import type { ArkmeLocalFile } from './file-transfer-contract.js';
export declare const GENERATED_ARTIFACT_PREFIX = "arkme-generated-v1";
/** Immutable request-generated downloads. No upload queue, reception manifest,
 * source-file staging limit or user-controlled path participates in this store. */
export declare class GeneratedArtifacts {
    private readonly directory;
    private readonly currentUser;
    private readonly sourceRevision?;
    private readonly format;
    private active;
    private readonly codec;
    constructor(directory: string, secret: () => Promise<string>, currentUser: () => Promise<number>, sourceRevision?: ((signal?: AbortSignal) => Promise<number>) | undefined, format?: {
        prefix: string;
        extension: string;
        mimeType: string;
    });
    create<T>(userId: number, fileName: string, produce: (write: (text: string | Uint8Array) => Promise<void>) => Promise<T>, signal?: AbortSignal): Promise<{
        file: {
            fileRef: string;
            fileName: string;
            size: number;
            expiresAtMillis: number;
        };
        result: T;
    }>;
    read(ref: string, signal?: AbortSignal): Promise<{
        path: string;
        file: ArkmeLocalFile;
    }>;
    private cleanup;
}
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