-record(register_middleware, {
    middleware :: fun((fun((gleam@http@request:request(bitstring())) -> gleam@http@response:response(gleam@bit_builder:bit_builder()))) -> fun((gleam@http@request:request(bitstring())) -> gleam@http@response:response(gleam@bit_builder:bit_builder()))),
    reply_channel :: gleam@otp@process:sender(boolean())
}).