My experience with auth solutions/libraries is you invariably want to customize some flow/data/functions, but it's impossible because the library isn't flexible

My experience with auth solutions/libraries is you invariably want to customize some flow/data/functions, but it's impossible because the library isn't flexible enough. A better solution might be premade auth primitives (oauth providers, db adapters) that you copy paste into your codebase shadcn-style, and modify when necessary. I feel like "don't roll your own auth" is less true than it was 5-10 years ago as now there is an abundance of good references and core libraries.