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| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 | 1x 1x 8x 10x 10x 2x 8x 6x | import React, { createContext, useContext, useMemo } from "react";
import type { Context } from "effect";
import { ManagedRuntime } from "effect";
// Create a context to hold the ManagedRuntime
const EffectRuntimeContext = createContext<ManagedRuntime.ManagedRuntime<
unknown,
unknown
> | null>(null);
export interface EffectProviderProps<R, E> {
runtime: ManagedRuntime.ManagedRuntime<R, E>;
children: React.ReactNode;
}
/**
* Provides an Effect Runtime to the application tree.
*/
export const EffectProvider = <R, E>({
runtime,
children,
}: EffectProviderProps<R, E>) => {
return React.createElement(
EffectRuntimeContext.Provider,
{
value: runtime as unknown as ManagedRuntime.ManagedRuntime<
unknown,
unknown
>,
},
children,
);
};
/**
* Hook to access a service from the Effect Runtime.
*/
export function useEffectService<Identifier, Service>(
tag: Context.Tag<Identifier, Service>,
): Service {
const runtime = useContext(EffectRuntimeContext);
if (!runtime) {
throw new Error("useEffectService must be used within an EffectProvider");
}
// Resolve the service once per runtime/tag pair.
return useMemo(() => {
return (
runtime as ManagedRuntime.ManagedRuntime<Identifier, Service>
).runSync(tag);
}, [runtime, tag]);
}
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