import { Chat } from "../../types/research";
export declare function useHistoryState(): {
    chats: Chat[];
    sortedChats: Chat[];
    displayChats: Chat[];
    loading: boolean;
    pinnedIds: string[];
    togglePin: (e: React.MouseEvent, chatId: string) => void;
    incognito: boolean;
    toggleIncognito: () => void;
    searchQuery: string;
    searchResults: Chat[];
    searching: boolean;
    handleSearchChange: (query: string) => void;
    deleteDialogOpen: boolean;
    setDeleteDialogOpen: import("react").Dispatch<import("react").SetStateAction<boolean>>;
    chatToDelete: string;
    setChatToDelete: import("react").Dispatch<import("react").SetStateAction<string>>;
    deleting: boolean;
    handleDeleteClick: (e: React.MouseEvent, chatId: string) => void;
    handleConfirmDelete: () => Promise<void>;
    clearAllDialogOpen: boolean;
    setClearAllDialogOpen: import("react").Dispatch<import("react").SetStateAction<boolean>>;
    clearingAll: boolean;
    handleClearAllClick: () => void;
    handleConfirmClearAll: () => Promise<void>;
};