declare global {
    interface Window {
        katex?: {
            renderToString: (tex: string, options?: Record<string, unknown>) => string;
            render: (tex: string, element: HTMLElement, options?: Record<string, unknown>) => void;
        };
    }
}
export declare function ensureKatexLoaded(timeout?: number): Promise<void>;
export declare function isKatexReady(): boolean;
export declare function getKatex(): NonNullable<Window['katex']>;