Where is the index stored

Hey everyone. Does anyone know where the index is stored. The one that is built up on the first load of a vault?

I have my vault stored on a OneDrive share, and I opened it up on another machine and I was surprised that I had to re-index everything. I assumed that all of these meta files would have been stored with the vault.

Since it is not, do we know where they are stored? I was thinking about making a feature request to have them moved into the .obsidian folder.

Either way, thank you for your assistance.