Update dependency typescript to v2.8.1

Author: renovate-bot

basic/package.json

@@ -37,6 +37,6 @@
     "@angular/compiler-cli": "4.4.6",
     "codelyzer": "2.1.1",
     "tslint": "4.5.1",
-    "typescript": "2.7.2"
+    "typescript": "2.8.1"
   }
 }

basic/yarn.lock

@@ -5276,9 +5276,9 @@ typedarray@^0.0.6:
   version "0.0.6"
   resolved "https://registry.yarnpkg.com/typedarray/-/typedarray-0.0.6.tgz#867ac74e3864187b1d3d47d996a78ec5c8830777"
 
-typescript@2.7.2:
-  version "2.7.2"
-  resolved "https://registry.yarnpkg.com/typescript/-/typescript-2.7.2.tgz#2d615a1ef4aee4f574425cdff7026edf81919836"
+typescript@2.8.1:
+  version "2.8.1"
+  resolved "https://registry.yarnpkg.com/typescript/-/typescript-2.8.1.tgz#6160e4f8f195d5ba81d4876f9c0cc1fbc0820624"
 
 typescript@~2.6.2:
   version "2.6.2"