RN: Cleanup OSS JS & Flow Declarations

Reviewed By: vjeux

Differential Revision: D4210763

fbshipit-source-id: 5abaa547100b8badd13bcf311ceffc5b4098d252

scripts/try-n-times.js

@@ -1,10 +1,23 @@
+/**
+ * Copyright (c) 2015-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.
+ */
+
+/* globals echo:false */
+
+'use strict';
+
 /**
  * Try executing a function n times recursively.
  * Return 0 the first time it succeeds
  * Return code of the last failed commands if not more retries left
  * @funcToRetry - function that gets retried
  * @retriesLeft - number of retries to execute funcToRetry
- * @onEveryError - func to execute if funcToRetry returns non 0 
+ * @onEveryError - func to execute if funcToRetry returns non 0
  */
 function tryExecNTimes(funcToRetry, retriesLeft, onEveryError) {
   const exitCode = funcToRetry();