export interface ImageEntry {
    id: string;
    image: Buffer;
    timestamp: number;
    source: string;
    groupId?: string;
    metadata?: Record<string, any>;
}
export interface ImageGroup {
    groupId: string;
    intent: string;
    source: string;
    timestamp: number;
    frameCount: number;
    summary: Record<string, any>;
}
export type ImageEntryMeta = Omit<ImageEntry, "image">;
export declare class ImageBuffer {
    private entries;
    private groups;
    private maxSize;
    constructor(maxSize?: number);
    add(entry: ImageEntry): void;
    addGroup(group: ImageGroup): void;
    getById(id: string): ImageEntry | undefined;
    getByGroupFrame(groupId: string, frameIndex: number): ImageEntry | undefined;
    listEntries(options?: {
        source?: string;
        groupId?: string;
        last?: number;
    }): ImageEntryMeta[];
    listGroups(): ImageGroup[];
    clear(): number;
    get size(): number;
    private cleanupGroupIfEmpty;
}
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