npm and error messages

node_modules/sockjs-client/lib/utils/browser.js

@@ -0,0 +1,27 @@
+'use strict';
+
+module.exports = {
+  isOpera: function() {
+    return global.navigator &&
+      /opera/i.test(global.navigator.userAgent);
+  }
+
+, isKonqueror: function() {
+    return global.navigator &&
+      /konqueror/i.test(global.navigator.userAgent);
+  }
+
+  // #187 wrap document.domain in try/catch because of WP8 from file:///
+, hasDomain: function () {
+    // non-browser client always has a domain
+    if (!global.document) {
+      return true;
+    }
+
+    try {
+      return !!global.document.domain;
+    } catch (e) {
+      return false;
+    }
+  }
+};