我很抱歉，我尝试复制您的问题时没有成功。如果您仍然遇到这个问题，我建议您尝试以下操作：
- 检查我的配置与您的配置之间的差异
- 查看配置ionic3的注释在这里
- 重新安装npm（听起来很疯狂，但有时这样做可以让问题消失，而且我的版本比您的更新一些）
npm配置
$npm ls -g --depth=0
/Users/pbrack/.nvm/versions/node/v8.5.0/lib
├── cordova@7.1.0
├── cordova-check-plugins@3.0.1
├── ionic@3.13.2
├── ios-deploy@1.9.2
└── npm@5.4.2
配置步骤
$ ionic start angularfire2test blank
$ npm install angularfire2 firebase --save
package.json
{
"name": "angularfire-test",
"version": "0.0.1",
"author": "Ionic Framework",
"homepage": "http://ionicframework.com/",
"private": true,
"scripts": {
"clean": "ionic-app-scripts clean",
"build": "ionic-app-scripts build",
"lint": "ionic-app-scripts lint",
"ionic:build": "ionic-app-scripts build",
"ionic:serve": "ionic-app-scripts serve"
},
"dependencies": {
"@angular/common": "4.4.3",
"@angular/compiler": "4.4.3",
"@angular/compiler-cli": "4.4.3",
"@angular/core": "4.4.3",
"@angular/forms": "4.4.3",
"@angular/http": "4.4.3",
"@angular/platform-browser": "4.4.3",
"@angular/platform-browser-dynamic": "4.4.3",
"@ionic-native/core": "4.3.0",
"@ionic-native/splash-screen": "4.3.0",
"@ionic-native/status-bar": "4.3.0",
"@ionic/storage": "2.0.1",
"angularfire2": "^5.0.0-rc.3",
"firebase": "^4.6.0",
"ionic-angular": "3.7.1",
"ionicons": "3.0.0",
"rxjs": "5.4.3",
"sw-toolbox": "3.6.0",
"zone.js": "0.8.18"
},
"devDependencies": {
"@ionic/app-scripts": "3.0.0",
"typescript": "2.3.4"
},
"description": "An Ionic project"
}
app.module.ts
import {BrowserModule} from '@angular/platform-browser';
import {ErrorHandler, NgModule} from '@angular/core';
import {IonicApp, IonicErrorHandler, IonicModule} from 'ionic-angular';
import {SplashScreen} from '@ionic-native/splash-screen';
import {StatusBar} from '@ionic-native/status-bar';
import {MyApp} from './app.component';
import {HomePage} from '../pages/home/home';
import {AngularFireModule} from 'angularfire2';
import {AngularFireDatabaseModule, AngularFireDatabase} from 'angularfire2/database';
import {AngularFireAuthModule} from 'angularfire2/auth';
export const firebaseConfig = {
apiKey: "xxxxxxxxxx",
authDomain: "your-domain-name.firebaseapp.com",
databaseURL: "https://your-domain-name.firebaseio.com",
storageBucket: "your-domain-name.appspot.com",
messagingSenderId: '<your-messaging-sender-id>'
};
@NgModule({
declarations: [
MyApp,
HomePage
],
imports: [
BrowserModule,
IonicModule.forRoot(MyApp),
AngularFireModule.initializeApp(firebaseConfig),
AngularFireDatabaseModule,
AngularFireAuthModule
],
bootstrap: [IonicApp],
entryComponents: [
MyApp,
HomePage
],
providers: [
StatusBar,
SplashScreen,
AngularFireDatabase,
{provide: ErrorHandler, useClass: IonicErrorHandler}
]
})
export class AppModule {
}
home.ts
import {Component} from '@angular/core';
import {AngularFireDatabase} from 'angularfire2/database';
import {Observable} from 'rxjs/Observable';
@Component({
selector: 'page-home',
templateUrl: 'home.html'
})
export class HomePage {
items: Observable<any[]>;
constructor(afDB: AngularFireDatabase) {
this.items = afDB.list('cuisines').valueChanges();
}
}
