packages/example/src/routes/query/usequery.tsx

@@ -21,7 +21,7 @@ function RouteComponent() {
 
     const query = R.useQuery({
         key: R.useStreamFromValues(["uuid4", count]),
-        query: () => Console.log(`Querying ${ count } IDs...`).pipe(
+        query: ([, count]) => Console.log(`Querying ${ count } IDs...`).pipe(
             Effect.andThen(Effect.sleep("500 millis")),
             Effect.andThen(HttpClient.get(`https://www.uuidtools.com/api/generate/v4/count/${ count }`)),
             HttpClient.withTracerPropagation(false),

packages/extension-query/src/QueryExtension.ts

@@ -1,5 +1,5 @@
 import * as AsyncData from "@typed/async-data"
-import { Context, Effect, Fiber, Layer, Ref, Stream, SubscriptionRef } from "effect"
+import { type Cause, Context, Effect, Fiber, Layer, Stream, SubscriptionRef } from "effect"
 import * as React from "react"
 import { ReffuseExtension, type ReffuseHelpers } from "reffuse"
 import * as QueryRunner from "./QueryRunner.js"
@@ -14,7 +14,7 @@ export interface UseQueryProps<K extends readonly unknown[], A, E, R> {
 
 export interface UseQueryResult<A, E> {
     readonly state: SubscriptionRef.SubscriptionRef<AsyncData.AsyncData<A, E>>
-    readonly refresh: Effect.Effect<Fiber.RuntimeFiber<void>>
+    readonly refresh: Effect.Effect<Fiber.RuntimeFiber<void, Cause.NoSuchElementException>>
     readonly layer: <Self, Id extends string>(
         tag: Context.TagClass<Self, Id, QueryService.QueryService<A, E>>
     ) => Layer.Layer<Self>
@@ -28,16 +28,18 @@ export const QueryExtension = ReffuseExtension.make(() => ({
     ): UseQueryResult<A, E> {
         const runner = this.useMemo(() => QueryRunner.make({
             key: props.key,
-            query: props.query(),
+            query: props.query,
         }), [props.key])
 
-        this.useFork(() => Effect.addFinalizer(() => runner.forkInterrupt).pipe(
-            Effect.andThen(Stream.runForEach(runner.key, () =>
-                Ref.set(runner.queryRef, props.query()).pipe(
-                    Effect.andThen(runner.forkFetch)
-                )
-            ))
-        ), [runner])
+        // this.useFork(() => Effect.addFinalizer(() => runner.forkInterrupt).pipe(
+        //     Effect.andThen(Stream.runForEach(runner.key, () =>
+        //         Ref.set(runner.queryRef, props.query()).pipe(
+        //             Effect.andThen(runner.forkFetch)
+        //         )
+        //     ))
+        // ), [runner])
+
+        this.useFork(() => runner.fetchOnKeyChange, [runner])
 
         this.useFork(() => (props.refreshOnWindowFocus ?? true)
             ? runner.refreshOnWindowFocus

packages/extension-query/src/QueryRunner.ts

@@ -1,6 +1,6 @@
 import { BrowserStream } from "@effect/platform-browser"
 import * as AsyncData from "@typed/async-data"
-import { Effect, Fiber, identity, Option, Ref, Stream, SubscriptionRef } from "effect"
+import { type Cause, Effect, Fiber, identity, Option, Ref, Scope, Stream, SubscriptionRef } from "effect"
 
 
 export interface QueryRunner<K extends readonly unknown[], A, E, R> {
@@ -8,13 +8,13 @@ export interface QueryRunner<K extends readonly unknown[], A, E, R> {
     readonly query: (key: K) => Effect.Effect<A, E, R>
 
     readonly stateRef: SubscriptionRef.SubscriptionRef<AsyncData.AsyncData<A, E>>
-    readonly fiberRef: SubscriptionRef.SubscriptionRef<Option.Option<Fiber.RuntimeFiber<void>>>
+    readonly fiberRef: SubscriptionRef.SubscriptionRef<Option.Option<Fiber.RuntimeFiber<void, Cause.NoSuchElementException>>>
 
-    readonly interrupt: Effect.Effect<void>
-    readonly forkInterrupt: Effect.Effect<Fiber.RuntimeFiber<void>>
-    readonly forkFetch: Effect.Effect<Fiber.RuntimeFiber<void>>
-    readonly forkRefresh: Effect.Effect<Fiber.RuntimeFiber<void>>
+    readonly forkInterrupt: Effect.Effect<Fiber.RuntimeFiber<void, Cause.NoSuchElementException>>
+    readonly forkFetch: Effect.Effect<Fiber.RuntimeFiber<void, Cause.NoSuchElementException>>
+    readonly forkRefresh: Effect.Effect<Fiber.RuntimeFiber<void, Cause.NoSuchElementException>>
 
