import type { MusicInfo, MusicSource } from './types.js';
export interface PendingSearch {
    readonly results: readonly MusicInfo[];
    readonly source: MusicSource;
    readonly keyword: string;
    readonly timestamp: number;
}
export declare function sessionKey(endpointId: string, conversationId: string, senderId: string): string;
export declare function resolveMessageIds(input: {
    metadata?: Record<string, unknown>;
    conversation?: {
        id?: unknown;
        endpoint?: {
            id?: unknown;
        };
    };
    sender?: {
        id?: unknown;
    };
}): {
    endpointId: string;
    conversationId: string;
    senderId: string;
} | null;
/** Generation-owned pending music selections. */
export declare class MusicSearchSessions {
    #private;
    constructor(timeoutMs?: number, now?: () => number);
    set(key: string, search: PendingSearch): void;
    get(key: string): PendingSearch | undefined;
    delete(key: string): void;
    pruneExpired(): void;
    dispose(): void;
}
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