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July 24, 2017 10:33
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| firebase.auth().onAuthStateChanged( user => { | |
| if (user) { | |
| // If user state changes and 'user' exists, check Firebase Database for user | |
| const userReference = db.ref(`users/${user.uid}`); | |
| userReference.once('value', snapshot => { | |
| if (!snapshot.val()) { | |
| // User does not exist, create user entry | |
| userReference.set({ | |
| email: user.email, | |
| displayName: user.displayName | |
| }); | |
| } | |
| }); | |
| } | |
| }); |
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