gistfile1.txt

var co = require('co'),
  Promise = require('bluebird')
;


// This just creates 3 identical generator functions.
(function (g) {
  ["foo","bar","baz"].forEach( function(x) {
    g[x] = function * () {
      let c = 0;
      while (true && c<5) {
        console.log( x + ' ' + c++ );
        yield [];
      }
      //throw Error('DEAD'); // XXX: Dare you!! uncomment it
      return {'var':x, 'count':c};
    }
  } );
})(global);

co( function* () {

  try {
  // parallel opperations
  console.log( yield [foo,bar,baz] );

  //synchronous opperations
  console.log( yield foo );
  console.log( yield bar );
  }
  catch ( e ) {
    console.log({'Handeled error': e});
  }
} )();