There is currently no way to prevent more than one user from writing to a file that is currently being worked on with the Native File System API. This causes a problem when multiple users are editing the same file on a shared network drive. If User B opens a file after user A, user B can save changes whilst user A is still working on the same document. Once user A saves the file, changes made by user B are overwritten, causing data loss.

This is not possible in Excel, for example, where changes to a file are prevented whilst open by another process.

Is there a way to work around this issue?