A named function declaration can be prepended with `export` to
automatically export the function.

-- File test-func-decl.uc --
export function func() {
	print("Hello, world!\n");
};
-- End --

-- Testcase --
import { func } from "./files/test-func-decl.uc";

func();
-- End --

-- Args --
-R
-- End --

-- Expect stdout --
Hello, world!
-- End --