example grunt express

Gruntfile.js

module.exports = function(grunt) {

  require('load-grunt-tasks')(grunt);
  grunt.loadNpmTasks('grunt-express-server');

  grunt.initConfig({
    pkg: require('./package.json'),
    express: {
      dev: {
        options: {
          script: './server.js'
        }
      }
    },
    watch: {
      options: {
        livereload: true
      },
      express: {
        files: ['**/*.json', '**/*.js'],

        tasks: ['express:dev'],
        options: {
          spawn: false
        }
      }
    }
  });

  grunt.registerTask('dev', 
    ['express:dev', 'watch']
  );

  grunt.registerTask('default', ['dev']);

}

package.json

{
  "name": "weee",
  "version": "0.0.0",
  "description": "",
  "main": "Gruntfile.js",
  "scripts": {
    "test": "echo \"Error: no test specified\" && exit 1",
    "start": "node server.js"
  },
  "author": "",
  "license": "BSD-2-Clause",
  "dependencies": {
    "q-io": "~1.10.6",
    "q": "~0.9.7"
  },
  "devDependencies": {
    "grunt-express-server": "~0.4.11",
    "grunt": "~0.4.2",
    "grunt-contrib-watch": "~0.5.3"
  }
}

response.json

{
  "weeee": true,
  "yesss": "yessss"
}

server.js

var express = require('express');
var fs = require("q-io/fs");
var Q = require('q');

Q.longStackSupport = true;

var app = express();

var BASE_PATH_RE = /\/pathstuff\/morepath\/(.+)/
var RESOURCE_BASEDIR = './'
var CACHE = {};
var PORT = 8082;

function readFilePromise(filename) {
  return fs.read(RESOURCE_BASEDIR + filename).then(function(content) {
    return CACHE[filename] = content.toString();
  });
}

function getResourcePromise(filename) {
  if (filename in CACHE) {
    console.log('reading file from cache...');
    return Q(CACHE[filename]);
  }
  console.log('reading file from fs...');
  return readFilePromise(filename);
}

app.get(BASE_PATH_RE, function(req, res) {
  var filename = req.params[0];
    getResourcePromise(filename).then(function(response) {
      res.contentType(filename);
      res.send(response);
    }).fail(function(err) {
      console.log("[ERROR]: ", JSON.stringify(err));
      res.send(404, 404);
    }).done();
});

app.listen(PORT);
console.log('starting server on ' + PORT);