Update TypeScript to v2.5.

Author: epatters

package.json

@@ -38,6 +38,6 @@
     "postcss-loader": "^2.0.6",
     "source-map-loader": "^0.2.1",
     "style-loader": "^0.18.2",
-    "typescript": "^2.4.1"
+    "typescript": "^2.5.3"
   }
 }

yarn.lock

@@ -3006,9 +3006,9 @@ tweetnacl@^0.14.3, tweetnacl@~0.14.0:
   version "0.14.5"
   resolved "https://registry.yarnpkg.com/tweetnacl/-/tweetnacl-0.14.5.tgz#5ae68177f192d4456269d108afa93ff8743f4f64"
 
-typescript@^2.4.1:
-  version "2.5.2"
-  resolved "https://registry.yarnpkg.com/typescript/-/typescript-2.5.2.tgz#038a95f7d9bbb420b1bf35ba31d4c5c1dd3ffe34"
+typescript@^2.5.3:
+  version "2.5.3"
+  resolved "https://registry.yarnpkg.com/typescript/-/typescript-2.5.3.tgz#df3dcdc38f3beb800d4bc322646b04a3f6ca7f0d"
 
 ua-parser-js@^0.7.9:
   version "0.7.14"