angular-cn/public/docs/_examples/pipes/ts/app/heroes.ts

export interface Flyer { canFly: boolean; }
export const HEROES =  [
  {name: 'Windstorm', canFly: true},
  {name: 'Bombasto',  canFly: false},
  {name: 'Magneto',   canFly: false},
  {name: 'Tornado',   canFly: true}
];