Fix.

node_modules/parse5/lib/utils/mixin.js

@@ -1,18 +0,0 @@
-'use strict';
-
-var Mixin = module.exports = function (host) {
-    var originalMethods = {},
-        overriddenMethods = this._getOverriddenMethods(this, originalMethods);
-
-    Object.keys(overriddenMethods).forEach(function (key) {
-        if (typeof overriddenMethods[key] === 'function') {
-            originalMethods[key] = host[key];
-            host[key] = overriddenMethods[key];
-        }
-    });
-};
-
-Mixin.prototype._getOverriddenMethods = function () {
-    throw new Error('Not implemented');
-};
-