Only ignore lowercase JSXIdentifier in jsx-no-undef (fixes #435)

Author: yannickcr

lib/rules/jsx-no-undef.js

@@ -58,6 +58,9 @@ module.exports = function(context) {
       switch (node.name.type) {
         case 'JSXIdentifier':
           node = node.name;
+          if (isTagName(node.name)) {
+            return;
+          }
           break;
         case 'JSXMemberExpression':
           node = node.name.object;
@@ -68,9 +71,6 @@ module.exports = function(context) {
         default:
           break;
       }
-      if (isTagName(node.name)) {
-        return;
-      }
       checkIdentifierInJSX(node);
     }
   };

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

@@ -52,12 +52,17 @@ ruleTester.run('jsx-no-undef', rule, {
       message: '\'Appp\' is not defined.'
     }],
     parserOptions: parserOptions
-  },
-  {
+  }, {
     code: '/*eslint no-undef:1*/ var React; React.render(<Apppp:Foo />);',
     errors: [{
       message: '\'Apppp\' is not defined.'
     }],
     parserOptions: parserOptions
+  }, {
+    code: '/*eslint no-undef:1*/ var React; React.render(<appp.Foo />);',
+    errors: [{
+      message: '\'appp\' is not defined.'
+    }],
+    parserOptions: parserOptions
   }]
 });