/**
 * The script a page outside Vite loads to join a standalone devframe, as
 * served by `lit-devtools dev` and by {@link createLitDevtools}'s handler.
 */
import type { ConnectionMeta } from 'devframe';
/**
 * `lit-devtools.js` with the server's connection descriptor prepended as
 * `globalThis.__LIT_DEVTOOLS_CONNECT__`, so the page never fetches
 * `__connection.json`: from a page on another origin that request is
 * cross-origin and gets no CORS headers. The descriptor's fields are picked,
 * not spread, so nothing else devframe puts in it rides along to any page
 * that can load a script tag.
 *
 * @param url Where the devframe answers; the page's fallback when it cannot
 *   read its own script's address.
 * @param options.dock Dock the panel in the page (see `runtime/dock.ts`).
 */
export declare const standaloneScriptResponse: (url: string, { backend, websocket, sse }: ConnectionMeta, { dock }?: {
    dock?: boolean;
}) => Promise<Response>;
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