import type { ICSSGridMorphOptions, ICSSGridMorphAPI } from '../Morph.types';
/**
 * Hook for CSS Grid-based expand/collapse animations.
 *
 * Uses the `grid-template-rows: 0fr/1fr` technique for smooth height
 * animations without needing to know the content height in advance.
 *
 * CSS required on container:
 * ```css
 * .morph-container {
 *   display: grid;
 *   grid-template-rows: 0fr;
 *   transition: grid-template-rows 300ms ease;
 * }
 * .morph-container.expanded {
 *   grid-template-rows: 1fr;
 * }
 * .morph-content {
 *   overflow: hidden;
 * }
 * ```
 *
 * @param options - Duration and easing overrides
 * @returns Grid morph API with expand, collapse, toggle, and container ref
 *
 * @example
 * ```tsx
 * const { isExpanded, toggle, containerRef } = useCSSGridMorph();
 *
 * return (
 *   <div ref={containerRef} className={isExpanded ? 'expanded' : ''}>
 *     <div className="morph-content">Collapsible content</div>
 *   </div>
 * );
 * ```
 */
export declare function useCSSGridMorph(options?: ICSSGridMorphOptions): ICSSGridMorphAPI;
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