How to keep the order of elements in an array in a snapshot?

Question

JavaScript

The task is to fix the files on the ftp server and, accordingly. changes, emit the corresponding event (change/delete/rename, etc.).
Every few seconds I take a snapshot of the file structure on the ftp server. And then I compare the changes using this deep-diff lib . The problem is to keep the order of the original elements in the array. Otherwise, for example, when adding a new file, the order will change and the comparison of the two objects will be incorrect. So far, I see two possible solutions:
1# Store indexes and names somewhere and manually set files by indexes.
2# Take an object from the state, find the same name in the snapshot and compare each object like this.
Is there any better option?

Answer 1

can be sorted before reconciliation