Firebase Check Exhist and Then

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Firebase nodejs operations are async and the request like check the exhistance and then proceed with reminder need to be done is sync way using promises .


This requires to done using firebase admin client if you are developing rest api and  follwing function is a example for it.


usersRef.orderByChild('email').equalTo(result.email).once('value').then(function(snapshot) {
                    isExhist= snapshot.exists();
                      if (isExhist) {

                       }
                  else {

                   }

});

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