23 lines
664 B
TypeScript
23 lines
664 B
TypeScript
import { useCallback, useRef, useState } from "react";
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/**
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* A useState hook that also returns a ref to the current state (usable in callbacks)
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*/
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export function useStateWithRef<T>(initialValue: T) {
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const [state, setState] = useState<T>(initialValue);
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const ref = useRef(state);
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return [
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state,
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useCallback((v: T | ((prevState: T) => T)) => {
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setState(prev => {
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const nextState = typeof v === "function"
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? (v as (prevState: T) => T)(prev) : v;
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ref.current = nextState;
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return nextState;
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});
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}, []),
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ref,
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] as const;
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}
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