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npm · #4157 most downloaded on npm
Firebase JavaScript library for web and Node.js
Last release today
06 Oct 2026
Ships on a steady schedule
a new release about every 3 weeks
Nearly every release is documented
notes for 60 of the last 60 stable releases
2 versions withdrawn
withdrawn after publishing
15 years old
4222 releases · first in 2012
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One column per quarter.
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Improved how Firestore handles idle queries to reduce the cost of re-listening within 30 minutes.
Improved how Firestore handles idle queries to reduce the cost of re-listening within 30 minutes.
Improved offline performance with many outstanding writes.
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Fixed an issue where redirect results were being handled incorrectly for deleted Auth instances.
Fixed an issue where queries returned fewer results than they should, caused by documents that were cached as deleted when they should not have been (firebase/firebase-ios-sdk#1548). Because some cache data is cleared, clients might use extra bandwidth the first time they launch with this version of the SDK.
Added firebase.firestore.FieldValue.arrayUnion() and firebase.firestore.FieldValue.arrayRemove() to atomically add and remove elements from an array field in a document.
Added 'array-contains' query operator for use with .where() to find documents where an array field contains a specific element.
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