/**
 * Stores and returns the previous value of a state or prop.
 *
 * @template T - Type of the stored value
 * @param value - The current value
 * @returns The previous value or `undefined` on the first render
 *
 * @example
 * const prevCount = usePrevious(count);
 */
export declare const usePrevious: <T>(value: T) => T | undefined;
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