当页面上存在其他setTimeout/setInterval调用时，setTimeout出现问题

我有一个通用的Javascript代码片段，所有客户都会将其添加到他们的网站中。这个代码片段获取了一个JS库，它有一些重要的函数，如果库被及时获取，就应该调用这些函数。如果没有及时获取库，则永远不应该调用这些函数。

为了实现这一点，我设置了一个超时，该超时有一个负责处理它的回调函数(它设置一个变量，取决于哪些重要函数将被调用或不被调用(。现在，它在大多数情况下都能完美工作，除非客户端的网站已经有一些定时器值很小的超时/间隔。请看小提琴http://jsfiddle.net/tmckM/37/，查看问题。

我需要找到一种通用的方法来实现这一点，这样，如果库被及时提取，那么在任何情况下都不会发生超时。

以下是JSFiddle 中使用的代码

//Though the library file is downloaded in time(which can be seen from network tab) but still the timeout fires before the library execution. I need to find a workaround for this issue
var library_timeout = 1000;
//All time values are in milliseconds
function loadLibrary() {
    var b = document.createElement('script');
    b.src = 'http://yourjavascript.com/35211527623/library.js';
    b.type = 'text/javascript';
    document.getElementsByTagName('head')[0].appendChild(b);
}
function wasteTime() {
    if (!wasteTime.counter) {
        wasteTime.counter = 1;
    }
    else {
        wasteTime.counter++;
    }
    if (wasteTime.counter == 5) {
        clearInterval(wasteTimerId);
    }
    console.warn('Start wasting time');
    var initial = Date.now();
    while (true) {
        if (Date.now() - initial > 1000) {
            break;
        }
    }
    console.warn('Stopped wasting time');
}
function startProcess() {
    window.process_started_at = Date.now();
    console.log('Started the process at timestamp:', process_started_at);
    setTimeout(function () {
        window.lib_timeout_fired_at = Date.now();
        console.log('Library timed out at timestamp:', lib_timeout_fired_at);
        console.log('So, though the library file will still download, but the functions in it won''t be called.');
    }, library_timeout);
    loadLibrary();
}
//The following line is implemented on user's website.I can't change it.
wasteTimerId = setInterval(wasteTime, 0);//If this line is skipped then library is always executed first and then timeout occurs.
startProcess();