text: var fs = require("fs-extra");
  
  module.exports = function(path_to_source_file, callback) {
    fs.readJson(path_to_source_file, function(err, data) {
      if (err) return callback(err);
  
      callback(null, {
        posts: data.db[0].data.posts,
        users: data.db[0].data.users,
        tags: data.db[0].data.tags,
        posts_tags: data.db[0].data.posts_tags
      });
    });
  };
  