tracer says to #ysitd
0==a.length};k.string.isEmpty=k.string.isEmptyOrWhitespace;k.string.isEmptyOrWhitespaceSafe=function(a){return k.string.isEmptyOrWhitespace(k.string.makeSafe(a))};k.string.isEmptySafe=k.string.isEmptyOrWhitespaceSafe;k.string.isBreakingWhitespace=function(a){return!/[^\t\n\r