Question

我正在尝试在我的scala-js代码中编写一个javascriptfaçade，以利用Google的Firebase身份验证JavaScript框架。在对Firebase进行身份验证时（初始化之后），将获得Firebase用户或带有描述问题的字符串错误代码的异常。具体来说，我正在尝试使用https://firebase.google.com/docs/reference/js/firebase.auth.Auth#signInWithEmailAndPassword中所述的电子邮件和密码登录。提供正确的电子邮件和密码会向我返回一个有效的Firebase用户，我会像这样“使用façade”：

  @JSName("firebase.User")
  @js.native
  trait FirebaseUser extends FirebaseUserInfo {
    var emailVerified : Boolean = js.native
    var isAnonynous: Boolean = js.native
    var providerData: js.Object = js.native
    var refreshToken: String = js.native
  }

  object FirebaseUser {
    def apply(emailVerified : Boolean, isAnonynous: Boolean, providerData: js.Object, refreshToken: String): FirebaseUser = {
      js.Dynamic.literal(emailVerified = emailVerified, isAnonynous = isAnonynous, providerData = providerData, refreshToken = refreshToken).asInstanceOf[FirebaseUser]
    }
  }

包含'signInWithEmailAndPassword'方法的Authfaçade如下：

@JSName("firebase.auth.Auth")
@js.native
trait FirebaseAuth extends js.Object {
  var app: FirebaseApp = js.native
  var currentUser: FirebaseUser = js.native
  def signInWithEmailAndPassword(email: String, password: String): Promise[FirebaseUser] = js.native
  def signOut: Promise[Void] = js.native
  def onAuthStateChanged(nextOrObserver: FirebaseUser => Unit, opt_error: FirebaseAuthError => Unit = null, opt_completed: Unit => Unit = null)
    }

object FirebaseAuth {
    def apply(app: FirebaseApp, currentUser: FirebaseUser): FirebaseAuth = {
        js.Dynamic.literal(app = app, currentUser = currentUser).asInstanceOf[FirebaseAuth]
    }
}

我调用它的代码如下所示：

// since 'signInWithEmailAndPassword()' returns promise, convert to future
val f1 = firebase.auth().signInWithEmailAndPassword(S.user.email, S.user.password).toFuture

f1 onComplete {
  case Success(fbu) => {
    fbuser = fbu
    scope.modState(_.copy(loginState = isLoggedIn)).runNow()
  }
  case Failure(ex) => println("Error signing-in to firebase, error="+ex.getMessage)
  case _ => println("Something else happened when signing-in...")
}

成功案例工作正常，但如果预期null包含错误原因，则失败案例会返回String。我究竟做错了什么？我怀疑它与Firebase有自己的Firebase.promise类型和使用内置的scalajs scala.scalajs.js.Promise类型这一事实有关 - 我不得不为Firebase创建一个外观。承诺类型。

我正在使用sbt版本0.13.8和scala-js插件版本0.6.7

如何在验证时捕获firebase 3.0.2的javascriptfaçade中的错误

0 个答案: