import { AIPersistence, ArtifactRecord, BlobGetOptions, BlobObject } from './types.js';
/**
 * Look up a persisted generation artifact's metadata by id. Returns `null` when
 * the persistence has no `artifacts` store or no record matches — so a serve
 * handler can map that straight to a 404.
 */
export declare function retrieveArtifact(persistence: AIPersistence, artifactId: string): Promise<ArtifactRecord | null>;
/**
 * Look up a persisted generation artifact's stored bytes. Pass an `artifactId`
 * (resolved to its record first) or an already-loaded {@link ArtifactRecord}
 * (no second metadata lookup). Returns `null` when the artifact, its record, or
 * its blob is missing, or the stores are not configured.
 *
 * Pass `options.range` to read one slice — how a serve route answers a `Range`
 * request with `206` + `Content-Range` instead of the whole file, which is what
 * `<video>` seeking is built on. Resolve the range against `record.size` and
 * reply `416` yourself when it does not fit; the store is handed satisfiable
 * ranges only. The returned object's `range` reports the slice actually served.
 */
export declare function retrieveBlob(persistence: AIPersistence, artifact: string | ArtifactRecord, options?: BlobGetOptions): Promise<BlobObject | null>;