Back on the tightrope, and - surprise! there is a sneaky memory leak possible in the way js does closures.
http://info.meteor.com/blog/an-interesting-kind-of-javascript-memory-leak
Maybe all this super AI they are calling for in the next wave can enhance the garbage collectors to give dev warnings…
It is mentioned here along with some other js leaks and profiling strategies.
https://auth0.com/blog/four-types-of-leaks-in-your-javascript-code-and-how-to-get-rid-of-them/