Typescript TS1238:作为表达式调用时无法解析类装饰器的签名

我看到以下编译错误：

TS1238:调用为时无法解析类装饰器的签名 表情

代码如下：

const fdec = function(target:any, field: any, desc: any){
  console.log('target 0 :', target);
  target.bar = 3;
  return target;
};

const fdec2 = function(){
  console.log('target 1:');
  return function(target:any, field: any, desc: any){
    console.log('target 2:', target);
    target.bar = 3;
    return target;
  }
};

@fdec
@fdec2()
class Foo {
  static bar: number
}


console.log(Foo.bar);
console.log(new Foo());

---

有人知道如何修复该错误吗？

类装饰器的签名（如lib.d.ts中所示）必须如下所示：

declare type ClassDecorator = <TFunction extends Function>(target: TFunction) => TFunction | void;

const fdec = function (target: any) {
    console.log('target 0 :', target);
    target.bar = 3;
    return target;
};

const fdec2 = function () {
    console.log('target 1:');
    return function (target: any) {
        console.log('target 2:', target);
        target.bar = 3;
        return target;
    }
};

@fdec
@fdec2()
class Foo {
    static bar: number
}


console.log(Foo.bar);
console.log(new Foo());