/**
 * Utilities for handling SSR errors gracefully
 */
/**
 * Extract HTTP status code from an error object.
 * Looks for a `status` property that is a number or parseable string.
 * Returns 500 if no valid status found.
 */
export declare function getErrorStatus(error: unknown): number;
/**
 * Escape HTML special characters to prevent XSS
 */
export declare function escapeHtml(str: string): string;
export interface RenderErrorPageOptions {
    /** Show stack trace in output */
    showStack?: boolean;
    /** Additional hint message to display */
    hint?: string;
    /** Badge text to display (e.g., "DEV MODE") */
    badge?: string;
}
/**
 * Render an HTML error page for SSR failures
 */
export declare function renderErrorPage(error: unknown, url: string, statusCode: number, options?: RenderErrorPageOptions): string;
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