/**
 * Merges multiple props objects with intelligent composition.
 * - Event handlers (on*): composed — both called in sequence
 * - class: merged via clsx
 * - style: deep-merged for objects, last-wins for strings
 * - Ref symbols: composed (both called)
 * - Tracked values: unwrapped only when needed for merging (class, style, events),
 *   passed through as-is for all other props to preserve reactivity
 * - Later sources override earlier ones for non-composable props
 * @param  {...Record<string | symbol, any>} sources
 * @returns {Record<string | symbol, any>}
 */
export declare function mergeProps(...sources: Record<string | symbol, any>[]): Record<string | symbol, any>;