updates to markdown processing to allow custom elements

src/html-sanitize.ts

@@ -2,13 +2,12 @@
 import { JSDOM } from 'jsdom';
 import createDOMPurify = require('dompurify');
 
-export function sanitize_html(html: string) : string {
+export type CustomElementHandling = createDOMPurify.Config['CUSTOM_ELEMENT_HANDLING'];
+
+export function sanitize_html(html: string, custom_elements?: CustomElementHandling) : string {
 	const { window } = new JSDOM('');
 	const dom_purify = createDOMPurify(window as any as Window);
 	return dom_purify.sanitize(html, {
-		CUSTOM_ELEMENT_HANDLING: {
-			tagNameCheck: (tag_name) => tag_name === 'svg-icon',
-			attributeNameCheck: (attr_name) => attr_name === 'icon',
-		}
+		CUSTOM_ELEMENT_HANDLING: custom_elements
 	});
 }