feat(frontend): update typescript to 2.4.1

Author: kucharzyk

shardis-frontend/package.json

@@ -62,7 +62,7 @@
     "rimraf": "2.6.1",
     "ts-node": "3.1.0",
     "tslint": "5.4.3",
-    "typescript": "2.3.4",
+    "typescript": "2.4.1",
     "yarn": "0.24.6"
   },
   "scripts": {

shardis-frontend/yarn.lock

@@ -5628,6 +5628,10 @@ typescript@2.3.4, "typescript@>=2.0.0 <2.4.0":
   version "2.3.4"
   resolved "https://registry.yarnpkg.com/typescript/-/typescript-2.3.4.tgz#3d38321828231e434f287514959c37a82b629f42"
 
+typescript@2.4.1:
+  version "2.4.1"
+  resolved "https://registry.yarnpkg.com/typescript/-/typescript-2.4.1.tgz#c3ccb16ddaa0b2314de031e7e6fee89e5ba346bc"
+
 uglify-js@3.0.x:
   version "3.0.9"
   resolved "https://registry.yarnpkg.com/uglify-js/-/uglify-js-3.0.9.tgz#974c5e638f5e2348f8509f0233667caedd52d813"