By Randal L. Schwartz & the BlocSignal Team
State management in Flutter and Dart has arrived at an intriguing crossroads.
In a previous article, Why ValueNotifier Fails at Scale: The Non-Composability Problem (and How Signals Fix It), we explored how moving from Flutter's built-in ValueNotifier / ChangeNotifier to Signal-based reactive primitives (signal(), computed(), effect()) solves the non-composability wall. Signals brought fine-grained reactivity, sub-millisecond updates, automatic dependency tracking, and 0ms microtask queue latency.
However, as enterprise teams and large client projects adopted raw signals, a new "pitfall of freedom" emerged:
"When any UI widget can read, write, or overwrite .value on a global signal from anywhere in the codebase, architecture breaks down."
