Check out example codes for "class inheritance in typescript". It will help you in understanding the concepts better.

Code Example 1

// Parent class
class Info {
  protected name: string ;
  constructor(n:string){
    this.name = n ;
  };
  describe(){
    console.log(`Your name is  ${this.name}`);
  }
}

//inherited class (you can overwrite methods of parent class, super is used to
// connect to the parent parameter(s) . )

class Detail extends Info{
  constructor(name:string, public age:number){
    super(name);
  }
  findAge(){
      console.log(`${this.name} age is ${this.age}`)
  }
}

const b = new Detail('jank', 23);
b.describe();
b.findAge();

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