text: /* */ 
  "format cjs";
  import { isPresent } from 'angular2/src/facade/lang';
  import { unimplemented } from 'angular2/src/facade/exceptions';
  /**
   * Base class for control directives.
   *
   * Only used internally in the forms module.
   */
  export class AbstractControlDirective {
      get control() { return unimplemented(); }
      get value() { return isPresent(this.control) ? this.control.value : null; }
      get valid() { return isPresent(this.control) ? this.control.valid : null; }
      get errors() {
          return isPresent(this.control) ? this.control.errors : null;
      }
      get pristine() { return isPresent(this.control) ? this.control.pristine : null; }
      get dirty() { return isPresent(this.control) ? this.control.dirty : null; }
      get touched() { return isPresent(this.control) ? this.control.touched : null; }
      get untouched() { return isPresent(this.control) ? this.control.untouched : null; }
      get path() { return null; }
  }
  