old_contents: var upload = require('../lib/upload');
  var retrieve = require('../lib/retrieve'); 
  var resize = require('../lib/resize');
  var filters = require('../lib/filters');
  var helpers = require('../lib/helperfunctions');
  var db = require('../app/models/imageMetaData');
  var uuid = require('node-uuid');
  
  module.exports = {
    routeHandler: function(app) {    
      //middleware for any image retrieval
      app.param('image', function(req, res, next, key) {
        //if image exists in db, set key as a property of
        //the request object
        db.find({key: key}, function(error, data) {
            if (error) {
              return next(error);
            }
  
            if (data.length === 0) {
              console.error('image has not been uploaded </3');
              return helpers.write(req, res, 404);
            }
  
            req.key = key;
            next();
          });
      });
  
      //middlware for filter requests
      app.param('filter', function(req, res, next, filter) {
        req.filter = filter;
        next();
      });
  
      //home route
      var home = require('../app/controllers/home');
      app.get('/', home.index);
  
      //upload route
      app.post('/upload', upload.upload, function(req, res, next) {
      });
  
      //get image route
      app.get('/:image', retrieve.retrieve, function(req, res, next) {
        helpers.helper.write(req, res, 200);
      });
  
      //resize image route
      app.get('/:image/size', retrieve.retrieve, resize.identify, function(req, res, next) {
      });
  
      //transform image
      app.get('/:image/:filter', retrieve.retrieve, filters.routeFilter, function(req, res, next) {
      });
    },
  };
  
  
new_contents: var upload = require('../lib/upload');
  var retrieve = require('../lib/retrieve'); 
  var resize = require('../lib/resize');
  var filters = require('../lib/filters');
  var helpers = require('../lib/helperfunctions');
  var db = require('../app/models/imageMetaData');
  var uuid = require('node-uuid');
  
  module.exports = {
    routeHandler: function(app) {    
      //middleware for any image retrieval
      app.param('image', function(req, res, next, key) {
        //if image exists in db, set key as a property of
        //the request object
        db.find({key: key}, function(error, data) {
            if (error) {
              return next(error);
            }
  
            if (data.length === 0) {
              console.error('image has not been uploaded </3');
              return helpers.helper.write(req, res, 404);
            }
  
            req.key = key;
            next();
          });
      });
  
      //middlware for filter requests
      app.param('filter', function(req, res, next, filter) {
        req.filter = filter;
        next();
      });
  
      //home route
      var home = require('../app/controllers/home');
      app.get('/', home.index);
  
      //upload route
      app.post('/upload', upload.upload, function(req, res, next) {
      });
  
      //get image route
      app.get('/:image', retrieve.retrieve, function(req, res, next) {
        helpers.helper.write(req, res, 200);
      });
  
      //resize image route
      app.get('/:image/size', retrieve.retrieve, resize.identify, function(req, res, next) {
      });
  
      //transform image
      app.get('/:image/:filter', retrieve.retrieve, filters.routeFilter, function(req, res, next) {
      });
    },
  };
  
  
subject: fix syntax error