/**
 * Copyright(c) Microsoft Corporation.All rights reserved.
 * Licensed under the MIT License.
 */
import { z } from 'zod';
/**
 * Enum representing activity types.
 */
export declare enum ActivityTypes {
    /**
     * A message activity.
     */
    Message = "message",
    /**
     * An update to a contact relationship.
     */
    ContactRelationUpdate = "contactRelationUpdate",
    /**
     * An update to a conversation.
     */
    ConversationUpdate = "conversationUpdate",
    /**
     * A typing indicator activity.
     */
    Typing = "typing",
    /**
     * Indicates the end of a conversation.
     */
    EndOfConversation = "endOfConversation",
    /**
     * An event activity.
     */
    Event = "event",
    /**
     * An invoke activity.
     */
    Invoke = "invoke",
    /**
     * A response to an invoke activity.
     */
    InvokeResponse = "invokeResponse",
    /**
     * An activity to delete user data.
     */
    DeleteUserData = "deleteUserData",
    /**
     * An update to a message.
     */
    MessageUpdate = "messageUpdate",
    /**
     * A deletion of a message.
     */
    MessageDelete = "messageDelete",
    /**
     * An update to an installation.
     */
    InstallationUpdate = "installationUpdate",
    /**
     * A reaction to a message.
     */
    MessageReaction = "messageReaction",
    /**
     * A suggestion activity.
     */
    Suggestion = "suggestion",
    /**
     * A trace activity for debugging.
     */
    Trace = "trace",
    /**
     * A handoff activity to another bot or human.
     */
    Handoff = "handoff",
    /**
     * A command activity.
     */
    Command = "command",
    /**
     * A result of a command activity.
     */
    CommandResult = "commandResult"
}
/**
 * Zod schema for validating an ActivityTypes enum.
 */
export declare const activityTypesZodSchema: z.ZodEnum<["message", "contactRelationUpdate", "conversationUpdate", "typing", "endOfConversation", "event", "invoke", "invokeResponse", "deleteUserData", "messageUpdate", "messageDelete", "installationUpdate", "messageReaction", "suggestion", "trace", "handoff", "command", "commandResult"]>;