Select based on enum in Angular2

Question

I have this enum (I\'m using TypeScript) :

export enum CountryCodeEnum {
    France = 1,
    Belgium = 2
}

I would like to build a

Answer 1

Another similar solution, that does not omit "0" (like "Unset"). Using filter(Number) IMHO is not a good approach.

@Component({
  selector: 'my-app',
  providers: [],
  template: `
  
    
  `,
  directives: []
})

export class App {
  countries = CountryCodeEnum;

  constructor() {
    this.keys = Object.keys(this.countries).filter(f => !isNaN(Number(f)));
  }
}

// ** NOTE: This enum contains 0 index **
export enum CountryCodeEnum {
   Unset = 0,
   US = 1,
   EU = 2
}