import { NgModule } from '@angular/core'; import { Routes, RouterModule } from '@angular/router'; import { VisualizationPageComponent } from './visualization-page/visualization-page.component'; import { MainPageComponent } from './main-page/main-page.component'; import { UploadPageComponent } from './upload-page/upload-page.component'; import { HelpPageComponent } from './help-page/help-page.component'; const routes: Routes = [ { path: '', component: MainPageComponent}, { path: 'vis', component: VisualizationPageComponent }, { path: 'upload', component: UploadPageComponent }, { path: 'help', component: HelpPageComponent }, // { path: '**', component: PageNotFoundComponent } ]; @NgModule({ imports: [ RouterModule.forRoot(routes, {}) ], //declarations: [VisualizationPageComponent], declarations: [], exports: [RouterModule] }) export class AppRoutingModule { }