import { Dict } from "./types.js";
/**
 * Common message utilities
 * Provides helper methods for message formatting and transformation
 */
export declare namespace MessageUtils {
    /**
     * Format event payload with common fields
     * Removes internal fields and normalizes data
     */
    function formatEventPayload(payload: Dict): Dict;
    /**
     * Normalize sender information
     * Ensures user_id is extracted from sender object if needed
     */
    function normalizeSender(data: Dict): Dict;
    /**
     * Create self info object
     */
    function createSelfInfo(platform: string, userId: string | number): Dict;
    /**
     * Add reply element to message
     * Handles both V11 and V12 formats
     */
    function addReplyToMessage<V extends string>(message: Dict[], messageId: string | number, version: V, detailType?: string): Dict[];
    /**
     * Clean internal fields from payload
     * Removes fields like group, member, discuss, friend which are internal
     */
    function cleanInternalFields(payload: Dict, fieldsToRemove?: string[]): Dict;
    /**
     * Extract message content as plain text
     * Recursively extracts text from message segments
     */
    function extractPlainText(message: unknown): string;
    /**
     * Validate message format
     */
    function isValidMessage(message: unknown): boolean;
    /**
     * Create message event payload
     */
    function createMessageEvent(type: "message", detailType: string, data: Dict): Dict;
    /**
     * Create notice event payload
     */
    function createNoticeEvent(noticeType: string, data: Dict): Dict;
    /**
     * Create request event payload
     */
    function createRequestEvent(requestType: string, data: Dict): Dict;
}