md-menu-custom.ts

import { 
  Component,
  OnInit,
  ViewEncapsulation,
  Attribute
 } from '@angular/core';

import { 
  MdMenu,
  MenuPositionX,
  MenuPositionY,
  transformMenu,
  fadeInItems
 } from '@angular/material';

@Component({
  selector: 'cc-md-menu',
  templateUrl: './md-menu.component.html',
  host: { 'role': 'menu'},
  encapsulation: ViewEncapsulation.None,
  styleUrls: ['./md-menu.component.scss'],
  animations: [
    transformMenu,
    fadeInItems
  ],
  exportAs: 'mdMenu'
})
export class MdMenuComponent extends MdMenu implements OnInit {

  constructor(
      @Attribute('x-position') _posX : MenuPositionX,
      @Attribute('y-position') _posY : MenuPositionY,
    ) { 
    super(_posX, _posY);
  }
}