/**
 * A custom hook that compares the provided value across renders and returns the
 * previous instance if shallow equality with previous instance exists.
 *
 * This is particularly useful when non-primitive types are used as
 * dependencies for react hooks.
 *
 * @param {*} value Value to keep the same if satisfies shallow equality.
 *
 * @return {*} The previous cached instance of the value if the current has  shallow equality with it.
 */
export declare function useShallowEqual<T>(value: T): T;