Based on the provided text, it is difficult to determine what the website is specifically about. The text appears to be a combination of JavaScript code and possibly some configuration settings for different variables.
It seems that the website may involve performance tracking or monitoring, as there are references to functions such as "performancemark" and "performancemeasure." It also mentions polyfills for detecting browsers and promises.
However, without further context or additional information about the website's content, it is challenging to provide an accurate summary of what the site is about.
