import { IWhiteList } from 'xss';
export declare const svgHtmlAllowList: IWhiteList;
/**
 * Default Allowed SVG elements and attributes
 *
 * @returns Array of allowed elements and attributes for SVG tags.
 */
export declare const svgAllowList: IWhiteList;
/**
 * These SVG attributes can be abused.
 *
 * They can reference external resources, which can be used to introduce vulnerabilities.
 * To prevent this, we have stricter rules around what's allowed in them.
 * Specifically, we only allow URLs that we deem to be clean.
 *
 * @see isHrefValueClean
 */
export declare const linkingSVGElements: string[];
/**
 * Check if a URL is safe to use in a href attribute.
 *
 * @param {string} url The URL to check.
 * @param {boolean} checkingUse Whether we are checking a <use> tag.
 *
 * @returns {boolean} Whether the URL is safe to use.
 */
export declare const isHrefValueClean: (url: string, checkingUse?: boolean) => boolean;