ionic-framework/angular/src/ionic-module.ts

import { CommonModule, DOCUMENT } from '@angular/common';
import { ModuleWithProviders, APP_INITIALIZER, NgModule, NgZone } from '@angular/core';
import { IonicConfig } from '@ionic/core';

import { appInitialize } from './app-initialize';
import { BooleanValueAccessorDirective } from './directives/control-value-accessors/boolean-value-accessor';
import { NumericValueAccessorDirective } from './directives/control-value-accessors/numeric-value-accesssor';
import { RadioValueAccessorDirective } from './directives/control-value-accessors/radio-value-accessor';
import { SelectValueAccessorDirective } from './directives/control-value-accessors/select-value-accessor';
import { TextValueAccessorDirective } from './directives/control-value-accessors/text-value-accessor';
import { IonBackButtonDelegateDirective } from './directives/navigation/ion-back-button';
import { IonRouterOutlet } from './directives/navigation/ion-router-outlet';
import { IonTabs } from './directives/navigation/ion-tabs';
import { NavDelegate } from './directives/navigation/nav-delegate';
import {
  RouterLinkDelegateDirective,
  RouterLinkWithHrefDelegateDirective,
} from './directives/navigation/router-link-delegate';
import { IonModal } from './directives/overlays/modal';
import { IonPopover } from './directives/overlays/popover';
import {
  IonAccordion,
  IonAccordionGroup,
  IonApp,
  IonAvatar,
  IonBackButton,
  IonBackdrop,
  IonBadge,
  IonBreadcrumb,
  IonBreadcrumbs,
  IonButton,
  IonButtons,
  IonCard,
  IonCardContent,
  IonCardHeader,
  IonCardSubtitle,
  IonCardTitle,
  IonCheckbox,
  IonChip,
  IonCol,
  IonContent,
  IonDatetime,
  IonFab,
  IonFabButton,
  IonFabList,
  IonFooter,
  IonGrid,
  IonHeader,
  IonIcon,
  IonImg,
  IonInfiniteScroll,
  IonInfiniteScrollContent,
  IonInput,
  IonItem,
  IonItemDivider,
  IonItemGroup,
  IonItemOption,
  IonItemOptions,
  IonItemSliding,
  IonLabel,
  IonList,
  IonListHeader,
  IonMenu,
  IonMenuButton,
  IonMenuToggle,
  IonNav,
  IonNavLink,
  IonNote,
  IonProgressBar,
  IonRadio,
  IonRadioGroup,
  IonRange,
  IonRefresher,
  IonRefresherContent,
  IonReorder,
  IonReorderGroup,
  IonRippleEffect,
  IonRow,
  IonSearchbar,
  IonSegment,
  IonSegmentButton,
  IonSelect,
  IonSelectOption,
  IonSkeletonText,
  IonSlide,
  IonSlides,
  IonSpinner,
  IonSplitPane,
  IonTabBar,
  IonTabButton,
  IonText,
  IonTextarea,
  IonThumbnail,
  IonTitle,
  IonToggle,
  IonToolbar,
} from './directives/proxies';
import { VirtualFooter } from './directives/virtual-scroll/virtual-footer';
import { VirtualHeader } from './directives/virtual-scroll/virtual-header';
import { VirtualItem } from './directives/virtual-scroll/virtual-item';
import { IonVirtualScroll } from './directives/virtual-scroll/virtual-scroll';
import { AngularDelegate } from './providers/angular-delegate';
import { ConfigToken } from './providers/config';
import { ModalController } from './providers/modal-controller';
import { PopoverController } from './providers/popover-controller';

const DECLARATIONS = [
  // proxies
  IonAccordion,
  IonAccordionGroup,
  IonApp,
  IonAvatar,
  IonBackButton,
  IonBackdrop,
  IonBadge,
  IonBreadcrumb,
  IonBreadcrumbs,
  IonButton,
  IonButtons,
  IonCard,
  IonCardContent,
  IonCardHeader,
  IonCardSubtitle,
  IonCardTitle,
  IonCheckbox,
  IonChip,
  IonCol,
  IonContent,
  IonDatetime,
  IonFab,
  IonFabButton,
  IonFabList,
  IonFooter,
  IonGrid,
  IonHeader,
  IonIcon,
  IonImg,
  IonInfiniteScroll,
  IonInfiniteScrollContent,
  IonInput,
  IonItem,
  IonItemDivider,
  IonItemGroup,
  IonItemOption,
  IonItemOptions,
  IonItemSliding,
  IonLabel,
  IonList,
  IonListHeader,
  IonMenu,
  IonMenuButton,
  IonMenuToggle,
  IonModal,
  IonNav,
  IonNavLink,
  IonNote,
  IonPopover,
  IonProgressBar,
  IonRadio,
  IonRadioGroup,
  IonRange,
  IonRefresher,
  IonRefresherContent,
  IonReorder,
  IonReorderGroup,
  IonRippleEffect,
  IonRow,
  IonSearchbar,
  IonSegment,
  IonSegmentButton,
  IonSelect,
  IonSelectOption,
  IonSkeletonText,
  IonSlide,
  IonSlides,
  IonSpinner,
  IonSplitPane,
  IonTabBar,
  IonTabButton,
  IonText,
  IonTextarea,
  IonThumbnail,
  IonToggle,
  IonToolbar,
  IonTitle,

  IonTabs,

  // ngModel accessors
  BooleanValueAccessorDirective,
  NumericValueAccessorDirective,
  RadioValueAccessorDirective,
  SelectValueAccessorDirective,
  TextValueAccessorDirective,

  // navigation
  IonRouterOutlet,
  IonBackButtonDelegateDirective,
  NavDelegate,
  RouterLinkDelegateDirective,
  RouterLinkWithHrefDelegateDirective,

  // virtual scroll
  VirtualFooter,
  VirtualHeader,
  VirtualItem,
  IonVirtualScroll,
];

@NgModule({
  declarations: DECLARATIONS,
  exports: DECLARATIONS,
  providers: [AngularDelegate, ModalController, PopoverController],
  imports: [CommonModule],
})
export class IonicModule {
  static forRoot(config?: IonicConfig): ModuleWithProviders<IonicModule> {
    return {
      ngModule: IonicModule,
      providers: [
        {
          provide: ConfigToken,
          useValue: config,
        },
        {
          provide: APP_INITIALIZER,
          useFactory: appInitialize,
          multi: true,
          deps: [ConfigToken, DOCUMENT, NgZone],
        },
      ],
    };
  }
}