import { assert, beforeEach, it } from "@effect/vitest";import * as NodeEvents from "node:events";import * as NodeProcess from "node:process";import { vi } from "vite-plus/test"; const forkMock = vi.hoisted(() =>  vi.fn<    (      _path: string,      _args: ReadonlyArray<string>,      _options: { env?: NodeJS.ProcessEnv; execPath?: string },    ) => unknown  >(),); vi.mock("node:child_process", () => ({ fork: forkMock })); import {  makeSnapShotAccessibilityProcessPool,  startSnapShotAccessibilityProcess,} from "./SnapShotAccessibilityProcess.ts"; const makeWorker = () =>  Object.assign(new NodeEvents.EventEmitter(), {    kill: vi.fn(() => true),    send: vi.fn(),  });let worker = makeWorker();const request = {  active: {    title: "Zoom Meeting",    bounds: { x: 10, y: 20, width: 800, height: 600 },    owner: { processId: 42 },  },  platform: "darwin" as const,  sourceTitle: "Zoom Meeting",  imageSize: { width: 1_600, height: 1_200 },}; beforeEach(() => {  worker = makeWorker();  forkMock.mockReset().mockReturnValue(worker);}); it("keeps T3 alive when Zoom crashes accessibility extraction", async () => {  const process = startSnapShotAccessibilityProcess("accessibility.cjs");  const read = process.read(request);  worker.emit("message", "ready");  worker.emit("message", "started");  await read.started;  worker.emit("exit", null, "SIGABRT");   assert.isUndefined(await read.result);}); it("returns immediately when accessibility crashes before the screenshot is ready", async () => {  const process = startSnapShotAccessibilityProcess("accessibility.cjs");  worker.emit("exit", null, "SIGABRT");   const read = process.read(request);  await read.started;  assert.isUndefined(await read.result);}); it("returns accessibility extracted by the helper", async () => {  const process = startSnapShotAccessibilityProcess("accessibility.cjs");  const read = process.read(request);  const context = { accessibleText: "Meeting controls" };  worker.emit("message", "ready");  worker.emit("message", "started");  worker.emit("message", { type: "result", context });   await read.started;  assert.deepEqual(await read.result, context);  assert.strictEqual(forkMock.mock.calls[0]?.[2]?.env?.ELECTRON_RUN_AS_NODE, "1");  assert.strictEqual(forkMock.mock.calls[0]?.[2]?.execPath, NodeProcess.execPath);}); it("hands a warm helper to the capture and prewarms its replacement", async () => {  const warmWorker = makeWorker();  const replacementWorker = makeWorker();  forkMock.mockReset().mockReturnValueOnce(warmWorker).mockReturnValueOnce(replacementWorker);  const pool = makeSnapShotAccessibilityProcessPool("accessibility.cjs");   pool.warm();  warmWorker.emit("message", "ready");  const read = pool.read(request);   assert.lengthOf(forkMock.mock.calls, 2);  assert.deepEqual(warmWorker.send.mock.calls[0]?.[0], request);  assert.lengthOf(replacementWorker.send.mock.calls, 0);   warmWorker.emit("message", "started");  warmWorker.emit("message", { type: "result", context: { accessibleText: "Ready" } });  assert.deepEqual(await read.result, { accessibleText: "Ready" });   pool.close();  assert.lengthOf(replacementWorker.kill.mock.calls, 1);}); it("replaces a warm helper that exits before capture", async () => {  const exitedWorker = makeWorker();  const captureWorker = makeWorker();  const replacementWorker = makeWorker();  forkMock    .mockReset()    .mockReturnValueOnce(exitedWorker)    .mockReturnValueOnce(captureWorker)    .mockReturnValueOnce(replacementWorker);  const pool = makeSnapShotAccessibilityProcessPool("accessibility.cjs");   pool.warm();  exitedWorker.emit("exit", 1);  const read = pool.read(request);  captureWorker.emit("message", "ready");  captureWorker.emit("message", "started");  captureWorker.emit("message", { type: "result", context: { accessibleText: "Recovered" } });   assert.deepEqual(await read.result, { accessibleText: "Recovered" });  assert.lengthOf(forkMock.mock.calls, 3);  assert.deepEqual(captureWorker.send.mock.calls[0]?.[0], request);  pool.close();}); it("allows cold startup to exceed the request-start budget", async () => {  vi.useFakeTimers();  const process = startSnapShotAccessibilityProcess("accessibility.cjs");  try {    const read = process.read(request);    await vi.advanceTimersByTimeAsync(1_500);    assert.lengthOf(worker.kill.mock.calls, 0);    worker.emit("message", "ready");    assert.deepEqual(worker.send.mock.calls[0]?.[0], request);    worker.emit("message", "started");    worker.emit("message", { type: "result", context: { accessibleText: "Ready" } });    assert.deepEqual(await read.result, { accessibleText: "Ready" });  } finally {    process.close();    vi.useRealTimers();  }});