react app

react-app/node_modules/react/lib/cx.js

@@ -0,0 +1,52 @@
+/**
+ * Copyright 2013-2015, Facebook, Inc.
+ * All rights reserved.
+ *
+ * This source code is licensed under the BSD-style license found in the
+ * LICENSE file in the root directory of this source tree. An additional grant
+ * of patent rights can be found in the PATENTS file in the same directory.
+ *
+ * @providesModule cx
+ */
+
+/**
+ * This function is used to mark string literals representing CSS class names
+ * so that they can be transformed statically. This allows for modularization
+ * and minification of CSS class names.
+ *
+ * In static_upstream, this function is actually implemented, but it should
+ * eventually be replaced with something more descriptive, and the transform
+ * that is used in the main stack should be ported for use elsewhere.
+ *
+ * @param string|object className to modularize, or an object of key/values.
+ *                      In the object case, the values are conditions that
+ *                      determine if the className keys should be included.
+ * @param [string ...]  Variable list of classNames in the string case.
+ * @return string       Renderable space-separated CSS className.
+ */
+
+'use strict';
+var warning = require("./warning");
+
+var warned = false;
+
+function cx(classNames) {
+  if ("production" !== process.env.NODE_ENV) {
+    ("production" !== process.env.NODE_ENV ? warning(
+      warned,
+      'React.addons.classSet will be deprecated in a future version. See ' +
+      'http://fb.me/react-addons-classset'
+    ) : null);
+    warned = true;
+  }
+
+  if (typeof classNames == 'object') {
+    return Object.keys(classNames).filter(function(className) {
+      return classNames[className];
+    }).join(' ');
+  } else {
+    return Array.prototype.join.call(arguments, ' ');
+  }
+}
+
+module.exports = cx;