cityherbs.cn Email Addresses and Contacts - KazanSEO

Based on the given text, it is difficult to determine the exact purpose or topic of the website. However, we can infer that it is related to performance measurement and optimization for web applications. The code snippets suggest functions and calculations related to performance timing, delaying execution, error handling, and browser compatibility checks. It may also involve the use of promises and resolving credentials for secure access. Without more context or additional information provided in the cleaned HTML source, a more specific summary cannot be generated.