Periodically I keep trying these coding models in Copilot and I have yet to have an experience where it produced working code with a pretty straightforward TypeScript codebase. Specifically, it cannot for the life of it produce working Drizzle code. It will hallucinate methods that don't exist despite throwing bright red type errors. Does it even check for TS errors?

Not sure about Copilot, but the Cursor agent runs both eslint and tsc by default and fixes the errors automatically. You can tell it to run tests too, and whatever other tools. I've had a good experience writing drizzle schemas with it.