Let me see how I can help.

I tried running the above schema with quick type. On my machine it gives a helpful message. To be exact it outputs :

$ quicktype test.json
Error: Syntax error in input JSON test: Parser cannot parse input: unexpected token '}'.

I think that is pretty valid output. Though providing the line number and column will be pretty good

Well, this just cost me an entire day of debugging. 🤦‍♂️

For me, the problem was simply malformed CLI arguments combined with missing validation and poor error-reporting.

Might I propose, as an interim fix, we simply make the CLI print out it's configuration options before starting?

That way, we can at least tell if it's trying to do what we're trying to ask for.

My head hurts.