1 files changed, 45 insertions, 0 deletions
diff --git a/node_modules/fbjs/lib/isEmpty.js b/node_modules/fbjs/lib/isEmpty.js
new file mode 100644
index 000000000..1c7854c06
--- /dev/null
+++ b/node_modules/fbjs/lib/isEmpty.js
@@ -0,0 +1,45 @@
+/**
+ * Copyright (c) 2013-present, 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.
+ *
+ * 
+ */
+
+'use strict';
+
+/* eslint-disable fb-www/typeof-undefined */
+/* eslint-disable no-unused-vars */
+
+var invariant = require('./invariant');
+
+/**
+ * Checks if a value is empty.
+ */
+function isEmpty(value) {
+  if (Array.isArray(value)) {
+    return value.length === 0;
+  } else if (typeof value === 'object') {
+    if (value) {
+      !(!isIterable(value) || value.size === undefined) ? process.env.NODE_ENV !== 'production' ? invariant(false, 'isEmpty() does not support iterable collections.') : invariant(false) : void 0;
+      for (var _ in value) {
+        return false;
+      }
+    }
+    return true;
+  } else {
+    return !value;
+  }
+}
+
+function isIterable(value) {
+  if (typeof Symbol === 'undefined') {
+    return false;
+  }
+  return value[Symbol.iterator];
+}
+
+module.exports = isEmpty;
+\ No newline at end of file