react-create-class -> create-react-class

package.json

@@ -40,7 +40,7 @@
     "coffee-script": "^1.8.0",
     "core-js": "^2.2.1",
     "coveralls": "^2.11.6",
-    "create-react-class": "15.5.0",
+    "create-react-class": "^15.5.0",
     "del": "^2.0.2",
     "derequire": "^2.0.3",
     "eslint": "^3.10.2",

src/isomorphic/React.js

@@ -122,6 +122,20 @@ if (__DEV__) {
         return ReactPropTypes;
       },
     });
+
+    Object.defineProperty(React, 'createClass', {
+      get: function() {
+        warning(
+          warnedForCreateClass,
+          'React.createClass is no longer supported. Use a plain JavaScript ' +
+            "class instead. If you're not yet ready to migrate, " +
+            'create-react-class is available on npm as a temporary, ' +
+            'drop-in replacement.',
+        );
+        didWarnPropTypesDeprecated = true;
+        return ReactPropTypes;
+      },
+    });
   }
 
   // React.DOM factories are deprecated. Wrap these methods so that

src/isomorphic/__tests__/React-test.js

@@ -37,4 +37,18 @@ describe('React', () => {
       'React.createMixin is deprecated and should not be used',
     );
   });
+
+  it('should warn once when attempting to access React.createClass', () => {
+    spyOn(console, 'error');
+    let createClass = React.createClass;
+    createClass = React.createClass;
+    expect(createClass).toBe(undefined);
+    expectDev(console.error.calls.count()).toBe(1);
+    expectDev(console.error.calls.argsFor(0)[0]).toContain(
+      'React.createClass is no longer supported. Use a plain ' +
+        "JavaScript class instead. If you're not yet ready to migrate, " +
+        'create-react-class is available on npm as a temporary, ' +
+        'drop-in replacement.',
+    );
+  });
 });