import { it as effectIt } from "@effect/vitest";import { HostProcessPlatform } from "@t3tools/shared/hostProcess";import * as Cause from "effect/Cause";import * as Effect from "effect/Effect";import * as Exit from "effect/Exit";import * as FileSystem from "effect/FileSystem";import * as Fiber from "effect/Fiber";import * as Layer from "effect/Layer";import * as Logger from "effect/Logger";import * as Option from "effect/Option";import * as Path from "effect/Path";import * as Schema from "effect/Schema";import type * as Scope from "effect/Scope";import { TestClock } from "effect/testing";import { beforeEach, describe, expect, it, vi } from "vite-plus/test"; import * as DesktopEnvironment from "../app/DesktopEnvironment.ts";import * as ElectronWindow from "../electron/ElectronWindow.ts";import * as BrowserSession from "./BrowserSession.ts";import * as PreviewManager from "./Manager.ts"; const { createFromPath, fromId, getFocusedWebContents, mkdir, showItemInFolder, webviewSend, writeFile, writeImage,} = vi.hoisted(() => ({ createFromPath: vi.fn((): { readonly isEmpty: () => boolean } => ({ isEmpty: () => false })), fromId: vi.fn(() => null), getFocusedWebContents: vi.fn(() => null), mkdir: vi.fn((_path: string) => undefined), showItemInFolder: vi.fn(), webviewSend: vi.fn(), writeFile: vi.fn((_path: string, _data: Uint8Array) => undefined), writeImage: vi.fn(),})); vi.mock("electron", () => ({ clipboard: { writeImage, }, nativeImage: { createFromPath, }, shell: { showItemInFolder, }, session: { fromPartition: vi.fn(), }, webContents: { fromId, getFocusedWebContents, },})); const browserSessionLayer = Layer.succeed( BrowserSession.BrowserSession, BrowserSession.BrowserSession.of({ getPartition: () => Effect.succeed("persist:t3code-preview-test"), isPartition: (partition) => partition.startsWith("persist:t3code-preview-"), getSession: () => Effect.die("unexpected getSession"), clearCookies: () => Effect.void, clearCache: () => Effect.void, }),); const environmentLayer = Layer.succeed( DesktopEnvironment.DesktopEnvironment, DesktopEnvironment.DesktopEnvironment.of({ browserArtifactsDir: "/tmp/t3/dev/browser-artifacts", } as DesktopEnvironment.DesktopEnvironment["Service"]),); const fileSystemLayer = FileSystem.layerNoop({ makeDirectory: (path) => Effect.sync(() => { mkdir(path); }), writeFile: (path, data) => Effect.sync(() => { writeFile(path, data); }),}); const layer = PreviewManager.layer.pipe( Layer.provideMerge(browserSessionLayer), Layer.provideMerge(environmentLayer), Layer.provideMerge(fileSystemLayer), Layer.provideMerge(Path.layer), Layer.provideMerge(Layer.succeed(HostProcessPlatform, "linux")),);const encodePreviewManagerError = Schema.encodeSync(PreviewManager.PreviewManagerError); const withManager = <A>( use: ( manager: PreviewManager.PreviewManager["Service"], ) => Effect.Effect<A, PreviewManager.PreviewManagerError, Scope.Scope>,) => Effect.gen(function* () { const manager = yield* PreviewManager.PreviewManager; return yield* use(manager); }).pipe(Effect.provide(layer), Effect.scoped); describe("PreviewManager", () => { beforeEach(() => { fromId.mockClear(); getFocusedWebContents.mockReset(); getFocusedWebContents.mockReturnValue(null); mkdir.mockClear(); writeFile.mockClear(); showItemInFolder.mockClear(); writeImage.mockClear(); createFromPath.mockClear(); webviewSend.mockClear(); }); effectIt.effect("reports an unregistered webview as temporarily unavailable", () => withManager((manager) => Effect.gen(function* () { expect(yield* manager.automationStatus("tab_1")).toEqual({ available: false, visible: true, tabId: "tab_1", url: null, title: null, loading: false, }); yield* manager.createTab("tab_1"); expect(yield* manager.automationStatus("tab_1")).toEqual({ available: false, visible: true, tabId: "tab_1", url: null, title: null, loading: false, }); expect(fromId).not.toHaveBeenCalled(); }), ), ); effectIt.effect("isolates failed state listeners and continues delivery", () => { const loggedErrors: Array<unknown> = []; const logger = Logger.make(({ message }) => { for (const value of Array.isArray(message) ? message : [message]) { if (typeof value === "object" && value !