declare global {
    var __SSR_RENDERED__: boolean | undefined;
    var __SSR_REACT_STREAMING__: boolean | undefined;
    interface Window {
        __SSR_REACT_STREAMING__?: boolean;
        __SSR_RENDERED__?: boolean;
    }
}
/** Returns true if React SSR streaming is actually active at runtime. */
export declare function isSSRStreaming(): boolean;
