var dps = require('dotpath-stream')
  , imaginaryObjectStream
 
// pretend imaginaryObjectStream streams an object like:
//
// {
//     file: {name: 'filename'}
//   , blah: 'bleh'
// }
 
imaginaryObjectStream.pipe(dps('file.name')).pipe(process.stdout)
// => 'filename'
imaginaryObjectStream.pipe(dps('blah')).pipe(process.stdout)
// => 'bleh'