| 1 | import { useReducer } from 'react';
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| 2 |
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| 3 | /**
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| 4 | * Create a state setter pair for a boolean value that can be "switched".
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| 5 | * Unlike `useState(false)`, `useToggleState` will automatically flip the state
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| 6 | * value when its setter is called with no argument.
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| 7 | *
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| 8 | * @param initialState The initial boolean value
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| 9 | * @returns A tuple of the current state and a setter
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| 10 | *
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| 11 | * ```jsx
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| 12 | * const [show, toggleShow] = useToggleState(false)
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| 13 | *
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| 14 | * return (
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| 15 | * <>
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| 16 | * <button onClick={() => toggleShow()}>
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| 17 | * Toggle
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| 18 | * <button>
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| 19 | *
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| 20 | * {show && <strong>Now you can see me</strong>}
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| 21 | * </>
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| 22 | * )
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| 23 | *
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| 24 | * ```
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| 25 | */
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| 26 | export default function useToggleState(initialState = false) {
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| 27 | return useReducer((state, action) => action == null ? !state : action, initialState);
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| 28 | } |
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