import { type QuestionImage, type StagedQuestionImage } from "../protocol.js";
import type { SqliteDatabase } from "../db/database.js";
export declare class ImageError extends Error {
    readonly code: string;
    readonly retryable: boolean;
    constructor(code: string, message: string, retryable?: boolean);
}
export declare class ImageStore {
    private db;
    readonly directory: string;
    private now;
    readonly instanceId: string;
    private decoding;
    constructor(db: SqliteDatabase, directory: string, now: () => number, instanceId: string);
    stage(bytes: Buffer, declaredType: string, sessionId: string): Promise<{
        uploadId: string;
    }>;
    commit(questionId: string, revision: number, sessionId: string, images: StagedQuestionImage[]): void;
    copy(questionId: string, from: number, to: number): void;
    gallery(questionId: string, revision: number): QuestionImage[];
    read(imageId: string): {
        bytes: Buffer;
        mediaType: string;
        etag: string;
    } | undefined;
    prune(): void;
}
//# sourceMappingURL=imageStore.d.ts.map