export declare const unescapeHTML: (str: string) => string;
export declare const replaceVhInContent: (content: string) => string;
/**
 * 转义 HTML 属性值中的引号，防止破坏 HTML 属性
 * @param value 需要转义的属性值
 * @returns 转义后的值
 */
export declare function escapeHtmlAttribute(value: string): string;
export declare function createSrcContent(content: string, iframeId: string, unsafe: boolean, extra: Record<string, unknown>): string;