Just that there are several generations of API. This makes TypeScript pretty much useless / impossible.

Working with Prisma: if it compiles (and you don't have a business logic error), then you usually won't get any runtime sql errors.

You don't have type safety with sequelize.

Ah yes, that's definitely true, automatically generated getters and setters are a pain with sequelize. It's not impassive to have type safety though, it's just complicated.

I had to write my own types around the existing ones to get getters and setters to work.