Fix jsx-no-undef crash on objects (fixes #469)

Author: yannickcr

lib/rules/jsx-no-undef.js

@@ -66,7 +66,10 @@ module.exports = function(context) {
           }
           break;
         case 'JSXMemberExpression':
-          node = node.name.object;
+          node = node.name;
+          do {
+            node = node.object;
+          } while (node && node.type !== 'JSXIdentifier');
           break;
         case 'JSXNamespacedName':
           node = node.name.namespace;

tests/lib/rules/jsx-no-undef.js

@@ -39,6 +39,12 @@ ruleTester.run('jsx-no-undef', rule, {
   }, {
     code: '/*eslint no-undef:1*/ var React; React.render(<x-gif />);',
     parserOptions: parserOptions
+  }, {
+    code: '/*eslint no-undef:1*/ var React, app; React.render(<app.Foo />);',
+    parserOptions: parserOptions
+  }, {
+    code: '/*eslint no-undef:1*/ var React, app; React.render(<app.foo.Bar />);',
+    parserOptions: parserOptions
   }],
   invalid: [{
     code: '/*eslint no-undef:1*/ var React; React.render(<App />);',
@@ -64,5 +70,11 @@ ruleTester.run('jsx-no-undef', rule, {
       message: '\'appp\' is not defined.'
     }],
     parserOptions: parserOptions
+  }, {
+    code: '/*eslint no-undef:1*/ var React; React.render(<appp.foo.Bar />);',
+    errors: [{
+      message: '\'appp\' is not defined.'
+    }],
+    parserOptions: parserOptions
   }]
 });