-record(partial_converter, {
    encoder :: fun((any()) -> convert:glitr_value()),
    decoder :: fun((convert:glitr_value()) -> {ok, any()} |
        {error, list(gleam@dynamic:decode_error())}),
    fields_def :: list({binary(), convert:glitr_type()}),
    default_value :: {ok, any()} | {error, list(gleam@dynamic:decode_error())}
}).