/**
 * Bridge between @dnd-kit/state (Preact signals) and Svelte 5 reactivity.
 *
 * Uses a hybrid push-pull strategy:
 * - Pull: A Proxy tracks which properties the template actually reads
 * - Push: A single @dnd-kit/state effect watches only tracked properties
 *   and bumps a single $state dirty counter when any change
 * - Read: Getters read `dirty` (so Svelte subscribes) then return
 *   the current value from the instance
 */
export declare function createDeepSignal<T extends object | null | undefined>(getTarget: () => T): {
    readonly current: T;
};
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