/**
 * Session Key Utilities
 *
 * Provides consistent session key generation for lane-based concurrency.
 */
import type { MessageSource } from '../gateways/types.js';
/**
 * Build a session key from message source, channel, and user
 *
 * @param source - Message source (discord, slack, chatwork, etc.)
 * @param channelId - Channel/room identifier
 * @param userId - User identifier
 * @returns Session key in format "{source}:{channelId}:{userId}"
 *
 * @example
 * ```typescript
 * buildSessionKey('discord', '123456789', '987654321')
 * // → 'discord:123456789:987654321'
 * ```
 */
export declare function buildSessionKey(source: MessageSource | string, channelId: string, userId: string): string;
/**
 * Build a channel-level session key (shared by all users in a channel)
 *
 * @param source - Message source
 * @param channelId - Channel/room identifier
 * @returns Session key in format "{source}:{channelId}"
 */
export declare function buildChannelSessionKey(source: MessageSource | string, channelId: string): string;
/**
 * Parse a session key into its components
 *
 * @param sessionKey - Session key to parse
 * @returns Parsed components or null if invalid
 */
export declare function parseSessionKey(sessionKey: string): {
    source: string;
    channelId: string;
    userId?: string;
} | null;
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