wrappy
Callback wrapping utility
USAGE
var wrappy = // var wrapper = wrappy(wrapperFunction) // make sure a cb is called only once// See also: http://npm.im/once for this specific use casevar once = { console}// has some rando propertyprintBooiAmBooPrinter = true var onlyPrintOnce = // prints 'boo' // does nothing // random property is retained!assert