text: import rules from '../rule/index.js';
  import { isEmptyValue } from '../util';
  
  /**
   *  Validates an object.
   *
   *  @param rule The validation rule.
   *  @param value The value of the field on the source object.
   *  @param callback The callback function.
   *  @param source The source object being validated.
   *  @param options The validation options.
   *  @param options.messages The validation messages.
   */
  function object(rule, value, callback, source, options) {
    const errors = [];
    const validate = rule.required || (!rule.required && source.hasOwnProperty(rule.field));
    if (validate) {
      if (isEmptyValue(value) && !rule.required) {
        return callback();
      }
      rules.required(rule, value, source, errors, options);
      if (value !== undefined) {
        rules.type(rule, value, source, errors, options);
      }
    }
    callback(errors);
  }
  
  export default object;
  