为什么我不能这样做？是由于Javascript / Typescript的技术限制,还是由Typescript的开发人员做出的设计决定？这个相同的代码在Java或C#中可以正常工作.

class Test {
  static str: string = "test";
  public static getTest(): string {
    return this.str;
  }
}
//works as expected
console.log(Test.getTest());
//won't compile
var test: Test = new Test();
console.log(test.getTest());