Function waitForExit

tests/shutdown.test.ts:50–69

(
  child: Server,
  timeoutMs: number,
)

}

async function waitForExit(
  child: Server,
  timeoutMs: number,
): Promise<{
  code: number | null;
  signal: NodeJS.Signals | null;
  elapsedMs: number;
}> {
  const start = Date.now();
  return await new Promise((resolve, reject) => {
    const timer = setTimeout(() => {
      child.kill('SIGKILL');
      reject(new Error(`server did not exit within ${timeoutMs}ms`));
    }, timeoutMs);
    child.once('exit', (code, signal) => {
      clearTimeout(timer);
      resolve({code, signal, elapsedMs: Date.now() - start});
    });
  });
}

async function rpc(
  child: Server,