Depth cloning and reflection of typescript class objects

1. Define base and derived classes

// Define base class 
/*
*    class 
* */
class myClass{
    /*
    *  Constructors 
    * */
    constructor(x,y) {
        // @ts-ignore
        Object.assign(this,{x,y});// Add attribute 
    }
}

// Subclasses continue to base classes 
class mySubClass extends myClass{
    // structure 
    constructor() {
        super(200,300);
    }
    // Class instance method 
    hello(){
        console.log('hello,mySubClass');
    }
}

2. Object depth cloning method implementation

// Do not continue cloning --- Shallow clone 
let clone=(obj)=>{
    // @ts-ignore
    return  Object.assign({},obj);
}

// Inheritance cloning ---- A deep clone 
let clonedeep=(obj)=>{
    let objProto = Object.getPrototypeOf(obj);
    // @ts-ignore
    return Object.assign(Object.create(objProto),obj);
}

3. Instantiate class objects and clone

// Instantiate the derived class and call the instance method hello
let mysub = new mySubClass();
console.log(mysub,mysub.x,mysub.y);
mysub.hello();

// Class object cloning 
let subClone = clone(mysub);   // Shallow clone 
console.log(subClone);
//subClone.hello();// Shallow clone hello Method is not cloned 

let subDeepClone = clonedeep(mysub);// A deep clone 
console.log(subDeepClone);
subDeepClone.hello();// A deep clone hello Methods can be cloned 

4. Call class instance methods through reflection

// @ts-ignore
console.log( Reflect.has(subClone,'hello'));//false There is no way 
// @ts-ignore
console.log( Reflect.has(subDeepClone,'hello'));//true   Yes hello Method 

  Next, first confirm that the object has hello Method , And then through Reflect.get Get the method and call

// @ts-ignore
if(Reflect.has(subDeepClone,'hello')){ // If the object exists hello This property name 
    // @ts-ignore
    let func_hello = Reflect.get(subDeepClone,'hello');
    // @ts-ignore
    if(typeof (func_hello) == 'function'){ // If hello Is the function 
        console.log(' Execute functions through reflection ===');
        func_hello();// Execute function 
    }
}