Update dependency typescript to v3.4.2

package-lock.json

@@ -14233,9 +14233,9 @@
       "dev": true
     },
     "typescript": {
-      "version": "3.4.1",
-      "resolved": "https://registry.npmjs.org/typescript/-/typescript-3.4.1.tgz",
-      "integrity": "sha512-3NSMb2VzDQm8oBTLH6Nj55VVtUEpe/rgkIzMir0qVoLyjDZlnMBva0U6vDiV3IH+sl/Yu6oP5QwsAQtHPmDd2Q==",
+      "version": "3.4.2",
+      "resolved": "https://registry.npmjs.org/typescript/-/typescript-3.4.2.tgz",
+      "integrity": "sha512-Og2Vn6Mk7JAuWA1hQdDQN/Ekm/SchX80VzLhjKN9ETYrIepBFAd8PkOdOTK2nKt0FCkmMZKBJvQ1dV1gIxPu/A==",
       "dev": true
     },
     "uglify-js": {

package.json

@@ -64,7 +64,7 @@
     "tslint-config-semistandard": "7.0.0",
     "tslint-react": "4.0.0",
     "typed-css-modules": "0.4.2",
-    "typescript": "3.4.1",
+    "typescript": "3.4.2",
     "url-loader": "1.1.2",
     "webpack": "4.28.0",
     "webpack-bundle-analyzer": "3.1.0",