return this.stateValue; } } const MyComponent: React.FC = () => { const [stateHandler] = React.useState(new StateHandler(0)); const handleIncrement = () => { stateHandler.increment(); console.log(stateHandler.getState()); // Expecting incremented value }; return <button onClick={handleIncrement}>Increment</button>; }; ``` The issue I'm facing is that when I click the button, the logged value does not reflect the incremented state. Instead, it seems to always log `0`, which is the initial value set in the state handler. I expected `stateValue` to be updated when `increment` is called, but it seems like the state is not being retained across renders. I’ve tried using the `useEffect` hook to force a re-render when the class property changes, but since the state is encapsulated inside the class, it doesn’t cause a re-render of the component. I also considered using functional components' state management instead of a class, but I really want to keep this logic inside a class for better organization. Is there a recommended way to handle this situation or any design pattern that would allow me to effectively manage state with a class in a functional React component? What am I missing here? Is there a better approach? Any pointers in the right direction?