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useContext refactoring
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This commit is contained in:
Julien Valverdé
2025-08-11 12:57:38 +02:00
parent e7c85a43eb
commit 6d3361f399
2 changed files with 9 additions and 7 deletions
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14
packages/effect-fc/src/hooks/Hooks/useContext.ts
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@@ -1,4 +1,4 @@
import { type Context, Effect, type Layer, Scope } from "effect" import { type Context, Effect, Layer, ManagedRuntime, Scope } from "effect"
import type { ScopeOptions } from "./ScopeOptions.js" import type { ScopeOptions } from "./ScopeOptions.js"
import { useMemo } from "./useMemo.js" import { useMemo } from "./useMemo.js"
import { useScope } from "./useScope.js" import { useScope } from "./useScope.js"
@@ -8,16 +8,18 @@ export const useContext: {
<ROut, E, RIn>( <ROut, E, RIn>(
layer: Layer.Layer<ROut, E, RIn>, layer: Layer.Layer<ROut, E, RIn>,
options?: ScopeOptions, options?: ScopeOptions,
): Effect.Effect<Context.Context<ROut>, E, Exclude<RIn, Scope.Scope>> ): Effect.Effect<Context.Context<ROut>, E, RIn>
} = Effect.fnUntraced(function* <ROut, E, RIn>( } = Effect.fnUntraced(function* <ROut, E, RIn>(
layer: Layer.Layer<ROut, E, RIn>, layer: Layer.Layer<ROut, E, RIn>,
options?: ScopeOptions, options?: ScopeOptions,
) { ) {
const scope = yield* useScope([layer], options) const scope = yield* useScope([layer], options)
return yield* useMemo(() => Effect.provideService( return yield* useMemo(() => Effect.context<RIn>().pipe(
Effect.provide(Effect.context<ROut>(), layer), Effect.map(context => ManagedRuntime.make(Layer.provide(layer, Layer.succeedContext(context)))),
Scope.Scope, Effect.tap(runtime => Effect.addFinalizer(() => runtime.disposeEffect)),
scope, Effect.andThen(runtime => runtime.runtimeEffect),
Effect.andThen(runtime => runtime.context),
Effect.provideService(Scope.Scope, scope),
), [scope]) ), [scope])
}) })

2
packages/example/src/todo/TodosState.service.ts
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@@ -6,7 +6,7 @@ import { SubscriptionSubRef } from "effect-fc/types"
export class TodosState extends Effect.Service<TodosState>()("TodosState", { export class TodosState extends Effect.Service<TodosState>()("TodosState", {
effect: Effect.fn("TodosState")(function*(key: string) { scoped: Effect.fnUntraced(function*(key: string) {
const kv = yield* KeyValueStore.KeyValueStore const kv = yield* KeyValueStore.KeyValueStore
const readFromLocalStorage = Console.log("Reading todos from local storage...").pipe( const readFromLocalStorage = Console.log("Reading todos from local storage...").pipe(