I too am not affiliated to Mozilla, unless the browser I'm using makes me an affiliated member. However judging from their discussion group, they know it's a problem and will probably try to reduce it to 15min(this is their goal, not their achieved min speed). Sadly, speed of compilation probably won't beat Go's which is 2min.

I do understand your complaint, but dismissing an alpha language because it compilation is too long, or documentation isn't up to par is a bit of an overstretch. They haven't been optimizing for it and the syntax is shifting, so making documentation at this point is like building a house on a sand pit.