npm run ionic:build --prod giving strange error

Question

When I am trying to run npm run ionic:build --prod, it is giving me below errors:

Error: Cannot determine the module for class OverlayPortal in F:/D/IONIC/quicktask/quicktask-web-froala/node_modules/ionic-angular/umd/components/app/overlay-portal.d.ts! Add OverlayPortal to the NgModule to fix it. Cannot determine the module for class IonicApp in F:/D/IONIC/quicktask/quicktask-web-froala/node_modules/ionic-angular/umd/components/app/app-root.d.ts! Add IonicApp to the NgModule to fix it. Cannot determine the module for class ClickBlock in F:/D/IONIC/quicktask/quicktask-web-froala/node_modules/ionic-angular/umd/components/app/click-block.d.ts! Add ClickBlock to the NgModule to fix it. Cannot determine the module for class Slides in F:/D/IONIC/quicktask/quicktask-web-froala/node_modules/ionic-angular/umd/components/slides/slides.d.ts! Add Slides to the NgModule to fix it.

Now if I try to include it in app.module.ts using below code:

import { OverlayPortal } from '../../node_modules/ionic-angular/umd/components/app/overlay-portal.d';

@NgModule({
  declarations: [
    OverlayPortal, //for aot compilation

on doing ionic serve the error I get after is -

Module build failed: Error: ENOENT: no such file or directory, open 'F:\D\IONIC\quicktask\quicktask-web-froala\node_modules\ionic-angular\umd\components\app\overlay-portal.d.js' at Error (native)

What do I do to build using --prod and run using ionic-serve without any bug.

Edit

app.module.ts

import { BrowserModule } from '@angular/platform-browser';
import { ErrorHandler, NgModule } from '@angular/core';
import { App, NavController,  IonicErrorHandler, IonicModule,IonicApp } from 'ionic-angular'; // removed IonicApp from here

import { MyApp } from './app.component';
import { HomePage } from '../pages/home/home';
import { ListPage } from '../pages/list/list';
import { LoginPage } from '../pages/login/login';
import { NewtaskPage } from '../pages/newtask/newtask';
//import { DashboardPage } from '../pages/dashboard/dashboard';
import { TaskgivenPage } from '../pages/taskgiven/taskgiven';
import { MytaskPage } from '../pages/mytask/mytask';

import { CommunicationPage } from '../pages/communication/communication';


import { CommunicationgivenPage } from '../pages/communicationgiven/communicationgiven';
import { CommunicationreportPage } from '../pages/communicationreport/communicationreport';
import { GivencommunicationclosedPage } from '../pages/givencommunicationclosed/givencommunicationclosed';

import { TestPage } from '../pages/test/test';
import { LogoutPage } from '../pages/logout/logout';
import { MyclosedtaskPage } from '../pages/myclosedtask/myclosedtask';
import { GivenclosedtaskPage } from '../pages/givenclosedtask/givenclosedtask';
import { ReporttoPage } from '../pages/reportto/reportto';
import { SlidePage } from '../pages/slide/slide';


import { StatusBar } from '@ionic-native/status-bar';
import { SplashScreen } from '@ionic-native/splash-screen';
//import { Firebase } from '@ionic-native/firebase';
import { SpeechRecognition } from '@ionic-native/speech-recognition';


import { Headers, Http, HttpModule ,Response } from '@angular/http';
import { IonicStorageModule } from '@ionic/storage';

import { TimeAgoPipe } from 'time-ago-pipe';

import {Commopen} from '../pages/givencommunicationclosed/commopen';
import { Userimage } from '../pages/dashboard2/userimage';

import { MycommclosedPage } from '../pages/mycommclosed/mycommclosed';
import { Dashboard2Page } from '../pages/dashboard2/dashboard2';
import { MytaskuserwisePage } from '../pages/mytaskuserwise/mytaskuserwise';
import  { ProfilePage } from '../pages/profile/profile';
import { PaymentPage } from '../pages/payment/payment';
import { InAppBrowser } from '@ionic-native/in-app-browser';
import { InfoPage } from '../pages/info/info';
import { PerformancePage } from '../pages/performance/performance';
import { PopoverPage } from '../pages/communicationgiven/popover';
import { Updatepopup} from '../pages/communicationgiven/updatepopup';
import { TimelinePage } from '../pages/timeline/timeline';
import { Commpopup } from '../pages/timeline/commpopup';
import {SearchPage} from '../pages/search/search';
import {SuggestionPage} from '../pages/suggestion/suggestion';
import {Mytaskpopup} from '../pages/mytask/mytaskpopup';
import {Userwisepopup} from '../pages/mytaskuserwise/userwisepopup';
import {Taskgivenpopup} from '../pages/taskgiven/taskgivenpopup';
import {Reportpopup} from '../pages/reportto/reportpopup';
import {FollowerPage} from '../pages/follower/follower';
import {CommfollowerPage} from '../pages/commfollower/commfollower';
import { CommPage } from '../pages/comm/comm';
import {ReportsPage} from '../pages/reports/reports';
import { DashmodalPage } from '../pages/dashmodal/dashmodal';
import { Dashmodal1Page } from '../pages/dashmodal1/dashmodal1';
import { LabelPage } from '../pages/label/label';
import { SortPage } from '../pages/sort/sort';
import { SortuserwisePage } from '../pages/sortuserwise/sortuserwise';
import { LastseenPage } from '../pages/lastseen/lastseen';
import { MemolistPage } from '../pages/memolist/memolist';
import { OfcmemoPage } from '../pages/ofcmemo/ofcmemo';
import { CommadminPage } from '../pages/commadmin/commadmin';
import { AdminpcPage } from '../pages/adminpc/adminpc';

import {AiPage} from '../pages/ai/ai';
import { Autosize } from '../directives/autosize/autosize';

