packages/reffuse/src/Reffuse.ts

@@ -1,5 +1,6 @@
-import { Effect, Exit, ManagedRuntime } from "effect"
-import { createContext, useContext, type Context, type ReactNode } from "react"
+import { Effect, Exit, Fiber, ManagedRuntime, Stream, SubscriptionRef } from "effect"
+import type { RunForkOptions } from "effect/Runtime"
+import React, { useMemo } from "react"
 
 
 export class Reffuse<R, ER> {
@@ -7,12 +8,12 @@ export class Reffuse<R, ER> {
     constructor(
         private readonly runtime: ManagedRuntime.ManagedRuntime<R, ER>
     ) {
-        this.Context = createContext(runtime)
+        this.Context = React.createContext(runtime)
     }
 
-    readonly Context: Context<ManagedRuntime.ManagedRuntime<R, ER>>
+    readonly Context: React.Context<ManagedRuntime.ManagedRuntime<R, ER>>
 
-    Provider(props: { readonly children: ReactNode }) {
+    Provider(props: { readonly children: React.ReactNode }) {
         return this.Context.Provider({
             ...props,
             value: this.runtime,
@@ -21,7 +22,7 @@ export class Reffuse<R, ER> {
 
 
     useRuntime(): ManagedRuntime.ManagedRuntime<R, ER> {
-        return useContext(this.Context)
+        return React.useContext(this.Context)
     }
 
 
@@ -47,4 +48,34 @@ export class Reffuse<R, ER> {
         return this.useRuntime().runPromiseExit(effect, options)
     }
 
+    runFork<A, E>(
+        self: Effect.Effect<A, E, R>,
+        options?: RunForkOptions,
+    ): Fiber.RuntimeFiber<A, ER | E> {
+        return this.useRuntime().runFork(self, options)
+    }
+
+
+    useFork<A, E>(
+        self: Effect.Effect<A, E, R>,
+        deps?: React.DependencyList,
+        options?: RunForkOptions,
+    ): void {
+        return React.useEffect(() => {
+            const fiber = this.runFork(self, options)
+            return () => { this.runFork(Fiber.interrupt(fiber)) }
+        }, deps)
+    }
+
+    useRefState<A>(ref: SubscriptionRef.SubscriptionRef<A>) {
+        const initial = useMemo(() => this.runSync(ref), [ref])
+        const [value, setValueInternal] = React.useState(initial)
+
+        this.useFork(Stream.runForEach(ref.changes, v => Effect.sync(() =>
+            setValueInternal(v)
+        )))
+
+        return []
+    }
+
 }