-record(builder, {
    dirs :: list(binary()),
    handler :: gleam@option:option(fun((any(), filespy:change(any())) -> gleam@otp@actor:next(any(), filespy:change(any())))),
    initializer :: gleam@option:option(fun((gleam@erlang@process:subject(filespy:change(any()))) -> {ok,
            gleam@otp@actor:initialised(any(), filespy:change(any()), gleam@erlang@process:subject(filespy:change(any())))} |
        {error, binary()}))
}).