提取不是仅在Release版本中起作用

Question

我的代码已经过测试，可以在Debug版本上运行，但是当我转到Release时，它在加载时崩溃。我从XCode收到以下错误：

E0729 10:19:44.701792 1833381888 JSCHelpers.cpp:140] Got JS Exception: Can't find variable: fetch (/var/containers/Bundle/Application/FC98F3E8-A8D3-499E-A419-AB5C296E2B2F/mothership.app/main.jsbundle:312)

没有下面的代码，它可以工作，但是我不明白为什么不能。正在使用它来刷新我的App.js文件顶部的身份验证令牌：

global.refresh_count = 0;
    global._fetch = fetch;
    global.fetch = function(uri, options, ...args) {
      return global._fetch(uri, options, ...args).then(async (response) => {
        console.log('Fetch', { request: { uri, options, ...args }, response });
        if (response.status == 401 && global.refresh_count <= 3) {
          // get refresh token
          global.refresh_count++;
          const response = await identityServices.refreshToken();
          // try request again
          if (response.access) {
            // set new authorization
            var newAuthHeader = 'Bearer ' + response.access;
            options.headers.Authorization = newAuthHeader;
            const repeatResponse = await fetch(
              uri,
              options,
              ...args,
            );
            return repeatResponse;
          } else {
            console.log('could not refresh token!!!');
          }
        }

        global.refresh_count = 0;
        return response;
      });
    };