Add Effect v4 version

2026-06-22 02:04:20 +02:00
parent b7ea35006d
commit 091e102b23
41 changed files with 3832 additions and 2 deletions
@@ -0,0 +1,354 @@
+import { render, screen, waitFor } from "@testing-library/react"
+import { Context, Effect, Layer } from "effect"
+import * as React from "react"
+import { afterEach, describe, expect, it, vi } from "vitest"
+import * as Component from "../src/Component.js"
+import * as ReactRuntime from "../src/ReactRuntime.js"
+
+
+class ValueService extends Context.Service<ValueService, { readonly value: string }>()("ValueService") {}
+
+afterEach(() => {
+    vi.useRealTimers()
+})
+
+describe("Component", () => {
+    it("runs useOnMount only once across rerenders", async () => {
+        const onMount = vi.fn(() => Effect.succeed("mounted"))
+        const runtime = ReactRuntime.make(Layer.empty)
+        const effectRuntime = await runtime.runtime.context()
+
+        const Probe = Component.makeUntraced("UseOnMountProbe")(function*() {
+            const value = yield* Component.useOnMount(onMount)
+            return <div>{value}</div>
+        }).pipe(
+            Component.withRuntime(runtime.context)
+        )
+
+        const view = render(
+            <runtime.context.Provider value={effectRuntime}>
+                <Probe />
+            </runtime.context.Provider>
+        )
+
+        await screen.findByText("mounted")
+        expect(onMount).toHaveBeenCalledTimes(1)
+
+        view.rerender(
+            <runtime.context.Provider value={effectRuntime}>
+                <Probe />
+            </runtime.context.Provider>
+        )
+        expect(await screen.findByText("mounted")).toBeTruthy()
+        expect(onMount).toHaveBeenCalledTimes(1)
+
+        view.unmount()
+        await runtime.runtime.dispose()
+    })
+
+    it("recomputes useOnChange only when dependencies change", async () => {
+        const onChange = vi.fn((value: number) => Effect.succeed(`value:${value}`))
+        const runtime = ReactRuntime.make(Layer.empty)
+        const effectRuntime = await runtime.runtime.context()
+
+        const Probe = Component.makeUntraced("UseOnChangeProbe")(function*(props: { readonly value: number }) {
+            const result = yield* Component.useOnChange(() => onChange(props.value), [props.value], {
+                finalizerExecutionDebounce: 0,
+            })
+
+            return <div>{result}</div>
+        }).pipe(
+            Component.withRuntime(runtime.context)
+        )
+
+        const view = render(
+            <runtime.context.Provider value={effectRuntime}>
+                <Probe value={1} />
+            </runtime.context.Provider>
+        )
+
+        await screen.findByText("value:1")
+        expect(onChange).toHaveBeenCalledTimes(1)
+
+        view.rerender(
+            <runtime.context.Provider value={effectRuntime}>
+                <Probe value={1} />
+            </runtime.context.Provider>
+        )
+
+        expect(await screen.findByText("value:1")).toBeTruthy()
+        expect(onChange).toHaveBeenCalledTimes(1)
+
+        view.rerender(
+            <runtime.context.Provider value={effectRuntime}>
+                <Probe value={2} />
+            </runtime.context.Provider>
+        )
+
+        await screen.findByText("value:2")
+        expect(onChange).toHaveBeenCalledTimes(2)
+
+        view.unmount()
+        await runtime.runtime.dispose()
+    })
+
+    it("closes the previous scope on dependency changes and unmount", async () => {
+        const cleanup = vi.fn()
+        const runtime = ReactRuntime.make(Layer.empty)
+        const effectRuntime = await runtime.runtime.context()
+
+        const Probe = Component.makeUntraced("ScopeCleanupProbe")(function*(props: { readonly value: string }) {
+            const result = yield* Component.useOnChange(
+                () => Effect.gen(function*() {
+                    yield* Effect.addFinalizer(() => Effect.sync(() => cleanup(props.value)))
+                    return props.value
+                }),
+                [props.value],
+                { finalizerExecutionDebounce: 0 },
+            )
+
+            return <div>{result}</div>
+        }).pipe(
+            Component.withRuntime(runtime.context)
+        )
+
+        const view = render(
+            <runtime.context.Provider value={effectRuntime}>
