import collapse from './collapse-whitespace'; export default function(fragment: string): Document { const html = `${fragment}`; const tree = new DOMParser().parseFromString(html, 'text/html'); collapse(tree.documentElement, isBlock); return tree; } function isBlock(node: Node) { // these blocks are mainly used to collapse whitespace between the blocks // (preventing spurious text nodes of ' ') switch (node.nodeName.toUpperCase()) { case 'ADDRESS': case 'ARTICLE': case 'ASIDE': case 'AUDIO': case 'BLOCKQUOTE': case 'BODY': case 'CANVAS': case 'CENTER': case 'DD': case 'DIR': case 'DIV': case 'DL': case 'DT': case 'FIELDSET': case 'FIGCAPTION': case 'FIGURE': case 'FOOTER': case 'FORM': case 'FRAMESET': case 'H1': case 'H2': case 'H3': case 'H4': case 'H5': case 'H6': case 'HEADER': case 'HGROUP': case 'HR': case 'HTML': case 'ISINDEX': case 'LI': case 'MAIN': case 'MENU': case 'NAV': case 'NOFRAMES': case 'NOSCRIPT': case 'OL': case 'OUTPUT': case 'P': case 'PRE': case 'SECTION': case 'TABLE': case 'TBODY': case 'TD': case 'TFOOT': case 'TH': case 'THEAD': case 'TR': case 'UL': return true; } return false; }