/**
 * Pure deduplication logic for decision questions.
 * Filters out questions whose `id` is already in the surfaced set.
 * Questions without an `id` (inline-generated) are always passed through.
 */
interface QuestionLike {
    id?: string;
    [key: string]: unknown;
}
export declare function deduplicateQuestions<T extends QuestionLike>(questions: T[], surfacedIds: Set<string>): {
    fresh: T[];
    newIds: string[];
};
export {};