Fixed linting problems and build of demo package

Author: vratojr

demo/package.json

@@ -10,7 +10,7 @@
   },
   "dependencies": {
     "firebase-functions": "^2.0.5",
-    "nativescript-plugin-firebase": "file:../publish/package/nativescript-plugin-firebase-7.3.0.tgz",
+    "nativescript-plugin-firebase": "file:../publish/package/nativescript-plugin-firebase-7.3.1.tgz",
     "nativescript-theme-core": "^1.0.4",
     "nativescript-unit-test-runner": "^0.3.4",
     "tns-core-modules": "^4.2.1"
@@ -37,4 +37,4 @@
     "build.plugin": "cd ../src && npm run build",
     "ci.tslint": "npm i && tslint --config '../tslint.json' 'app/**/*.ts' --exclude '**/node_modules/**' --exclude '**/typings/**'"
   }
-}
+}

src/firebase.android.ts

@@ -312,7 +312,7 @@ firebase.init = arg => {
         const firebaseAuth = com.google.firebase.auth.FirebaseAuth.getInstance();
 
         if (arg.onAuthStateChanged) {
-          firebase.addAuthStateListener(arg.onAuthStateChanged)
+          firebase.addAuthStateListener(arg.onAuthStateChanged);
         }
 
         // Listen to auth state changes

src/firebase.ios.ts

@@ -1572,18 +1572,18 @@ firebase.firestore.WriteBatch = (nativeWriteBatch: FIRWriteBatch): firestore.Wri
       fixSpecialFields(data);
       nativeWriteBatch.setDataForDocumentMerge(<any>data, documentRef.ios, options && options.merge);
       return this;
-    };
+    }
 
     public update = (documentRef: firestore.DocumentReference, data: firestore.UpdateData): firestore.WriteBatch => {
       fixSpecialFields(data);
       nativeWriteBatch.updateDataForDocument(<any>data, documentRef.ios);
       return this;
-    };
+    }
 
     public delete = (documentRef: firestore.DocumentReference): firestore.WriteBatch => {
       nativeWriteBatch.deleteDocument(documentRef.ios);
       return this;
-    };
+    }
 
     commit(): Promise<void> {
       return new Promise<void>((resolve, reject) => {