/**
 * Calculate a percentage-based rootMargin for IntersectionObserver.
 * This helper uses a 0-100 percentage offset; AnimateOptions.offset uses pixels.
 *
 * @param {number} [offset] - Percentage offset (0-100). 0 = bottom of viewport touches top of element, 100 = top of viewport touches top of element
 * @param {string} [rootMargin] - Custom rootMargin string (takes precedence over offset)
 * @returns {string} rootMargin string for IntersectionObserver
 */
export function calculateRootMargin(offset?: number, rootMargin?: string): string;
/**
 * Animation utilities
 * Type definitions have been moved to types.js for single source of truth
 */
/**
 * All available animation types in the library: primary names plus the
 * v2.x legacy aliases that are still preserved.
 * @type {readonly import('./types.js').AnimationType[]}
 */
export const ANIMATION_TYPES: readonly import("./types.js").AnimationType[];