type GetPreviousReturn<T> = {
    current: T;
};
/**
 * A reactive state of a given state's previous value.
 * @param getter The state as a getter function.
 * @note The state is `undefined` until the given state is updated for the first time.
 * @see https://svelte-librarian.github.io/sv-use/docs/get-previous
 */
export declare function getPrevious<T>(getter: () => T): GetPreviousReturn<T | undefined>;
/**
 * A reactive state of a given state's previous value.
 * @param getter The state as a getter function.
 * @param initial The initial value of the state.
 * @see https://svelte-librarian.github.io/sv-use/docs/get-previous
 */
export declare function getPrevious<T>(getter: () => T, initial: T): GetPreviousReturn<T>;
export {};