..and for that work, you get a whole class of errors removed from your code.. Luckily most of the big libraries are covered; it's mainly smaller stuff - think

..and for that work, you get a whole class of errors removed from your code.. Luckily most of the big libraries are covered; it's mainly smaller stuff - think random jQuery plugins - that aren't covered. These are libraries which are often hacked together, lack tests, clear documentation and anything approaching support. So things that you shouldn't really rely on.