@kernel-js/auth/dist/decorators/ValidateUserParams.js

...

import { get, isEmpty } from '@kernel-js/support';
import { ArgumentNullError } from '@kernel-js/exceptions';
/**
 * @returns any
 */

export default function Validate() {
  /**
   * @param  {any} target
   * @param  {string} propertyKey
   * @param  {PropertyDescriptor} descriptor
   */
  return function (target, propertyKey, descriptor) {
    var originalMethod = descriptor.value;

    descriptor.value = function () {
      for (var _len = arguments.length, args = new Array(_len), _key = 0; _key < _len; _key++) {
        args[_key] = arguments[_key];
      }

      var params = args[0];

      if (isEmpty(get(params, 'username', null))) {
        throw new ArgumentNullError('username');
      }

      if (isEmpty(get(params, 'password', null))) {
        throw new ArgumentNullError('password');
      }

      return originalMethod.apply(this, args);
    };

    return descriptor;
  };
}
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