import * as PropertySymbol from '../PropertySymbol.js'; import HTMLElementVoid from '../config/HTMLElementVoid.js'; import HTMLElementUnnestable from '../config/HTMLElementUnnestable.js'; import NamespaceURI from '../config/NamespaceURI.js'; import HTMLElementPlainText from '../config/HTMLElementPlainText.js'; import * as Entities from 'entities'; /** * Markup RegExp. * * Group 1: Beginning of start tag (e.g. "div" in "