-record(server_app, {
    view :: fun((list(binary()), any()) -> lustre@internals@vdom:element(illustrious@state:illustrious_action(any()))),
    html_headers :: fun((list(binary()), any()) -> lustre@internals@vdom:element(illustrious@state:illustrious_action(any()))),
    default_model :: any(),
    updater :: fun((illustrious@state:illustrious_model(any()), illustrious@state:illustrious_action(any())) -> {illustrious@state:illustrious_model(any()),
        lustre@effect:effect(illustrious@state:illustrious_action(any()))}),
    decoder :: fun((gleam@dynamic:dynamic_()) -> {ok,
            illustrious@state:illustrious_action(any())} |
        {error, list(gleam@dynamic:decode_error())}),
    initializer :: fun((list(binary()), any()) -> {ok, gleam@json:json()} |
        {error, any()}),
    loader :: fun((list(binary()), any()) -> {ok, gleam@json:json()} |
        {error, any()}),
    error_serializer :: fun((any()) -> binary())
}).