设计一个请求中断器，如果请求超过一定的时间未响应就将其中断并返回失败。

[CodeRookie262]

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[CodeRookie262]

可以借助 Promise 和 AbortController 进行异步管控和中断请求。

      function request(options = {}) {
        let { delay, url, option = {} } = options;

        const abortController = new AbortController();
        const signal = abortController.signal;

        return new Promise((resolve, reject) => {
          fetch(url, { ...option, signal })
            .then(r => r.json())
            .then(resolve, reject);

          if (delay === undefined) return;
          const timer = setTimeout(() => {
            abortController.abort();
            reject({ msg: '请求延时' });
            clearTimeout(timer);
          }, delay);
        });
      }