Runtime refactoring

packages/effect-fc/src/ReactRuntime.ts

@@ -0,0 +1,64 @@
+import { Effect, type Layer, ManagedRuntime, Predicate, type Runtime } from "effect"
+import * as React from "react"
+
+
+export const TypeId: unique symbol = Symbol.for("effect-fc/ReactRuntime")
+export type TypeId = typeof TypeId
+
+export interface ReactRuntime<R, ER> {
+    new(_: never): {}
+    readonly [TypeId]: TypeId
+    readonly runtime: ManagedRuntime.ManagedRuntime<R, ER>
+    readonly context: React.Context<Runtime.Runtime<R>>
+}
+
+const ReactRuntimeProto = Object.freeze({ [TypeId]: TypeId } as const)
+
+
+export const isReactRuntime = (u: unknown): u is ReactRuntime<unknown, unknown> => Predicate.hasProperty(u, TypeId)
+
+export const make = <R, ER>(
+    layer: Layer.Layer<R, ER>,
+    memoMap?: Layer.MemoMap,
+): ReactRuntime<R, ER> => Object.setPrototypeOf(
+    Object.assign(function() {}, {
+        runtime: ManagedRuntime.make(layer, memoMap),
+        context: React.createContext<Runtime.Runtime<R>>(null!),
+    }),
+    ReactRuntimeProto,
+)
+
+
+export namespace Provider {
+    export interface Props<R, ER> extends React.SuspenseProps {
+        readonly runtime: ReactRuntime<R, ER>
+        readonly children?: React.ReactNode
+    }
+}
+
+export const Provider = <R, ER>(
+    { runtime, children, ...suspenseProps }: Provider.Props<R, ER>
+): React.ReactNode => {
+    const promise = React.useMemo(() => Effect.runPromise(runtime.runtime.runtimeEffect), [runtime])
+
+    return React.createElement(
+        React.Suspense,
+        suspenseProps,
+        React.createElement(ProviderInner<R, ER>, { runtime, promise, children }),
+    )
+}
+
+namespace ProviderInner {
+    export interface Props<R, ER> {
+        readonly runtime: ReactRuntime<R, ER>
+        readonly promise: Promise<Runtime.Runtime<R>>
+        readonly children?: React.ReactNode
+    }
+}
+
+const ProviderInner = <R, ER>(
+    { runtime, promise, children }: ProviderInner.Props<R, ER>
+): React.ReactNode => {
+    const value = React.use(promise)
+    return React.createElement(runtime.context, { value }, children)
+}