如何在打字稿中創建裝飾模式？

Question

我想從一組類中創建對象，而不必定義每個集合...實質上，我試圖創建裝飾器模式。在打字稿中，由於編輯限制，這似乎幾乎不可能。

我試過使用代理。沒有骰子。

以下是我正在嘗試完成的用法（某些代碼缺失以允許我正在嘗試執行的操作 - 這是我正在嘗試解決的問題）。

class Person { 

    public name:string; 
    public age:number; 

    public identify(){ 
     console.log(`${this.name} age ${this.age}`); 
    } 


} 

class Child { 

    public Mother:Person; 
    public Father:Person; 

    public logParents(){ 
     console.log("Parents:"); 
     this.Mother.identify(); 
     this.Father.identify(); 
    } 

} 

class Student { 

    public school:string; 

    public logSchool(){ 
     console.log(this.school); 
    } 

} 

let Dad = new Person(); 
Dad.name = "Brad"; 
Dad.age = 32; 

let Mom = new Person(); 
Mom = new Student(Mom); 
Mom.name = "Janet"; 
Mom.age = 34; 
Mom.school = "College of Night School Moms"; 

let Johnny = new Person(); 
Johnny = new Child(Johnny); 
Johnny = new Student(Johnny); 
Johnny.name = "Johnny"; 
Johnny.age = 12; 
Johnny.Mother = Mom; 
Johnny,Father = Dad; 
Johnny.school = "School for kids who can't read good"; 

Answer 1

使用java example here爲基礎，我改了一點，以適應您的代碼：

interface Person { 
    name: string; 
    age: number; 
    identify(): void; 
} 

class SimplePerson implements Person { 
    public name: string; 
    public age: number; 

    public identify(){ 
     console.log(`${this.name} age ${this.age}`); 
    } 
} 

abstract class PersonDecorator implements Person { 
    protected decoratedPerson: Person; 

    public constructor(person: Person) { 
     this.decoratedPerson = person; 
    } 

    public get name() { 
     return this.decoratedPerson.name; 
    } 

    public get age() { 
     return this.decoratedPerson.age; 
    } 

    identify(): void { 
     return this.decoratedPerson.identify(); 
    } 
} 

class Child extends PersonDecorator { 
    public Mother: Person; 
    public Father: Person; 

    public logParents(){ 
     console.log("Parents:"); 
     this.Mother.identify(); 
     this.Father.identify(); 
    } 
} 

class Student extends PersonDecorator { 
    public school:string; 

    public logSchool(){ 
     console.log(this.school); 
    } 
} 

let Dad = new SimplePerson(); 
Dad.name = "Brad"; 
Dad.age = 32; 

let Mom = new SimplePerson(); 
Mom = new Student(Mom); 
Mom.name = "Janet"; 
Mom.age = 34; 
(Mom as Student).school = "College of Night School Moms"; 

let Johnny = new SimplePerson(); 
Johnny = new Child(Johnny); 
Johnny = new Student(Johnny); 
Johnny.name = "Johnny"; 
Johnny.age = 12; 
(Johnny as Child).Mother = Mom; 
(Johnny as Child).Father = Dad; 
(Johnny as Student).school = "School for kids who can't read good"; 

（code in playground）