chore(deps): update dependency typescript to v2.7.1

Author: renovate-bot

package.json

@@ -18,7 +18,7 @@
     "lint-staged": "4.3.0",
     "nyc": "11.3.0",
     "prettier": "1.8.1",
-    "typescript": "2.6.1",
+    "typescript": "2.7.1",
     "webpack-node-externals": "1.6.0"
   },
   "dependencies": {

yarn.lock

@@ -3406,9 +3406,9 @@ [email protected], typed-figures@^1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/typed-figures/-/typed-figures-1.0.0.tgz#898932b2797b59532cfdf03f23ec2e2dc136126a"
 
-typescript@2.6.1:
-  version "2.6.1"
-  resolved "https://registry.yarnpkg.com/typescript/-/typescript-2.6.1.tgz#ef39cdea27abac0b500242d6726ab90e0c846631"
+typescript@2.7.1:
+  version "2.7.1"
+  resolved "https://registry.yarnpkg.com/typescript/-/typescript-2.7.1.tgz#bb3682c2c791ac90e7c6210b26478a8da085c359"
 
 [email protected]:
   version "3.1.8"