Migrated to angular 8

Created dev configuration

tsconfig.json

@@ -1,6 +1,8 @@
 {
   "compileOnSave": false,
   "compilerOptions": {
+    "downlevelIteration": true,
+    "importHelpers": true,
     "outDir": "./dist/out-tsc",
     "baseUrl": "src",
     "sourceMap": true,
@@ -8,13 +10,16 @@
     "moduleResolution": "node",
     "emitDecoratorMetadata": true,
     "experimentalDecorators": true,
-    "target": "es5",
+    "target": "es2015",
+    "resolveJsonModule": true,
+    "esModuleInterop": true,
     "typeRoots": [
       "node_modules/@types"
     ],
     "lib": [
       "es2016",
       "dom"
-    ]
+    ],
+    "module": "esnext"
   }
-}
+}