17 lines
661 B
JavaScript
17 lines
661 B
JavaScript
import _slicedToArray from "@babel/runtime/helpers/esm/slicedToArray";
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import * as React from 'react';
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export default function useSyncState(defaultState, onChange) {
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var stateRef = React.useRef(defaultState);
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var _React$useState = React.useState({}),
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_React$useState2 = _slicedToArray(_React$useState, 2),
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forceUpdate = _React$useState2[1];
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function setState(updater) {
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var newValue = typeof updater === 'function' ? updater(stateRef.current) : updater;
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if (newValue !== stateRef.current) {
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onChange(newValue, stateRef.current);
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}
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stateRef.current = newValue;
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forceUpdate({});
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}
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return [stateRef.current, setState];
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} |