== null && "cause" in value) { loggedErrors.push(Cause.squash(value.cause as Cause.Cause<never>)); } } }); const deliveryError = new ElectronWindow.ElectronWindowOperationError({ operation: "send-window-message", platform: "darwin", windowId: 42, channel: "preview:state-change", cause: new Error("renderer unavailable"), }); const delivered = vi.fn(); return withManager((manager) => Effect.gen(function* () { yield* manager.subscribeStateChanges(() => Effect.die(deliveryError)); yield* manager.subscribeStateChanges((tabId, state) => Effect.sync(() => { delivered(tabId, state); }), ); const state = yield* manager.createTab("tab_listener_failure"); expect(delivered).toHaveBeenCalledOnce(); expect(delivered).toHaveBeenCalledWith("tab_listener_failure", state); expect(loggedErrors).toHaveLength(1); expect(loggedErrors[0]).toBeInstanceOf(ElectronWindow.ElectronWindowOperationError); expect(loggedErrors[0]).toMatchObject({ operation: "send-window-message", windowId: 42, channel: "preview:state-change", }); }), ).pipe( Effect.provide( Logger.layer([logger], { mergeWithExisting: false, }), ), ); }); effectIt.effect("does not swallow state listener interruption", () => withManager((manager) => Effect.gen(function* () { const exit = yield* Effect.scoped( Effect.gen(function* () { yield* manager.subscribeStateChanges(() => Effect.interrupt); return yield* Effect.exit(manager.createTab("tab_interrupted_listener")); }), ); expect(Exit.isFailure(exit)).toBe(true); if (Exit.isFailure(exit)) { expect(Cause.hasInterrupts(exit.cause)).toBe(true); } }), ), ); effectIt.effect("queues navigation until the webview registers", () => withManager((manager) => Effect.gen(function* () { const loadURL = vi.fn(async () => undefined); const listeners = new Map<string, (...args: never[]) => void>(); fromId.mockReturnValue({ id: 42, isDestroyed: () => false, getType: () => "webview", getURL: () => "about:blank", getTitle: () => "", isLoading: () => false, getZoomFactor: () => 1, setZoomFactor: vi.fn(), loadURL, on: vi.fn((event: string, listener: (...args: never[]) => void) => { listeners.set(event, listener); }), off: vi.fn(), ipc: { on: vi.fn(), off: vi.fn() }, send: webviewSend, navigationHistory: { canGoBack: () => false, canGoForward: () => false }, setWindowOpenHandler: vi.fn(), debugger: { isAttached: () => false, attach: vi.fn(), sendCommand: vi.fn(async () => undefined), on: vi.fn(), off: vi.fn(), }, } as never); yield* manager.navigate("tab_pending", "localhost:3200"); expect(yield* manager.automationStatus("tab_pending")).toEqual({ available: false, visible: true, tabId: "tab_pending", url: "http://localhost:3200/", title: "", loading: true, }); yield* manager.registerWebview("tab_pending", 42); yield* Effect.yieldNow; expect(loadURL).toHaveBeenCalledOnce(); expect(loadURL).toHaveBeenCalledWith("http://localhost:3200/"); }), ), ); effectIt.effect("mirrors Electron's effective zoom across registration and navigation", () => withManager((manager) => Effect.gen(function* () { let effectiveZoom = 0.9; let zoomReadable = true; let url = "https://example.com"; const listeners = new Map<string, (...args: unknown[]) => void>(); const setZoomFactor = vi.fn(); fromId.mockReturnValue({ id: 42, isDestroyed: () => false, getType: () => "webview", getURL: () => url, getTitle: () => "Example", isLoading: () => false, getZoomFactor: () => { if (!zoomReadable) throw new Error("zoom