Based on the provided text, it is difficult to determine the exact purpose or topic of the website. However, it appears to be related to web development and may contain information about functions, performance optimization, window properties, timing measurements, and various JavaScript concepts such as promises and error handling.
The site might also discuss polyfills for browser compatibility issues and feature detection. It references specific functions like noop (no operation), performancenow (performance measurement), datenow (date retrieval), as well as some unknown libraries or releases.
Without further context or additional information from the website's content, it is not possible to provide a more specific summary of what the site is about.
