I just don't understand async/await 😢!

Joachim Waldmann — Sat, 02 Nov 2019 20:01:19 +0000

Hi,

I'm pretty new to coding and having a hard time understanding async/await.

My question: why is createUserInFirestore executing before userExists?

async googleLogin () {
      var provider = new firebase.auth.GoogleAuthProvider()
      try {
        const result = await firebase.auth().signInWithPopup(provider)
        const uid = result.user.uid
        const userExists = await this.userExists(uid)
        if (!userExists) {
          this.createUserInFirestore(uid)
        }
      } catch (error) {...}

async userExists (uid) {
      const usersRef = db.collection('users').doc(uid)

      usersRef.get()
        .then(async (docSnapshot) => {
          if (docSnapshot.exists) {
            console.log('user already exists in firestore')
            return true
          } else {
            console.log('no user in firestore')
            return false
          }
        })
    }

Thanks

DEV Community: Joachim Waldmann

I just don't understand async/await 😢!