/**
 * Returns a referentially stable options object that only changes identity when the
 * **content** of `options` (or `defaults`) changes.
 *
 * @remarks
 * Uses a typed structural equality check (see {@link deepEqual}) instead of `JSON.stringify`,
 * so it correctly handles:
 * - Key order: `{ a: 1, b: 2 }` and `{ b: 2, a: 1 }` are treated as equal.
 * - `undefined` values: `{ a: 1, b: undefined }` and `{ a: 1 }` are treated as **different**.
 * - Non-serialisable values (`Date`, `RegExp`, `Map`, `Set`, functions) compare by identity
 *   rather than throwing.
 *
 * Option payloads must be **acyclic** — circular references are not supported and will
 * recurse until the call stack overflows. This is by contract; option objects are POJOs.
 *
 * The merged result is cached until either input changes by content, so consumers can pass
 * inline option literals without forcing downstream `useEffect` / `useMemo` invalidations.
 *
 * @example
 * ```ts
 * const stable = useStableOptions(
 *   { service: 'com.example.app', includeValues: false },
 *   props.options
 * )
 * ```
 *
 * @internal
 */
declare const useStableOptions: <T extends object>(defaults: Partial<T>, options?: Partial<T> | null) => T;
export default useStableOptions;
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