import type { FileSystemServerOptions } from '../../../types/internal-types.js';
import type { RouteRendererBody } from '../../../types/public-types.js';
/**
 * Builds HTTP responses for static files and shared file-system fallbacks.
 */
export declare class FileSystemServerResponseFactory {
    private options;
    constructor({ options }: {
        options: FileSystemServerOptions;
    });
    isHtml(contentType: string): contentType is "text/html";
    shouldEnableGzip(contentType: string): boolean;
    createResponseWithBody(body: RouteRendererBody, init?: ResponseInit): Promise<Response>;
    createDefaultNotFoundResponse(): Promise<Response>;
    /**
     * Wraps already-rendered HTML in a 404 response envelope.
     */
    createHtmlNotFoundResponse(body: RouteRendererBody): Promise<Response>;
    createDefaultServerErrorResponse(): Promise<Response>;
    /**
     * Wraps already-rendered HTML in a 500 response envelope.
     */
    createHtmlServerErrorResponse(body: RouteRendererBody): Promise<Response>;
    /**
     * Reads a static file response, returning `null` when the file is missing.
     */
    createFileResponse(filePath: string, contentType: string): Promise<Response | null>;
}