Change to Shell Script to execute PERL

I need an edit made to the following shell script. ( cd $SRC find ./ -type f | while read FILE;do # Build Destination path DEST_FILE=$DST/${FILE#./} callLib [login to view URL] $FILE $DEST_FILE done ) if file is a javascript file (.js) then execute the PERL below and copy the resultant file instead of the orginal to the $DEST_FILE location perl -n -e 's/^\s*\/\/.*$//; s/^\s+//; print if /\S/'