deep-object-diff

To compute a deep diff between nested JavaScript objects, you need a recursive comparison function that detects additions, modifications, and deletions while returning only the changed paths and their new values.

Tracking data changes for a Firestore-like audit trail requires comparing old and new document states to output a structured changes object, which identifies specific modified fields to drive conditional logic and logging.

The best way to detect deleted fields when diffing objects is to use a deep-diff implementation that explicitly preserves undefined values for removals, ensuring your downstream synchronization logic accurately processes deletions.

Yes, you can use a structured changes object to trigger conditional onUpdate logic by evaluating the specific changed paths and new values, allowing your application to fire targeted actions only when relevant nested fields are modified.

A recursive object diff handles nested data change detection by traversing deeply into sub-objects, but it requires predictable data structures to accurately map modifications and deletions without ignoring undefined values.