typescript - Assert class has only properties of an interface

Question

How to make sure a class implements an interface, and has no properties besides those needed to implement that interface?

interface A {
  a: string;
}

class Klass implements A {
  a: string; // make sure Klass has a:string;
  b: number; //this should throw - make sure it implements ONLY interface A
}

question from:https://stackoverflow.com/questions/65871292/assert-class-has-only-properties-of-an-interface

Answer 1

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