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use-promise-hook
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| import { useEffect, useState } from 'react'; | |
| /** | |
| * Pass a memoized promise getter (via useCallback) so we do not attempt to | |
| * continuously re-request the promise. | |
| */ | |
| export default function usePromise(getPromise) { | |
| const [loading, setLoading] = useState(true); | |
| const [promise, setPromise] = useState(); | |
| const [error, setError] = useState(); | |
| const [result, setResult] = useState(); | |
| useEffect(() => { | |
| setPromise(getPromise()); | |
| }, [getPromise]); | |
| useEffect(() => { | |
| let mounted = true; | |
| if (promise) | |
| promise | |
| .then(res => mounted && setResult(res)) | |
| .catch(err => mounted && setError(err)) | |
| .finally(() => mounted && setLoading(false)); | |
| return () => { mounted = false; } | |
| }, [promise]); | |
| return { | |
| error, | |
| loading, | |
| result, | |
| }; | |
| } |
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