import { RefObject } from "react";
import { MessageItem } from "@droppii-org/wasm-client-sdk";
export declare const MESSAGE_LIST_BOTTOM_THRESHOLD = -5;
export interface MessageListLoadState {
    initLoading: boolean;
    hasMoreOld: boolean;
    hasMoreNew: boolean;
    messageList: MessageItem[];
}
interface UseMessageListScrollParams {
    conversationId?: string;
    userId?: string;
    isGroupChat?: boolean;
    loadState: MessageListLoadState;
    latestLoadState: RefObject<MessageListLoadState | null>;
    moreOldLoading: boolean;
    moreNewLoading: boolean;
    getMoreOldMessages: () => void | Promise<unknown>;
    getMoreNewMessages: () => void | Promise<unknown>;
    /** Holds mark-as-read back while the first-unread lookup is still pending. */
    markAsReadBlocked?: boolean;
    /** Tells the user a search jump target was recalled (deduped with the search load). */
    notifyRevokedTarget?: (clientMsgID: string) => void;
}
export declare const useMessageListScroll: ({ conversationId, userId, isGroupChat, loadState, latestLoadState, moreOldLoading, moreNewLoading, getMoreOldMessages, getMoreNewMessages, markAsReadBlocked, notifyRevokedTarget, }: UseMessageListScrollParams) => {
    scrollRef: RefObject<HTMLDivElement>;
    handleMarkConversationMessageAsRead: () => void;
    loadMoreOldMessage: () => void;
    handleInfiniteScroll: (e: React.UIEvent<HTMLDivElement>) => void;
    scrollToBottom: () => void;
    scrollToBottomIfAtBottom: () => void;
    scrollToMessage: (clientMsgID: string) => void;
};
export {};
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