fix lint errors

src/app/app.module.ts

@@ -1,4 +1,4 @@
-import {NgModule, Injector, ApplicationRef} from "@angular/core";
+import {NgModule, Injector, ApplicationRef, DoBootstrap} from "@angular/core";
 import {NgxEditorModule} from "ngx-editor";
 import {BrowserModule} from "@angular/platform-browser";
 import {createCustomElement} from "@angular/elements";
@@ -237,12 +237,12 @@ import {ActionMenuComponent} from "./view/action-menu/action-menu/action-menu.co
   ],
 })
 
-export class AppModule {
+export class AppModule implements DoBootstrap {
   constructor(private injector: Injector) {}
 
   ngDoBootstrap(appRef: ApplicationRef) {
     if (environment.customElement) {
-      const element = createCustomElement(AppComponent, { injector: this.injector });
+      const element = createCustomElement(AppComponent, {injector: this.injector});
       customElements.define("sbb-root", element);
     } else {
       appRef.bootstrap(AppComponent);

src/app/models/operation.model.ts

@@ -8,7 +8,7 @@ enum OperationType {
 }
 
 export abstract class Operation{
-    type: String;
+    type: string;
 }
 
 export class CreateTrainrunOperation extends Operation {

src/app/services/data/trainrunsection.service.ts

@@ -699,7 +699,7 @@ export class TrainrunSectionService implements OnDestroy {
     //this.trainrunSectionsUpdated();
     this.trainrunService.trainrunsUpdated();
 
-    if (initialTrainrunsLength != this.trainrunService.trainrunsStore.trainruns.length) {
+    if (initialTrainrunsLength !== this.trainrunService.trainrunsStore.trainruns.length) {
       this.operation.emit(new CreateTrainrunOperation(trainrunSection));
     } else {
       this.operation.emit(new UpdateTrainrunSectionsOperation(this.getAllTrainrunSectionsForTrainrun(trainrunSection.getTrainrunId())));

src/app/services/data/version-control.service.ts

@@ -78,11 +78,6 @@ export class VersionControlService implements OnDestroy {
     this.undoService.reset(this.undoService.getCurrentVariantId() + 1);
   }
 
-  @HostListener('window:message', ['$event']) onPostMessage(event) {
-    console.log('Message received', event);
-  }
-
-
   reload(loadModel = false): void {
     this.load(this.variant.id, loadModel);
   }