Enable strict mode

Author: brunolm

src/app/about/about-store.service.ts

@@ -5,7 +5,16 @@ import { action, observable } from 'mobx-angular';
   providedIn: 'root',
 })
 export class AboutStoreService {
-  @observable title = 'about:hello world';
+  @observable title: string;
+
+  constructor() {
+    this.initialize();
+  }
+
+  @action
+  private initialize() {
+    this.title = 'about:hello world';
+  }
 
   @action
   randomTitle() {

src/app/app.component.ts

@@ -1,6 +1,7 @@
 import { NgReduxRouter, routerReducer } from '@angular-redux/router';
 import { DevToolsExtension, NgRedux } from '@angular-redux/store';
 import { Component } from '@angular/core';
+import { configure } from 'mobx';
 import { combineReducers } from 'redux';
 import thunk from 'redux-thunk';
 
@@ -30,6 +31,7 @@ export class AppComponent {
       this.devTools.isEnabled() ? [this.devTools.enhancer()] : undefined,
     );
     this.ngReduxRouter.initialize();
+    configure({ enforceActions: 'strict' });
   }
 
   createReducer(ReducerService) {