Sequelize: toPOJO for DustJS

sequelize-toPOJO.js

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

/** Convert a Sequelize model instance into a true POJO.
 *
 * This differs from `Instance.toJSON` in that nested instances are
 * converted as well.
 *
 * @param {Object|Array} [instance] Sequelize model instance or instances.
 * @return {Object|Array} A plain object version of the instance.
 */
function toPOJO(instance) {
  if (_.isObject(instance)) {
    instance = _getDataValues(instance) || instance;
    return _.cloneDeep(instance, _getDataValues);
  }
  
  return instance;
}

function _getDataValues(value) {
  return _.has(value, 'dataValues') ? value.dataValues : undefined;
}

For why this is necessary see issue sequelize/sequelize#2119.