Use lodash templates with Express 3

lodash-render.js

'use strict';

var fs = require('fs');
var _ = require('lodash');

var cache = Object.create(null);



exports.renderFile = function (path, options, callback) {
  var html;
  var template;
  var context = options || {};

  if (cache[path]) {
    html = cache[path](context);
    return callback(null, html);
  }
  
  fs.readFile(path, 'utf8', function (err, data) {
    if (err) return callback(err);

    try {
      template = _.template(data);
    } catch(err) {
      return callback(err);
    }

    cache[path] = template;
    html = template(context);
    callback(null, html);
  });
};