/**
 * useEffect(
 *    ()=> { ... },
 *    [ { "foo": "bar" } ]
 * )
 * => The callback will be invoked every render.
 * because { "foo": "bar" } is a new instance every render.
 *
 * useEffect(
 *    ()=> { ... },
 *    [ getDependencyArrayRef({ "foo": "bar" }) ]
 * );
 * => The callback will only be invoked once.
 *
 * The optimization will be enabled only if obj is
 * of the form Record<string, string | number | undefined | null>
 * otherwise the object is returned (the function is the identity function).
 */
export declare function getDependencyArrayRef(obj: any): any;