The Muscle-Memory Illusion
"An asynchronous network stream belongs at the perimeter of your architecture; once an AI agent's UI lands on the client, every keystroke, validation rule, and leaf rebuild must execute in 0ms on a synchronous signal graph."
β Randal L. Schwartz
When Flutter developers inspected the code samples from our bloc_signals_genui 1.0 announcement , their classic package:bloc muscle memory sparked an immediate question:
// Mutate bound form fields synchronously in 0ms surfaceBloc . add ( const UpdateFormField ( path: '/user/name' , value: 'Randal L. Schwartz' , ), );
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The question went something like this: Wait. It is called a Bloc and you are calling .add(event) . Doesn't that push the event into an asynchronous StreamController sink, schedule a microtask on the Dart event loop, sever the call stack, and update the UI in a later frame?
In BlocSignal , .add() dispatches events synchronously on the active call stack.β¦
