import { IExecuteFunctions, INodeExecutionData, INodeType, INodeTypeDescription } from 'n8n-workflow';
/**
 * Zalo Official Account Action Node
 *
 * Supports sending messages (text, image, sticker) and requesting user info
 */
export declare class ZaloOA implements INodeType {
    description: INodeTypeDescription;
    execute(this: IExecuteFunctions): Promise<INodeExecutionData[][]>;
    /**
     * Send text message
     */
    private sendTextMessage;
    /**
     * Send image message (URL or binary)
     */
    private sendImageMessage;
    /**
     * Send sticker message
     */
    private sendStickerMessage;
    /**
     * Request user info
     */
    private requestUserInfo;
    /**
     * Get OAuth2 access token from credentials
     */
    private getOAuth2AccessToken;
}