Vitu ndani ya Vitu kwenye TypeScript

Vitu vinaweza kuwa na vitu vingine ndani yake, vinavyoelezewa na interfaces tofauti. Tuangalie kwa mifano.

Tuchukulie tuna interface inayoelezea kitu cha jiji:

typescriptinterface City {
  name: string
}

Tufanye pia interface inayoelezea mtumiaji. Wakati huo huo, mtumiaji atakuwa na jina, umri na jiji, ambalo lenyewe ni kitu:

typescriptinterface User {
  name: string,
  age: number,
  city: City
}

Wacha tuunde kitu cha mtumiaji:

typescriptlet city: City = {name: 'london'};
let user: User = {name: 'john', age: 30, city: city};

Si lazima kwa jiji kuunda tofauti kutofautisha:

typescriptlet user: User = {
  name: 'john',
  age: 30,
  city: {name: 'london'}
};

typescriptlet employee {
  name: 'andrew',
  potision: {
    name: 'programmer'
    salary: 1000,
  },
  addr: {
    country: 'belarus',
    city: 'minsk'
  }
};

typescriptlet user: User = {
  name: 'john',
  age: 30,
  parents: {
    mother: {
      name: 'jane',
      age: 30,
      parents: null
    },
    father: {
      name: 'eric',
      age: 30,
      parents: null
    }
  }
}