need verify if query result exist

[macpatoOrigin]

snippets-node/firestore/main/index.js

Lines 526 to 535 in a2a7b67

	var citiesRef = db.collection('cities');
	var query = citiesRef.where('capital', '==', true).get()
	.then(snapshot => {
	snapshot.forEach(doc => {
	console.log(doc.id, '=>', doc.data());
	});
	})
	.catch(err => {
	console.log('Error getting documents', err);
	});

var citiesRef = db.collection('cities');
var query = citiesRef.where('capital', '==', true).get()
    .then(snapshot => {
        if(snapshot.size>0)
                  snapshot.forEach(doc => {
                          console.log(doc.id, '=>', doc.data());
                  });
       else
                  console.log("no documents");
    })
    .catch(err => {
      console.log('Error getting documents', err);
    });

[macpatoOrigin]

if(snapshot.size>0)