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							- var attributes = require("./attributes.js");
 
- var Pseudos = require("./pseudos");
 
- /*
 
- 	all available rules
 
- */
 
- module.exports = {
 
-     __proto__: null,
 
-     attribute: attributes.compile,
 
-     pseudo: Pseudos.compile,
 
-     //tags
 
-     tag: function(next, data, options) {
 
-         var name = data.name;
 
-         var adapter = options.adapter;
 
-         return function tag(elem) {
 
-             return adapter.getName(elem) === name && next(elem);
 
-         };
 
-     },
 
-     //traversal
 
-     descendant: function(next, data, options) {
 
-         // eslint-disable-next-line no-undef
 
-         var isFalseCache = typeof WeakSet !== "undefined" ? new WeakSet() : null;
 
-         var adapter = options.adapter;
 
-         return function descendant(elem) {
 
-             var found = false;
 
-             while (!found && (elem = adapter.getParent(elem))) {
 
-                 if (!isFalseCache || !isFalseCache.has(elem)) {
 
-                     found = next(elem);
 
-                     if (!found && isFalseCache) {
 
-                         isFalseCache.add(elem);
 
-                     }
 
-                 }
 
-             }
 
-             return found;
 
-         };
 
-     },
 
-     _flexibleDescendant: function(next, data, options) {
 
-         var adapter = options.adapter;
 
-         // Include element itself, only used while querying an array
 
-         return function descendant(elem) {
 
-             var found = next(elem);
 
-             while (!found && (elem = adapter.getParent(elem))) {
 
-                 found = next(elem);
 
-             }
 
-             return found;
 
-         };
 
-     },
 
-     parent: function(next, data, options) {
 
-         if (options && options.strict) {
 
-             throw new Error("Parent selector isn't part of CSS3");
 
-         }
 
-         var adapter = options.adapter;
 
-         return function parent(elem) {
 
-             return adapter.getChildren(elem).some(test);
 
-         };
 
-         function test(elem) {
 
-             return adapter.isTag(elem) && next(elem);
 
-         }
 
-     },
 
-     child: function(next, data, options) {
 
-         var adapter = options.adapter;
 
-         return function child(elem) {
 
-             var parent = adapter.getParent(elem);
 
-             return !!parent && next(parent);
 
-         };
 
-     },
 
-     sibling: function(next, data, options) {
 
-         var adapter = options.adapter;
 
-         return function sibling(elem) {
 
-             var siblings = adapter.getSiblings(elem);
 
-             for (var i = 0; i < siblings.length; i++) {
 
-                 if (adapter.isTag(siblings[i])) {
 
-                     if (siblings[i] === elem) break;
 
-                     if (next(siblings[i])) return true;
 
-                 }
 
-             }
 
-             return false;
 
-         };
 
-     },
 
-     adjacent: function(next, data, options) {
 
-         var adapter = options.adapter;
 
-         return function adjacent(elem) {
 
-             var siblings = adapter.getSiblings(elem),
 
-                 lastElement;
 
-             for (var i = 0; i < siblings.length; i++) {
 
-                 if (adapter.isTag(siblings[i])) {
 
-                     if (siblings[i] === elem) break;
 
-                     lastElement = siblings[i];
 
-                 }
 
-             }
 
-             return !!lastElement && next(lastElement);
 
-         };
 
-     },
 
-     universal: function(next) {
 
-         return next;
 
-     }
 
- };
 
 
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