ne of the more frustrating things in JavaScript has always been how Errors are handled. They are difficult to check for, harder to extend and often times have cryptic messages providing little insight into what has gone wrong.

Uncaught TypeError: undefined is not a function

Everyone has seen this at one time or another. It isn't very helpful, and these types of errors are actually difficult to account for in JavaScript applications. The only error handling in JavaScript that the language allows is generic try/catch, where you can catch an error, but trying to recover from specific errors is difficult to do. Large in part the the fact that you can throw anything, not just errors. You can