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34 lines
835 B
JavaScript
34 lines
835 B
JavaScript
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import { useReducer } from 'react';
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/**
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* Create a state setter pair for a boolean value that can be "switched".
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* Unlike `useState(false)`, `useToggleState` will automatically flip the state
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* value when its setter is called with no argument.
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*
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* @param initialState The initial boolean value
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* @returns A tuple of the current state and a setter
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*
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* ```jsx
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* const [show, toggleShow] = useToggleState(false)
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*
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* return (
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* <>
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* <button onClick={() => toggleShow()}>
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* Toggle
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* <button>
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*
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* {show && <strong>Now you can see me</strong>}
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* </>
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* )
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*
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* ```
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*/
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export default function useToggleState(initialState) {
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if (initialState === void 0) {
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initialState = false;
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}
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return useReducer(function (state, action) {
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return action == null ? !state : action;
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}, initialState);
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}
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