+                <Probe value="first" />
+            </runtime.context.Provider>
+        )
+
+        await screen.findByText("first")
+        expect(cleanup).not.toHaveBeenCalled()
+
+        view.rerender(
+            <runtime.context.Provider value={effectRuntime}>
+                <Probe value="second" />
+            </runtime.context.Provider>
+        )
+
+        await screen.findByText("second")
+        await waitFor(() => expect(cleanup).toHaveBeenCalledWith("first"))
+        expect(cleanup).toHaveBeenCalledTimes(1)
+
+        view.unmount()
+
+        await waitFor(() => expect(cleanup).toHaveBeenCalledWith("second"))
+        expect(cleanup).toHaveBeenCalledTimes(2)
+        await runtime.runtime.dispose()
+    })
+
+    it("runs useReactEffect setup and cleanup when dependencies change", async () => {
+        const lifecycle = vi.fn<(message: string) => void>()
+        const runtime = ReactRuntime.make(Layer.empty)
+        const effectRuntime = await runtime.runtime.context()
+
+        const Probe = Component.makeUntraced("UseReactEffectProbe")(function*(props: { readonly value: string }) {
+            yield* Component.useReactEffect(() =>
+                Effect.gen(function*() {
+                    yield* Effect.sync(() => lifecycle(`mount:${props.value}`))
+                    yield* Effect.addFinalizer(() => Effect.sync(() => lifecycle(`cleanup:${props.value}`)))
+                }),
+            [props.value])
+
+            return <div>{props.value}</div>
+        }).pipe(
+            Component.withRuntime(runtime.context)
+        )
+
+        const view = render(
+            <runtime.context.Provider value={effectRuntime}>
+                <Probe value="first" />
+            </runtime.context.Provider>
+        )
+
+        await screen.findByText("first")
+        await waitFor(() => expect(lifecycle).toHaveBeenCalledWith("mount:first"))
+
+        view.rerender(
+            <runtime.context.Provider value={effectRuntime}>
+                <Probe value="second" />
+            </runtime.context.Provider>
+        )
+
+        await screen.findByText("second")
+        await waitFor(() => expect(lifecycle).toHaveBeenCalledWith("cleanup:first"))
+        await waitFor(() => expect(lifecycle).toHaveBeenCalledWith("mount:second"))
+
+        view.unmount()
+
+        await waitFor(() => expect(lifecycle).toHaveBeenCalledWith("cleanup:second"))
+        expect(lifecycle.mock.calls.map(([message]) => message)).toEqual([
+            "mount:first",
+            "cleanup:first",
+            "mount:second",
+            "cleanup:second",
+        ])
+        await runtime.runtime.dispose()
+    })
+
+    it("keeps useCallbackSync stable until dependencies change", async () => {
+        const runtime = ReactRuntime.make(Layer.empty)
+        const effectRuntime = await runtime.runtime.context()
+        const seenCallbacks: Array<(value: number) => string> = []
+
+        const Probe = Component.makeUntraced("UseCallbackSyncProbe")(function*(props: { readonly prefix: string }) {
+            const callback = yield* Component.useCallbackSync(
+                (value: number) => Effect.succeed(`${props.prefix}:${value}`),
+                [props.prefix],
+            )
+
+            yield* Component.useOnMount(() => Effect.sync(() => {
+                seenCallbacks.push(callback)
+            }))
+
+            React.useEffect(() => {
+                seenCallbacks.push(callback)
+            }, [callback])
+
+            return <div>{callback(1)}</div>
+        }).pipe(
+            Component.withRuntime(runtime.context)
+        )
+
+        const view = render(
+            <runtime.context.Provider value={effectRuntime}>
+                <Probe prefix="a" />
+            </runtime.context.Provider>
+        )
+
+        await screen.findByText("a:1")
+        expect(seenCallbacks).toHaveLength(2)
+        expect(seenCallbacks[0]).toBe(seenCallbacks[1])
+        expect(seenCallbacks[0]?.(2)).toBe("a:2")
+
+        view.rerender(
+            <runtime.context.Provider value={effectRuntime}>
+                <Probe prefix="a" />
+            </runtime.context.Provider>
+        )
+
+        await screen.findByText("a:1")
+        expect(seenCallbacks).toHaveLength(2)
+
+        view.rerender(
+            <runtime.context.Provider value={effectRuntime}>
