import { Transform } from 'stream';
export declare const isIframeSandboxDisabled: () => boolean;
export declare const hasHtml: (str: string) => boolean;
export declare const sandboxHtmlResponse: <T>(data: T, forceSandbox?: boolean) => string | T;
export declare const bufferEscapeHtml: (input: Buffer) => Buffer<ArrayBuffer>;
export declare const createHtmlSandboxTransformStream: () => Transform;
export declare const isHtmlRenderedContentType: (contentType: string) => boolean;