import type { FolderName, OpfsKey, UrlString } from './types.js';
import { type OpfsMetadata } from './opfsFormat.js';
export interface WriteToOpfsOptions {
    folderName: FolderName;
    url?: UrlString;
    knownSize?: number;
    excludeKeyFromEviction?: OpfsKey;
}
export declare function writeToOpfs(dir: FileSystemDirectoryHandle, key: OpfsKey, bodyStream: ReadableStream<Uint8Array>, metadata: OpfsMetadata, options: WriteToOpfsOptions): Promise<void>;
export declare function metadataFromResponse(response: Response, url: UrlString): OpfsMetadata;