Firestore decrement field
const userRef = db.collection('documents').doc('document_id');
const decrement = firebase.firestore.FieldValue.increment(-1);
userRef.update({ fieldToDecrease: decrement });Firestore decrement field
const userRef = db.collection('documents').doc('document_id');
const decrement = firebase.firestore.FieldValue.increment(-1);
userRef.update({ fieldToDecrease: decrement });Copyright © 2021 Codeinu
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