Reactivity phase 1

lib/reactivity/src/lib.rs

@@ -0,0 +1,11 @@
+//! Fine-grained reactivity primitives for RUIN.
+//!
+//! This crate is intentionally layered on top of `ruin-runtime`. The reactive graph is
+//! single-threaded and designed to live on a runtime-managed thread, while async work feeds it
+//! from the edges by updating state or emitting events.
+
+mod id;
+mod reactor;
+
+pub use id::NodeId;
+pub use reactor::{ReactCycleError, Reactor, current};