+    readonly fetchOnKeyChange: Effect.Effect<void, Cause.NoSuchElementException, Scope.Scope>
     readonly refreshOnWindowFocus: Effect.Effect<void>
 }
 
@@ -29,9 +29,9 @@ export const make = <K extends readonly unknown[], A, E, R>(
 ): Effect.Effect<QueryRunner<K, A, E, R>, never, R> => Effect.gen(function*() {
     const context = yield* Effect.context<R>()
 
-    const currentKeyRef = yield* SubscriptionRef.make(Option.none<K>())
+    const latestKeyRef = yield* SubscriptionRef.make(Option.none<K>())
     const stateRef = yield* SubscriptionRef.make(AsyncData.noData<A, E>())
-    const fiberRef = yield* SubscriptionRef.make(Option.none<Fiber.RuntimeFiber<void>>())
+    const fiberRef = yield* SubscriptionRef.make(Option.none<Fiber.RuntimeFiber<void, Cause.NoSuchElementException>>())
 
     const interrupt = fiberRef.pipe(
         Effect.flatMap(Option.match({
@@ -57,12 +57,14 @@ export const make = <K extends readonly unknown[], A, E, R>(
     const forkFetch = interrupt.pipe(
         Effect.andThen(
             Ref.set(stateRef, AsyncData.loading()).pipe(
-                Effect.andThen(queryRef),
+                Effect.andThen(latestKeyRef),
                 Effect.flatMap(identity),
-                Effect.matchCauseEffect({
-                    onSuccess: v => Ref.set(stateRef, AsyncData.success(v)),
-                    onFailure: c => Ref.set(stateRef, AsyncData.failure(c)),
-                }),
+                Effect.flatMap(key => query(key).pipe(
+                    Effect.matchCauseEffect({
+                        onSuccess: v => Ref.set(stateRef, AsyncData.success(v)),
+                        onFailure: c => Ref.set(stateRef, AsyncData.failure(c)),
+                    })
+                )),
 
                 Effect.provide(context),
                 Effect.fork,
@@ -88,12 +90,14 @@ export const make = <K extends readonly unknown[], A, E, R>(
                     return AsyncData.refreshing(previous.previous)
                 return AsyncData.loading()
             }).pipe(
-
-                Effect.andThen(props.query()),
-                Effect.matchCauseEffect({
-                    onSuccess: v => Ref.set(stateRef, AsyncData.success(v)),
-                    onFailure: c => Ref.set(stateRef, AsyncData.failure(c)),
-                }),
+                Effect.andThen(latestKeyRef),
+                Effect.flatMap(identity),
+                Effect.flatMap(key => query(key).pipe(
+                    Effect.matchCauseEffect({
+                        onSuccess: v => Ref.set(stateRef, AsyncData.success(v)),
+                        onFailure: c => Ref.set(stateRef, AsyncData.failure(c)),
+                    })
+                )),
 
                 Effect.provide(context),
                 Effect.fork,
@@ -110,14 +114,22 @@ export const make = <K extends readonly unknown[], A, E, R>(
         Effect.forkDaemon,
     )
 
+    const fetchOnKeyChange = Effect.addFinalizer(() => interrupt).pipe(
+        Effect.andThen(Stream.runForEach(key, latestKey =>
+            Ref.set(latestKeyRef, Option.some(latestKey)).pipe(
+                Effect.andThen(forkFetch)
+            )
+        ))
+    )
+
     const refreshOnWindowFocus = Stream.runForEach(
         BrowserStream.fromEventListenerWindow("focus"),
         () => forkRefresh,
     )
 
     return {
-        key: props.key,
-        query: props.query,
+        key,
+        query,
 
         stateRef,
         fiberRef,
@@ -126,6 +138,7 @@ export const make = <K extends readonly unknown[], A, E, R>(
         forkFetch,
         forkRefresh,
 
+        fetchOnKeyChange,
         refreshOnWindowFocus,
     }
 })

packages/extension-query/src/QueryService.ts

@@ -1,10 +1,10 @@
 import * as AsyncData from "@typed/async-data"
-import { Effect, Fiber, SubscriptionRef } from "effect"
+import { type Cause, Effect, Fiber, SubscriptionRef } from "effect"
 
 
 export interface QueryService<A, E> {
     readonly state: SubscriptionRef.SubscriptionRef<AsyncData.AsyncData<A, E>>
-    readonly refresh: Effect.Effect<Fiber.RuntimeFiber<void>>
+    readonly refresh: Effect.Effect<Fiber.RuntimeFiber<void, Cause.NoSuchElementException>>
 }
 
 export const Tag = <const Id extends string>(id: Id) => <