auto rsync with gulp task over ssh

auto-rsync.js

// gulpfile.js
var gulp = require( 'gulp' );
var rsync = require( 'gulp-rsync' );
var rsyncHost = process.env.RSYNC_HOST || '0.0.0.0';
var rsyncPort = process.env.RSYNC_PORT || 22;

gulp.task( 'watch', function() {

  var targets = [
    './js/**'
  ];
  var watcher = gulp.watch( targets, ['sync']);
  watcher.on( 'change', function( evt ) {

    // debug
    console.log( 'file: ' + evt.path + ', ' + 'type: ' + evt.type );
  });
});

// test_sshd is setup in ~/.ssh/config
gulp.task( 'sync', function() {

  return gulp.src( 'js/**' )
    .pipe( rsync({
      hostname: 'test_sshd',
      destination: '~/app/'
    }));
});