correctly ignore functions that are not part of the source file
correctly ignore functions that are not part of the source file

slonoed/babel-istanbul,RubaXa/babel-istanbul,GalenWarren/babel-istanbul,slonoed/babel-istanbul,RubaXa/babel-istanbul,rtsao/babel-istanbul,rtsao/babel-istanbul,ambitioninc/babel-istanbul,ambitioninc/babel-istanbul,RubaXa/babel-istanbul,GalenWarren/babel-istanbul,rtsao/babel-istanbul,ambitioninc/babel-istanbul,GalenWarren/babel-istanbul,slonoed/babel-istanbul