Bump to v4.1.0.

_getData.js

@@ -0,0 +1,15 @@
+import metaMap from './_metaMap';
+import noop from './noop';
+
+/**
+ * Gets metadata for `func`.
+ *
+ * @private
+ * @param {Function} func The function to query.
+ * @returns {*} Returns the metadata for `func`.
+ */
+var getData = !metaMap ? noop : function(func) {
+  return metaMap.get(func);
+};
+
+export default getData;