documentAdapter оформлен как класс

node_modules/jsdom/lib/jsdom/browser/documentAdapter.js

@@ -2,72 +2,75 @@
 
 const idlUtils = require("../living/generated/utils");
 
-// Tree traversing
-exports.getFirstChild = function (node) {
-  return node.childNodes[0];
-};
-
-exports.getChildNodes = function (node) {
-  // parse5 treats template elements specially, assuming you return an array whose single item is the document fragment
-  const children = node._templateContents ? [node._templateContents] : [];
-  if (children.length === 0) {
-    for (let i = 0; i < node.childNodes.length; ++i) {
-      children.push(idlUtils.implForWrapper(node.childNodes[i]));
+class DocumentAdapter {
+  getFirstChild (node) {
+    return node.childNodes[0];
+  }
+
+  getChildNodes (node) {
+    // parse5 treats template elements specially, assuming you return an array whose single item is the document fragment
+    const children = node._templateContents ? [node._templateContents] : [];
+    if (children.length === 0) {
+      for (let i = 0; i < node.childNodes.length; ++i) {
+        children.push(idlUtils.implForWrapper(node.childNodes[i]));
+      }
     }
+    return children;
+  }
+
+  getParentNode (node) {
+    return node.parentNode;
+  }
+
+  getAttrList (node) {
+    return node.attributes;
+  }
+
+  // Node data
+  getTagName (element) {
+    return element.tagName.toLowerCase();
   }
-  return children;
-};
-
-exports.getParentNode = function (node) {
-  return node.parentNode;
-};
-
-exports.getAttrList = function (node) {
-  return node.attributes;
-};
-
-// Node data
-exports.getTagName = function (element) {
-  return element.tagName.toLowerCase();
-};
-
-exports.getNamespaceURI = function (element) {
-  return element.namespaceURI || "http://www.w3.org/1999/xhtml";
-};
-
-exports.getTextNodeContent = function (textNode) {
-  return textNode.nodeValue;
-};
-
-exports.getCommentNodeContent = function (commentNode) {
-  return commentNode.nodeValue;
-};
-
-exports.getDocumentTypeNodeName = function (doctypeNode) {
-  return doctypeNode.name;
-};
-
-exports.getDocumentTypeNodePublicId = function (doctypeNode) {
-  return doctypeNode.publicId || null;
-};
-
-exports.getDocumentTypeNodeSystemId = function (doctypeNode) {
-  return doctypeNode.systemId || null;
-};
-
-// Node types
-exports.isTextNode = function (node) {
-  return node.nodeName === "#text";
-};
-
-exports.isCommentNode = function (node) {
-  return node.nodeName === "#comment";
-};
-
-exports.isDocumentTypeNode = function (node) {
-  return node.nodeType === 10;
-};
-
-exports.isElementNode = function (node) {
-  return Boolean(node.tagName);
-};
+
+  getNamespaceURI (element) {
+    return element.namespaceURI || "http://www.w3.org/1999/xhtml";
+  }
+
+  getTextNodeContent (textNode) {
+    return textNode.nodeValue;
+  }
+
+  getCommentNodeContent (commentNode) {
+    return commentNode.nodeValue;
+  }
+
+  getDocumentTypeNodeName (doctypeNode) {
+    return doctypeNode.name;
+  }
+
+  getDocumentTypeNodePublicId (doctypeNode) {
+    return doctypeNode.publicId || null;
+  }
+
+  getDocumentTypeNodeSystemId (doctypeNode) {
+    return doctypeNode.systemId || null;
+  }
+
+  // Node types
+  isTextNode (node) {
+    return node.nodeName === "#text";
+  }
+
+  isCommentNode (node) {
+    return node.nodeName === "#comment";
+  }
+
+  isDocumentTypeNode (node) {
+    return node.nodeType === 10;
+  }
+
+  isElementNode (node) {
+    return Boolean(node.tagName);
+  }
+}
+
+module.exports = DocumentAdapter;