Docs

packages/docs/docs/getting-started.md

@@ -271,11 +271,15 @@ const initialData = yield* Component.useOnMount(() => loadInitialData)
 const label = yield* Component.useOnChange(() => formatUserLabel(id), [id])
 ```
 
-- `Component.useReactEffect`: Effect-powered `React.useEffect` with scoped
+- `Component.useReactEffect`: Effect-powered `React.useEffect` for side effects
-  finalizers.
+  that do not need to compute render output or trigger a re-render. The Effect
+  must be synchronous and can register scoped finalizers.
 
 ```tsx
-yield* Component.useReactEffect(() => subscribe(id), [id])
+yield* Component.useReactEffect(
+  () => Effect.forkScoped(subscribeToUser(id)),
+  [id],
+)
 ```
 
 - `Component.useReactLayoutEffect`: Effect-powered `React.useLayoutEffect` with scoped
@@ -310,13 +314,6 @@ const save = yield* Component.useCallbackPromise(
 return <button onClick={() => void save(user)}>Save</button>
 ```
 
-- `Component.useContextFromLayer`: create a React runtime context from an Effect
-  `Layer`.
-
-```tsx
-yield* Component.useContextFromLayer(UserLive)
-```
-
 ## Use React Normally
 
 An Effect-FC component is still a React function component. Anything you can do
@@ -360,11 +357,11 @@ const GreetingView = Component.make("Greeting")(function* (props: {
 ```
 
 Service values in the runtime context are reactive by default. If a provided
-service instance changes, Effect-FC recreates the React component function for
+service instance changes, Effect-FC unmounts and mounts again the components
-components that depend on that context, so the component reads the new service
+that depend on that context, so they read the new service and restart their
-and its scoped lifecycle can restart with the new environment. For services that
+scoped lifecycle with the new environment. For services that should not trigger
-should not trigger that behavior, pass their tags with `Component.withOptions({
+that behavior, pass their tags with `Component.withOptions({ nonReactiveTags:
-nonReactiveTags: [...] })`.
+[...] })`.
 
 ## Provide Services To A Subtree
 
@@ -395,6 +392,11 @@ is created on every render, Effect-FC has to build a new context, which can
 cause unnecessary re-renders and scoped lifecycle restarts. Define static layers
 outside the component, or memoize layers that depend on React props or state.
 
+Layers built with `useContextFromLayer` are scoped to the component that builds
+them. That means service construction can register scoped logic, acquire
+resources, fork scoped fibers, and add finalizers that are tied to that
+component's lifecycle.
+
 ## Where To Go Next
 
 Once the runtime and component boundary are in place, the rest of the library