我在离子项目中更新了angularfire2和firebase。在此之前,一切都正常,但现在,当我运行离子服务时,我得到了这个错误。
打字稿错误:文件'/node_modules/firebase/app.d.ts'不是模块。 我打开文件,发现它是空的。
这是我的package.json文件
"dependencies": {
"@angular/common": "4.1.3",
"@angular/compiler": "4.1.3",
"@angular/compiler-cli": "4.1.3",
"@angular/core": "4.1.3",
"@angular/forms": "4.1.3",
"@angular/http": "4.1.3",
"@angular/platform-browser": "4.1.3",
"@angular/platform-browser-dynamic": "4.1.3",
"@ionic-native/camera": "^3.13.1",
"@ionic-native/core": "3.10.2",
"@ionic-native/image-resizer": "^4.3.0",
"@ionic-native/network": "^4.2.1",
"@ionic-native/splash-screen": "3.10.2",
"@ionic-native/status-bar": "3.10.2",
"@ionic/storage": "2.0.1",
"angularfire2": "^4.0.0-rc0",
"firebase": "^4.6.2",
"ionic-angular": "3.4.2",
"ionicons": "3.0.0",
"rxjs": "5.4.0",
"sw-toolbox": "3.6.0",
"typings": "^2.1.1",
"zone.js": "0.8.12"
},
"devDependencies": {
"@ionic/app-scripts": "1.3.7",
"typescript": "2.3.3"
},
"cordovaPlugins": [
"cordova-plugin-whitelist",
"cordova-plugin-console",
"cordova-plugin-statusbar",
"cordova-plugin-device",
"cordova-plugin-splashscreen",
"ionic-plugin-keyboard"
],
"cordovaPlatforms": [],
"description": "loginApp: An Ionic project"
}
那么这个错误可能是什么原因?
答案 0 :(得分:1)
在项目目录中安装所需的包:
$ npm install angularfire2 firebase promise-polyfill --save
这应该在项目的package.json文件中添加angularfire2,promise-polyfill和firebase条目作为依赖项。类似于:
"angularfire2": "^4.0.0-rc.1",
"firebase": "^4.1.3",
"promise-polyfill": "^6.0.2",
在您喜欢的编辑器中打开您的项目,然后在app.module.ts
下打开src/app
文件
并添加以下三个条目。
1)在顶部导入AngularFireModule和AngularFireDatabaseModule。
2)定义你的firebaseConfig常量。
3)通过在" imports"中添加AngularFireModule和AngularFireAuthModule来初始化您的应用。 @NgModule中的数组
4)另外,在" provider"中添加AngularFireDatabase。 @NgModule中的数组
您的app.module.ts
文件看起来应该是这样的。
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 {}
```
现在在组件中注入AngularFireDatabase。进入home.ts
打开src/pages/home/home.ts
即可
以下更改:
1)导入&#34; AngularFireDatabase&#34;在组件的顶部。
2)在构造函数中注入AngularFireDatabase依赖项。
3)调用AngularFireDatabase对象上的list方法。
您的home.ts
文件应如下所示:
import { Component } from '@angular/core';
import { NavController } from 'ionic-angular';
import { AngularFireDatabase } from 'angularfire2/database';
import { Observable } from 'rxjs/Observable';
@Component({
selector: 'page-home',
templateUrl: 'home.html'
})
export class HomePage {
items: Observable<any[]>;
constructor(public navCtrl: NavController, afDB: AngularFireDatabase) {
this.items = afDB.list('cuisines').valueChanges();
}
}
* 确保数据库中的cuisines
节点包含一些原始数据。
更新 home.html
src/pages/home/home.html
,条目如下
<ion-header>
<ion-navbar>
<ion-title>
Ionic Blank
</ion-title>
</ion-navbar>
</ion-header>
<ion-content padding>
<ion-list>
<ion-item class="text" *ngFor="let item of items | async">
{{item | json}}
</ion-item>
</ion-list>
</ion-content>
执行以下命令
运行您的应用C:\projects\auth-ng4-ionic3-af2> ionic serve
这应该从firebase获取数据。
来源:https://github.com/angular/angularfire2/blob/master/docs/ionic/v3.md
编辑:如果这不起作用,您可能需要降级firebase。在这种情况下,请运行以下命令:
npm install --save firebase@3.9.*