unavailable"); return effectiveZoom; }, setZoomFactor, on: vi.fn((event: string, listener: (...args: unknown[]) => void) => { listeners.set(event, listener); }), off: vi.fn(), ipc: { on: vi.fn(), off: vi.fn() }, send: webviewSend, navigationHistory: { canGoBack: () => false, canGoForward: () => false }, setWindowOpenHandler: vi.fn(), debugger: { isAttached: () => false, attach: vi.fn(), sendCommand: vi.fn(async () => undefined), on: vi.fn(), off: vi.fn(), }, } as never); const states: PreviewManager.PreviewTabState[] = []; yield* manager.subscribeStateChanges((_tabId, state) => Effect.sync(() => { states.push(state); }), ); yield* manager.createTab("tab_zoom"); yield* manager.registerWebview("tab_zoom", 42); expect(states.at(-1)?.zoomFactor).toBe(0.9); expect(setZoomFactor).not.toHaveBeenCalled(); effectiveZoom = 1.25; listeners.get("did-navigate")?.(); yield* Effect.yieldNow; expect(states.at(-1)?.zoomFactor).toBe(1.25); expect(setZoomFactor).not.toHaveBeenCalled(); zoomReadable = false; url = "https://example.com/after-zoom-read-failed"; listeners.get("did-navigate")?.(); yield* Effect.yieldNow; expect(states.at(-1)?.navStatus).toEqual({ kind: "Success", url, title: "Example", }); expect(states.at(-1)?.zoomFactor).toBe(1.25); const replacementSetZoomFactor = vi.fn(); fromId.mockReturnValue({ id: 43, isDestroyed: () => false, getType: () => "webview", getURL: () => url, getTitle: () => "Example", isLoading: () => false, getZoomFactor: () => 1, setZoomFactor: replacementSetZoomFactor, on: vi.fn(), off: vi.fn(), ipc: { on: vi.fn(), off: vi.fn() }, send: webviewSend, navigationHistory: { canGoBack: () => false, canGoForward: () => false }, setWindowOpenHandler: vi.fn(), debugger: { isAttached: () => false, attach: vi.fn(), sendCommand: vi.fn(async () => undefined), on: vi.fn(), off: vi.fn(), }, } as never); yield* manager.registerWebview("tab_zoom", 43); expect(replacementSetZoomFactor).toHaveBeenCalledWith(1.25); expect(states.at(-1)?.zoomFactor).toBe(1.25); }), ), ); effectIt.effect("emulates prefers-color-scheme and re-applies it across webview swaps", () => withManager((manager) => Effect.gen(function* () { const makeWebContents = (id: number) => { const sendCommand = vi.fn(async () => undefined); return { sendCommand, wc: { id, isDestroyed: () => false, isDevToolsOpened: () => false, getType: () => "webview", getURL: () => "https://example.com", getTitle: () => "Example", isLoading: () => false, getZoomFactor: () => 1, setZoomFactor: vi.fn(), on: vi.fn(), off: vi.fn(), ipc: { on: vi.fn(), off: vi.fn() }, send: webviewSend, navigationHistory: { canGoBack: () => false, canGoForward: () => false }, setWindowOpenHandler: vi.fn(), debugger: { isAttached: () => false, attach: vi.fn(), sendCommand, on: vi.fn(), off: vi.fn(), }, } as never, }; }; const first = makeWebContents(42); fromId.mockReturnValue(first.wc); const states: PreviewManager.PreviewTabState[] = []; yield* manager.subscribeStateChanges((_tabId, state) => Effect.sync(() => { states.push(state); }), ); yield* manager.createTab("tab_scheme"); yield* manager.registerWebview("tab_scheme", 42); yield* Effect.yieldNow; yield* manager.setColorScheme("tab_scheme", "dark"); expect(first.sendCommand).toHaveBeenCalledWith("Emulation.setEmulatedMedia", { features: [{ name: "prefers-color-scheme", value: "dark" }], }); expect(states.at(-1)?.colorScheme).toBe("dark"); const replacement = makeWebContents(43); fromId.mockReturnValue(replacement.wc); yield* manager.registerWebview("tab_scheme", 43); yield* Effect.yieldNow; expect(replacement.sendCommand).toHaveBeenCalledWith("Emulation.setEmulatedMedia", { features: [{ name: "prefers-color-scheme", value: "dark" }], }); expect(states.at(-1)?.colorScheme).toBe("dark"); yield* manager.setColorScheme("tab_scheme", "system"); expect(replacement.sendCommand).toHaveBeenCalledWith("Emulation.setEmulatedMedia", { features: [{ name: "prefers-color-scheme", value: "" }], }); expect(states.at(-1)?.colorScheme).toBe("system"); }), ), ); effectIt.effect("keeps a main-frame load failure visible until a retry starts", () => withManager((manager) => Effect.gen(function* () { const url = "http://localhost:5733/"; let loading = false; const listeners = new Map<string, (...args: unknown[]) => void>(); fromId.mockReturnValue({ id: 42, isDestroyed: () => false, getType: () => "webview", getURL: () => url, getTitle: () => "localhost:5733", isLoading: () => loading, getZoomFactor: () => 1, setZoomFactor: vi.fn(), on: vi.fn((event: string, listener: (...args: unknown[]) => void) => { listeners.set(event, listener); }), off: vi.fn(), ipc: { on: vi.fn(), off: vi.fn() }, send: webviewSend, navigationHistory: { canGoBack: () => false, canGoForward: () => false }, setWindowOpenHandler: vi.fn(), debugger: { isAttached: () => false, attach: vi.fn(), sendCommand: vi.fn(async () => undefined), on: vi.fn(), off: vi.fn(), }, } as never); const statuses: PreviewManager.PreviewNavStatus[] = []; yield* manager.subscribeStateChanges((_tabId, state) => Effect.sync(() => { statuses.push(state.navStatus); }), ); yield* manager.createTab("tab_failed"); yield* manager.registerWebview("tab_failed", 42); listeners.get("did-fail-load")?.( {}, -105, "ERR_NAME_NOT_RESOLVED", "https://missing-frame.example/", false, ); yield* Effect.yieldNow; expect(statuses.at(-1)?.kind).toBe("Success"); loading = true; listeners.get("did-start-loading")?.(); yield* Effect.yieldNow; expect(statuses.at(-1)?.kind).toBe("Loading"); loading = false; listeners.get("did-fail-load")?.({}, -102, "ERR_CONNECTION_REFUSED", url, true); listeners.get("did-stop-loading")?.(); listeners.get("page-title-updated")?.();Lines 1–500 of 1192. 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import { it as effectIt } from "@effect/vitest"; import { HostProcessPlatform } from "@t3tools/shared/hostProcess"; import * as Cause from "effect/Cause"; import * as Effect from "effect/Effect"; import * as Exit from "effect/Exit"; import * as FileSystem from "effect/FileSystem"; import * as Fiber from "effect/Fiber"; import * as Layer from "effect/Layer"; import * as Logger from "effect/Logger"; import * as Option from "effect/Option"; import * as Path from "effect/Path"; import * as Schema from "effect/Schema"; import type * as Scope from "effect/Scope"; import { TestClock } from "effect/testing"; import { beforeEach, describe, expect, it, vi } from "vite-plus/test"; import * as DesktopEnvironment from "../app/DesktopEnvironment.ts"; import * as ElectronWindow from "../electron/ElectronWindow.ts"; import * as BrowserSession from "./BrowserSession.ts"; import * as PreviewManager from "./Manager.ts"; const { createFromPath, fromId, getFocusedWebContents, mkdir, showItemInFolder, webviewSend, writeFile, writeImage, } = vi.hoisted(() => ({ createFromPath: vi.fn((): { readonly isEmpty: () => boolean } => ({ isEmpty: () => false })), fromId: vi.fn(() => null), getFocusedWebContents: vi.fn(() => null), mkdir: vi.fn((_path: string) => undefined), showItemInFolder: vi.fn(), webviewSend: vi.fn(), writeFile: vi.fn((_path: string, _data: Uint8Array) => undefined), writeImage: vi.fn(), })); vi.mock("electron", () => ({ clipboard: { writeImage, }, nativeImage: { createFromPath, }, shell: { showItemInFolder, }, session: { fromPartition: vi.fn(), }, webContents: { fromId, getFocusedWebContents, }, })); const browserSessionLayer = Layer.succeed( BrowserSession.BrowserSession, BrowserSession.BrowserSession.of({ getPartition: () => Effect.succeed("persist:t3code-preview-test"), isPartition: (partition) => partition.startsWith("persist:t3code-preview-"), getSession: () => Effect.die("unexpected getSession"), clearCookies: () => Effect.void, clearCache: () => Effect.void, }), ); const environmentLayer = Layer.succeed( DesktopEnvironment.DesktopEnvironment, DesktopEnvironment.DesktopEnvironment.of({ browserArtifactsDir: "/tmp/t3/dev/browser-artifacts", } as DesktopEnvironment.DesktopEnvironment["Service"]), ); const fileSystemLayer = FileSystem.layerNoop({ makeDirectory: (path) => Effect.sync(() => { mkdir(path); }), writeFile: (path, data) => Effect.sync(() => { writeFile(path, data); }), }); const layer = PreviewManager.layer.pipe( Layer.provideMerge(browserSessionLayer), Layer.provideMerge(environmentLayer), Layer.provideMerge(fileSystemLayer), Layer.provideMerge(Path.layer), Layer.provideMerge(Layer.succeed(HostProcessPlatform, "linux")), ); const encodePreviewManagerError = Schema.encodeSync(PreviewManager.PreviewManagerError); const withManager = <A>( use: ( manager: PreviewManager.PreviewManager["Service"], ) => Effect.Effect<A, PreviewManager.PreviewManagerError, Scope.Scope>, ) => Effect.gen(function* () { const manager = yield* PreviewManager.PreviewManager; return yield* use(manager); }).pipe(Effect.provide(layer), Effect.scoped); describe("PreviewManager", () => { beforeEach(() => { fromId.mockClear(); getFocusedWebContents.mockReset(); getFocusedWebContents.mockReturnValue(null); mkdir.mockClear(); writeFile.mockClear(); showItemInFolder.mockClear(); writeImage.mockClear(); createFromPath.mockClear(); webviewSend.mockClear(); }); effectIt.effect("reports an unregistered webview as temporarily unavailable", () => withManager((manager) => Effect.gen(function* () { expect(yield* manager.automationStatus("tab_1")).toEqual({ available: false, visible: true, tabId: "tab_1", url: null, title: null, loading: false, }); yield* manager.createTab("tab_1"); expect(yield* manager.automationStatus("tab_1")).toEqual({ available: false, visible: true, tabId: "tab_1", url: null, title: null, loading: false, }); expect(fromId).not.toHaveBeenCalled(); }), ), ); effectIt.effect("isolates failed state listeners and continues delivery", () => { const loggedErrors: Array<unknown> = []; const logger = Logger.make(({ message }) => { for (const value of Array.isArray(message) ? message : [message]) { if (typeof value === "object" && value !== null && "cause" in value) { loggedErrors.push(Cause.squash(value.cause as Cause.Cause<never>)); } } }); const deliveryError = new ElectronWindow.ElectronWindowOperationError({ operation: "send-window-message", platform: "darwin", windowId: 42, channel: "preview:state-change", cause: new Error("renderer unavailable"), }); const delivered = vi.fn(); return withManager((manager) => Effect.gen(function* () { yield* manager.subscribeStateChanges(() => Effect.die(deliveryError)); yield* manager.subscribeStateChanges((tabId, state) => Effect.sync(() => { delivered(tabId, state); }), ); const state = yield* manager.createTab("tab_listener_failure"); expect(delivered).toHaveBeenCalledOnce(); expect(delivered).toHaveBeenCalledWith("tab_listener_failure", state); expect(loggedErrors).toHaveLength(1); expect(loggedErrors[0]).toBeInstanceOf(ElectronWindow.ElectronWindowOperationError); expect(loggedErrors[0]).toMatchObject({ operation: "send-window-message", windowId: 42, channel: "preview:state-change", }); }), ).pipe( Effect.provide( Logger.layer([logger], { mergeWithExisting: false, }), ), ); }); effectIt.effect("does not swallow state listener interruption", () => withManager((manager) => Effect.gen(function* () { const exit = yield* Effect.scoped( Effect.gen(function* () { yield* manager.subscribeStateChanges(() => Effect.interrupt); return yield* Effect.exit(manager.createTab("tab_interrupted_listener")); }), ); expect(Exit.isFailure(exit)).toBe(true); if (Exit.isFailure(exit)) { expect(Cause.hasInterrupts(exit.cause)).toBe(true); } }), ), ); effectIt.effect("queues navigation until the webview registers", () => withManager((manager) => Effect.gen(function* () { const loadURL = vi.fn(async () => undefined); const listeners = new Map<string, (...args: never[]) => void>(); fromId.mockReturnValue({ id: 42, isDestroyed: () => false, getType: () => "webview", getURL: () => "about:blank", getTitle: () => "", isLoading: () => false, getZoomFactor: () => 1, setZoomFactor: vi.fn(), loadURL, on: vi.fn((event: string, listener: (...args: never[]) => void) => { listeners.set(event, listener); }), off: vi.fn(), ipc: { on: vi.fn(), off: vi.fn() }, send: webviewSend, navigationHistory: { canGoBack: () => false, canGoForward: () => false }, setWindowOpenHandler: vi.fn(), debugger: { isAttached: () => false, attach: vi.fn(), sendCommand: vi.fn(async () => undefined), on: vi.fn(), off: vi.fn(), }, } as never); yield* manager.navigate("tab_pending", "localhost:3200"); expect(yield* manager.automationStatus("tab_pending")).toEqual({ available: false, visible: true, tabId: "tab_pending", url: "http://localhost:3200/", title: "", loading: true, }); yield* manager.registerWebview("tab_pending", 42); yield* Effect.yieldNow; expect(loadURL).toHaveBeenCalledOnce(); expect(loadURL).toHaveBeenCalledWith("http://localhost:3200/"); }), ), ); effectIt.effect("mirrors Electron's effective zoom across registration and navigation", () => withManager((manager) => Effect.gen(function* () { let effectiveZoom = 0.9; let zoomReadable = true; let url = "https://example.com"; const listeners = new Map<string, (...args: unknown[]) => void>(); const setZoomFactor = vi.fn(); fromId.mockReturnValue({ id: 42, isDestroyed: () => false, getType: () => "webview", getURL: () => url, getTitle: () => "Example", isLoading: () => false, getZoomFactor: () => { if (!zoomReadable) throw new Error("zoom unavailable"); return effectiveZoom; }, setZoomFactor, on: vi.fn((event: string, listener: (...args: unknown[]) => void) => { listeners.set(event, listener); }), off: vi.fn(), ipc: { on: vi.fn(), off: vi.fn() }, send: webviewSend, navigationHistory: { canGoBack: () => false, canGoForward: () => false }, setWindowOpenHandler: vi.fn(), debugger: { isAttached: () => false, attach: vi.fn(), sendCommand: vi.fn(async () => undefined), on: vi.fn(), off: vi.fn(), }, } as never); const states: PreviewManager.PreviewTabState[] = []; yield* manager.subscribeStateChanges((_tabId, state) => Effect.sync(() => { states.push(state); }), ); yield* manager.createTab("tab_zoom"); yield* manager.registerWebview("tab_zoom", 42); expect(states.at(-1)?.zoomFactor).toBe(0.9); expect(setZoomFactor).not.toHaveBeenCalled(); effectiveZoom = 1.25; listeners.get("did-navigate")?.(); yield* Effect.yieldNow; expect(states.at(-1)?.zoomFactor).toBe(1.25); expect(setZoomFactor).not.toHaveBeenCalled(); zoomReadable = false; url = "https://example.com/after-zoom-read-failed"; listeners.get("did-navigate")?.(); yield* Effect.yieldNow; expect(states.at(-1)?.navStatus).toEqual({ kind: "Success", url, title: "Example", }); expect(states.at(-1)?.zoomFactor).toBe(1.25); const replacementSetZoomFactor = vi.fn(); fromId.mockReturnValue({ id: 43, isDestroyed: () => false, getType: () => "webview", getURL: () => url, getTitle: () => "Example", isLoading: () => false, getZoomFactor: () => 1, setZoomFactor: replacementSetZoomFactor, on: vi.fn(), off: vi.fn(), ipc: { on: vi.fn(), off: vi.fn() }, send: webviewSend, navigationHistory: { canGoBack: () => false, canGoForward: () => false }, setWindowOpenHandler: vi.fn(), debugger: { isAttached: () => false, attach: vi.fn(), sendCommand: vi.fn(async () => undefined), on: vi.fn(), off: vi.fn(), }, } as