How to get the type of an object as a string in JavaScript/TypeScript?

Question

JavaScript

There is this script:

interface IFilterEducationPlanClass {
}

 public constructor(model: IFilterEducationPlanClass) {
    console.log(model);
  }

As you can see, the input is an object of type IFilterEducationPlanClass.
How can I get its type name as a string: IFilterEducationPlanClass?