// Import Froala Editor.
import "froala-editor/js/froala_editor.pkgd.min.js";
import { NoSanitizePipe } from '../pipes/no-sanitize/no-sanitize';

// Import Angular2 plugin.
import { FroalaEditorModule, FroalaViewModule } from 'angular-froala-wysiwyg';
import {Nl2BrPipeModule} from 'nl2br-pipe';
import {LinkyModule} from 'angular-linky';

//Search
import { SelectSearchableModule } from 'ionic-select-searchable';

// for ionic build --prod errors or aot compilation
// import { OverlayPortal } from '../../node_modules/ionic-angular/umd/components/app/overlay-portal.d';
//import { IonicApp } from '../../node_modules/ionic-angular/umd/components/app/app-root.d';
//import { ClickBlock } from '../../node_modules/ionic-angular/umd/components/app/click-block.d';
//import { Slides } from '../../node_modules/ionic-angular/umd/components/slides/slides.d';
import { FilterArrayPipe } from '../pages/dashboard2/filterpipe';
import {IonicPage, NavParams, Slides} from 'ionic-angular';

@NgModule({
  declarations: [
  //  OverlayPortal, //for aot compilation
 //   IonicApp , //for aot compilation for app-root.d
  //  ClickBlock, //for aot compilation
  //  Slides, //for aot compilation
  IonicApp,
    FilterArrayPipe, //for aot compilation
    TimeAgoPipe,
    MyApp,
    HomePage,
    ListPage,
    LoginPage,
    NewtaskPage,
   // DashboardPage,
    TaskgivenPage,
    MytaskPage,
    CommunicationPage,
    CommunicationgivenPage,
CommunicationreportPage,
GivencommunicationclosedPage,    
    TestPage,
    LogoutPage,
    MyclosedtaskPage,
    GivenclosedtaskPage,
    ReporttoPage,
    Dashboard2Page,
    MytaskuserwisePage,
    MycommclosedPage,
    ProfilePage,
    PaymentPage,
    InfoPage,
    SlidePage,
    PerformancePage ,
    PopoverPage,
    Updatepopup,
    SearchPage,
    TimelinePage,
    Commpopup,
    SuggestionPage,
    Mytaskpopup,
    Userwisepopup,
    Taskgivenpopup,
    Reportpopup,
    AiPage,
    Autosize,
    NoSanitizePipe,
    FollowerPage,
    CommfollowerPage,
    CommPage,
    ReportsPage,
    DashmodalPage,
    Dashmodal1Page,
    LabelPage,
    SortPage,
    SortuserwisePage,
    LastseenPage,
    MemolistPage,
    OfcmemoPage,
    CommadminPage,
    AdminpcPage,
    //OverlayPortal
  ],
  imports: [
    BrowserModule,
    HttpModule,
    Nl2BrPipeModule,
    LinkyModule,
    SelectSearchableModule,
    IonicModule.forRoot(MyApp),
    FroalaEditorModule.forRoot(),
    FroalaViewModule.forRoot(),
    IonicStorageModule.forRoot()
  ],
  bootstrap: [IonicApp],
  entryComponents: [
    MyApp,
    HomePage,
    ListPage,
    LoginPage,
    NewtaskPage,
   // DashboardPage,
    TaskgivenPage,
    MytaskPage,
    CommunicationPage,
    CommunicationgivenPage,
    CommunicationreportPage, 
    GivencommunicationclosedPage,
    TestPage,
    LogoutPage,
    MyclosedtaskPage,
    GivenclosedtaskPage,
    ReporttoPage,
    Dashboard2Page,
    MytaskuserwisePage,
    MycommclosedPage,
    ProfilePage,
    PaymentPage,
    InfoPage,
    SlidePage,
    PerformancePage,
    PopoverPage,
    Updatepopup,
    SearchPage,
    TimelinePage,
    Commpopup,
    SuggestionPage,
    Mytaskpopup,
    Userwisepopup,
    Taskgivenpopup,
    Reportpopup,
    AiPage,
    FollowerPage,
    CommfollowerPage,
    CommPage,
    ReportsPage,
    DashmodalPage,
    Dashmodal1Page,
    LabelPage,
    SortPage,
    SortuserwisePage,
    LastseenPage,
    MemolistPage,
    OfcmemoPage,
    CommadminPage,
    AdminpcPage
  ],
  providers: [
    StatusBar,
    SplashScreen,
    //Firebase,
    Commopen,
    GivenclosedtaskPage,
    Userimage,
    InAppBrowser,
    SpeechRecognition,
    {provide: ErrorHandler, useClass: IonicErrorHandler}
  ]
})
export class AppModule {}

Answer 1

The file you are using to import is the type definitions file with the extension .d.js.

You should import from the .ts file instead. Check the folder and you should get it