fix: .d.ts file displayed by debugger instead of .ts source.

refs #509

angular.json

@@ -104,7 +104,12 @@
           "builder": "@angular-devkit/build-angular:dev-server",
           "options": {
             "browserTarget": "ngHyd:build",
-            "aot": true
+            "aot": true,
+            "sourceMap": {
+              "scripts": true,
+              "styles": true,
+              "vendor": true
+            }
           },
           "configurations": {
             "production": {
@@ -193,4 +198,4 @@
   "cli": {
     "analytics": false
   }
-}
\ No newline at end of file
+}