declare module 'react-dom' {
    function flushSync<R>(callback: () => R): R;
}
/**
 * 現在の画面幅がモバイル幅かどうかを返す
 */
export declare function useMediaScreen1(): boolean;
/**
 * Returns a dynamically-updating media query result.
 *
 * When the media query's matching state changes, this hook's result
 * will update with sync priority.
 *
 * @param query A full media query (the string written between `@media` and the `{` in CSS)
 * @returns true if the query matches, false if it doesn't
 */
export declare function useMedia(query: string): boolean;
export interface ElementSize {
    width: number;
    height: number;
}
export declare function useElementSize(ref: React.RefObject<Element | null>, deps?: any[]): ElementSize | undefined;
/**
 * Debounce version of setState with `requestAnimationFrame`
 *
 * @param defaultValue Default value for `useState`
 */
export declare function useDebounceAnimationState<T>(defaultValue: T): [T, (value: T, force?: boolean) => void];
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