Update yarn lockfile

Author: kourge

yarn.lock

@@ -2472,9 +2472,9 @@ type-check@~0.3.2:
   dependencies:
     prelude-ls "~1.1.2"
 
-typescript@^2.1.5:
-  version "2.1.5"
-  resolved "https://registry.yarnpkg.com/typescript/-/typescript-2.1.5.tgz#6fe9479e00e01855247cea216e7561bafcdbcd4a"
+typescript@^2.2.1:
+  version "2.2.1"
+  resolved "https://registry.yarnpkg.com/typescript/-/typescript-2.2.1.tgz#4862b662b988a4c8ff691cc7969622d24db76ae9"
 
 uglify-js@^2.6:
   version "2.7.5"