angular-firebase

angular-firebase-example.ts

import { FirebaseDatabase } from '@blaugold/angular-firebase'
import 'rxjs/add/operator/map'

/**
 * This example demonstrates the type checking ability when the database is used with a schema.
 * Open this file with an ide like VS Code or WebStorm and you should see error highlighting.
 */

interface DBSchema {
  todoLists: {
    [listId: string]: {
      name: string
      todoItems: {
        [itemId: string]: {
          title: string
          checked: boolean
        }
      }
    }
  }
}

let db: FirebaseDatabase<DBSchema>

// Should compile.
db.ref().child('todoLists').child('1').child('todoItems')

db.ref().child('todoLists').child('1').child('name').onValue().val()
  .map((name: string /* Compiles since `name`has type string. */) => {})
  

// Should not compile.
db.ref().child('todoLists').child('1').child('todoItemz') // todoItemz should be todoItems.
  
db.ref().child('todoLists').child('1').child('name').onValue().val()
  .map((name: number /* Fails since `name` has type string. */) => {})