/**
 * @module botbuilder
 */
/**
 * Copyright (c) Microsoft Corporation. All rights reserved.
 * Licensed under the MIT License.
 */
import { Activity } from 'botframework-schema';
import { PagedResult, TranscriptInfo, TranscriptStore } from './transcriptLogger';
/**
 * The memory transcript store stores transcripts in volatile memory in a Map.
 *
 * @remarks
 * Because this uses an unbounded volatile dictionary this should only be used for unit tests or
 * non-production environments.
 */
export declare class MemoryTranscriptStore implements TranscriptStore {
    private static readonly pageSize;
    private channels;
    /**
     * Log an activity to the transcript.
     *
     * @param activity Activity to log.
     * @returns {Promise<void>} A promise representing the async operation.
     */
    logActivity(activity: Activity): void | Promise<void>;
    /**
     * Get activities from the memory transcript store.
     *
     * @param channelId Channel Id.
     * @param conversationId Conversation Id.
     * @param continuationToken Continuation token to page through results.
     * @param startDate Earliest time to include.
     * @returns {Promise<PagedResult<Activity>>} A page of matching activities.
     */
    getTranscriptActivities(channelId: string, conversationId: string, continuationToken?: string, startDate?: Date): Promise<PagedResult<Activity>>;
    /**
     * List conversations in the channelId.
     *
     * @param channelId Channel Id.
     * @param continuationToken Continuation token to page through results.
     * @returns {Promise<PagedResult<TranscriptInfo>>} A page of conversations for a channel from the store.
     */
    listTranscripts(channelId: string, continuationToken?: string): Promise<PagedResult<TranscriptInfo>>;
    /**
     * Delete a specific conversation and all of it's activities.
     *
     * @param channelId Channel Id where conversation took place.
     * @param conversationId Id of the conversation to delete.
     * @returns {Promise<void>} A promise representing the async operation.
     */
    deleteTranscript(channelId: string, conversationId: string): Promise<void>;
}
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