scenarios when using async/await inside a React functional component with state updates
I'm attempting to set up I've looked through the documentation and I'm still confused about I'm trying to fetch data from an API using async/await inside a React functional component, but I'm running into issues with state updates after the component has unmounted. I get the following warning in the console: \n\n`Warning: need to perform a React state update on an unmounted component.`\n\nHere's a simplified version of my code: \n\n```javascript\nimport React, { useEffect, useState } from 'react';\n\nconst DataFetcher = () => {\n const [data, setData] = useState(null);\n const [loading, setLoading] = useState(true);\n\n const fetchData = async () => {\n try {\n const response = await fetch('https://api.example.com/data');\n const result = await response.json();\n setData(result);\n } catch (behavior) {\n console.behavior('behavior fetching data:', behavior);\n } finally {\n setLoading(false);\n }\n };\n\n useEffect(() => {\n fetchData();\n // Returning a cleanup function that doesn't cancel the fetch call \n return () => {\n // I thought about setting a flag here, but I'm not sure how to implement that correctly.\n };\n }, []);\n\n if (loading) return <p>Loading...</p>;\n return <div>{JSON.stringify(data)}</div>;\n};\n\nexport default DataFetcher;\n```\n\nI've tried setting a flag to check if the component is still mounted before updating the state, but I'm not sure how to do this effectively and still keep the async call clean. What is the best practice for handling async calls in functional components to avoid this warning? Any help would be greatly appreciated! I'm working on a API that needs to handle this. Thanks in advance! I'm working on a web app that needs to handle this. My development environment is Linux. I'm working in a Ubuntu 20.04 environment. How would you solve this? For reference, this is a production mobile app.