lib/plugin.js
function shouldProcess (filePath, done) {
        done(!!multimatch(filePath, transform.pattern, transform.opts).length)
      }
function shouldProcess (filePath, done) {
        done(!!multimatch(filePath, transform.pattern, transform.opts).length)
      }
function shouldProcess ( filePath , done ) { done ( ! ! multimatch ( filePath , transform . pattern , transform . opts ) . length ) }
check if we should handle this filePath
check if we should handle this filePath