Bump to v4.12.0.

_hashGet.js

@@ -13,16 +13,18 @@ var hasOwnProperty = objectProto.hasOwnProperty;
  * Gets the hash value for `key`.
  *
  * @private
- * @param {Object} hash The hash to query.
+ * @name get
+ * @memberOf Hash
  * @param {string} key The key of the value to get.
  * @returns {*} Returns the entry value.
  */
-function hashGet(hash, key) {
+function hashGet(key) {
+  var data = this.__data__;
   if (nativeCreate) {
-    var result = hash[key];
+    var result = data[key];
     return result === HASH_UNDEFINED ? undefined : result;
   }
-  return hasOwnProperty.call(hash, key) ? hash[key] : undefined;
+  return hasOwnProperty.call(data, key) ? data[key] : undefined;
 }
 
 export default hashGet;