Firebase functions.httpsCallable(...).then 不是函數

Question

我正在嘗試使用我制作的功能。 所以在我的客戶中，我這樣做：

const functions = firebase.app().functions("europe-west1");

        functions.httpsCallable('getSelf').then(res => {
            console.log(res);
            //stuff
        }).catch(e => {
            console.log(e);
            switch (e.code) {
                //stuff
            }
        })

基本上我得到的錯誤是functions.httpsCallable(...).then is not a function 。 我真的不明白，我沒有找到任何文檔如何在不同版本的客戶端上進行函數調用。

這是我的服務器端

// Gets things like adminlevel, profilepic etc
exports.getSelf = functions.region("europe-west1").https.onCall((data, context) => {
  // Checking that the user is authenticated.
  if (!context.auth) 
    // Throwing an HttpsError so that the client gets the error details.
    throw new functions.https.HttpsError('unauthorized', 'The function must be called ' +
        'while authenticated.');

  return db.collection("userInformation").doc(context.auth.uid).then(user => {
    if(!user)
      new functions.https.HttpsError('not-found', 'The user was not found');
    //returns needing values
    return {
      profilePicture: user.profilePicture,
      adminLevel: user.adminLevel,
      stripeAccountId: user.stripeAccountId,
      stripeCustomerId: user.stripeCustomerId,
      type: user.type
    }
  })
});

Answer 1

HttpsCallable 本身就是一個可以帶參數調用的函數，需要在里面添加另一個() ：

const getSelf = functions.httpsCallable('getSelf');
getSelf({}).then(...);