Issue : rewrite class components into functional components with Hooks #219

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1. Waseemkhan09 commented on Aug 7, 2025

   

   Waseemkhan09

   on Aug 7, 2025

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   Thanks for raising this! Refactoring legacy class components into modern functional components with Hooks is a great way to improve maintainability and future-proof your codebase. Here's a step-by-step approach to handle the transition, especially for complex lifecycle and state management scenarios:

   1. Identify Class Components

   • Use search tools or ESLint plugins to find all class components in the codebase.
   • Prioritize based on complexity or frequency of updates.

   2. Map Lifecycle Methods to Hooks

   Class Lifecycle Method	Functional Component Hook Equivalent
   componentDidMount	useEffect(() => { /* mount logic */ }, [])
   componentDidUpdate	useEffect(() => { /* update logic */ }, [dependencies])
   componentWillUnmount	Cleanup function inside useEffect
   	useEffect(() => { return () => { /* cleanup */ } }, [])

   3. Refactor State Management

   • Replace this.state with useState hooks:

     const [state, setState] = useState(initialState);

   • Replace this.setState with the state updater functions:

   setState(newState);
   
   ### 4. Convert Methods and Bindings
   -Move class methods into plain functions inside the component body.
   -Since there is no this context in functional components, just call functions directly.
   -For event handlers, define functions inline or use useCallback for memoization if needed.
   
   ### 5, Additional Tips
   -for side effects that depend on props or state, specify the right dependencies array to avoid unwanted re-renders.
   -Use useRef to persist values across renders without causing updates.
   -Consider breaking down very large components into smaller functional components for better readability and testability.