import type { LitElement } from "lit";
import type { ProxyOptions } from "../../types.js";
import type { Constructor } from "./types.js";
export declare const socketUrlContext: {
    __context__: string | undefined;
};
export declare const socketProxyContext: {
    __context__: ProxyOptions | undefined;
};
export declare class ProxyContextInterface {
    socketUrl?: string;
    socketProxy?: ProxyOptions;
}
export declare function ProxyContextMixin<T extends Constructor<LitElement>>(superclass: T): Constructor<ProxyContextInterface> & T;