When a query is invalid, ts-make-query raises an error like this:

(rust-panic "called `Result::unwrap()` on an `Err` value: Syntax(1, \"[(call_expression function: (identifier) @function)]\\n^\")")

This is because _make_query uses unwrap.

It should instead define a new error class, e.g.

It's mostly about generating a useful type name, for error reporting. Using typename crate is one option.