+                <Probe prefix="b" />
+            </runtime.context.Provider>
+        )
+
+        await screen.findByText("b:1")
+        await waitFor(() => expect(seenCallbacks).toHaveLength(3))
+        expect(seenCallbacks[2]).not.toBe(seenCallbacks[1])
+        expect(seenCallbacks[2]?.(2)).toBe("b:2")
+
+        view.unmount()
+        await runtime.runtime.dispose()
+    })
+
+    it("delays cleanup according to finalizerExecutionDebounce", async () => {
+        const cleanup = vi.fn()
+        const runtime = ReactRuntime.make(Layer.empty)
+        const effectRuntime = await runtime.runtime.context()
+
+        const Probe = Component.makeUntraced("DebouncedCleanupProbe")(function*(props: { readonly value: string }) {
+            const result = yield* Component.useOnChange(
+                () => Effect.gen(function*() {
+                    yield* Effect.addFinalizer(() => Effect.sync(() => cleanup(props.value)))
+                    return props.value
+                }),
+                [props.value],
+                { finalizerExecutionDebounce: "20 millis" },
+            )
+
+            return <div>{result}</div>
+        }).pipe(
+            Component.withRuntime(runtime.context)
+        )
+
+        const view = render(
+            <runtime.context.Provider value={effectRuntime}>
+                <Probe value="first" />
+            </runtime.context.Provider>
+        )
+
+        await screen.findByText("first")
+
+        view.rerender(
+            <runtime.context.Provider value={effectRuntime}>
+                <Probe value="second" />
+            </runtime.context.Provider>
+        )
+
+        await screen.findByText("second")
+        expect(cleanup).not.toHaveBeenCalled()
+
+        await new Promise(resolve => setTimeout(resolve, 5))
+        expect(cleanup).not.toHaveBeenCalled()
+
+        await waitFor(() => expect(cleanup).toHaveBeenCalledWith("first"), { timeout: 100 })
+
+        view.unmount()
+        await waitFor(() => expect(cleanup).toHaveBeenCalledWith("second"), { timeout: 100 })
+        await runtime.runtime.dispose()
+    })
+
+    it("does not remount a component when only nonReactiveTags change", async () => {
+        const mounts = vi.fn()
+        const unmounts = vi.fn()
+        const runtime = ReactRuntime.make(Layer.empty)
+        const effectRuntime = await runtime.runtime.context()
+
+        const SubComponent = Component.makeUntraced("NonReactiveSubComponent")(function*() {
+            const service = yield* ValueService
+
+            yield* Component.useOnMount(() => Effect.gen(function*() {
+                yield* Effect.sync(() => mounts())
+                yield* Effect.addFinalizer(() => Effect.sync(() => unmounts()))
+            }))
+
+            return <div>{service.value}</div>
+        }).pipe(
+            Component.withOptions({ nonReactiveTags: [ValueService] })
+        )
+
+        const Parent = Component.makeUntraced("NonReactiveParent")(function*(props: { readonly value: string }) {
+            const serviceLayer = React.useMemo(
+                () => Layer.succeed(ValueService, { value: props.value }),
+                [props.value],
+            )
+            const context = yield* Component.useContextFromLayer(serviceLayer, {
+                finalizerExecutionDebounce: 0,
+            })
+            const Child = yield* Effect.provide(SubComponent.use, context)
+
+            return <Child />
+        }).pipe(
+            Component.withRuntime(runtime.context)
+        )
+
+        const view = render(
+            <runtime.context.Provider value={effectRuntime}>
+                <Parent value="first" />
+            </runtime.context.Provider>
+        )
+
+        await screen.findByText("first")
+        expect(mounts).toHaveBeenCalledTimes(1)
+        expect(unmounts).not.toHaveBeenCalled()
+
+        view.rerender(
+            <runtime.context.Provider value={effectRuntime}>
+                <Parent value="second" />
+            </runtime.context.Provider>
+        )
+
+        await screen.findByText("second")
+        expect(mounts).toHaveBeenCalledTimes(1)
+        expect(unmounts).not.toHaveBeenCalled()
+
+        view.unmount()
+        await waitFor(() => expect(unmounts).toHaveBeenCalledTimes(1))
+        await runtime.runtime.dispose()
+    })
+})