Issues with State Not Updating After Debounced Input in React with TypeScript
I'm following best practices but I'm confused about I need some guidance on I'm working on a React application using TypeScript where I'm trying to implement a debounced input field for searching... The idea is to wait until the user has stopped typing for a specified duration before making an API call to fetch the search results. However, I'm encountering an issue where the state holding the input value does not seem to update correctly after the debounce period. I'm using the `useEffect` hook to make the API call, but the latest input value isn't reflected in the API request. Below is the relevant code snippet: ```tsx import React, { useState, useEffect } from 'react'; const SearchComponent: React.FC = () => { const [query, setQuery] = useState<string>(''); const [debouncedQuery, setDebouncedQuery] = useState<string>(''); useEffect(() => { const handler = setTimeout(() => { setDebouncedQuery(query); }, 300); return () => { clearTimeout(handler); }; }, [query]); useEffect(() => { if (debouncedQuery) { fetch(`https://api.example.com/search?q=${debouncedQuery}`) .then(response => response.json()) .then(data => { console.log(data); }) .catch(error => console.error('Error fetching data:', error)); } }, [debouncedQuery]); return ( <input type="text" value={query} onChange={(e) => setQuery(e.target.value)} placeholder="Search..." /> ); }; export default SearchComponent; ``` Even though I'm debouncing the input correctly, when I type into the input field, the logs show that it fetches the previous value instead of the latest one, which is not what I expected. I have verified that the latest value of `query` is being set in the state, but it seems like when the debounced effect runs, it still references the stale closure of the previous `query` value. I've tried using `useRef` to hold the latest value of `query`, but that didn't work either. What am I missing here? Any insights would be appreciated. What would be the recommended way to handle this? The stack includes Typescript and several other technologies. Any ideas what could be causing this? My team is using Typescript for this application. Has anyone dealt with something similar?