/**
 * A server render calls this with the session path of the early session read
 * its document starts, and the document request handler starts that read from
 * the top of `<head>`. Rendered in the body instead, the script waits for every
 * stylesheet above it to load. Absent outside that handler's render.
 */
export declare const SsrSessionBootstrapContext: import("react").Context<((sessionPath: string) => void) | null>;
export declare function getSsrSessionBootstrapScriptTag(sessionPath: string): string;