fix(Auth): Import Foundation to fix compile error (#514)

palpatim · web-flow · commit 73af3dad28f1 · 2020-06-03T09:49:37.000-07:00
diff --git a/AmplifyPlugins/Core/AWSPluginsCore/Auth/Provider/AuthAWSCredentialsProvider.swift b/AmplifyPlugins/Core/AWSPluginsCore/Auth/Provider/AuthAWSCredentialsProvider.swift
@@ -6,6 +6,7 @@
 //
 
 import Amplify
+import Foundation
 
 public protocol AuthAWSCredentialsProvider {
     func getAWSCredentials() -> Result<AuthAWSCredentials, AuthError>
