/**
 * @module node-opcua-address-space
 *
 * Ready-made {@link NodesetSource} values for the common places a NodeSet2 document comes
 * from. Each is lazy: nothing is opened or fetched until the loader reaches the document, and
 * the same value can be given to a later load. The file helpers live in the Node.js build
 * (`nodesetSourceFromFile`, `nodesetSourceFromGzipFile`); these two need nothing but the
 * platform and serve the browser build too.
 */
import type { NamedNodesetSource, NodesetChunkStream } from "./nodeset_source.js";
/** a document from anything that opens a stream of chunks, under a name for error messages */
export declare function nodesetSourceFromStream(name: string, open: () => NodesetChunkStream): NamedNodesetSource;
export interface NodesetSourceFromUrlOptions {
    /** passed to `fetch`: headers, credentials, a signal */
    init?: RequestInit;
    /**
     * whether the body is gzip and must be inflated here. `fetch` inflates a response that
     * carries `Content-Encoding: gzip` on its own; this is for a `.gz` file served as is.
     * @default true when the url path ends in `.gz`
     */
    gzip?: boolean;
}
/**
 * a document fetched from a URL when the loader gets to it. A response that is not ok rejects
 * the load with the status and the url; nothing is retried.
 */
export declare function nodesetSourceFromUrl(url: string, options?: NodesetSourceFromUrlOptions): NamedNodesetSource;