我正在将 Ionic 6 (Angular) 项目更新到 Ionic 8 (Angular 17),并且在构建项目时遇到此错误:
main.js:23 ERROR NullInjectorError: R3InjectorError(Pt)[Ze -> de -> de]:
NullInjectorError: No provider for de!
at Is.get (main.js:23:75445)
at ho.get (main.js:23:84703)
at ho.get (main.js:23:84703)
at ot (main.js:23:73943)
at Object.lt (main.js:23:74022)
at ye.#e.ɵfac [as factory] (main.js:1:27503)
at ho.hydrate (main.js:23:86100)
at ho.get (main.js:23:84655)
at Df.get (main.js:23:128437)
at Yo (main.js:23:94874)
handleError @ main.js:23
main.js:1 NullInjectorError: R3InjectorError(Pt)[Ze -> de -> de]:
NullInjectorError: No provider for de!
at Is.get (main.js:23:75445)
at ho.get (main.js:23:84703)
at ho.get (main.js:23:84703)
at ot (main.js:23:73943)
at Object.lt (main.js:23:74022)
at ye.#e.ɵfac [as factory] (main.js:1:27503)
at ho.hydrate (main.js:23:86100)
at ho.get (main.js:23:84655)
at Df.get (main.js:23:128437)
at Yo (main.js:23:94874)
除了缺少提供商之外,该错误并不能说明太多问题。
这就是我的
app.module.ts
的样子:
import { NgModule } from '@angular/core';
import { browserLocalPersistence, provideAuth, getAuth } from '@angular/fire/auth';
import { provideFirebaseApp, initializeApp } from '@angular/fire/app';
import { HttpClient, HttpClientModule } from '@angular/common/http';
import { BrowserModule } from '@angular/platform-browser';
import { IonicModule, IonicRouteStrategy } from '@ionic/angular';
import { RouteReuseStrategy } from '@angular/router';
import { IonicStorageModule } from '@ionic/storage-angular';
import { Storage } from '@ionic/storage-angular';
import { MusicControls } from '@awesome-cordova-plugins/music-controls/ngx';
import { TranslateModule, TranslateLoader } from '@ngx-translate/core';
import { TranslateHttpLoader } from '@ngx-translate/http-loader';
import { AppRoutingModule } from './app-routing.module';
import { AppComponent } from './app.component';
import { ServiceWorkerModule } from '@angular/service-worker';
import { FormsModule, ReactiveFormsModule } from '@angular/forms';
import { GooglePlus } from '@awesome-cordova-plugins/google-plus/ngx';
import { ModalAbout } from './modals/modal-about/modal-about';
import { ModalChangePassword } from './modals/modal-change-password/modal-change-password';
import { ModalDiscovery } from './modals/modal-discovery/modal-discovery';
import { ModalFilter } from './modals/modal-filter/modal-filter';
import { ModalHistory } from './modals/modal-history/modal-history';
import { ModalLegal } from './modals/modal-legal/modal-legal';
import { ModalStreamRatings } from './modals/modal-stream-ratings/modal-stream-ratings';
import { ModalReportIssue } from './modals/modal-report-issue/modal-report-issue';
import { ModalRequestStream } from './modals/modal-request-stream/modal-request-stream'
import { PopoverRate } from './popovers/popover-rate/popover-rate';
import { CanActivateGuard } from './providers/guards/can-activate.guard';
import { SigninSignupGuard } from './providers/guards/signin-signup.guard';
import { ScrollingModule } from '@angular/cdk/scrolling';
import { firebaseConfig } from './config/firebase.config';
export function translationLoader(http: HttpClient) {
return new TranslateHttpLoader(http, "./assets/i18n/", ".json");
}
@NgModule({
imports: [
provideFirebaseApp( () => initializeApp(firebaseConfig)),
provideAuth(() => {
const auth = getAuth();
auth.setPersistence(browserLocalPersistence);
return auth;
}),
AppRoutingModule,
BrowserModule,
HttpClientModule,
FormsModule,
ReactiveFormsModule,
ScrollingModule,
TranslateModule.forRoot({
loader: {
provide: TranslateLoader,
useFactory: (translationLoader),
deps: [HttpClient]
}
}),
IonicModule.forRoot(),
IonicStorageModule.forRoot(),
ServiceWorkerModule.register('ngsw-worker.js', {
enabled: true
})
],
declarations: [
AppComponent,
ModalAbout,
ModalChangePassword,
ModalDiscovery,
ModalFilter,
ModalHistory,
ModalLegal,
ModalReportIssue,
ModalRequestStream,
ModalStreamRatings,
PopoverRate
],
providers: [
{ provide: RouteReuseStrategy, useClass: IonicRouteStrategy },
GooglePlus,
HttpClient,
MusicControls,
Storage,
CanActivateGuard,
SigninSignupGuard,
Storage
],
bootstrap: [AppComponent]
})
export class AppModule {}
我已经多次检查了所有导入,但没有发现任何错误。也许我在这里忽略了一些东西?
尝试这个改变。这基本上将两个提供者从
imports
移动到 providers
数组。这可能会解决问题。
运行
ng serve -c development
将运行本地服务器,无需对源代码进行任何优化/缩小。这将有助于缩小错误范围。此外,您还可以修改 angular.json
以使用 development
配置作为 ng serve
的默认配置。您可以在这里阅读相关内容。
@NgModule({
imports: [
AppRoutingModule,
BrowserModule,
HttpClientModule,
FormsModule,
ReactiveFormsModule,
ScrollingModule,
TranslateModule.forRoot({
loader: {
provide: TranslateLoader,
useFactory: (translationLoader),
deps: [HttpClient]
}
}),
IonicModule.forRoot(),
IonicStorageModule.forRoot(),
ServiceWorkerModule.register('ngsw-worker.js', {
enabled: true
})
],
declarations: [
AppComponent,
ModalAbout,
ModalChangePassword,
ModalDiscovery,
ModalFilter,
ModalHistory,
ModalLegal,
ModalReportIssue,
ModalRequestStream,
ModalStreamRatings,
PopoverRate
],
providers: [
{ provide: RouteReuseStrategy, useClass: IonicRouteStrategy },
GooglePlus,
HttpClient,
MusicControls,
Storage,
CanActivateGuard,
SigninSignupGuard,
Storage,
provideFirebaseApp( () => initializeApp(firebaseConfig)),
provideAuth(() => {
const auth = getAuth();
auth.setPersistence(browserLocalPersistence);
return auth;
}),
],
bootstrap: [AppComponent]
})
export class AppModule {}