1. function visitDecorator(target: any, key: string, descriptor: PropertyDescriptor) {
    2.   // descriptor.writable = false;
    3. }
    5. class Test {
    6.   private _name: string;
    7.   constructor(name: string) {
    8.     this._name = name;
    9.   }
    10.   get name() {
    11.     return this._name;
    12.   }
    13.   @visitDecorator
    14.   set name(name: string) {
    15.     this._name = name;
    16.   }
    17. }
    19. const test = new Test('dell');
    20. test.name = 'dell lee';
    21. console.log(test.name);