import { describe, expect, it, vi } from "vitest"; import { killChildProcessTree } from "./killTree"; describe("killChildProcessTree", () => {  it("uses taskkill on Windows when a pid is available", () => {    const kill = vi.fn();    const spawnSyncImpl = vi.fn(() => ({ status: 0 }));     killChildProcessTree({ pid: 123, kill } as never, "SIGTERM", {      platform: "win32",      spawnSyncImpl,    });     expect(spawnSyncImpl).toHaveBeenCalledWith("taskkill", ["/pid", "123", "/T", "/F"], {      stdio: "ignore",    });    expect(kill).not.toHaveBeenCalled();  });   it("falls back to direct kill when taskkill fails", () => {    const kill = vi.fn();    const spawnSyncImpl = vi.fn(() => ({ status: 1 }));     killChildProcessTree({ pid: 456, kill } as never, "SIGKILL", {      platform: "win32",      spawnSyncImpl,    });     expect(kill).toHaveBeenCalledWith("SIGKILL");  });   it("falls back to direct kill when taskkill cannot be spawned", () => {    const kill = vi.fn();    const spawnSyncImpl = vi.fn(() => ({ status: null, error: new Error("ENOENT") }));     killChildProcessTree({ pid: 654, kill } as never, "SIGTERM", {      platform: "win32",      spawnSyncImpl,    });     expect(kill).toHaveBeenCalledWith("SIGTERM");  });   it("kills directly on non-Windows platforms", () => {    const kill = vi.fn();    const spawnSyncImpl = vi.fn();     killChildProcessTree({ pid: 789, kill } as never, "SIGTERM", {      platform: "darwin",      spawnSyncImpl,    });     expect(spawnSyncImpl).not.toHaveBeenCalled();    expect(kill).toHaveBeenCalledWith("SIGTERM");  });});