never); yield* manager.registerWebview("tab_zoom", 43); expect(replacementSetZoomFactor).toHaveBeenCalledWith(1.25); expect(states.at(-1)?.zoomFactor).toBe(1.25); }), ), ); effectIt.effect("emulates prefers-color-scheme and re-applies it across webview swaps", () => withManager((manager) => Effect.gen(function* () { const makeWebContents = (id: number) => { const sendCommand = vi.fn(async () => undefined); return { sendCommand, wc: { id, isDestroyed: () => false, isDevToolsOpened: () => false, getType: () => "webview", getURL: () => "https://example.com", getTitle: () => "Example", isLoading: () => false, getZoomFactor: () => 1, setZoomFactor: vi.fn(), on: vi.fn(), off: vi.fn(), ipc: { on: vi.fn(), off: vi.fn() }, send: webviewSend, navigationHistory: { canGoBack: () => false, canGoForward: () => false }, setWindowOpenHandler: vi.fn(), debugger: { isAttached: () => false, attach: vi.fn(), sendCommand, on: vi.fn(), off: vi.fn(), }, } as never, }; }; const first = makeWebContents(42); fromId.mockReturnValue(first.wc); const states: PreviewManager.PreviewTabState[] = []; yield* manager.subscribeStateChanges((_tabId, state) => Effect.sync(() => { states.push(state); }), ); yield* manager.createTab("tab_scheme"); yield* manager.registerWebview("tab_scheme", 42); yield* Effect.yieldNow; yield* manager.setColorScheme("tab_scheme", "dark"); expect(first.sendCommand).toHaveBeenCalledWith("Emulation.setEmulatedMedia", { features: [{ name: "prefers-color-scheme", value: "dark" }], }); expect(states.at(-1)?.colorScheme).toBe("dark"); const replacement = makeWebContents(43); fromId.mockReturnValue(replacement.wc); yield* manager.registerWebview("tab_scheme", 43); yield* Effect.yieldNow; expect(replacement.sendCommand).toHaveBeenCalledWith("Emulation.setEmulatedMedia", { features: [{ name: "prefers-color-scheme", value: "dark" }], }); expect(states.at(-1)?.colorScheme).toBe("dark"); yield* manager.setColorScheme("tab_scheme", "system"); expect(replacement.sendCommand).toHaveBeenCalledWith("Emulation.setEmulatedMedia", { features: [{ name: "prefers-color-scheme", value: "" }], }); expect(states.at(-1)?.colorScheme).toBe("system"); }), ), ); effectIt.effect("keeps a main-frame load failure visible until a retry starts", () => withManager((manager) => Effect.gen(function* () { const url = "http://localhost:5733/"; let loading = false; const listeners = new Map<string, (...args: unknown[]) => void>(); fromId.mockReturnValue({ id: 42, isDestroyed: () => false, getType: () => "webview", getURL: () => url, getTitle: () => "localhost:5733", isLoading: () => loading, getZoomFactor: () => 1, setZoomFactor: vi.fn(), on: vi.fn((event: string, listener: (...args: unknown[]) => void) => { listeners.set(event, listener); }), off: vi.fn(), ipc: { on: vi.fn(), off: vi.fn() }, send: webviewSend, navigationHistory: { canGoBack: () => false, canGoForward: () => false }, setWindowOpenHandler: vi.fn(), debugger: { isAttached: () => false, attach: vi.fn(), sendCommand: vi.fn(async () => undefined), on: vi.fn(), off: vi.fn(), }, } as never); const statuses: PreviewManager.PreviewNavStatus[] = []; yield* manager.subscribeStateChanges((_tabId, state) => Effect.sync(() => { statuses.push(state.navStatus); }), ); yield* manager.createTab("tab_failed"); yield* manager.registerWebview("tab_failed", 42); listeners.get("did-fail-load")?.( {}, -105, "ERR_NAME_NOT_RESOLVED", "https://missing-frame.example/", false, ); yield* Effect.yieldNow; expect(statuses.at(-1)?.kind).toBe("Success"); loading = true; listeners.get("did-start-loading")?.(); yield* Effect.yieldNow; expect(statuses.at(-1)?.kind).toBe("Loading"); loading = false; listeners.get("did-fail-load")?.({}, -102, "ERR_CONNECTION_REFUSED", url, true); listeners.get("did-stop-loading")?.(); listeners.get("page-title-updated")?.();