0.2.0 #5
@@ -58,27 +58,6 @@ describe("Lens", () => {
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expect(result[1]).toEqual(Either.left("mapped"))
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})
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test("catchAllRead recovers from read failures", async () => {
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const result = await Effect.runPromise(
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Effect.flatMap(
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SubscriptionRef.make(42),
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fallback => Lens.get(
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Lens.catchAllRead(
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Lens.make<number, "read", never, never, never>({
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get: Effect.fail("read" as const),
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changes: Stream.fail("read" as const),
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commit: () => Effect.void,
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lock: Effect.succeed(identity),
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}),
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() => Lens.fromSubscriptionRef(fallback),
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),
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),
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),
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)
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expect(result).toBe(42)
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})
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test("tapErrorRead runs an effect on read failures", async () => {
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const result = await Effect.runPromise(
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Effect.flatMap(
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@@ -1,46 +0,0 @@
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import { Console, Effect, Stream, SubscriptionRef } from "effect"
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import { Lens } from "./index.js"
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class State extends Effect.Service<State>()("State", {
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effect: Effect.gen(function*() {
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const ref = yield* SubscriptionRef.make({
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users: [
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{ name: "Adolf" }
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]
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})
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return {
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lens: Lens.fromSubscriptionRef(ref)
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} as const
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})
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}) {}
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Effect.gen(function*() {
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const lens = Lens.unwrap(Effect.andThen(
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State,
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state => state.lens,
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)).pipe(
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Lens.provideContext(yield* Effect.provide(Effect.context<State>(), State.Default))
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)
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const adolfNameLens = lens.pipe(
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Lens.focusObjectOn("users"),
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Lens.focusArrayAt(0),
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Lens.focusObjectOn("name"),
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Lens.catchAllRead(() => Lens.make({
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get: Effect.succeed("User not found"),
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changes: Stream.make("User not found"),
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commit: () => Console.log("Test"),
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lock: Effect.succeed(Effect.unsafeMakeSemaphore(1).withPermits(1)),
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})),
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)
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console.log(yield* Lens.get(adolfNameLens))
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yield* Lens.set(lens, { users: [] })
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yield* Lens.set(adolfNameLens, "Himmler")
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console.log(yield* Lens.get(adolfNameLens))
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}).pipe(
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Effect.runSync,
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)
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