deep-object-diff Reference

Overview

deep-object-diff is a lightweight library for computing the difference between two JavaScript objects. A3 uses it in 6 Firestore onUpdate Cloud Function triggers to detect exactly which fields changed on a document, enabling conditional side effects that only run when specific fields are modified.

Version: 1.x Import: import { diff, addedDiff, deletedDiff, updatedDiff, detailedDiff } from 'deep-object-diff';

Core Functions

diff()

Returns an object representing all differences between two objects. The result contains only the paths that changed, with the new values.

import { diff } from 'deep-object-diff';