oop.vehicle.ts

{
  class Vehicle {
    constructor(tires: number, fuel: number) {
      console.log(tires, fuel);
    }

    start = () => {
      console.log("start");
    };

    stop = () => {
      console.log("stop");
    };

    run = () => {
      console.log("keep going...");
    };
  }

  class Car extends Vehicle {
    constructor(
      private tires: number,
      private fuel: number,
      private owner: string
    ) {
      super(tires, fuel);
    }
    get spec() {
      return {
        tires: this.tires,
        fuel: this.fuel,
        owner: this.owner,
      };
    }
    get ownerName() {
      return this.owner;
    }
    set ownerName(newName: string) {
      this.owner = newName;
    }
  }

  class Motorcycle extends Vehicle {
    //   ...
  }

  class PorcheBoxter extends Car {
    run = () => {
      console.log("full accelerator!");
    };

    boost = () => {
      // ...
    };
  }

  class HyundaiSonata extends Car {
    run = () => {
      console.log("please, keep going...");
    };

    callEngineer = () => {
      // ...
    };
  }

  const myPorche = new PorcheBoxter(4, 58, "steve");
  console.log(myPorche.start()); // start
  console.log(myPorche.ownerName); // steve
  console.log(myPorche.spec); // { tires: 4, fuel: 58, owner: 'steve' }
  console.log(myPorche.run()); // full accelerator!
}