Josh, I think this is a question more for you...
In terms of source mapping... is the 'stringifyNode' pattern that is used
in some places supported?
For example
s = stringifyNode(myNode); //<-walks and presumably creates mappings like
normal
write("("): //<-- some wrapper around 's' content (could be any arbitrary
length pre-pended for example
s = s.substring(2,s.length()-3); //<--- some manipulation of s
write(")") //<-- something else to wrap the stuff that changed.
I did not look to see if this was somehow supported, so this is just a lazy
question based on my wondering if/how it was. I did not specifically test
output that uses those parts yet.