Author here. In my experience, AI coding tools like Claude Code can write code in the Effect system style, and that could be a great starting point for getting developers not familiar with this approach on board.
I considered adding JSDoc type annotations, but that would make the code a bit verbose.
I think this page explains it well: https://en.wikipedia.org/wiki/Object%E2%80%93relational_impedance_mismatch
Perhaps I was unclear. What I meant to say is that, whenever possible, we shouldn't have multiple versions of a field, especially when there is no corresponding plaintext password field in the database, as is the case here.
Thanks for the tip. password.trim() can indeed be problematic. I just removed that line.
I've added JSDoc type annotations to the library.