Thilawyn
9a3c91b50b
Co-authored-by: Julien Valverdé <julien.valverde@mailo.com> Reviewed-on: Thilawyn/effect-fc#5
33 lines
1.1 KiB
TypeScript
33 lines
1.1 KiB
TypeScript
import { Effect, Equivalence, Option, Stream } from "effect"
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import * as React from "react"
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import { useFork } from "./useFork.js"
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export const useSubscribeStream: {
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<A, E, R>(
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stream: Stream.Stream<A, E, R>
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): Effect.Effect<Option.Option<A>, never, R>
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<A extends NonNullable<unknown>, E, R>(
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stream: Stream.Stream<A, E, R>,
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initialValue: A,
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): Effect.Effect<Option.Some<A>, never, R>
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} = Effect.fnUntraced(function* <A extends NonNullable<unknown>, E, R>(
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stream: Stream.Stream<A, E, R>,
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initialValue?: A,
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) {
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const [reactStateValue, setReactStateValue] = React.useState(
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// biome-ignore lint/correctness/useExhaustiveDependencies: no reactivity needed
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React.useMemo(() => initialValue
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? Option.some(initialValue)
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: Option.none(),
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[])
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)
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yield* useFork(() => Stream.runForEach(
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Stream.changesWith(stream, Equivalence.strict()),
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v => Effect.sync(() => setReactStateValue(Option.some(v))),
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), [stream])
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return reactStateValue as Option.Some<A>
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})
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