code: function getDefinition(name) {
    var split      = name.split('::'),
        path       = split[0],
        field      = split[1],
        exported   = (path in require.cache) && require.cache[path].exports,
        definition = !!exported && (field ? exported[field] : exported);
    return !!definition && !!getProto(definition) && definition || null;
  }
docs: Get the class definition by explicit path where already in the require cache.
  @param {string} name The absolute path to the file containing the class
  @returns {null}