23 lines
730 B
TypeScript
23 lines
730 B
TypeScript
import { Dispatch, SetStateAction, useEffect, useState } from 'react';
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export function usePersistedState<S = undefined> (key: string, defaultValue: S): [S | undefined, Dispatch<SetStateAction<S | undefined>>] {
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const [ state, setState ] = useState(
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() => {
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try {
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const item = localStorage.getItem(key);
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return JSON.parse(item || (String(defaultValue)));
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} catch (e) {
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console.warn('Failed to retrieve persisted value from store.', e);
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return defaultValue;
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}
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}
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);
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useEffect(() => {
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localStorage.setItem(key, JSON.stringify(state));
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}, [ key, state ]);
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return [ state, setState ];
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}
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