gserde

-module(evil).
-compile([no_auto_import, nowarn_unused_vars, nowarn_unused_function, nowarn_nomatch]).

-export([expect/2]).

-spec expect({ok, JLG} | {error, any()}, binary()) -> JLG.
expect(X, Msg) ->
    case X of
        {ok, V} ->
            V;

        {error, _} ->
            gleam@io:print_error(Msg),
            erlang:error(#{gleam_error => panic,
                    message => <<"panic expression evaluated"/utf8>>,
                    module => <<"evil"/utf8>>,
                    function => <<"expect"/utf8>>,
                    line => 8})
    end.