Firestore-check-if-field-exists

May 11, 2021 — You can always explicitly check for a document's existence by calling exists() . ... Returns whether or not the field exists in the document.

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firestore-check-if-field-exists

// Get the `FieldValue` object let FieldValue = require('firebase-admin').firestore.​FieldValue; // Create a document reference let cityRef = db.collection('cities').doc('​ ... 939c2ea5af

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