I have seen the plastering of webpacked-gulpified-obfuscated-minified-hoistpropified-younamedifiedit mind-blowing amounts of Javascript to create the latest "cool" app.

I have seen web pages best described as "this webpage is so heavy not even light can escape it". The (not full) cast, not in order of appearance:

. 5MB+ of Javascript (not kidding) -- _after_ the above

. gazillions of HTTP requests

. internal data bled through to the outside world (not always problematic from a security point of view, but one may as well: 1) save on the bytes 2) not give malicious ideas to you-know-who)

. code coverage is inversely proportional: with grand score hovering around 3-5%.....

End result:

. from inside: a bloated over-engineered chaos (see entry: "Big Ball of Mud")

. from outside: catastrophic load times of around 35 seconds w/o a primed cache.

Talk about the latest shiny new "single page application".....

Granted, it's not always like that! :)