export declare const DEFAULT_ARTIFACT_PAGE_BYTES: number;
export declare const MAX_FULL_ARTIFACT_EXPORT_BYTES: number;
export interface ArtifactPage {
    readonly body: string;
    readonly offset: number;
    readonly nextOffset: number;
    readonly totalBytes: number;
    readonly pageNumber: number;
    readonly pageCount: number;
}
export interface ArtifactPagerSource {
    readonly path: string;
    readonly pageBytes: number;
    readPage(offset: number): Promise<ArtifactPage>;
    search(query: string, fromOffset?: number, reverse?: boolean): Promise<ArtifactPage | undefined>;
    readAll(): Promise<string>;
    dispose(): void;
    /** Last page of the file as it is right now. */
    readTail?(): Promise<ArtifactPage>;
    /**
     * Present only on sources backed by something that can still grow. The pager
     * treats its presence as "offer follow mode" and drives one bounded tail read
     * per notification, so no polling timer is created.
     */
    watch?(onChange: () => void): () => void;
    /** False once the underlying producer is finished, so follow mode can stop. */
    isGrowing?(): boolean;
}
export declare function createArtifactPagerSource(path: string, pageBytes?: number): ArtifactPagerSource;